1.1.1 — Patient Identification Standards

• Wrong-patient radiopharmaceutical administration is both a patient-safety event and a radiation-safety event.
• Many NMTCB questions hide the true issue inside workflow noise; the right answer is often to stop and re-identify the patient before proceeding.
• Identity verification anchors every later screening step, including pregnancy status, allergy review, consent support, dose documentation, and image labeling.
• In nuclear medicine, once the dose is administered, the error cannot simply be “taken back,” so verification must happen before injection, imaging, and release of labeled data.

1.1.1.1 Key terms

• Two-identifier rule: Use at least two accepted patient identifiers before care.
• Accepted identifier: Commonly name, date of birth, medical record number, or another institution-approved unique identifier.
• Unaccepted identifier: Room number, physical appearance, diagnosis, or “the patient with the bone scan.”
• Order reconciliation: Matching patient, procedure, indication, and schedule before proceeding.
• Time-out: A brief pause to confirm the right patient and right procedure before a critical step.
• Verbal confirmation: Patient states identifiers when able; staff should not lead with the answer.
• Armband verification: Comparing the wristband to the order and verbal response.
• Proxy verification: Using caregiver, chart, armband, and team confirmation when the patient cannot speak.
• Discrepancy: Any mismatch between patient statement, armband, order, schedule, or documentation.
• Escalation: Stop the workflow and notify the authorized provider/supervisor when identity cannot be confirmed.
• Near miss: An error caught before the dose is administered or imaging proceeds.
• Wrong-patient event: Care delivered to the wrong individual.
• Chain of custody for dose: Traceable association between the prepared dose and the intended patient/procedure.

1.1.1.2 Must-know facts

• Identity verification must occur before administration and again when workflow risk increases.
• Ask the patient to state identifiers; do not convert the check into a yes/no guessing game.
• Room number is never a sufficient identifier.
• If the patient cannot self-identify, use institution-approved alternate verification and escalate uncertainty.
• The technologist may verify and screen; changing the ordered radiopharmaceutical without authorization is out of scope.
• A matching armband alone is not enough if another part of the workflow conflicts.
• Similar names require deliberate pause-and-compare action.
• Documentation must reflect what was verified and what discrepancy action was taken.

flowchart TD
A[Patient arrives] --> B[Ask patient to state full name and DOB]
B --> C[Check armband or approved record]
C --> D[Match order, procedure, schedule, and patient]
D --> E{Any mismatch?}
E -- No --> F[Proceed to next safety screen]
E -- Yes --> G[Stop workflow]
G --> H[Resolve discrepancy and document]
H --> I[Escalate if unresolved]

flowchart LR
A[Strong identifiers] --> A1[Full name]
A --> A2[Date of birth]
A --> A3[Medical record number]
B[Weak identifiers] --> B1[Room number]
B --> B2[Diagnosis]
B --> B3[Physical appearance]
B --> B4[Procedure nickname]

1.1.1.3 Foundations: what counts as correct patient identification

A Explanation

The decision conflict here is simple but highly testable: Do you proceed because the patient appears to fit the appointment, or do you require formal identity confirmation first? The rule that resolves it is the two-identifier standard plus procedure match. In practice, the technologist should ask the patient to state identifiers such as full name and date of birth, then compare those to the armband and the order. The workflow is not complete until the patient, procedure, and documentation all align. See Fig 1.

WHY THIS IS TESTED: Exam stems often include a familiar patient, a busy schedule, or a confident family member to tempt you into accepting a shortcut. The tested pattern is whether you can distinguish a true identifier from a convenience cue. A room number, diagnosis, age estimate, or staff recognition is not enough. See Fig 2.

Choose verbal confirmation when the patient is alert and able. Reject yes/no prompting such as, “Are you Mrs. Smith?” because it can produce false agreement. Choose direct questioning: “Please tell me your full name and date of birth.” When a patient is unable to answer, the single finding that changes the workflow is loss of reliable self-identification. At that point, use institution-approved alternatives: wristband, chart, caregiver or legal representative, and staff cross-checks, then escalate if uncertainty remains.

B Worked example

A 67-year-old outpatient arrives for a scheduled bone scan. He has diabetes, chronic kidney disease, and hearing loss. The schedule shows “Robert J. Martin,” and the waiting room clipboard says “Bob Martin.” His armband from a same-day lab visit reads “Robert Martin.” A transporter says, “That’s the bone scan patient from room 12.” The patient nods when asked, “Are you Mr. Martin?” The most appropriate next step is to stop the yes/no approach and obtain active verbal confirmation using full name and date of birth, then compare those to the order and armband before any dose-related action.

Reasoning chain: Identify the task: right-patient verification before procedure workflow. Extract key facts: similar naming forms, hearing impairment, transporter using room number, and the patient only nodding to a leading question. Apply the rule: two accepted identifiers must be actively confirmed, not guessed. Eliminate distractors: room number is weak; a nod to a suggested name is unsafe; a partially matching armband does not settle identity without verbal or approved alternate confirmation. Verify: if full identifiers and procedure match, proceed; if not, resolve discrepancy and document.

C Exam trap

D Checkpoint

Question: A technologist brings an alert patient into the injection room for a thyroid uptake study. Which action is the most appropriate identity verification step before proceeding?

1. A. Ask, “Are you here for the thyroid test?”
2. B. Match the room number on the schedule to the patient in the chair.
3. C. Ask the patient to state full name and date of birth, then compare with the order and armband.
4. D. Accept the transporter’s confirmation because the patient came from the correct clinic.

Answer: C

• A: Tempting because it sounds like confirmation, but it checks the procedure nickname rather than identity and uses a leading prompt.
• B: Tempting because room assignment seems concrete, but room number is not an accepted unique identifier.
• C: Correct because it uses patient-stated identifiers plus independent source comparison.
• D: Tempting because transport staff often know the destination, but destination is not proof of right patient.

1.1.1.4 Applied verification: matching the patient to the right order and procedure

A Explanation

The next decision conflict is Should you treat identity verification as separate from order review, or must they be reconciled together? On the NMTCB exam, the correct approach is integrated. Right patient and right procedure are linked safety checks. A patient may correctly identify themselves and still have the wrong study queued, the wrong protocol selected, or a dose prepared for a similarly named patient. The single rule that resolves this is: do not proceed until patient identifiers, ordered study, indication, and scheduled workflow all agree.

This is especially important in nuclear medicine because doses may be patient-specific by timing, activity, or preparation. A mismatch can lead to wrong-patient administration, wrong-procedure imaging, or mislabeled image data. See Fig 1. The testable pattern is often a stem where the patient says, “I’m here for my heart test,” but the order is for a bone scan, or where two outpatients have similar names on the same morning list. The correct technologist move is not to reinterpret the order independently; it is to stop and reconcile with protocol and the authorized team.

B Worked example

A 58-year-old woman with breast cancer history and chronic back pain arrives for “the scan my doctor ordered.” She also has hypertension and anxiety. Her chart has a valid name and date of birth match. The electronic order lists a whole-body bone scan, but she says her oncologist told her she was getting a cardiac stress test because of chest tightness. A recent troponin in the chart is normal, which is distracting but not determinative here. The most appropriate technologist action is to stop and reconcile the discrepancy with the ordering team or supervising provider before preparation or administration.

Reasoning chain: Identify the task: reconcile patient identity with the correct intended procedure. Extract key facts: identity itself matches, but the expected exam and order do not. Apply the rule: right patient plus right study must both be confirmed; the technologist cannot independently decide which order is intended. Eliminate distractors: normal troponin does not authorize changing the study; history of cancer does not automatically prove the bone scan is correct today; anxiety does not explain away a procedure mismatch. Verify: only once the order discrepancy is resolved should workflow resume.

C Exam trap

D Checkpoint

Question: A patient correctly states name and date of birth. The order is for a ventilation-perfusion study, but the patient says, “I’m here for my gastric emptying test.” What is the most appropriate next step?

1. A. Proceed with the ventilation-perfusion study because the electronic order is present.
2. B. Continue intake and plan to clarify after radiopharmaceutical administration.
3. C. Stop and reconcile the discrepancy before any dose preparation or administration.
4. D. Ask the patient which test they would prefer and update the workflow accordingly.

Answer: C

• A: Tempting because the order appears official, but unresolved study mismatch makes proceeding unsafe.
• B: Tempting because it seems efficient, but once administration occurs the error risk becomes larger and potentially irreversible.
• C: Correct because right patient alone is not sufficient when the right procedure is uncertain.
• D: Tempting because the patient supplies useful information, but selecting the study is not the technologist’s independent decision.

flowchart TB
A[Schedule review] --> B[Patient arrives]
B --> C[Identity confirmation]
C --> D[Order and procedure match]
D --> E[Dose prepared for correct patient]
E --> F[Pre-administration pause]
F --> G[Acquisition and image label check]

1.1.1.5 Special situations: patients who cannot reliably self-identify

A Explanation

The decision conflict here is Do you lower the standard because the patient cannot answer, or do you change the method while keeping the standard? The correct move is to change the method, not the standard. Inpatients who are sedated, confused, intubated, cognitively impaired, pediatric, aphasic, or hard of hearing may not provide reliable verbal identification. The single finding that changes your process is inability to provide dependable self-identification. That does not permit guessing. It requires institution-approved alternate verification and, if uncertainty remains, escalation before proceeding.

Typical alternate checks include the armband, electronic record, requisition, caregiver or legal representative input, transport documentation, and staff handoff verification. The exam often tests whether you can avoid overtrusting one source. An armband may be incorrect; a family member may be mistaken; transport paperwork may follow the wrong patient. The safe answer is a multi-source match, not a single-source assumption. See Fig 3.

B Worked example

An 81-year-old inpatient is brought for a hepatobiliary scan. He has dementia, atrial fibrillation, and recent opioid analgesia after a fall. He is drowsy and says a different first name than the chart. His wristband matches the requisition, and his daughter at bedside confirms his full name and date of birth. The transporter insists he is the correct patient because he came from the right unit. A low hemoglobin in the chart is distracting but unrelated to the identity task. The most appropriate next step is to verify using the wristband, chart, and caregiver confirmation per protocol, then proceed only if all approved sources agree; if the verbal inconsistency remains unexplained or any source conflicts, stop and escalate.

Reasoning chain: Identify the task: determine whether alternate verification is sufficient. Extract key facts: unreliable self-report due to cognitive impairment and sedation; armband and requisition match; caregiver confirmation supports identity; transporter statement is weak. Apply the rule: strengthen verification using approved alternate sources. Eliminate distractors: the transporter’s confidence is not enough; the patient’s incorrect self-report alone does not automatically prove a mismatch when cognition is impaired; the hemoglobin does not resolve identity. Verify: document why alternate identification was used.

C Exam trap

D Checkpoint

Question: A nonverbal pediatric patient arrives for a renal scan with a parent. Which approach is most appropriate?

1. A. Use the parent’s statement alone because the child cannot speak.
2. B. Verify the armband, compare with the order, confirm with the parent, and follow pediatric protocol documentation.
3. C. Skip identity verification because the patient is a minor accompanied by a guardian.
4. D. Ask the child to nod yes when you say the name printed on the order.

Answer: B

• A: Tempting because the parent is a key source, but one source alone is weaker than multi-source verification.
• B: Correct because it uses alternate approved verification while maintaining redundancy.
• C: Tempting only if someone confuses guardianship with identity proof, but minors still require formal verification.
• D: Tempting because it attempts participation, but nodding to a suggested answer is unreliable.

1.1.1.6 High-risk moments: before dose preparation, administration, and imaging

A Explanation

The central decision conflict is Is one identification check at arrival enough, or do high-risk workflow transitions require another pause? The NMTCB-safe answer is that identity must be confirmed at critical steps, especially before dose preparation assignment, before administration, and before image labeling/acquisition. The single rule is: repeat or re-anchor identity when the workflow changes in a way that could separate the patient from the correct dose or data.

This matters because nuclear medicine workflows are staggered. A patient may be checked in, then wait, then move to injection, then return for delayed imaging. Similar names, multiple doses on the hot lab bench, schedule reshuffling, or room transfers create risk. See Fig 3. The exam often frames this as a busy department with two bone scans and one thyroid uptake patient arriving close together. The correct answer is rarely “work faster.” It is to use deliberate checkpoints.

Choose an additional confirmation when the dose is drawn up for a specific patient, when another staff member hands off the patient, when a delayed image is started hours later, or when the image label/import screen is opened. Reject the idea that once the patient was verified at registration, the rest of the process can run on assumption. In nuclear medicine, data mismatch can be as serious as dose mismatch because the study can be attributed to the wrong record.

B Worked example

A 46-year-old outpatient with obesity and osteoarthritis is scheduled for a three-phase bone scan. She also has hypothyroidism. At check-in, her name and date of birth were correctly verified. Two hours later she returns from the restroom for delayed images, and another technologist is now covering the camera room. A second patient with a similar last name is also waiting for a thyroid scan. The tempting wrong move is to rely on the earlier check-in and the fact that the patient is already in the department. The most appropriate next step is to re-verify identity and confirm the correct study before starting delayed acquisition and image labeling.

Reasoning chain: Identify the task: determine whether re-verification is necessary after a delay and staff handoff. Extract key facts: time gap, covering technologist, similar-name patient nearby, and transition to another critical step. Apply the rule: high-risk transitions require renewed confirmation. Eliminate distractors: prior verification does not cover current risk; patient familiarity is weak; the presence of a recent injection does not guarantee the right person is at the camera now. Verify: once identity and accession match, proceed with imaging.

C Exam trap

D Checkpoint

Question: Which scenario most clearly requires an additional patient identification check?

1. A. An alert patient remains seated in the injection chair for two minutes while supplies are opened.
2. B. A patient returns hours later for delayed imaging after check-in and injection were performed earlier.
3. C. The same technologist re-enters the room to adjust a pillow before acquisition begins.
4. D. A patient asks one clarifying question about the camera time after initial verification.

Answer: B

• A: Tempting because the dose step is important, but there is no major separation event in this brief interval.
• B: Correct because delayed return creates a new high-risk transition where patient-dose-data matching must be re-established.
• C: Tempting because any room re-entry feels like a new step, but this is not the strongest example of workflow separation.
• D: Tempting because patient interaction is ongoing, but a question alone does not create the same misidentification risk as a delayed return.

flowchart TD
A[Discrepancy noted] --> B[Stop dose or imaging workflow]
B --> C[Recheck identifiers, order, schedule]
C --> D{Resolved?}
D -- Yes --> E[Proceed with documented correction]
D -- No --> F[Notify supervisor or authorized provider]
F --> G[Hold procedure until cleared]

1.1.1.7 Discrepancies, documentation, and scope-safe escalation

A Explanation

The final integration conflict is When a mismatch appears, do you solve it yourself by choosing the most likely explanation, or do you stop and escalate within scope? For the NMTCB exam, the correct action is technologist-level resolution only when the discrepancy is straightforward and authorized by protocol; otherwise, stop and escalate. The single finding that resolves this choice is whether identity can be reliably confirmed without independent reinterpretation or unauthorized change. If not, do not proceed.

Examples of scope-safe technologist action include rechecking the armband, re-asking identifiers, comparing the electronic order, confirming the schedule, and contacting the appropriate supervising team member. Out-of-scope actions include independently changing the ordered study, selecting another radiopharmaceutical because the patient says something different, or deciding to ignore a mismatch because the imaging slot is tight. See Fig 4.

Documentation is part of the safety action, not an afterthought. Record what identifiers were used, what discrepancy was found, who was notified, what instructions were received, and whether the procedure proceeded, was delayed, or was rescheduled. Near misses matter because they reveal system weaknesses such as duplicate names, poor handoff, or incomplete labels. On exam questions, the most appropriate next step often includes both safety action and documentation.

B Worked example

A 62-year-old inpatient with COPD and metastatic prostate cancer is scheduled for a bone scan. He also has mild confusion after overnight benzodiazepines. The wristband matches the electronic order, but the syringe label on the prepared dose tray contains a similar last name with one different letter. A nurse says, “It’s probably just a spelling issue—we use the same room every week.” His oxygen saturation is mildly low, which is distracting but not the key issue here. The most appropriate technologist action is to stop the administration workflow, reconcile the label against the verified patient and order, and escalate per protocol before any dose is given.

Reasoning chain: Identify the task: prevent a wrong-patient or wrong-dose event. Extract key facts: dose label mismatch, unreliable convenience explanation, and a prepared radiopharmaceutical awaiting administration. Apply the rule: any unresolved identity discrepancy at the dose-label stage requires stop-verify-escalate. Eliminate distractors: room familiarity is not an identifier; low oxygen saturation may matter clinically but does not resolve the labeling problem; the technologist cannot simply relabel or assume the intended patient. Verify: only proceed after an authorized, documented correction.

C Exam trap

D Checkpoint

Question: Which action is most appropriate when a verified patient’s wristband matches the order, but the prepared dose label appears to belong to a similarly named patient?

1. A. Administer the dose if the procedure room and time slot are correct.
2. B. Handwrite a quick correction on the label and continue.
3. C. Stop the workflow, reconcile the discrepancy, notify the appropriate supervising personnel, and document.
4. D. Ask the patient whether the alternate last name has ever been used in the family.

Answer: C

• A: Tempting because room/time fit the schedule, but those are not sufficient to override a dose-label mismatch.
• B: Tempting because it seems efficient, but self-correcting a traceability problem without formal resolution is unsafe and potentially out of policy.
• C: Correct because dose-to-patient traceability must be re-established before administration.
• D: Tempting because it seeks more information, but patient speculation does not resolve a labeling control failure.

The most common wrong answer in this topic is proceeding on a weak cue because the workflow feels routine. The exam rewards the learner who notices the single unsafe detail that breaks the chain: a leading yes/no question, a mismatch between patient expectation and order, a nonverbal patient verified by only one source, or a mislabeled prepared dose.

• If the stem says “Are you Mr. X?”, think leading prompt and weak verification.
• If the stem says “the patient expected a different exam”, think order reconciliation before any dose action.
• If the stem says “similar names”, think slow down and compare multiple unique identifiers.
• If the stem says “nonverbal, sedated, pediatric, confused”, think alternate approved verification pathway.
• If the stem says “dose label mismatch”, think traceability failure; stop and escalate.
• If the stem says “delayed imaging later the same day”, think repeat identity check at the new critical step.

Related traps from upcoming topics can overlap. For example, once identity is confirmed, the next challenge may be pregnancy screening or contraindication review. A common confusable pattern is thinking a patient-prep issue can be addressed before identity is settled. It cannot; identification comes first, then screening.

Use this approach whenever the question asks for the most appropriate next step after an identity concern. The decision hierarchy is consistent: verify, compare, stop if mismatch, escalate within scope, document. See Fig 4, Fig 5, and Fig 6.

• Patient-stated identifiers -> stronger than yes/no confirmation
• Room number -> location cue, not identity proof
• Correct patient but wrong exam expectation -> order reconciliation problem
• Nonverbal patient -> switch to alternate approved verification, not assumption
• Similar names -> add unique identifier comparison and slow down
• Armband alone -> insufficient if another source conflicts
• Dose label mismatch -> traceability failure requiring stop
• Delayed images later same day -> repeat identity check before acquisition
• Transporter confirmation -> supportive at most, never sole determinant
• Patient familiarity -> dangerous shortcut in repeat-visit departments
• Procedure nickname -> not an accepted identifier
• Identity discrepancy -> stop, verify, escalate, document
• Technologist scope -> verify and notify, do not independently change the ordered study
• Near miss -> document because prevention data improve workflow safety

1. An alert outpatient arrives for a scheduled bone scan. He is wearing a wristband and says, “I come here all the time.” Which action is the most appropriate next step before continuing the workflow?

1. A. Ask him to state his full name and date of birth, then compare them with the order and wristband.
2. B. Accept the wristband as sufficient because he is a returning patient.
3. C. Ask whether he is the bone scan patient and proceed if he says yes.
4. D. Confirm his room assignment and use that as the second identifier.

2. A patient is awake and cooperative for a thyroid study. Which item is the weakest identifier and should not be used as one of the two primary identifiers?

1. A. Date of birth
2. B. Medical record number
3. C. Room number
4. D. Full name

3. A 54-year-old woman with hypertension and osteoarthritis arrives for a scheduled lung scan. She correctly states her name and date of birth, but says her pulmonologist told her she was coming for a gastric emptying study. She is mildly anxious and mentions she skipped breakfast, which makes the gastric study sound plausible. What is the most appropriate next step?

1. A. Proceed with the lung scan because the electronic order is active.
2. B. Stop and reconcile the discrepancy between the patient expectation and the order before any dose action.
3. C. Ask the patient which study she would prefer and update the schedule accordingly.
4. D. Continue intake and clarify only after radiopharmaceutical administration.

4. A 79-year-old inpatient with dementia, hearing impairment, and recent opioid sedation is brought for a hepatobiliary scan. He gives an incorrect birth month when asked. His wristband matches the order, and his daughter confirms his full name and date of birth. The transporter says he came from the correct room. What is the most appropriate technologist action?

1. A. Cancel the procedure because the patient cannot self-identify accurately.
2. B. Use the daughter’s statement alone because family is usually most accurate.
3. C. Use alternate approved verification with wristband, order, and caregiver confirmation, then document the method used.
4. D. Proceed based on the transporter’s confirmation because the unit and room match.

5. A 44-year-old outpatient with rheumatoid arthritis and obesity was verified at check-in and injected for a bone scan. She returns 3 hours later for delayed images, and a different technologist is now covering the camera. Another patient with a similar last name is waiting nearby. What is the most appropriate next step?

1. A. Re-verify the patient’s identity and accession before starting acquisition.
2. B. Proceed because the earlier injection confirms who she is.
3. C. Ask the waiting room clerk whether this is the same patient from earlier.
4. D. Start imaging first and correct the record later if needed.

6. A 63-year-old man with prostate cancer, COPD, and chronic pain arrives for a bone scan injection. He is mildly somnolent after previsit medication. His wristband and electronic order match, but the prepared syringe label shows a similar last name with one different letter. A nurse says the patients are often mixed up on paper and this is probably the intended dose. What is the most appropriate technologist action?

1. A. Administer the dose because the wristband and order match the patient.
2. B. Correct the label manually and continue to avoid wasting the dose.
3. C. Stop the workflow, reconcile the dose label discrepancy, notify appropriate supervising personnel, and document.
4. D. Ask the patient whether the alternate surname spelling has ever appeared in his records.

7. A 32-year-old inpatient with sickle cell disease, pregnancy status not yet reviewed, and severe pain is sent for a ventilation-perfusion study. She correctly states her name and date of birth, but the requisition printed in the camera room carries another patient’s accession number while the wristband and electronic chart match. A respiratory therapist is waiting to begin the ventilation portion. What is the most appropriate next step?

1. A. Proceed because patient identity is correct and the accession can be fixed during processing.
2. B. Pause the workflow and correct the record-link mismatch before imaging begins.
3. C. Ask the respiratory therapist to decide whether imaging should continue.
4. D. Begin the ventilation portion but hold perfusion until the paperwork is clarified.

8. A 6-year-old child with a seizure disorder and developmental delay arrives for a renal scan with both parents. The child cannot reliably answer questions. The armband matches the order, but one parent states the child is scheduled for a gastric emptying study because of nausea, while the other parent says it is the kidney test ordered by nephrology. The schedule and electronic order list a renal scan. What is the most appropriate next step?

1. A. Proceed with the renal scan because the order and armband match, and parent disagreement is not relevant.
2. B. Ask the child to point to where it hurts and use that to infer the correct study.
3. C. Stop and reconcile the procedure discrepancy with the authorized team before dose preparation or administration.
4. D. Let the parents decide which study is more important today.

1. Correct answer: A

• A: Tempting because it is the formal workflow, and it is correct for that exact reason: the patient is alert and can self-identify, so the safest action is patient-stated name and DOB matched to independent records. Single stem clue: the patient is alert and cooperative. Source: Joint Commission patient identification goals; SNMMI practice expectations for safe patient care and documentation.
• B: Tempting because the wristband feels official and the patient is familiar, but returning-patient familiarity does not replace active verification. Single stem clue: “I come here all the time” is a shortcut trap, not proof. Source: Joint Commission.
• C: Tempting because it mentions the study, but asking whether he is the bone scan patient uses a leading prompt and procedure label rather than identity. Single stem clue: the question is yes/no and study-based. Source: Joint Commission.
• D: Tempting because it adds a second data point, but room assignment is not an accepted primary identifier. Single stem clue: room location is logistical, not unique identity. Source: Joint Commission.

2. Correct answer: C

• A: Tempting because learners may think DOB is common and therefore weak, but it remains a standard accepted identifier when used correctly. Single stem clue: the question asks for the weakest identifier. Source: Joint Commission.
• B: Tempting because medical record numbers may feel abstract, but they are often highly useful unique identifiers. Single stem clue: MRN is unique, unlike a room number. Source: Joint Commission.
• C: Correct because room number identifies location, not the individual patient, and can change. Single stem clue: it is a location field rather than patient identity. Source: Joint Commission.
• D: Tempting because full name can be duplicated, but as part of a two-identifier process it remains a standard accepted identifier. Single stem clue: full name is still person-specific, unlike room number. Source: Joint Commission.

3. Correct answer: B

• A: Tempting because the order is active and present, but the patient’s expectation conflicts with the ordered exam, creating a right-procedure issue that must be reconciled before any dose action. Single stem clue: she expected a different study. Source: Joint Commission; SNMMI procedure quality and patient care principles.
• B: Correct because patient identity and correct procedure must both be verified before progression to dose handling or administration. Single stem clue: mismatch between patient expectation and documented order. Source: Joint Commission; SNMMI.
• C: Tempting because the patient is an important information source, but choosing the study is outside technologist autonomy; it requires formal reconciliation. Single stem clue: asks the patient to decide the exam. Source: NMTCB scope expectations; SNMMI.
• D: Tempting because it seems efficient, but after administration the error can be much harder to reverse and may already constitute wrong-procedure care. Single stem clue: “after radiopharmaceutical administration” is too late. Source: Joint Commission; radiation safety principles.

4. Correct answer: C

• A: Tempting because verbal inaccuracy feels disqualifying, but inability to self-identify reliably means you switch methods rather than automatically cancel. Single stem clue: dementia, hearing impairment, and sedation. Source: Joint Commission; patient care safety standards.
• B: Tempting because family often helps, but one source alone is weaker than combined approved sources. Single stem clue: wristband and order are also available and should be used. Source: Joint Commission.
• C: Correct because alternate verification is the proper approach when self-identification is unreliable, and documenting the alternate method preserves traceability. Single stem clue: the patient cannot reliably answer, but multiple confirming sources are present. Source: Joint Commission; SNMMI practice standards.
• D: Tempting because transport staff know the route, but transport location is not a formal identity method. Single stem clue: “correct room” is a location cue only. Source: Joint Commission.

5. Correct answer: A

• A: Correct because delayed imaging, staff handoff, and a similar-name patient create a new high-risk transition requiring renewed identity confirmation. Single stem clue: 3-hour delay plus different technologist. Source: Joint Commission; workflow safety principles in nuclear medicine.
• B: Tempting because prior injection seems to anchor the patient, but it does not protect against delayed-step misidentification. Single stem clue: she returned later for a new critical step. Source: Joint Commission.
• C: Tempting because it uses another staff member, but clerk recognition is weaker than direct re-verification against patient records. Single stem clue: waiting room confirmation is not formal identity verification. Source: Joint Commission.
• D: Tempting because data can be edited in some systems, but starting acquisition under uncertain identity risks wrong-patient labeling and workflow error. Single stem clue: similar last name nearby makes later correction unsafe. Source: Joint Commission; data integrity principles.

6. Correct answer: C

• A: Tempting because the patient and order match, but administration still requires the dose label to trace correctly to that patient. Single stem clue: syringe label name mismatch. Source: Joint Commission; nuclear medicine dose traceability standards.
• B: Tempting because it avoids waste and seems practical, but informal relabeling bypasses controlled reconciliation and documentation. Single stem clue: prepared dose already has a discrepant label. Source: SNMMI radiopharmacy handling principles; institutional traceability expectations.
• C: Correct because a dose-label mismatch creates a wrong-patient risk and must trigger stop-verify-escalate-document before administration. Single stem clue: one-letter last-name difference on the syringe label. Source: Joint Commission; radiation safety practice standards.
• D: Tempting because it seeks clarification, but patient speculation cannot resolve a controlled labeling discrepancy. Single stem clue: this is a dose traceability problem, not a nickname question. Source: Joint Commission.

7. Correct answer: B

• A: Tempting because the patient herself is correctly identified, but the wrong accession number can attach images to the wrong record and is therefore a serious identity-data mismatch. Single stem clue: requisition carries another patient’s accession number. Source: Joint Commission; data integrity expectations in imaging workflows.
• B: Correct because patient verification must extend to the record link used for imaging and processing; accession mismatch must be corrected before imaging begins. Single stem clue: another patient’s accession number is already in the workflow. Source: Joint Commission; SNMMI quality and documentation standards.
• C: Tempting because another clinician is involved in the procedure, but deciding whether to proceed without correcting the identity-data mismatch is not delegated to the therapist. Single stem clue: the problem is record linkage, not ventilation technique. Source: NMTCB scope expectations.
• D: Tempting because it partially delays the study, but beginning any portion under mismatched data still risks wrong-record documentation and workflow confusion. Single stem clue: the error exists before the first image is acquired. Source: Joint Commission.

8. Correct answer: C

• A: Tempting because the armband and order match, but parent disagreement about the intended study creates a right-procedure discrepancy that must be reconciled before dose preparation. Single stem clue: conflicting expectations about which exam was intended. Source: Joint Commission; patient care workflow standards.
• B: Tempting because symptoms may feel helpful, but using a child’s gesture to infer the correct exam is not a valid substitute for order reconciliation. Single stem clue: the issue is procedure mismatch, not symptom localization. Source: NMTCB scope expectations.
• C: Correct because in a nonverbal pediatric patient, identity can be verified through alternate methods, but the procedure discrepancy still requires formal reconciliation before any dose step. Single stem clue: the child cannot self-identify and the adults disagree about the planned study. Source: Joint Commission; SNMMI pediatric care and workflow principles.
• D: Tempting because guardians are central to pediatric care, but they do not independently choose which ordered nuclear medicine study proceeds. Single stem clue: parent preference is not provider authorization. Source: NMTCB scope expectations.