Establishing causation between a radiology misread and a patient’s harm requires connecting the interpretation error to a worse outcome through medical evidence and expert testimony. In Georgia, this connection must satisfy the requirement that the misread probably caused the harm, more likely than not.
Timeline documentation provides the foundation. Showing when imaging occurred, when a correct diagnosis was eventually made, and how the patient’s condition progressed during the interval frames the analysis. A qualified radiologist testifies that competent interpretation would have identified the finding and triggered different clinical action, and the treating physician explains how an earlier, accurate diagnosis would have changed treatment decisions and timing.
Several kinds of evidence reinforce causation. Comparison imaging that shows disease progression between the misread study and the later correct diagnosis can visually demonstrate harm from the delay. Pathology results confirming that the condition was present at the time of the misread strengthen the link. For cancer cases, staging differences and outcome data associated with earlier versus delayed diagnosis are often central, and specialists such as oncologists explain how treatment options narrowed because of the delay. Clinical records documenting additional procedures or complications attributable to the delay support the analysis.
Economic and human impact evidence completes the picture. Records of additional treatment costs establish concrete damages, and testimony about the suffering endured during the diagnostic delay addresses noneconomic harm.
The defense will typically raise alternative causation, arguing that the underlying disease, rather than the misread, produced the outcome, so the plaintiff must address that directly. Because Georgia has not adopted a loss of chance theory, the analysis cannot rest on a showing that accurate interpretation might have improved the odds; it must show that correct interpretation would likely have changed the result. Linking the diagnostic failure to a concrete worsening of the patient’s condition is the core of the causation case.