QRM-Cranial-CT-Phantom，顱腦CT模型， Cranial CT Phantom基于具有不同 kV 設(shè)置的恒定 CT 值的軟組織等效塑料和具有類(lèi)似于人類(lèi)頭骨的 X 射線吸收的周?chē)趋澜Y(jié)構(gòu)，人類(lèi)大腦的兩個(gè)不同部分可用。

一節(jié)描述了具有與顳骨相同的均勻軟組織和骨結(jié)構(gòu)的顱底。本部分適用于演示和評(píng)估顱底的圖像質(zhì)量，特別是受光束硬化效應(yīng)、部分體積效應(yīng)和掃描儀不穩(wěn)定引起的偽影（例如陽(yáng)極擺動(dòng)）的影響。

第二部分旨在測(cè)試成像系統(tǒng)的低對(duì)比度能力。在均勻的軟組織內(nèi)，幾個(gè)低對(duì)比度結(jié)構(gòu)模擬了大腦的典型皮層結(jié)構(gòu)和中央低對(duì)比度結(jié)構(gòu)。

QRM-Cranial-CT-Phantom，顱腦CT模型， Cranial CT Phantom技術(shù)參數(shù)：

尺寸：180 毫米 x 140 毫米 x 85 毫米
組織材料：

The cranial phantom mimics the 

human brain anatomy for CT imaging.

Based on a soft tissue equivalent plastic with a constant CT-number for the different kV settings and a surrounding bone structure with an X-ray absorption similar to the human skull, two different section of the human brain are realized.

One section describes the base of the skull with uniform soft tissue and bony structures equivalent to the temporal bones. This section is suitable to demonstrate and evaluate the image quality in the base of the skull, especially affected by beam hardening effects, partial volume effects and artifacts caused by scanner instabilities, e.g. anode wobble.

The second section was designed to test the low contrast capabilities of the imaging system. Within the uniform soft tissue several low contrast structure simulating typical cortex structures and central low contrast structures of the brain.