A Radiology Resident's Guide to Preparing for the First On-Call Shift
Much of the anxiety before a first on-call shift comes not from a lack of knowledge, but from uncertainty: Which examinations are you responsible for? When should you call a...
RadPhrases Editorial Team6 min read
Quick summary The goal of a first on-call shift is not to solve every case alone. It is to prioritize appropriately, seek help promptly, and communicate clearly within a safe system.
Medical safety note This content is intended for the education of radiology residents and trainees. It does not provide patient-specific diagnosis, treatment, or emergency management instructions. Institutional protocols, scope-of-practice limits, and the supervising radiologist's guidance take precedence.
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Why does the first on-call shift feel so difficult?
Much of the anxiety before a first on-call shift comes not from a lack of knowledge, but from uncertainty: Which examinations are you responsible for? When should you call a senior resident or attending radiologist? Will you issue a preliminary report or a final report? To whom should you communicate a critical finding, and how? Unless these questions have clear answers, even strong medical knowledge will not translate into a safe workflow.
The first goal of preparation is therefore not to memorize more diseases, but to make the boundaries of your institution's on-call system visible. The Medical Specialization Board of Türkiye structures radiology training around competencies and progressively increasing responsibilities; your on-call duties should likewise match your level of training, institutional protocols, and faculty supervision. [1]
10 questions you should be able to answer before the shift
Which modalities and patient groups will I be expected to report overnight?
Will my reports remain preliminary, or will they be finalized immediately?
Who is in the first-, second-, and third-level escalation chain?
In which clinical situations am I expected to call a senior resident or attending radiologist without delay?
How do time-sensitive pathways for stroke, trauma, pulmonary embolism, or acute aortic syndromes operate at this institution?
Who should be called first for a contrast reaction, and where is the emergency equipment located?
Is overnight support available for PACS, RIS, voice recognition, and secure messaging systems?
How can I access a prior examination if it is stored in another system?
How should communication of a critical finding be documented in the report and the hospital system?
What format is used at handover for incomplete examinations and pending communications?
Rather than learning the answers during the shift, turn them into a one-page local on-call card in advance. A card organized around roles and escalation phone numbers is more sustainable than one built around individual names.
Workstation and system check
Before the shift begins, confirm that you can log in to PACS and RIS, open prior studies, review image series using the appropriate windows and planes, and save a report. The diagnostic radiology life cycle described by the RCR emphasizes that safe care is a continuous process from referral and image acquisition through delivery of the result. [2] A technical failure at any point can prevent the result from reaching the patient even when the interpretation itself is correct.
Log in to PACS and RIS with your own account; do not use shared credentials.
Test access to prior images and reports.
Learn how the system indicates an incomplete examination or a missing series.
Test dictation, keyboard shortcuts, and report templates with a short practice report.
Learn the phone numbers, forms, and alternative workflow used during system downtime.
For contrast safety, the local protocol comes first
Contrast safety involves more than knowing the types of reactions. Patient assessment, appropriately trained personnel, emergency equipment, medications, observation, and reporting processes must work together. The ACR Manual on Contrast Media is a comprehensive reference, but the steps you take on call are determined by your institution's current protocol and the training you have received. [3]
Before the shift, make sure you personally locate the contrast reaction cart, identify the emergency call number and supervising physician, and learn which form or system is used to record an event.
Do not undertake an intervention independently if you have not been trained to perform it. When in doubt, calling for senior support and emergency assistance without delay is not a sign of inadequacy; it is safe professional behavior.
Prepare a compact reporting toolkit for the first shift
One of the most time-consuming tasks on call is rewriting clinically simple but repetitive sentences. Your toolkit should contain safe wording that supports report structure and communication, rather than automated sentences that make a diagnosis for you.
Limitation statements such as "The examination is limited by motion artifact"
Wording for comparison with prior studies
Statements that clearly identify preliminary report status
A template documenting the date, time, and recipient of critical finding communication
Neutral wording for missing clinical information or an incomplete series
Templates that prompt a systematic order for normal or negative findings
Text expansion tools such as RadPhrases can speed up this wording, but every inserted statement must be reviewed by the physician against the images, the clinical question, and local reporting language. The product also makes clear that clinical control remains with the user. [4]
A safe review cycle to use on call
Identity and request: Is this the correct patient, examination, and clinical question?
Technical adequacy: Is the examination complete? Is there artifact, a missing series, or an incorrect phase?
Systematic review: Use the same fixed sequence for every examination of the same type.
Clinical answer: Do the findings actually answer the question in the request?
Impression and priority: Is the most important finding clear in the impression?
Communication: Is urgent notification required in addition to the report?
Final pause: Check side, level, measurements, prior studies, and typographical errors.
RCR reporting standards consider it fundamental that a report answer the clinical question, be clear enough to prompt appropriate care, and provide access to a second opinion when needed. [5]
When should you ask for help?
Your threshold for asking for help should not be limited to situations in which you do not know the diagnosis. Early consultation is the safer choice when any of the following applies:
You can see the finding but are unsure of its urgency or effect on management.
You are unsure how to frame the impression among several possible diagnoses.
The request, examination protocol, and clinical question appear inconsistent.
You cannot reach the team responsible for receiving a critical finding.
The worklist has grown beyond what can be managed safely, or multiple emergencies have occurred simultaneously.
You notice that fatigue is impairing your attention or decision quality.
A good on-call radiologist is not someone who knows everything alone, but someone who recognizes uncertainty early and involves the right person in time.
Treat handover as seriously as a report
At handover, it is not enough to state how many examinations remain. Separately communicate incomplete examinations, expected additional series, results that were communicated verbally but have not yet been documented, critical findings for which the clinician could not be reached, and cases awaiting senior review.
Patient and examination identity
Current status and pending action
Clinical priority
Who has been informed
The specific action required from the next responsible person
First on-call checklist
☐ I recorded the escalation chain and phone numbers.
☐ I tested PACS, RIS, and the dictation system.
☐ I know the critical finding notification process.
☐ I reviewed the contrast safety protocol and located the emergency equipment.
☐ I clarified responsibility for preliminary and final reports.
☐ I reviewed the local emergency imaging pathways.
Royal College of Radiologists - Standards for interpretation and reporting of imaging investigations, third edition. Source (opens in a new tab)
Clinical use note
This content is educational and is not patient-specific medical advice. Every phrase, template, classification result, and recommendation must be verified and adapted by a physician using the complete examination, clinical context, current guidelines, and institutional protocol.
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