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Computerized Imaging Reference Systems, Incorporated (CIRS) 公司在1983年以改進(jìn)現(xiàn)有組織模擬方法和計(jì)算機(jī)斷層掃描提供定量的參考標(biāo)準(zhǔn)為目標(biāo)成立了。如今，CIRS被認(rèn)為是全球領(lǐng)先的等效幻影，放療，醫(yī)學(xué)成像模擬器以及程序培訓(xùn)...[查看更多]
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 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.
Features:
?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
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