Who is responsible for clinical justification of a radiographic exam, and what is the basis for this justification?

• A. The radiology department alone is responsible for justification.
• B. Clinical justification is based on diagnostic need and is the responsibility of the referring clinician together with the radiology team.
• C. Justification is determined solely by patient preference.
• D. Justification is not required for routine exams.

Answer: (B)

Understanding clinical justification means recognizing that imaging is used only when its potential diagnostic benefit justifies the radiation exposure. The best approach is a collaborative decision between the referring clinician and the radiology team, based on diagnostic need. The clinician provides the clinical indication and context, while the radiology team reviews the history, prior images, and uses guidelines to confirm the exam is appropriate and selects an appropriate protocol. The core basis is whether the exam is likely to change patient management or outcomes; if the information gained wouldn’t affect care, imaging isn’t justified. In this process, safer or non-ionizing alternatives should be considered when possible, in line with ALARA. Patient preference plays a role in shared decision-making but does not by itself justify exposure. Justification is required for routine exams as well, ensuring every imaging study has a clear clinical reason.