Current status of low dose multi-detector CT in the urinary tract  

作　　者：Mi Kim Sung Sarabjeet Singh Mannudeep K Kalra 

机构地区：[1]Myongji Hospital,Kwandong University,522 Naegok-dong,Gangneung-si,Gangwon-do 220-801,South Korea [2]Department of Radiology Massachusetts General Hospital Imaging,Harvard Medical School,55 Fruit St,Boston,MA 02114,United States

出　　处：《World Journal of Radiology》2011年第11期256-265,共10页世界放射学杂志（英文版）（电子版）

摘　　要：Over the past several years,advances in the technical domain of computed tomography(CT) have influenced the trend of imaging modalities used in the clinical evaluation of the urinary system.Renal collecting systems can be illustrated more precisely with the advent of multi-detector row CT through thinner slices,high speed acquisitions,and enhanced longitudinal spatial resolution resulting in improved reformatted coronal images.On the other hand,a significant increase in exposure to ionizing radiation,especially in the radiosensitive organs,such as the gonads,is a concern with the increased utilization of urinary tract CT.In this article,we discuss the strategies and techniques availablefor reducing radiation dose for a variety of urinary tractCT protocols with metabolic clinical examples.We also reviewed CT for hematuria evaluation and related scan parameter optimization such as,reducing the number of acquisition phases,CT angiography of renal donors and lowering tube potential,when possible.Over the past several years, advances in the technical domain of computed tomography (CT) have influenced the trend of imaging modalities used in the clinical evaluation of the urinary system. Renal collecting systems can be illustrated more precisely with the advent of multi-detector row CT through thinner slices, high speed acquisitions, and enhanced longitudinal spatial resolution resulting in improved reformatted coronal images. On the other hand, a significant increase in exposure to ionizing radiation, especially in the radiosensitive organs, such as the gonads, is a concern with the increased utilization of urinary tract CT. In this article, we discuss the strategies and techniques available for reducing radiation dose for a variety of urinary tract CT protocols with metabolic clinical examples. We also reviewed CT for hematuria evaluation and related scan parameter optimization such as, reducing the number of acquisition phases, CT angiography of renal donors and lowering tube potential, when possible.

关 键 词：HEMATURIA evaluation Low dose COMPUTEDTOMOGRAPHY Multi-detector row COMPUTED TOMOGRAPHY Renal donor COMPUTED TOMOGRAPHY angiography Urinary TRACT imaging 

分 类 号：R816.7[医药卫生—放射医学]