Durko Heather L, Barrett Harrison H, Furenlid Lars R
Department of Medical Imaging, Center for Gamma-Ray Imaging, University of Arizona, Tucson, AZ 85724 USA, and the College of Optical Sciences, University of Arizona, Tucson, AZ 85721 USA.
IEEE Trans Nucl Sci. 2014 Jun;61(3):1126-1135. doi: 10.1109/TNS.2014.2304853.
We have developed a gamma-ray imaging system that combines a high-resolution silicon detector with two sets of movable, half-keel-edged copper-tungsten blades configured as crossed slits. These apertures can be positioned independently between the object and detector, producing an anamorphic image in which the axial and transaxial magnifications are not constrained to be equal. The detector is a 60 mm × 60 mm, one-millimeter-thick, one-megapixel silicon double-sided strip detector with a strip pitch of 59 m. The flexible nature of this system allows the application of adaptive imaging techniques. We present system details; calibration, acquisition, and reconstruction methods; and imaging results.
我们开发了一种伽马射线成像系统，该系统将高分辨率硅探测器与两组配置成交叉狭缝的可移动半龙骨边缘铜钨叶片相结合。这些孔径可以独立地位于物体和探测器之间，产生一种变形图像，其中轴向和横向放大倍数不受限于相等。探测器是一个60毫米×60毫米、厚1毫米、100万像素的硅双面条形探测器，条间距为59微米。该系统的灵活性允许应用自适应成像技术。我们展示了系统细节、校准、采集和重建方法以及成像结果。
