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How to Become a Radiology Expert Witness

By John Mahoney · August 20, 2026

Radiology malpractice has a signature problem no other specialty shares: once you know the answer, the finding on the film becomes obvious — so every missed-finding case is fought on whether it was reasonably visible prospectively, not whether it is visible now.

Why radiology expertise is in demand

The core defense in a missed-finding case is retrospective visibility bias: a nodule circled in red at trial looked different on a screening study read among hundreds. A practicing radiologist can explain perception error, satisfaction of search, and what a reasonable read looks like under real conditions — the exact framing that separates a defensible miss from a deviation.

The cases you would actually review

Most radiology expert work clusters around a recognizable set of fact patterns: the missed finding on the film — lung nodules, subtle fractures, early bleeds — perception versus interpretation errors, communication of critical findings, comparison with priors, and the retrospective-visibility problem where a finding is obvious once you know it is there. If these are the cases you manage or operate on now, you are qualified to opine on them — currency in the specific area at issue matters more than academic seniority.

What qualifies you

The standard is Federal Rule of Evidence 702 — knowledge, skill, experience, training, or education — not fame. In practice, attorneys screening a radiology expert look for: current board certification, active practice in the specialty, routine hands-on experience with the specific procedure or condition in the case, a clean disciplinary record, and the ability to explain the medicine clearly to a jury. If you meet those, you clear the bar today.

What the work involves

A case arrives as records. You review them, form an opinion on whether the care met the standard and whether any deviation caused the harm, and put that opinion in writing. Most cases settle; a minority reach a deposition scheduled around your availability; very few go to trial. The reading is the bulk of the work, and it is schedulable around a clinical practice — the heaviest hours are yours to place.

What it pays

Physician expert review runs at specialist rates, typically several hundred dollars an hour for file review with a higher rate for testimony and a retainer collected before work begins. The engagement is paid for your judgment about your own specialty — the part of your expertise clinical practice never bills separately.

Plaintiff, defense, or both

The durable path is to take cases from both sides and decline from both sides. An expert who has only ever worked one side is impeached with that fact in every deposition; working both keeps the reasoning honest and the credibility intact. Your obligation is to the standard of care as you understand it, not to whoever sent the retainer — including the willingness to tell a retaining attorney that a case has no merit.

Preparing for the deposition

The medicine is rarely what trips up a radiology expert. The format is. A deposition inverts the instincts that make you a good clinician — filling silence, helping with vague questions, answering "it depends" as though completeness is the goal. Those are all conversions opposing counsel is trained to make. Rehearsing the format against the techniques that will actually be used is the difference between an expert who holds up and one who gets read back their own words at trial.

Walk Into Your Deposition Prepared

The medicine is rarely what trips up a physician expert. The format is. Deposition practice built for physicians lets you rehearse the hard questions — and the techniques opposing counsel actually uses — before it counts.

Practice Your Deposition →