Malik Azhar H, Shimazoe Kenji, Takahashi Hiroyuki
Annu Int Conf IEEE Eng Med Biol Soc. 2013;2013:5147-50. doi: 10.1109/EMBC.2013.6610707.
Ce(+3): Gd3Al2Ga3O12 (Ce:GAGG) is expected to be promising scintillator for PET, SPECT, and gamma camera applications because of its attractive properties. We designed a Compton camera based on Ce:GAGG, both as scatterer and absorber, for imaging and radioactivity measurement of point sources. The two important parameters sensitivity and spatial resolution are determined for 4 × 4 pixels, each pixel of size 1 × 1 cm(2), for both scatterer and absorber. Our main focus in this paper is to image a distant source for which sensitivity is of prime importance. High sensitivity and light weight are two important advantages of Compton camera for distant source imaging and the availability of Ce:GAGG 3 × 3 mm(2) pixel size is expected to give a spatial resolution of ~ 5 mm for medical applications as well.
铈（+3）：钆铝镓石榴石（Ce:GAGG）因其具有吸引人的特性，有望成为用于正电子发射断层扫描（PET）、单光子发射计算机断层扫描（SPECT）和伽马相机应用的有前景的闪烁体。我们设计了一种基于Ce:GAGG的康普顿相机，它同时作为散射体和吸收体，用于点源的成像和放射性测量。对于4×4像素，每个像素尺寸为1×1平方厘米，分别针对散射体和吸收体确定了两个重要参数——灵敏度和空间分辨率。本文我们主要关注的是对远处源进行成像，对于此，灵敏度至关重要。高灵敏度和轻重量是康普顿相机用于远处源成像的两个重要优势，并且Ce:GAGG 3×3平方毫米像素尺寸的可用性预计在医学应用中也能给出约5毫米的空间分辨率。
