CIRS 012A乳腺模体，CIRS 012A乳腺X射线组织等效模体描述
CIRS 012A乳腺模体包括4,5和6厘米厚的组织等效模型。每个幻影包含相同的嵌入细节（见地图011A）。每个模体的腺体含量分别为50％，30％和20％。还包括phototimer补偿板，使厚度范围从0.5厘米至7厘米，腺体含量为30％，50％和70％。
一个补偿板包含用于评估图像质量的嵌入细节。包括一个重型泡沫内衬手提箱。
CIRS树脂材料模仿一系列乳房组织的光子衰减系数。被模仿的人乳房的平均元素组成基于Hammerstein报道的脂肪和腺体组织的单个元素组成。
衰减系数通过使用JHHubbell的“混合规则”和光子质量衰减和能量吸收系数表来计算。
CIRS 012A乳腺模体产品特点：
在不同程度的厚度和腺体情况下评估图像质量
为辐射剂量提供准确可靠的测试
确保一致的诊断有用图像的生产
The CIRS mammography research set includes tissue equivalent phantoms 4, 5 and 6 cm thick. Each phantom contains identical embedded details (see map 011A). The glandular content of each phantom is 50%, 30%, and 20% respectively. Also included are phototimer compensation plates enabling a range of thickness from 0.5 cm to 7 cm with a glandular content of 30%, 50% and 70%.
One compensation plate contains embedded details for evaluation of image quality. A heavy duty foam lined carrying case are included.
CIRS resin material mimics the photon attenuation coefficients of a range of breast tissues. Average elemental composition of the human breast being mimicked is based in the inpidual 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.
Enable evaluation of image quality under varying degrees of thickness and glandularity
Provides accurate reliable test for radiation dose
Ensures consistent production of diagnostically useful images
