CIRS 011A乳腺模體，CIRS 011A乳腺X射線組織等效模體詳細(xì)介紹：
CIRS 011A乳腺模體，CIRS 011A乳腺X射線組織等效模體描述
CIRS 011A乳腺模體，CIRS 011A乳腺X射線組織等效模體是美國癌癥學(xué)會(huì)和放射學(xué)院推薦乳腺機(jī)成像質(zhì)量評(píng)價(jià)模型
為今天的先進(jìn)成像系統(tǒng)提供了一個(gè)精致的質(zhì)量保證工具。
CIRS 011A乳腺模體經(jīng)過驗(yàn)證的模擬技術(shù)可以使組織等效，逼真的模型用于乳腺攝影質(zhì)量保證。
樹脂材料模仿一系列乳房組織的光子衰減系數(shù)。被模仿的人乳房的平均元素組成是基于Hammerstein報(bào)道的脂肪和腺體組織的單個(gè)元素組成。
衰減系數(shù)通過使用JHHubbell的“混合規(guī)則”和光子質(zhì)量衰減和能量吸收系數(shù)表來計(jì)算。
CIRS 011A乳腺模體包含旨在測(cè)試新一代乳房X光機(jī)的閾值的目標(biāo)。4.5厘米厚，并模擬平均腺體組織成分。
旨在測(cè)試任何乳房X線照相系統(tǒng)的性能。模型中的物體模擬鈣化，導(dǎo)管和腫瘤塊中的纖維性鈣化。在體模范圍內(nèi)測(cè)試物體的范圍應(yīng)該從任何系統(tǒng)上應(yīng)該可見的物體到最好的乳腺攝影系統(tǒng)上難以解決的物體。
CIRS 011A乳腺模體，CIRS 011A乳腺X射線組織等效模體技術(shù)參數(shù)：
1. 線對(duì)細(xì)節(jié) 1) 20 lp/mm 2組 水平方向與垂直方向布局
2. 碳酸鈣病灶點(diǎn) 2) 0.13 3)0.165 4)0.196 5)0.23 6)0.275 7)0.4 8)0.23 9)0.196 10)0.165 11)0.23 12)0.196 13)0.165
3. 階梯楔形塊(1cm) 14)100%腺體組織 15)70%腺體組織 16) 50%腺體組織 17) 30%腺體組織 18)100%脂肪組織
4. 尼龍纖維 19)1.25mm 20)0.83mm 21)0.71mm 22)0.53mm 23)0.3mm
5. 半球形團(tuán)塊(75%腺體,25%脂肪) 24)厚度4.76mm 25) 厚度3.16mm 26)厚度2.38mm 27)厚度1.98mm 28)厚度1.59mm 29)厚度1.19mm 30)厚度0.9mm
6. 光密度 31)參照區(qū)
7. 線束邊界 32)定位細(xì)節(jié)
DESCRTPTION
A Refined Quality Assurance Tool for Today's Advanced Imaging Systems.
Proven simulation technology enables the use of tissue-equivalent, realistically-shaped phantoms for mammographic quality assurance.
Resin material mimics the photon attenuation coefficients of a range of breast tissues. Average elemental composition of the human breast being mimicked is based on the individual elemental composition of adipose and glandular tissue reported by Hammerstein.
Attenuation coefficients are calculated by using the "mixture rule" and the Photon Mass Attenuation and Energy Absorption Coefficient Table of J.H. Hubbell.
Contains targets that are engineered to test the threshold of the new generation of mammography machines. 4.5 cm thick and simulates an average glandular tissue composition.
Designed to test the performance of any mammographic system. Objects within the phantom simulate calcifications, fibrous calcifications in ducts and tumor masses. Test objects within the phantom range in size from those that should be visible on any system to objects that will be difficult to resolve on the best mammographic systems.
