Synopsis
Select, inspect and interpret common imaging safely, integrating technical adequacy, anatomy, clinical probability and explicit follow-up rather than treating the report as an isolated answer.
- Start with identity, date, modality, body region, projection or phase and comparison studies; an image belonging to the wrong person or episode cannot answer the question.
- Define the clinical question before inspecting abnormalities, because modality, protocol and pre-test probability determine what a negative or positive study can mean.
- Judge technical adequacy before interpretation: coverage, positioning, exposure, motion, contrast timing and artefact can conceal disease or simulate it.
Reasoning priorities
Define the diagnosis or decision the image should address and identify time-critical alternatives.
A focused question lets the radiologist choose protocol and determines whether a negative result reduces probability enough to stop or requires another test.
Worked reasoning
A 71-year-old develops sudden pleuritic pain and hypoxaemia. A portable AP chest radiograph is labelled “no focal consolidation”; pulmonary embolism remains clinically plausible.
- Verify identity, timing, AP projection and image quality, then inspect lungs, pleura, mediastinum, bones and devices systematically rather than equating no consolidation with no acute disease.
- Represent the question as acute hypoxaemia with pleuritic pain and a radiograph that lacks an alternative explanation; the study was not designed to exclude pulmonary embolism.
- Reassess physiology and calculate the NICE two-level pulmonary embolism Wells score. If PE is likely, arrange immediate CTPA, or assess suitability for V/Q imaging when contrast allergy, severe renal impairment or high radiation risk changes the choice; follow the NICE interim anticoagulation pathway if imaging cannot be obtained immediately.
- Read and act on the definitive report, record the decision and contingency, and verify that any recommended imaging or treatment decision has an identified owner before transfer.