医学第三章数字化X线机原理.pptVIP

CR特点(总结) 实现了传统X线图象的数字化； 提高了图象的密度分辨率和显示能力； 能实现图象后处理，增加了显示信息的功能； 降低了X线曝光量； 可以不用胶片的形式存储图片，而是以数字形式用磁盘或光盘存储，还能把信息传输给PACS。 * 第三节 数字X线摄影系统 DR系统的原理框图 平板数字探测器 （Flat Panel Detector, FPD） * What Does it Replace ? FLUOROSCOPY - TODAY Electron Image Intensifier TV Pickup Tube X-Ray ANALOG IMAGE Light Tube MAMMOGRAPHY RADIOGRAPHY - TODAY Phosphor Film Light X-Ray ANALOG IMAGE Tube X-Ray X-Ray Detector Tube X-Ray X-Ray ALL APPLICATIONS - DIGITAL DETECTOR DIGITAL IMAGE * Customer Benefits Clinical Productivity Radiography Mammography Image Quality Dose New Applications Computer Aided Det. Exam Time Film/Chemical Cost PACS Front End Teleradiology PRODUCTIVITY + IMPROVED IQ Fluoroscopy Clinical Economic Image Quality Dose Patient Access Exam Time IMPROVED IQ = TOP FLUORO FACTOR From Radiology to “Diagnostic Information Services”... ...Driving Productivity and Better Patient Care * First Film Out of Processor Patient in Room First Exposure Last Exposure Last Film Out of Processor QC Release Patient Conventional Exam With Film 5:30 min 1:30 1:00 2:15 :10 :05 :30 8% Repeat Rate Work Flow Example - PA Lat. Chest * Rapid Work Flow with Minimal Operator Intervention Exam Using Digital Detector Patient in Room First Exposure QC Last Exposure QC Release Patient / Send Study To WS 1:30 :45 :45 3:00 min Minimal Repeats ...Estimated 45% Reduction In Exam Times First Film Out of Processor Patient in Room First Exposure Last Exposure Last Film Out of Processor QC Release Patient Conventional Exam With Film 5:30 min 1:30 1:00 2:15 :10 :05 :30 8% Repeat Rate Work Flow Example - PA Lat. Chest * Benefits Compared to CR and to Film Facility Space Labor Film Equipment $0.5M $1.0M $1.5M $2.0M $2.5M MANUAL CR GE Dig. Det. $2.1MM $1.6MM $1.2MM 7-Year Cum. Image Management Cost 7-YEAR COST* Versus CR: $370K Versus Film: $900K *Dedicated Chest Unit with normal patient throughput Customer Benefits * Digital Mammography Digital Radiography - Chest Digital Radiography - Table Vascular