【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 SPECT的日常质控更多还原

【Abstract】 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.更多还原