1) pinhole collimator
针孔准直器
1.
Monte Carlo simulations of a MicroSPECT pinhole collimator;
基于Monte Carlo模拟设计MicroSPECT针孔准直器
2.
In order to minimize the penetration and scattering effect of gamma ray on the pinhole collimator,Monte-Carlo simulation was utilized to optimize the designs of pinhole collimator for a single photon emission computed tomography(SPECT) system.
为了最大限度地减少γ射线在针孔准直器上的透射和散射效应,采用蒙特卡罗方法对单光子发射计算机断层(SPECT)成像系统使用的针孔准直器进行优化。
2) multi-pinhole collimator
多针孔准直器
1.
The efficiency of single-pinhole and multi-pinhole collimator is compared based on a imaging geometric model.
在成像几何模型的基础上,通过分析和计算,研究了多针孔准直器与单针孔准直器对探测效率的影响。
3) coded-pinhole collimator
编码针孔准直器
1.
The coded-pinhole collimator and CdZnTe mosaic detector are employed to procure higher energy resolution, spatial resolution and detection efficiency.
为了得到高的能量分辨率、空间分辨率和探测效率,采用了编码针孔准直器和拼嵌式CdZnTe半导体探测器。
4) parallel-hole collimator
平行孔准直器
1.
Methods: By using a perfect parallel-hole collimator model and a collimator model considering the splayed angle effect,this paper proposed a novel method which considers the space response function(SRF) calculating the system matrix and uses an improved Ray Tracing algorithm to perform attenuation correction.
目的:改进平行孔准直器SPECT系统的成像方法,快速、精确地实现有序子集期望值最大化(OSEM)重建算法。
6) Collimating eyelet
准直小孔法
补充资料：针孔摄影
针孔摄影(Pin-hole photography)，不使用照相镜头，依靠针孔来成象的摄影。只要将针孔与胶片面的距离加大，像也相应变大，而射入的光量减少，需使曝光时间延长，故使用高感胶片较好，特点是影象不呈畸变状。倘用TTL摄影机，还容易确定曝光。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条