DAP
Dose-Area Product (also kerma-area product, KAP) — fluoroscopic dose multiplied by beam area at the patient surface, integrated over the whole exam. Reported in Gy·cm² or μGy·m². The cumulative-exam dose metric for interventional X-ray and fluoroscopy.
Why it matters to buyers: Regulatory limit and quality metric. Reported per case in modern fixed fluoroscopy and angiographic systems. State fluoroscopy-dose-tracking regulations and accreditation frameworks reference DAP. Dose-management software (ClarityIQ, CARE / CLEAR, AutoEx) shifts cumulative DAP at matched diagnostic quality.
Why it matters to engineers: DAP meters are part of the fluoroscopy chain; calibration drift is a routine physics-QA finding. Failing DAP-meter QA blocks accreditation independent of clinical performance. Annual physicist trace is the documentation-of-record.