在用西门子mCT型PET/CT性能测试分析研究
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摘要
目的:建立m CT型PET/CT性能测试流程、方法学,开展技术评估。方法:依据国家标准GB17589-2011"X射线计算机断层摄影装置质量保证检测规范"和美国国家电气制造商协会(NEMA)NU 2-2007标准,利用核医学性能测试模体以及CT模体,对Siemens m CT型的PET/CT设备进行性能测试。结果:空间分辨力(FWHM):1 cm处横向4.16 mm,轴向4.04 mm;10cm处横向4.92 mm,轴向5.74 mm;系统灵敏度为9.6 s-1·k Bq-1、散射分数:35.4%、计数丢失和随机符合:1.69×105 s-1。PET性能指标依据国家标准,参考厂商标准及CT性能指标,测试结果均合格。结论:所采用的测试方法有效,测试技术流程符合国家标准GB 17589-2011。坚持定期用于PET/CT质量控制,对满足临床应用将起到技术保障作用。
Objective: It is to discuss results and significance of PET/CT in the performance tests. Methods: According to NEMA NU 2-2007 Performance Measurements of Positron Emission Tomographs and GB 17589-2011 specifications for quality assurance test for computed tomography X-ray scanners standards, with phantoms of nuclear medicine and CT, performance testing was done. Results: Spatial Resolution(FWHM): transverse 1 cm 4.16 mm, axial: 1 cm 4.04 mm, transverse 10 cm 4.92 mm, axial: 10 cm 5.74 mm. Sensitivity: 9.6 s-1·k Bq-1, scatter fraction: 35.4%, peak NEC rate: 1.69×105 s-1. Conclusion: According to manufacturers and national standards, the results of performances testing are up to standard. It is necessary to enhance the effect of in quality control(QC) of PET/CT and the fundamentality of the performance tests, so that the devices come to the demands for clinical practice.
Objective: It is to discuss results and significance of PET/CT in the performance tests. Methods: According to NEMA NU 2-2007 Performance Measurements of Positron Emission Tomographs and GB 17589-2011 specifications for quality assurance test for computed tomography X-ray scanners standards, with phantoms of nuclear medicine and CT, performance testing was done. Results: Spatial Resolution(FWHM): transverse 1 cm 4.16 mm, axial: 1 cm 4.04 mm, transverse 10 cm 4.92 mm, axial: 10 cm 5.74 mm. Sensitivity: 9.6 s-1·k Bq-1, scatter fraction: 35.4%, peak NEC rate: 1.69×105 s-1. Conclusion: According to manufacturers and national standards, the results of performances testing are up to standard. It is necessary to enhance the effect of in quality control(QC) of PET/CT and the fundamentality of the performance tests, so that the devices come to the demands for clinical practice.
引文
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[8]Accorsi R,Karp JS,Surti S.Improved dose\sregimen in pediatric PET[J].J Nucl Med,2010,51(2):293-300.
[9]欧阳习,尹吉林,李小华,等.NEMA NU2-2001标准在国内PET/CT性能测试的整体应用[J].中国医疗设备,2009,24(8):28-32.
[10]Delso G,Fürst S,Jakoby B,et al.Performance\smeasurements of the siemens m MR integrated\swhole-body PET/MR Scanner[J].J Nucl Med,2011,52(12):1914-1922.
[11]段长江.浅谈PET/CT的计量检测[J].中国卫生产业,2013,10(33):194-196.
[12]王国军,张子纲,贺海荣,等.应用NEMA2001标准测试Biograph 64/True V PET/CT性能[J].中华核医学杂志,2009,29(6):421-423.
[13]王风,赵伟,张岩,等.拥有“飞行时问”技术的PET/CT性能分析[J].中国医学装备,2012,9(7):1-5.
[14]李小华,欧阳习,尹吉林,等.Siemens Biograph16HR PET/CT的NEMA标准PET性能测试[J].中国医学物理学杂志,2008,25(2):569-573.
[15]Kolb A,Wehrl HF,Hofmann M,et al.Technical\sperformance evaluation of a human brain\sPET/MRI system[J].Eur Radiol,2012,22(8):1776-1788.
[2]Molina-Duran F,Dinter D,Schoenahl F,et al.Dependence of image quality on acquisition\stime for the PET/CT Biograph m CT[J].Z Med\sPhys,2014,24(1):73-79.
[3]孟晓东,全青英,乔桦,等.西门子ECAT EXACTHR+型PET的性能测试和质量控制[J].医疗卫生装备,2008,29(7):107-108.
[4]National Electrical Manufacters Association(NEMA).Performance measurements of positron\semission tomographs[S].NEMA Publishes Standard\sNU 2,2007.
[5]中华人民共和国卫生部.GB 17589-2011X射线计算机断层摄影装置质量保证检测规范[S].中国国家标准化管理委员会,2011-12-30.
[6]Bernstine H,Sopov V,Yefremov N,et al.Comparison of 80 and 120 k Vp contrastenhanced CT for attenuation correction in PET/CT,using quantitative analysis and reporter\sassessment of PET image quality[J].Clinical\sradiology,2014,69(1):17-24.
[7]李小华,贺小红,李凡勇,等.Discovery ST PET性能测试与NEMA标准的应用[J].中华核医学杂志,2006,26(2):104-106.
[8]Accorsi R,Karp JS,Surti S.Improved dose\sregimen in pediatric PET[J].J Nucl Med,2010,51(2):293-300.
[9]欧阳习,尹吉林,李小华,等.NEMA NU2-2001标准在国内PET/CT性能测试的整体应用[J].中国医疗设备,2009,24(8):28-32.
[10]Delso G,Fürst S,Jakoby B,et al.Performance\smeasurements of the siemens m MR integrated\swhole-body PET/MR Scanner[J].J Nucl Med,2011,52(12):1914-1922.
[11]段长江.浅谈PET/CT的计量检测[J].中国卫生产业,2013,10(33):194-196.
[12]王国军,张子纲,贺海荣,等.应用NEMA2001标准测试Biograph 64/True V PET/CT性能[J].中华核医学杂志,2009,29(6):421-423.
[13]王风,赵伟,张岩,等.拥有“飞行时问”技术的PET/CT性能分析[J].中国医学装备,2012,9(7):1-5.
[14]李小华,欧阳习,尹吉林,等.Siemens Biograph16HR PET/CT的NEMA标准PET性能测试[J].中国医学物理学杂志,2008,25(2):569-573.
[15]Kolb A,Wehrl HF,Hofmann M,et al.Technical\sperformance evaluation of a human brain\sPET/MRI system[J].Eur Radiol,2012,22(8):1776-1788.