Changes in Dose-Area Product, Entrance Surface Dose, and Lens Dose to the Radiologist in a Vascular Interventional Laboratory when an Old X-ray System Is Exchanged with a New System
- نوع فایل : کتاب
- زبان : انگلیسی
- مؤلف : Kristin Jensen Livia Zangani Anne Catrine Martinsen Gunnar Sandbوk
- چاپ و سال / کشور: 2010
Description
Purpose The aim of this study was to compare dose-area product (DAP), entrance surface dose (ESD), and lens dose to radiologists for an old and a new X-ray system in a vascular interventional laboratory. Materials and Methods DAP, ESD, fluoroscopy time, number of images, and patient weight were recorded for patients undergoing the following four procedures: percutaneous transluminal angioplasty (PTA) and stenting (divided into two subgroups, lower extremities and pelvis), nephrostomy, and treatment for varicocele. Halfway through the registration period, the 9-year-old X-ray equipment was exchanged with a new system. Lens doses to the radiologist were measured. Results There was a reduction in DAP for all procedures: PTA lower extremities 31% (12–8 Gy cm2), PTA/stenting pelvis 67% (134–44 Gy cm2), nephrostomy 39% (7–4 Gy cm2), and varicocele 70% (37–11 Gy cm2). The reduction in number of images was 17% (158–131), 23% (153–118), 68% (2–1), and 31% (50–35), explaining a part of the dose reduction. The reduction in ESD was 33, 60, 38, and 46%. The differences in measured lens doses indicate a dose reduction in three procedures (19–53%) and an increase in one (56%), but differences are not statistically significant. Conclusion DAP and ESD from the X-ray system were reduced for all procedures. The reduction was greater in the more radiation-demanding procedures.
Cardiovasc Intervent Radiol (2011) 34:717–722 DOI 10.1007/s00270-010-0017-6 Received: 21 June 2010 / Accepted: 7 October 2010 / Published online: 11 November 2010
