摘要
目的:应用NEMA NU 2-2001标准测试PET/CT的PET成像质量、衰减和散射校正精度性能指标。方法:采用NEMA IEC/2001 PET人体体部模型,按照NEMA标准的测试方法,对PET成像质量和衰减和散射校正精度指标进行测试。结果:衰减和散射校正的精确性相对误差为0.25(n=4)和0.25(n=8)。结论:模型备置和测试数据分析处理比较复杂,严格按照放射活度比制备模型,认真仔细、甚至多次重复处理测试数据,该项测试才能获得准确结果。
Objective To test image quality, accuracy of attenuation and scattering corrections of PET with NEMA NU2- 2001. Methods By using NEMA IEC/2001 PET Phantom,along with the test methods recommended by NEMA NU2-2001, the PET image quality, accuracy of attenuation and scatter corrections were measured. Results Relative error in attenuation and scatter corrections were 0.25 （n=4） and 0.25 （n=8） respectively. Conclusion It＇s difficulty to prepare the phantom and process data. Preparing the phantom according to the radioactivity ratio strictly and processing data carefully even with many times, the exact result of the test can be obtained.
出处
《医疗卫生装备》
CAS
2008年第10期108-110,共3页
Chinese Medical Equipment Journal
