NEMA PET Scatter Phantom™是根據(jù)美國(guó)國(guó)家電氣制造商協(xié)會(huì)（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(cè)量*

使用NEMA 2007標(biāo)準(zhǔn)（NU 2-2007）進(jìn)行驗(yàn)收測(cè)試
確定成像系統(tǒng)對(duì)散射輻射的相對(duì)敏感度
測(cè)量死區(qū)時(shí)間的影響以及線源不同活動(dòng)等級(jí)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(cè)量，NEMA標(biāo)準(zhǔn)出版號(hào)NU2，美國(guó)國(guó)家電氣制造商協(xié)會(huì)（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(duì)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(zhǎng)度： 70厘米
孔尺寸： 6.4 mm
偏移距離： 4.5厘米
線源插入：長(zhǎng)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(cè)試
確定影像系統(tǒng)對(duì)散射輻射的相對(duì)靈敏度度
測(cè)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