醫(yī)學報告dosemeasure(已修改)
2025-05-23 11:13 本頁面
【正文】 Dose Measurements amp。 Image Quality of Chest Xrays ChiaJung Li Image Quality Patient Dose Patient Dose amp。 Image Quality Patient Dose Image Quality Optimization Dose Different Doses in Radiography Patient dose (required) Dose indices (measured) Dose indices (measured) Surface Dose: With Patient/Phantom Incident Dose: No Patient/Phantom ESD TLD Entrance Surface Dose (ESD) DoseArea Product (DAP) DAP meter Lack of backscatter DAP Independence of DAP with Distance ESD Gy Area cm2 DAP Gy cm2 BSF Relation Between DAP and ESD Backscatter Factor ESD = fD,K Ka BSF ESD: dosetoair at entrance surface of the p’t (Gy) fD,K : conversion factor between Ka amp。 ESD。 fD,K= Ka: air kerma (Gy) BSF:BSF=F(HVL,A) The British Journal of Radiology,70(1997),S Rannikko Advantages of DAP Over ESD Effective Dose small Effective Dose large Same ESD Diff. DAP 醫(yī)院評鑑等級 Medical Center Area Hospital Regional Hospital Clinic and others Distribution of Mean ESD at 20 Hospitals in UK ESD (mGy) Mini. 1st Quartile Med. 3rd Quartile Max. Chest Xray (PA) Ho
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