主观因素对SPECT固有泛源均匀性测试影响的探讨  

Discussion of subjective factors affecting the intrinsic flood field uniformity of SPECT

作　　者：张金山 陈次渝 李舜 

机构地区：[1]广州市第二人民医院核医学科,广州510150

出　　处：《核电子学与探测技术》2000年第4期312-314,共3页Nuclear Electronics & Detection Technology

摘　　要：讨论了在点源与探头近距离、探头成角、周围有放射源干扰、采集总计数不足和大剂量点源等主观因素对 SPECT仪的固有泛源均匀性测试结果的影响 ,以指导The intrinsic flood field uniformity is an important content of SPECT QC, while many factors can contribute to the incorrect measurement of it. For the guarantee of SPECT QC, this paper will discuss the subjective factors affecting the measurements of the SPECT intrinsic flood field uniformity, such as a close distance between radiosource and detector, radiation shooting detector at an angle, the interference of radiation coming from around, insufficient total counts, higher dose of the radiosource etc.

关 键 词：SPECT 主观因素 固有泛源 均匀性测试 

分 类 号：R814.42[医药卫生—影像医学与核医学]