Performance of a PSPMT based detector for scintimammography.
Performance of a PSPMT based detector for scintimammography.
复制标题
基于 PSPMT 的闪烁放射成像探测器的性能。
DOI：
10.1088/0031-9155/45/3/315
复制
发表时间：
2000
影响因子：
3.5
通讯作者：
Wojcik,R
中科院分区：
文献类型：
--
作者：
Williams,MB;Williams,MB;Goode,AR;Galbis-Reig,V;Majewski,S;Weisenberger,AG;Wojcik,R
在乳腺X线摄影中，相对于较大的传统相机，具有高内在空间分辨率和小的非活动外围的紧凑型探测器可以提供小病变的外在空间分辨率、效率和对比度的改善。我们正在研制一种用于乳腺造影的像素化小视场γ照相机。对原型系统的成像性能进行了广泛的测量，包括空间分辨率、灵敏度、响应均匀性、几何线性和能量分辨率。在病变可检测性的定性研究中，使用了一种提供真实乳房出口伽马能谱的拟人躯干体模。一种新型的乳腺成像系统，结合scintimammography和数字乳腺摄影在一个单一的直立单位也已开发。该系统提供了乳腺X线摄影和数字乳腺X线摄影之间的自动配准，以单一配置获得乳房。
In breast scintigraphy, compact detectors with high intrinsic spatial resolution and small inactive peripheries can provide improvements in extrinsic spatial resolution, efficiency and contrast for small lesions relative to larger conventional cameras. We are developing a pixelated small field-of-view gamma camera for scintimammography. Extensive measurements of the imaging properties of a prototype system have been made, including spatial resolution, sensitivity, uniformity of response, geometric linearity and energy resolution. An anthropomorphic torso phantom providing a realistic breast exit gamma spectrum has been used in a qualitative study of lesion detectability. A new type of breast imaging system that combines scintimammography and digital mammography in a single upright unit has also been developed. The system provides automatic co-registration between the scintigram and the digital mammogram, obtained with the breast in a single configuration.