Usefulness of presentation of similar images in the diagnosis of breast masses on mammograms: comparison of observer performances in Japan and the USA [0.03%]
乳腺X线摄影中呈现相似影像对肿块诊断的益处：日本和美国观察者表现比较
Chisako Muramatsu,Robert A Schmidt,Junji Shiraishi et al.
Chisako Muramatsu et al.
Computer-aided diagnosis has potential in improving radiologists' diagnosis, and presentation of similar images as a reference may provide additional useful information for distinction between benign and malignant lesions. In this study, we...
Comparative Study
Radiological physics and technology. 2013 Jan;6(1):70-7. DOI:10.1007/s12194-012-0171-4 2013
Investigation of optimum anti-scatter grid selection for digital radiography: physical imaging properties and detectability of low-contrast signals [0.03%]
数字放射成像物理图像性质和低对比度信号可检测性的最佳散射栅选择研究
Nobukazu Tanaka,Kentaro Naka,Aya Saito et al.
Nobukazu Tanaka et al.
Our aim in this study was to evaluate the effect of the grid variations on the imaging performance for a computed radiographic system under identical exposure condition. Digital radiographies using a 20-cm Lucite phantom were performed with...
Evaluation of renal blood flow using multi-phase echo-planar magnetic resonance imaging and signal targeting with alternating radiofrequency (EPISTAR) in 3-T magnetic resonance imaging [0.03%]
应用三维磁共振回波平面交替射频信号靶向成像评价肾血流灌注
Hiroyuki Sugimori,Mitsuhiro Nakanishi,Noriyuki Fujima et al.
Hiroyuki Sugimori et al.
Most arterial spin labeling techniques apply the constant post-labeling delay time after the blood-labeling time point on the target artery. As the hemodynamic status cannot be estimated in each patient, quantitative values of the blood flo...
Comparison of the cost-effectiveness of stress myocardial perfusion MRI and SPECT in patients with suspected coronary artery disease [0.03%]
疑似冠心病患者应行心肌灌注磁共振成像还是单光子发射计算机断层扫描检查——成本效益分析研究
Kunihiro Iwata,Katsuhiko Ogasawara
Kunihiro Iwata
Our aim in this study was to perform a cost-effectiveness analysis (CEA) to compare myocardial perfusion magnetic resonance imaging (p-MRI) and single photon emission computed tomography (SPECT) in the Japanese setting. The CEA of p-MRI and...
Comparative Study
Radiological physics and technology. 2013 Jan;6(1):28-34. DOI:10.1007/s12194-012-0165-2 2013
Quantitative performance of advanced resolution recovery strategies on SPECT images: evaluation with use of digital phantom models [0.03%]
基于数字体模的SPECT图像先进分辨率恢复策略的定量性能评估
Hideo Onishi,Nobutoku Motomura,Koichi Fujino et al.
Hideo Onishi et al.
Several resolution recovery (RR) methods have been developed. This study was aimed to validate the following performance of the advanced RR methods: Evolution, Astonish, Flash3D, and 3D-OSEM. We compared the advanced RR method with filtered...
Intrinsic spatial resolution evaluation of the X'tal cube PET detector based on a 3D crystal block segmented by laser processing [0.03%]
基于激光加工的三维晶块的X'tal cube PET探测器的固有空间分辨率评估
Eiji Yoshida,Hideaki Tashima,Naoko Inadama et al.
Eiji Yoshida et al.
The X'tal cube is a depth-of-interaction (DOI)-PET detector which is aimed at obtaining isotropic resolution by effective readout of scintillation photons from the six sides of a crystal block. The X'tal cube is composed of the 3D crystal b...
Basic concepts and development of an all-purpose computer interface for ROC/FROC observer study [0.03%]
一种适用于ROC/SROC研究的通用型计算机界面的基本概念和发展
Junji Shiraishi,Daisuke Fukuoka,Takeshi Hara et al.
Junji Shiraishi et al.
In this study, we initially investigated various aspects of requirements for a computer interface employed in receiver operating characteristic (ROC) and free-response ROC (FROC) observer studies which involve digital images and ratings obt...
Comparison of total MU and segment areas in VMAT and step-and-shoot IMRT plans [0.03%]
容积旋转调强(VMAT)与分段式固定强度调强(IMRT)计划中总MU及子射野面积的比较分析
Motohiro Kawashima,Shuichi Ozawa,Akihiro Haga et al.
Motohiro Kawashima et al.
We compared treatment plans for volumetric intensity-modulated arc therapy (VMAT) and step-and-shoot intensity-modulated radiation therapy (IMRT) in terms of their monitor unit (MU) and segment area at each control point to investigate the ...
Comparative Study
Radiological physics and technology. 2013 Jan;6(1):14-20. DOI:10.1007/s12194-012-0164-3 2013
Visualization of mouse spinal cord microscopic structures by use of ex vivo quantitative micro-CT images [0.03%]
基于离体小鼠脊髓显微结构的定量微型CT图像可视化研究
Shigeyoshi Saito,Kenya Murase
Shigeyoshi Saito
Histologic methods are destructive and provide only two-dimensional images, whereas three-dimensional information is difficult to obtain. Simple and noninvasive techniques to make up for the shortcomings of histologic experiments are needed...
Optimization of 3D-variable refocusing flip angle RARE imaging for high-resolution volumetric black-blood angiography [0.03%]
三维变翻转角RARE序列优化的高分辨率无对比剂黑血血管壁成像研究
Masami Yoneyama,Masanobu Nakamura,Takashi Tabuchi et al.
Masami Yoneyama et al.
3D rapid acquisition with relaxation enhancement or turbo spin-echo sequence is promising for black-blood angiography. In this paper, we propose a new scheme of sequence parameter optimization for "flow-void enhanced" volumetric black-blood...