Catphan189低对比度模体,Catphan191头部低对比度模体,Catphan低对比度模体

Catphan189低对比度模体,Catphan191头部低对比度模体,Catphan低对比度模体
Catphan189主体低对比度模体和Catphan191头部低对比度模体,Catphan低对比度模体是为MITA CT IQ任务组定义的低对比度成像评估而设计的。这些模体取代了之前的CCT183模体。

Catphan189主体低对比度模体和Catphan191头部低对比度模体都有八个对比度杆在制造时评估在0.05％的密度或±0.5 HU的目标值。对比度对象的对称定位使得这些模体成为评估重建算法的强制选择和评分尺度实验的理想选择。

欲了解更多信息，请参阅Catphan189主体低对比度模体和Catphan191头部低对比度模体手册。

CCT189 LC人体模型具有以下对比度杆：

14HU对比，3mm直径×40mm长度和15mm直径×10mm长度
7HU对比，5mm直径×40mm长度和15mm直径×10mm长度
5HU对比，直径7mm×长度40mm，直径15mm×长度10mm
3HU对比，直径10mm×长度40mm，直径15mm×长度10mm

CCT191 LC人体模型具有以下对比度杆：

9HU对比，3mm直径×40mm长度和15mm直径×10mm长度
7HU对比，5mm直径×40mm长度和15mm直径×10mm长度
5HU对比，直径7mm×长度40mm，直径15mm×长度10mm
3HU对比，直径10mm×长度40mm，直径15mm×长度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