ASF Standards · Hospital · Standard 13
Standard 13 — Radiology
Criteria in this standard
13.1 — Radiation Dose Optimization and Justification
13.2 — Equipment Quality Assurance and Calibration
13.3 — Timely, Accurate Reporting with Critical Finding Escalation
13.4 — Contrast Media Safety Protocol
13.5 — MRI Safety Screening and Zone Control
13.6 — Image and Report Retention, Accessible for Comparison
13.2 — Equipment Quality Assurance and Calibration
13.3 — Timely, Accurate Reporting with Critical Finding Escalation
13.4 — Contrast Media Safety Protocol
13.5 — MRI Safety Screening and Zone Control
13.6 — Image and Report Retention, Accessible for Comparison
13.1
Radiation Dose Optimization and Justification
Non-Negotiable
Every imaging study involving ionizing radiation is clinically justified before ordering, with dose optimized to the lowest level consistent with diagnostic quality, not a default protocol applied regardless of patient size, age, or clinical indication.
In plain terms: Every scan involving radiation has a real clinical reason behind it, and the dose is genuinely tailored to the patient — not a one-size-fits-all setting applied regardless of who’s actually being scanned.
| Facility category | Crisis | Transitional | Small | Standard |
|---|---|---|---|---|
| Applicability | Where applicable | Full | Full | Full |
Why this matters
A placed order is not the same thing as documented clinical justification — the distinction matters because justification is the step that genuinely weighs the diagnostic benefit against the radiation risk for this specific patient and situation. A pediatric patient given an adult-dose protocol receives meaningfully excess radiation exposure relative to their smaller body size, which is why age- and size-adjusted protocols are a specific, checkable safeguard rather than a general good practice statement.
What good looks like
- Clinical justification is actually documented before the study, not assumed from the order.
- Dose protocols are genuinely adjusted for patient size and age.
- Actual delivered dose is tracked and reviewable.
Common failure modes
- An order is treated as equivalent to documented clinical justification.
- A single adult-dose protocol is applied regardless of patient size or age.
- Dose tracking relies on the intended protocol setting, not verified actual delivery.
Worked example
In practice
A radiology department reviewing its pediatric imaging practice.
BeforeCT studies were performed using a single standard adult protocol regardless of patient age, meaning pediatric patients received meaningfully higher radiation exposure relative to their body size than clinically necessary.
ActionThe department built age- and weight-adjusted dose protocols specifically for pediatric patients, with a required clinical justification field completed before any study is performed, and a dose tracking system logging actual delivered dose per study.
AfterThe Monitor reviewed recent pediatric studies and found age-adjusted protocols applied with documented justification and tracked actual dose for each. Criterion verified.
If you are starting from zero — do this first
- Check whether current protocols are adjusted for patient age and size.
- Build age- and weight-adjusted protocols, particularly for pediatric patients.
- Build a required clinical justification field and an actual dose tracking system.
The most common mistake: Applying a single standard adult imaging protocol regardless of the patient’s actual age or size, which results in meaningfully excess radiation exposure for smaller or pediatric patients relative to what’s clinically necessary.
Self-assessment questions
1. Is clinical justification actually documented before the study is performed, not assumed from the order alone? — An order placed is not the same as a documented clinical justification for that specific radiation exposure.
Evidence: Justification record
Evidence: Justification record
2. Are dose protocols adjusted for patient size and age, particularly for pediatric patients, not a single adult default applied to everyone? — A pediatric patient given an adult-dose protocol receives meaningfully excess radiation exposure.
Evidence: Age/weight-adjusted protocol documentation
Evidence: Age/weight-adjusted protocol documentation
3. Is actual delivered dose tracked and reviewable, not just the protocol setting assumed to reflect what was delivered? — Verified against actual dose records, not only the intended protocol.
Evidence: Dose tracking log
Evidence: Dose tracking log
Common reasons for a PARTIAL answer
- Justification is documented inconsistently, not for every study.
- Pediatric protocols exist but aren’t consistently applied.
Implementation plan
| When | What |
|---|---|
| Week 1 | Audit current dose protocol practice for age/size adjustment. |
| Week 2 | Build age- and weight-adjusted protocols. |
| Week 3 | Build a required justification field and dose tracking system. |
| Ongoing | Review dose tracking data periodically for outliers. |
How the Monitor verifies this
| Method | What | Detail |
|---|---|---|
| DOCUMENT | Dose protocol and justification review | Checks recent pediatric and adult studies for appropriately adjusted protocols and documented justification. |
Evidence base
International Atomic Energy Agency. Radiation Protection and Safety in Medical Uses of Ionizing Radiation. Vienna: IAEA; 2018.
World Health Organization. Communicating Radiation Risks in Paediatric Imaging. Geneva: WHO; 2016.
13.2
Equipment Quality Assurance and Calibration
Non-Negotiable
All imaging equipment undergoes documented quality assurance testing and calibration on a defined schedule by qualified personnel, with any equipment failing to meet standards immediately removed from clinical use until corrected.
In plain terms: Every imaging machine is genuinely tested and calibrated on a real schedule by someone actually qualified to do it — and if it fails, it stops being used immediately, not kept running while a fix is arranged.
| Facility category | Crisis | Transitional | Small | Standard |
|---|---|---|---|---|
| Applicability | Where applicable | Full | Full | Full |
Why this matters
A testing schedule that exists on paper but is routinely missed in practice offers no real protection — the genuine safeguard is a schedule that actually functions, verified against real completion records. Continuing to use equipment known to be out of calibration, while awaiting repair, is a specific and direct patient safety risk, since diagnostic accuracy and radiation dose accuracy both depend on properly calibrated equipment.
What good looks like
- Quality assurance testing is actually performed on schedule, verified against records.
- Equipment failing standards is immediately removed from clinical use.
- Testing is performed by genuinely qualified, verifiable personnel.
Common failure modes
- A testing schedule exists but is routinely missed or delayed.
- Equipment known to be out of calibration stays in service while awaiting repair.
- Testing is done informally by whoever is available, not specifically qualified staff.
Worked example
In practice
A department discovering a mammography unit outside calibration tolerance.
BeforeRoutine testing revealed a mammography unit was outside acceptable calibration tolerance, but the unit remained in clinical use for an additional two weeks while awaiting a service technician, since no backup unit was readily available.
ActionThe department built a hard rule immediately removing any failing equipment from clinical use, with a backup equipment arrangement or referral pathway to a partner facility built in for exactly this situation.
AfterThe Monitor reviewed a subsequent calibration failure and found the equipment immediately taken out of service, with patients redirected to a partner facility until repair was completed. Criterion verified.
If you are starting from zero — do this first
- Check current testing completion records against the required schedule.
- Build a hard rule for immediate removal of failing equipment.
- Arrange a backup equipment or referral pathway for exactly this situation.
The most common mistake: Keeping equipment known to be outside calibration tolerance in clinical use while awaiting repair, because no backup arrangement exists, rather than treating the removal as a genuine hard stop.
Self-assessment questions
1. Is quality assurance testing actually performed on schedule, verified against real completion records, not just a schedule that exists on paper? — A testing schedule that’s routinely missed is not functioning.
Evidence: Testing completion log
Evidence: Testing completion log
2. Is equipment failing quality standards immediately removed from clinical use, not kept in service while awaiting repair? — Continued use of equipment known to be out of calibration is a specific, direct patient safety risk.
Evidence: Equipment removal record
Evidence: Equipment removal record
3. Is testing performed by genuinely qualified personnel, verifiable through credentials, not informally by whoever is available? — Quality assurance testing requires specific technical qualification, not general staff availability.
Evidence: Tester credential verification
Evidence: Tester credential verification
Common reasons for a PARTIAL answer
- Testing happens but is occasionally delayed past the scheduled date.
- No backup arrangement exists for when equipment must be removed.
Implementation plan
| When | What |
|---|---|
| Week 1 | Audit current testing completion against the schedule. |
| Week 2 | Build a hard removal rule for failing equipment. |
| Week 3 | Arrange a backup equipment or referral pathway. |
| Ongoing | Track testing schedule adherence and any removal events. |
How the Monitor verifies this
| Method | What | Detail |
|---|---|---|
| DOCUMENT | Testing record review | Checks quality assurance completion records against the required schedule and any equipment removal events. |
Evidence base
International Atomic Energy Agency. Radiation Protection and Safety in Medical Uses of Ionizing Radiation. Vienna: IAEA; 2018.
13.3
Timely, Accurate Reporting with Critical Finding Escalation
Non-Negotiable
Imaging studies are reported within a defined time frame appropriate to clinical urgency, with a documented, genuinely functioning critical finding communication protocol ensuring an urgent result reaches the ordering clinician directly, not left in a queue for routine review.
In plain terms: Reports go out within a real, tracked timeframe, and a critical finding genuinely reaches the ordering clinician directly — not sitting in a routine queue where it could go unnoticed.
| Facility category | Crisis | Transitional | Small | Standard |
|---|---|---|---|---|
| Applicability | Where applicable | Full | Full | Full |
Why this matters
A general sense that reports “go out quickly enough” is considerably less reliable than actual tracked turnaround data against a defined target — perception and reality can diverge meaningfully without active measurement. A critical finding left in the standard reporting queue, awaiting routine review rather than triggering direct, immediate communication, can go unnoticed for a dangerously long period precisely when urgent action is needed.
What good looks like
- Reporting turnaround time is actually tracked and meeting defined targets.
- A critical finding triggers genuine, direct, documented communication, not a routine queue entry.
- A documented instance exists of the critical finding protocol actually being used.
Common failure modes
- Turnaround time is assumed adequate without actual tracking.
- A critical finding is entered into the standard queue rather than directly communicated.
- No example exists of the critical finding protocol ever actually being used.
Worked example
In practice
A radiologist identifying an unexpected critical finding during a routine study.
BeforeAn unexpected critical finding was entered into the standard reporting system, which the ordering physician would see once they next checked their results queue, with no direct notification sent, risking a significant delay before the finding was actually seen.
ActionThe department built a mandatory direct-call protocol for any critical finding, requiring the radiologist to personally reach the ordering clinician or a covering provider, documented with the time of notification.
AfterThe Monitor reviewed a recent critical finding record showing a direct call made and documented within minutes of the finding being identified. Criterion verified.
If you are starting from zero — do this first
- Build a mandatory direct-communication protocol for critical findings.
- Build a turnaround time tracking system against defined targets.
- Check whether a real instance of the critical finding protocol exists.
The most common mistake: Entering a critical finding into the standard reporting queue, where the ordering physician would see it only when they next happen to check, rather than triggering immediate, direct, documented communication.
Self-assessment questions
1. Is reporting turnaround time actually tracked and meeting defined targets, not assumed to be adequate? — Verified against real turnaround data, not a general sense that reports “go out quickly enough.”
Evidence: Turnaround time tracking data
Evidence: Turnaround time tracking data
2. Does a critical finding trigger genuine, direct, documented communication to the ordering clinician, not just entered into the standard reporting queue? — A critical finding left in a routine queue can go unnoticed for a dangerously long period.
Evidence: Critical finding protocol
Evidence: Critical finding protocol
3. Is there a documented instance of the critical finding protocol actually being used? — Evidence the protocol genuinely functions, not just exists on paper.
Evidence: Critical finding notification record
Evidence: Critical finding notification record
Common reasons for a PARTIAL answer
- Turnaround tracking exists but isn’t actively reviewed against targets.
- A critical finding protocol exists but has never actually been used or tested.
Implementation plan
| When | What |
|---|---|
| Week 1 | Build a turnaround time tracking system. |
| Week 2 | Build a mandatory direct-communication protocol for critical findings. |
| Week 3 | Brief all radiology staff on the critical finding protocol. |
| Ongoing | Review turnaround data and any critical finding events periodically. |
How the Monitor verifies this
| Method | What | Detail |
|---|---|---|
| DOCUMENT | Critical finding record review | Reviews turnaround time data and a specific critical finding notification record for direct, documented communication. |
Evidence base
World Health Organization. Patient Safety: Make Health Care Safer. Geneva: WHO; 2021.
13.4
Contrast Media Safety Protocol
Core
A written protocol governs contrast media use, including pre-screening for allergy and renal function, informed consent, and a documented, immediately accessible emergency response plan for a contrast reaction — not a generic allergy question treated as sufficient screening.
In plain terms: Contrast safety screening genuinely covers both allergy and kidney function, and emergency response equipment for a reaction is right there, ready to go — not a quick allergy question treated as the whole check.
| Facility category | Crisis | Transitional | Small | Standard |
|---|---|---|---|---|
| Applicability | Where applicable | Full | Full | Full |
Why this matters
A generic “any allergies?” question, while useful, doesn’t specifically address renal function, which matters distinctly for contrast safety and is easy to overlook without a dedicated check — treating allergy screening as the whole safety picture misses a real, checkable gap. A contrast reaction can develop rapidly, which is why emergency response equipment and medication genuinely need to be immediately accessible at the point of care, not stored elsewhere requiring retrieval time that could matter in a fast-developing reaction.
What good looks like
- Pre-screening genuinely covers both allergy history and renal function.
- Emergency response equipment is immediately accessible at the point of care.
- Staff are drilled on the emergency response protocol, not just given a reference document.
Common failure modes
- Screening covers allergy but not renal function specifically.
- Emergency response equipment is stored elsewhere, requiring retrieval time.
- Staff have read the protocol but have never actually drilled it.
Worked example
In practice
A radiology department reviewing its contrast screening practice.
BeforePre-screening consisted of a general allergy question with no specific renal function check, and emergency response medication for a contrast reaction was stored in a central pharmacy requiring a several-minute retrieval during an actual event.
ActionThe department built a specific renal function screening step into pre-contrast workup, and relocated emergency response medication to a dedicated, immediately accessible cart within the imaging suite, with a quarterly drill schedule.
AfterThe Monitor confirmed renal function screening was documented for recent contrast studies, found emergency equipment immediately accessible, and reviewed a recent drill record. Criterion verified.
If you are starting from zero — do this first
- Build a specific renal function screening step, not just a general allergy question.
- Relocate emergency response equipment to be immediately accessible at the point of care.
- Build a regular drill schedule for the emergency response protocol.
The most common mistake: Treating a general allergy question as sufficient pre-contrast screening, without a specific renal function check, and storing emergency response equipment somewhere that requires meaningful retrieval time during an actual fast-developing reaction.
Self-assessment questions
1. Does pre-screening genuinely cover both allergy history and renal function, not a generic “any allergies?” question alone? — Renal function specifically matters for contrast safety and is easy to overlook without a specific check.
Evidence: Pre-screening record
Evidence: Pre-screening record
2. Is emergency response equipment and medication for a contrast reaction immediately accessible at the point of care, not stored elsewhere requiring retrieval time? — A contrast reaction can develop rapidly; retrieval delay for emergency response equipment is a specific, direct risk.
Evidence: Equipment location inspection
Evidence: Equipment location inspection
3. Are staff drilled on the emergency response protocol, not only given it as a reference document? — A drilled response functions differently under real stress than one only read about.
Evidence: Drill record
Evidence: Drill record
Common reasons for a PARTIAL answer
- Screening covers allergy but renal function checking is inconsistent.
- Emergency equipment is nearby but not genuinely immediately accessible.
Implementation plan
| When | What |
|---|---|
| Week 1 | Build a specific renal function screening step. |
| Week 2 | Relocate emergency response equipment to immediate point-of-care access. |
| Week 3 | Run an initial emergency response drill. |
| Ongoing | Repeat drills on a regular schedule. |
How the Monitor verifies this
| Method | What | Detail |
|---|---|---|
| OBSERVE | Point-of-care inspection | Confirms emergency response equipment accessibility and checks recent pre-screening records. |
Evidence base
World Health Organization. Patient Safety: Make Health Care Safer. Geneva: WHO; 2021.
13.5
MRI Safety Screening and Zone Control
Core
Every patient and accompanying individual is screened for MRI contraindications before entering the magnetic field, with physical zone control preventing unscreened access — not a screening form completed but not actually verified before entry.
In plain terms: Everyone, patient or accompanying person, is genuinely screened before entering the magnet room, with a real physical barrier preventing unscreened access — not just a form filled out somewhere earlier and a posted warning sign.
| Facility category | Crisis | Transitional | Small | Standard |
|---|---|---|---|---|
| Applicability | Where applicable | Full | Full | Full |
Why this matters
A screening form completed earlier in the process, but not actually verified at the point of entry into the magnet room, provides no genuine protection — the verification step itself is what actually prevents an unscreened person or metallic object from entering the field. A posted warning sign relies on an individual’s own judgment and attention; a genuine physical barrier or access control is the real safeguard, and this distinction matters because MRI contraindication incidents, though rare, can be serious.
What good looks like
- Screening is genuinely verified at the point of entry, not just completed earlier.
- Physical zone control genuinely prevents unscreened access, not just a posted sign.
- Accompanying individuals are also genuinely screened, not only the patient.
Common failure modes
- A screening form is completed but not re-verified at the magnet room entry.
- Access relies on a posted sign rather than a genuine physical barrier.
- Accompanying family members or support persons aren’t screened.
Worked example
In practice
A family member accompanying a pediatric patient for an MRI.
BeforeThe patient’s screening form was completed at intake, but when a parent accompanied the child into the scan room for comfort, the parent themselves had not been screened, relying only on a posted warning sign at the door.
ActionThe department built a mandatory screening verification step at the magnet room door itself, covering any accompanying individual, with a physical access-controlled entry preventing anyone unscreened from proceeding.
AfterThe Monitor observed the screening verification process at the magnet room entry and confirmed an accompanying parent was screened before entry. Criterion verified.
If you are starting from zero — do this first
- Build a mandatory screening verification step at the magnet room entry itself.
- Extend screening explicitly to any accompanying individual.
- Build a genuine physical access control, not just a posted sign.
The most common mistake: Relying on a screening form completed earlier in the process, without a genuine re-verification step at the actual point of entry into the magnet room, and relying on a posted warning sign rather than a real physical access barrier.
Self-assessment questions
1. Is screening genuinely verified before entry into the magnet room, not just a form completed somewhere earlier in the process? — A completed form that isn’t actually checked at the point of entry provides no real protection.
Evidence: Entry verification process
Evidence: Entry verification process
2. Does physical zone control genuinely prevent unscreened individuals from entering, not relying solely on a sign or verbal instruction? — A physical barrier or access control, not just a posted warning, is the genuine safeguard.
Evidence: Zone control inspection
Evidence: Zone control inspection
3. Are accompanying individuals — not just the patient — also genuinely screened? — A family member or support person entering unscreened carries the same risk as an unscreened patient.
Evidence: Accompanying-individual screening record
Evidence: Accompanying-individual screening record
Common reasons for a PARTIAL answer
- Patients are screened but accompanying individuals sometimes aren’t.
- Zone control relies more on signage than a genuine physical barrier.
Implementation plan
| When | What |
|---|---|
| Week 1 | Review current screening verification practice at point of entry. |
| Week 2 | Build a mandatory entry-point verification step covering accompanying individuals. |
| Week 3 | Build or confirm a genuine physical access control. |
| Ongoing | Observe entry practice periodically for consistency. |
How the Monitor verifies this
| Method | What | Detail |
|---|---|---|
| OBSERVE | Entry point observation | Observes the screening verification process and physical access control at the magnet room entry. |
Evidence base
World Health Organization. Patient Safety: Make Health Care Safer. Geneva: WHO; 2021.
13.6
Image and Report Retention, Accessible for Comparison
Standard
Imaging studies and reports are retained per the required retention period and genuinely retrievable for comparison with prior studies, not archived in a way that makes practical retrieval difficult or unreliable.
In plain terms: Old studies are genuinely easy to pull up for comparison, not technically retained but practically a hassle to actually retrieve — and there’s real backup protection against data loss.
| Facility category | Crisis | Transitional | Small | Standard |
|---|---|---|---|---|
| Applicability | Where applicable | Full | Full | Full |
Why this matters
A comparison that’s technically possible but practically cumbersome enough to discourage actually doing it defeats the real clinical purpose of retention — comparison with prior studies is often genuinely significant for detecting subtle change over time, and friction in retrieval directly undermines whether that comparison actually happens in practice. A single point of failure in image storage, with no backup or redundancy, is a specific and serious risk given how much clinical history can be lost at once if that single system fails.
What good looks like
- Prior studies are genuinely, quickly retrievable for comparison.
- The retention period is actually met and verifiable against real retrieval.
- A documented backup or redundancy process protects against data loss.
Common failure modes
- Retrieval is technically possible but cumbersome enough to discourage actual use.
- The retention period is stated but not verified through actual older-study retrieval.
- No backup or redundancy protects against a single point of storage failure.
Worked example
In practice
A radiologist needing to compare a current study against one from three years prior.
BeforeRetrieving a study older than one year required a manual request to a separate archive system with a multi-day turnaround, which in practice meant radiologists rarely bothered requesting older comparisons even when clinically relevant.
ActionThe department upgraded its archiving system to keep the full required retention period immediately accessible within the standard viewing system, eliminating the separate manual request step, alongside a redundant off-site backup.
AfterThe Monitor tested retrieval of a three-year-old study and found it immediately accessible within the standard system, with the backup system confirmed functional. Criterion verified.
If you are starting from zero — do this first
- Test actual retrieval time for an older study right now.
- Build or upgrade archiving to keep the full retention period immediately accessible.
- Build a redundant backup system.
The most common mistake: An archiving system that technically retains studies for the required period but makes older-study retrieval cumbersome enough, through a separate manual process, that radiologists in practice rarely bother requesting a clinically relevant comparison.
Self-assessment questions
1. Are prior studies genuinely, quickly retrievable for comparison, not a retrieval process that’s cumbersome enough to discourage actually checking? — A comparison that’s technically possible but practically avoided due to friction defeats the purpose.
Evidence: Retrieval time test
Evidence: Retrieval time test
2. Is the retention period actually met and verifiable, not assumed from a general archiving practice? — Verified against actual retrieval of an older study, not just a stated retention policy.
Evidence: Older-study retrieval test
Evidence: Older-study retrieval test
3. Is there a documented backup or redundancy process protecting against data loss? — A single point of failure in image storage is a specific, serious risk.
Evidence: Backup system documentation
Evidence: Backup system documentation
Common reasons for a PARTIAL answer
- Studies are retained but retrieval beyond a recent window is cumbersome.
- No genuine redundancy exists beyond the primary storage system.
Implementation plan
| When | What |
|---|---|
| Week 1 | Test current retrieval time for a study beyond the recent window. |
| Week 2 | Build or upgrade archiving for immediate full-period accessibility. |
| Week 3 | Build a redundant backup system. |
| Ongoing | Periodically test retrieval and backup system functionality. |
How the Monitor verifies this
| Method | What | Detail |
|---|---|---|
| DOCUMENT | Retrieval test | Tests retrieval of a study near the end of the required retention period and confirms backup system function. |
Evidence base
International Atomic Energy Agency. Radiation Protection and Safety in Medical Uses of Ionizing Radiation. Vienna: IAEA; 2018.