美國核科技BOMAB全身計數(shù)器計量模體，BOMAB模體詳細(xì)介紹：
BOMAB是BOttle Manikin ABsorber的縮寫詞，也稱為Bottle Absorber Manikin。這些BOMAB模型旨在盡可能模仿人體組織，以便校準(zhǔn)全身計數(shù)器。可以使用BOMAB模型執(zhí)行許多測試，并且全身計數(shù)設(shè)施的測試協(xié)議每年都不同。
我們的瓶子人體模型吸收器（BOMAB）Phantom（Cat。＃NTSBMP01）提供了一個功能模擬，用于在站立或坐姿的成人人體中散射輻射。它高170厘米。模體的應(yīng)用包括實際幾何校準(zhǔn)，性能測量和全身計數(shù)器的質(zhì)量控制測試，其用于內(nèi)部沉積的放射性核素的體內(nèi)生物測定。BOMAB體模在核醫(yī)學(xué)的X射線治療技術(shù)中也很有用。
BOMAB模體由十個不同形狀（圓形和橢圓形）的圓柱體組成，尺寸共同構(gòu)成普通人。高密度聚乙烯，約4.76毫米厚，用于體模的所有部分，因為它被認(rèn)為在裂變和激活體負(fù)荷監(jiān)測中通常遇到的光子能量范圍內(nèi)具有足夠的組織等效性。每個氣缸都裝有一個50毫米防漏凹陷加油口蓋，安裝在每個氣缸的末端。蓋子完全關(guān)閉時 與表面齊平以允許圓柱體堆疊。整體尺寸的設(shè)計符合ICRP 23中描述的參考人的要求。公差保持在+/- 10％之內(nèi)。
NTS BOMAB Phantom Dimensions，按以下順序給出：
數(shù)量______形狀__________橫截面____________垂直高度（cm）____填充量（ml）
頭1 ...........橢圓......................... 19 x 14 ........ ............................... .. 20 ................ ...................... 3500
頸部1 .............圈........................ 13 dia ........ ................................... 10 .............. ....................... 998
Thorax 1 .......... Ellipse ....................... 30 x 20 ........... .............................. 40 ................... .............17000
Lumbar 1 ......... Ellipse ........................ 36 x 20 ........... .............................. 20 ................... ..............9990
大腿2 ...........圈......................... 16 dia ......... ................................... 40 .............. ........................6130
腿2 ..............圈......................... 13 dia ...... ..................................... 40 ............ ..........................3660
武器2 .............圈......................... 10.5直徑....... ................................. 60 ................ ...................... 3724
Table 1. BOMAB Dimensions
|
|
|
Shape
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Cross Section (cm)
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Vertical Height (cm)
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Fill
Volume (cm3)
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|
Head
|
Elipsoid
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19 x 14
|
20
|
3525
|
|
Neck
|
Cylinder
|
13 (diam)
|
10
|
1030
|
|
Upper Torso
|
Elipsoid
|
30 x 20
|
40
|
16970
|
|
Lower Torso
|
Elipsoid
|
36 x 20
|
20
|
9990
|
|
Thighs (2x)
|
Cylinder
|
15 (diam)
|
40
|
12100
|
|
Lower Legs (2x)
|
Cylinder
|
12 (diam)
|
40
|
7490
|
|
Arms (2x)
|
Cylinder
|
20 (diam)
|
60
|
7600
|
The BOttle Manikin ABsorption (BOMAB) Phantom is used to calibrate whole body counters.
The seamless BOMAB consists of ten bottles with dimensions as given in Table 1. The seamless BOMAB is composed of polyethylene plastic and constructed without seams in any of the ten bottles.
The volumes of the manufactured version are within 20% of the values specified in Table 1 for cylindrical parts. The total volume of manufactured phantoms tend to have an overall tolerance of 10%.
Each bottle has a recessed screw-type fill port. The screw cap is provided with each bottle and is leak proof when securely tightened.
