Catphan189低對比度模體,Catphan191頭部低對比度模體,Catphan低對比度模體
Catphan189主體低對比度模體和Catphan191頭部低對比度模體,Catphan低對比度模體是為MITA CT IQ任務(wù)組定義的低對比度成像評估而設(shè)計的。這些模體取代了之前的CCT183模體。

Catphan189主體低對比度模體和Catphan191頭部低對比度模體都有八個對比度桿在制造時評估在0.05％的密度或±0.5 HU的目標(biāo)值。對比度對象的對稱定位使得這些模體成為評估重建算法的強(qiáng)制選擇和評分尺度實(shí)驗(yàn)的理想選擇。

欲了解更多信息，請參閱Catphan189主體低對比度模體和Catphan191頭部低對比度模體手冊。

CCT189 LC人體模型具有以下對比度桿：

14HU對比，3mm直徑×40mm長度和15mm直徑×10mm長度
7HU對比，5mm直徑×40mm長度和15mm直徑×10mm長度
5HU對比，直徑7mm×長度40mm，直徑15mm×長度10mm
3HU對比，直徑10mm×長度40mm，直徑15mm×長度10mm

CCT191 LC人體模型具有以下對比度桿：

9HU對比，3mm直徑×40mm長度和15mm直徑×10mm長度
7HU對比，5mm直徑×40mm長度和15mm直徑×10mm長度
5HU對比，直徑7mm×長度40mm，直徑15mm×長度10mm
3HU對比，直徑10mm×長度40mm，直徑15mm×長度10mm





 The CCT189 (body)  and CCT191 (head) Low Contrast Phantoms are designed for low contrast imaging evaluations as defined by the MITA CT IQ Task Group. These phantoms replace the earlier CCT183 phantom.

Both phantoms have eight contrast rods evaluated at manufacturing to be within 0.05% density or ±0.5 HU  of target values.  The symmetric positioning of the contrast object make these phantoms ideal for conducting forced choice and rating scale experiments for evaluating reconstruction algorithms.

For further information please see the CCT189 and CCT191 MITA CT IQ Low Contrast Phantom Manual.

The CCT189 LC Body Phantom has the following contrast rods:

14HU contrast, 3mm diameter x 40mm length  and 15mm diameter x 10mm length
7HU contrast, 5mm diameter x 40mm length  and 15mm diameter x 10mm length
5HU contrast, 7mm diameter x 40mm length  and 15mm diameter x 10mm length
3HU contrast, 10mm diameter x 40mm length  and 15mm diameter x 10mm length

The CCT191 LC Body Phantom has the following contrast rods:

9HU contrast, 3mm diameter x 40mm length  and 15mm diameter x 10mm length
7HU contrast, 5mm diameter x 40mm length  and 15mm diameter x 10mm length
5HU contrast, 7mm diameter x 40mm length  and 15mm diameter x 10mm length
3HU contrast, 10mm diameter x 40mm length  and 15mm diameter x 10mm length