An automated detection method for the MCA dot sign of acute stroke in unenhanced CT [0.03%]
一种无创性卒中筛查方法
Noriyuki Takahashi,Yongbum Lee,Du-Yih Tsai et al.
Noriyuki Takahashi et al.
The hyperdense middle cerebral artery (MCA) dot sign representing a thromboembolus is one of the important computed tomography (CT) findings for acute stroke on unenhanced CT images. Our purpose in this study was to develop an automated met...
Dosimetric comparison between intensity-modulated radiotherapy and standard wedged tangential technique for whole-breast radiotherapy in Asian women with relatively small breast volumes [0.03%]
调强放疗与标准楔形挡块切线野技术在亚洲小乳房体积女性全乳放射治疗的剂量学对比研究
Kazuhiko Tsuchiya,Rumiko Kinoshita,Shinichi Shimizu et al.
Kazuhiko Tsuchiya et al.
We sought to investigate whether intensity-modulated radiotherapy (IMRT) has a dosimetric advantage compared to the standard wedged tangential technique (SWT) for whole-breast radiotherapy (WBRT) in Asian women with relatively small breast ...
Comparative Study
Radiological physics and technology. 2014 Jan;7(1):67-72. DOI:10.1007/s12194-013-0232-3 2014
Performance evaluation of a depth-of-interaction detector by use of position-sensitive PMT with a super-bialkali photocathode [0.03%]
采用超双碱阴极位置敏感型光电倍增管评价深度交互作用探测器性能
Yoshiyuki Hirano,Munetaka Nitta,Naoko Inadama et al.
Yoshiyuki Hirano et al.
Our purpose in this work was to evaluate the performance of a 4-layer depth-of-interaction (DOI) detector composed of GSO crystals by use of a position-sensitive photomultiplier tube (PMT) with a super-bialkali photocathode (SBA) by compari...
Visual assessment method of angular performance in medical liquid-crystal displays by use of the ANG test pattern: effect of ambient illuminance and effectiveness of modified scoring [0.03%]
医用液晶显示器角向性能的视觉评估方法：环境照度的影响及评分修正的效果研究
Yoichiro Ikushima,Junji Morishita,Hiroshi Akamine et al.
Yoichiro Ikushima et al.
A visual assessment method of the angular performance in medical liquid-crystal displays (LCDs) by use of the "ANG test pattern" was proposed by Badano and the International Electrotechnical Commission. Our goals were to examine the effect ...
Simulation study optimizing the number of photodetection faces for the X'tal cube PET detector with separated crystal segments [0.03%]
分离式晶体段X'tal Cube PET探测器光敏面数目优化的模拟研究
Takahiro Matsumoto,Taiga Yamaya,Eiji Yoshida et al.
Takahiro Matsumoto et al.
We are developing a novel PET detector with 3D isotropic resolution called a crystal (X'tal) cube. The X'tal cube detector consists of a crystal block all 6 surfaces of which are covered with silicon photomultipliers (SiPMs). We have develo...
GPU-based optical propagation simulator of a laser-processed crystal block for the X'tal cube PET detector [0.03%]
基于GPU的X'tal cube PET探测器激光处理晶体块光传播模拟器
Yuma Ogata,Takashi Ohnishi,Takahiro Moriya et al.
Yuma Ogata et al.
The X'tal cube is a next-generation DOI detector for PET that we are developing to offer higher resolution and higher sensitivity than is available with present detectors. It is constructed from a cubic monolithic scintillation crystal and ...
Artifacts caused by insufficient contrast medium filling during C-arm cone-beam CT scans: a phantom study [0.03%]
关于C臂锥形束CT扫描中造影剂填充不足所致伪影的体模研究
Mitsuaki Terabe,Hajime Ichikawa,Toyohiro Kato et al.
Mitsuaki Terabe et al.
We investigated artifacts due to late-arriving contrast medium (CM) during C-arm cone-beam computed tomography. We scanned a phantom filled with water or with 100, 50, or 5% v/v concentrations of CM and then virtually produced CM-delayed pr...
Computerized image-searching method for finding correct patients for misfiled chest radiographs in a PACS server by use of biological fingerprints [0.03%]
利用生物指纹在PACS服务器中查找错误文件所属正确患者的一种计算机图像搜索方法
Risa Toge,Junji Morishita,Yasuo Sasaki et al.
Risa Toge et al.
We have developed an automated image-searching method based on biological fingerprints for identifying correct patients in misfiled chest radiographs in a picture archiving and communication system (PACS) server. We used five biological fin...
Observer-independent nodule-detectability index for low-dose lung cancer screening CT: a pilot study [0.03%]
基于低剂量肺癌筛查CT的观察者无关结节检出指数：一项初步研究
Masaki Ohkubo,Shinichi Wada,Satoshi Kanai et al.
Masaki Ohkubo et al.
For the wide dissemination of lung cancer screening by low-dose computed tomography (CT), it is important to determine the optimal conditions for scan and image reconstruction based on objective standards of evaluation. Our aim in this stud...
Effect of readout direction in the edge profile on the modulation transfer function of computed radiographic systems by use of the edge method [0.03%]
边缘方向对计算射线照相系统调制传递函数的效应
Nobukazu Tanaka,Junji Morishita,Norisato Tsuda et al.
Nobukazu Tanaka et al.
We investigated the effect of the readout direction of the edge profile obtained by the edge method on the presampled modulation transfer function (MTF) in various computed radiographic (CR) systems. There were no differences in the MTFs de...