Quantitative analysis of hepatic fat fraction by single-breath-holding MR spectroscopy with T₂ correction: phantom and clinical study with histologic assessment [0.03%]
使用T2校正单屏呼吸MR光谱学进行肝脂肪质子密度容积分数定量分析：基于组织学评估的体模和临床研究
Norio Hayashi,Tosiaki Miyati,Takashi Minami et al.
Norio Hayashi et al.
The focus of this study was on the investigation of the accuracy of the fat fraction of the liver by use of single-breath-holding magnetic resonance spectroscopy (MRS) with T (2) correction. Single-voxel proton MRS was performed with severa...
Dosimetric properties and clinical application of an a-Si EPID for dynamic IMRT quality assurance [0.03%]
动态IMRT质量保证的a-Si电子伙伴成像检测器的剂量计量属性及临床应用研究
Kenji Matsumoto,Masahiko Okumura,Yoshiyuki Asai et al.
Kenji Matsumoto et al.
Dosimetric properties of an amorphous silicon electronic portal imaging device (EPID) for verification of intensity-modulated radiation therapy (IMRT) were investigated as a replacement for conventional verification tools. The portal dosime...
Automated adjustment of display conditions in brain MR images: diffusion-weighted MRIs and apparent diffusion coefficient maps for hyperacute ischemic stroke [0.03%]
脑磁共振图像的显示条件自动调整：超急性期缺血性卒中患者的扩散加权和表观扩散系数图优化
Hiroyuki Nagashima,Kunio Doi,Toshihiro Ogura et al.
Hiroyuki Nagashima et al.
We developed a new computerized scheme for proper display of brain diffusion-weighted magnetic resonance images (DWIs) and apparent diffusion coefficient (ADC) maps based on density histogram analysis. In our scheme, DWI volumes and b0 imag...
Diagrams for the Leksell Gamma Knife 4C automatic positioning system accessible shot coordinates [0.03%]
Leksell伽玛刀4C自动定位系统的可照射坐标图
Yoichi Watanabe
Yoichi Watanabe
We have developed a graphic representation (APS shot-range diagrams) of achievable shot coordinates with the automatic positioning system (APS) for Gamma Knife stereotactic radiosurgery. We formulated a mathematical relationship between the...
Monte Carlo-based energy response studies of diode dosimeters in radiotherapy photon beams [0.03%]
基于蒙特卡洛的二极管剂量计在放射治疗光子束中的能量响应研究
C Arun,T Palani Selvam,Verma Dinkar et al.
C Arun et al.
This study presents Monte Carlo-calculated absolute and normalized (relative to a (60)Co beam) sensitivity values of silicon diode dosimeters for a variety of commercially available silicon diode dosimeters for radiotherapy photon beams in ...
First test on three stitching methods with digital detectors used in radiography [0.03%]
数字探测器在射线检测中三种拼接方法的初步试验研究
Sarah Bassi,Stefano Baldini,Ciro Rebuffat et al.
Sarah Bassi et al.
In medical radiography, a large area of the human body sometimes needs to be investigated by means of X-ray examinations, for example, the lower spine. With computed radiography (CR) cassettes, due to their large surface area, it is possibl...
A simple method for accurate liver volume estimation by use of curve-fitting: a pilot study [0.03%]
一种用于肝体积估算的曲线拟合法及其初步研究
Masahito Aoyama,Yoshiharu Nakayama,Kazuo Awai et al.
Masahito Aoyama et al.
In this paper, we describe the effectiveness of our curve-fitting method by comparing liver volumes estimated by our new technique to volumes obtained with the standard manual contour-tracing method. Hepatic parenchymal-phase images of 13 p...
Basic imaging properties of an indirect flat-panel detector system employing irradiation side sampling (ISS) technology for chest radiography: comparison with a computed radiographic system [0.03%]
采用射线照射侧取样的间接平板探测器系统的胸部X射线摄影成像特性研究：与CR系统的比较
Nobukazu Tanaka,Yuki Yano,Hidetake Yabuuchi et al.
Nobukazu Tanaka et al.
The image quality and potential usefulness for patient skin-dose reduction of a newly developed flat-panel detector (FPD) system employing irradiation side sampling (ISS) were investigated and compared to a conventional computed radiography...
Comparative Study
Radiological physics and technology. 2013 Jan;6(1):162-9. DOI:10.1007/s12194-012-0184-z 2013
Robust 2D/3D registration for fast-flexion motion of the knee joint using hybrid optimization [0.03%]
基于混合优化的膝关节屈曲运动的鲁棒二维/三维配准方法
Takashi Ohnishi,Masahiko Suzuki,Tatsuya Kobayashi et al.
Takashi Ohnishi et al.
Previously, we proposed a 2D/3D registration method that uses Powell's algorithm to obtain 3D motion of a knee joint by 3D computed-tomography and bi-plane fluoroscopic images. The 2D/3D registration is performed consecutively and automatic...