NEMA PET Scatter Phantom,NEMA PET散射模體詳細(xì)介紹:
NEMA PET Scatter Phantom™是根據(jù)美國國家電氣制造商協(xié)會(NEMA)的建議設(shè)計(jì)的,用于在存在散射*的情況下標(biāo)準(zhǔn)化閃爍相機(jī)的計(jì)數(shù)率性能測量*
使用NEMA 2007標(biāo)準(zhǔn)(NU 2-2007)進(jìn)行驗(yàn)收測試
確定成像系統(tǒng)對散射輻射的相對敏感度
測量死區(qū)時(shí)間的影響以及線源不同活動(dòng)等級產(chǎn)生的隨機(jī)事件的影響
*正電子發(fā)射斷層掃描儀的性能測量,NEMA標(biāo)準(zhǔn)出版號NU2,美國國家電氣制造商協(xié)會(NEMA),華盛頓特區(qū) - 2001年
NEMA PET Scatter Phantom,NEMA PET散射模體產(chǎn)品規(guī)格
在散射的情況下對閃爍相機(jī)的計(jì)數(shù)率性能進(jìn)行標(biāo)準(zhǔn)化*
是一個(gè)堅(jiān)實(shí)的正圓高密度聚乙烯圓筒
平行于圓柱體中心軸線的可填充線源支架偏移距離為4.5厘米
氣缸由四個(gè)部分組成,便于攜帶/存放
外徑: 203厘米
長度: 70厘米
孔尺寸: 6.4 mm
偏移距離: 4.5厘米
線源插入:長度:80厘米; 內(nèi)徑:3.2mm; 外徑:5mm
NEMA PET Scatter Phantom,NEMA PET散射模體主要應(yīng)用:
NEMA標(biāo)準(zhǔn)驗(yàn)收測試
確定影像系統(tǒng)對散射輻射的相對靈敏度度
測量線源在不同活度水平下產(chǎn)生的死時(shí)間影響和隨機(jī)事件影響
NEMA Scatter Phantom SET Model ECT/NEM-SC/P
Main Features:
The NEMA Scatter Phantom Set is designed in accordance with the recommendations by the National Electrical manufacturers Association
(NEMA) to standardize the measurement of count rate performance of a scintillation camera in the presence of scatter*
Is a solid right circular high density polyethylene cylinder
Has a fillable line source holder parallel to the center axis of the cylinder and offset a distance
O. D. 4.5 cm
The cylinder is made of four sections for ease of carrying/storage
Main Applications:
Acceptance testing with NEMA standard
Determine the imaging systems relative sensitivity to scatter radiation
Measure the effects of dead-time and the effects of random events generated at different levels of activity of the line source
Specifications:
Outside diameter: 203 cm Length: 70 cm
Hole size: 6.4 mm Offset distance: 4.5 cm Line source insert: Length: 80 cm
I.D.: 3.2 mm
C.D.: 5 mm