Ryujiro Yokoyama

According to our database, Ryujiro Yokoyama authored at least 31 papers between 2003 and 2016.

Collaborative distances:

• Dijkstra number of five.
• Erdős number of four.

2016

Automatic quantification of mammary glands on non-contrast x-ray CT by using a novel segmentation approach.

Xiangrong Zhou, Takuya Kano, Yunliang Cai, Shuo Li, Xinxin Zhou, Takeshi Hara, Ryujiro Yokoyama, Hiroshi Fujita

Proceedings of the Medical Imaging 2016: Computer-Aided Diagnosis, San Diego, 2016

2015

Automatic anatomy partitioning of the torso region on CT images by using multiple organ localizations with a group-wise calibration technique.

Xiangrong Zhou, Syoichi Morita, Xinxin Zhou, Huayue Chen, Takeshi Hara, Ryujiro Yokoyama, Masayuki Kanematsu, Hiroaki Hoshi, Hiroshi Fujita

Proceedings of the Medical Imaging 2015: Computer-Aided Diagnosis, 2015

2014

A universal approach for automatic organ segmentations on 3D CT images based on organ localization and 3D GrabCut.

Xiangrong Zhou, Takaaki Ito, Xinxin Zhou, Huayue Chen, Takeshi Hara, Ryujiro Yokoyama, Masayuki Kanematsu, Hiroaki Hoshi, Hiroshi Fujita

Proceedings of the Medical Imaging 2014: Computer-Aided Diagnosis, San Diego, 2014

2013

Automatic organ localizations on 3D CT images by using majority-voting of multiple 2D detections based on local binary patterns and Haar-like features.

Xiangrong Zhou, Shoutarou Yamaguchi, Xinxin Zhou, Huayue Chen, Takeshi Hara, Ryujiro Yokoyama, Masayuki Kanematsu, Hiroshi Fujita

Proceedings of the Medical Imaging 2013: Computer-Aided Diagnosis, 2013

Pulmonary emphysema classification based on an improved texton learning model by sparse representation.

Min Zhang, Xiangrong Zhou, Satoshi Goshima, Huayue Chen, Chisako Muramatsu, Takeshi Hara, Ryujiro Yokoyama, Masayuki Kanematsu, Hiroshi Fujita

Proceedings of the Medical Imaging 2013: Computer-Aided Diagnosis, 2013

2012

Automatic localization of solid organs on 3D CT images by a collaborative majority voting decision based on ensemble learning.

Xiangrong Zhou, Song Wang, Huayue Chen, Takeshi Hara, Ryujiro Yokoyama, Masayuki Kanematsu, Hiroshi Fujita

Comput. Medical Imaging Graph., 2012

Automatic organ segmentation on torso CT images by using content-based image retrieval.

Xiangrong Zhou, Atsuto Watanabe, Xinxin Zhou, Takeshi Hara, Ryujiro Yokoyama, Masayuki Kanematsu, Hiroshi Fujita

Proceedings of the Medical Imaging 2012: Image Processing, 2012

An application to pulmonary emphysema classification based on model of texton learning by sparse representation.

Min Zhang, Xiangrong Zhou, Satoshi Goshima, Huayue Chen, Chisako Muramatsu, Takeshi Hara, Ryujiro Yokoyama, Masayuki Kanematsu, Hiroshi Fujita

Proceedings of the Medical Imaging 2012: Computer-Aided Diagnosis, San Diego, 2012

2011

A decision support scheme for vertebral geometry on body CT scans.

Tatsuro Hayashi, Huayue Chen, Kei Miyamoto, Xiangrong Zhou, Takeshi Hara, Ryujiro Yokoyama, Masayuki Kanematsu, Hiroaki Hoshi, Hiroshi Fujita

Proceedings of the Medical Imaging 2011: Image Processing, 2011

A computerized scheme for localization of vertebral bodies on body CT scans.

Tatsuro Hayashi, Huayue Chen, Kei Miyamoto, Xiangrong Zhou, Takeshi Hara, Ryujiro Yokoyama, Masayuki Kanematsu, Hiroaki Hoshi, Hiroshi Fujita

Proceedings of the Medical Imaging 2011: Image Processing, 2011

Automated segmentation of recuts abdominis muscle using shape model in X-ray CT images.

Naoki Kamiya, Xiangrong Zhou, H. Chen, Chisako Muramatsu, Takeshi Hara, Ryujiro Yokoyama, Masayuki Kanematsu, Hiroaki Hoshi, Hiroshi Fujita

Proceedings of the 33rd Annual International Conference of the IEEE Engineering in Medicine and Biology Society, 2011

2010

Automated extraction method for the center line of spinal canal and its application to the spinal curvature quantification in torso X-ray CT images.

Tatsuro Hayashi, Xiangrong Zhou, Huayue Chen, Takeshi Hara, Kei Miyamoto, Tatsunori Kobayashi, Ryujiro Yokoyama, Masayuki Kanematsu, Hiroaki Hoshi, Hiroshi Fujita

Proceedings of the Medical Imaging 2010: Image Processing, 2010

A model based method for recognizing psoas major muscles in torso CT images.

Naoki Kamiya, Xiangrong Zhou, Huayue Chen, Takeshi Hara, Ryujiro Yokoyama, Masayuki Kanematsu, Hiroaki Hoshi, Hiroshi Fujita

Proceedings of the Medical Imaging 2010: Computer-Aided Diagnosis, San Diego, 2010

2009

Automated segmentation and recognition of the bone structure in non-contrast torso CT images using implicit anatomical knowledge.

Xiangrong Zhou, Tatsuro Hayashi, Mingxu Han, Huayue Chen, Takeshi Hara, Hiroshi Fujita, Ryujiro Yokoyama, Masayuki Kanematsu, Hiroaki Hoshi

Proceedings of the Medical Imaging 2009: Image Processing, 2009

2008

Automated Estimation of the Upper Surface of the Diaphragm in 3-D CT Images.

Xiangrong Zhou, Hiroaki Ninomiya, Takeshi Hara, Hiroshi Fujita, Ryujiro Yokoyama, Huayue Chen, Takuji Kiryu, Hiroaki Hoshi

IEEE Trans. Biomed. Eng., 2008

Automated segmentation of mammary gland regions in non-contrast X-ray CT images.

Xiangrong Zhou, Mingxu Han, Takeshi Hara, Hiroshi Fujita, Keiko Sugisaki, Huayue Chen, Gobert N. Lee, Ryujiro Yokoyama, Masayuki Kanematsu, Hiroaki Hoshi

Comput. Medical Imaging Graph., 2008

Automated segmentation of middle hepatic vein in non-contrast x-ray CT images based on an atlas-driven approach.

Teruhiko Kitagawa, Xiangrong Zhou, Takeshi Hara, Hiroshi Fujita, Ryujiro Yokoyama, Hiroshi Kondo, Masayuki Kanematsu, Hiroaki Hoshi

Proceedings of the Medical Imaging 2008: Image Processing, 2008

2007

Development of an Automated Method for the Detection of Chronic Lacunar Infarct Regions in Brain MR Images.

Ryujiro Yokoyama, Xuejun Zhang, Yoshikazu Uchiyama, Hiroshi Fujita, Takeshi Hara, Xiangrong Zhou, Masayuki Kanematsu, Takahiko Asano, Hiroshi Kondo, Satoshi Goshima, Hiroaki Hoshi, Toru Iwama

IEICE Trans. Inf. Syst., 2007

CAD on Liver Using CT and MRI.

Xuejun Zhang, Hiroshi Fujita, Tuanfa Qin, Jinchuang Zhao, Masayuki Kanematsu, Takeshi Hara, Xiangrong Zhou, Ryujiro Yokoyama, Hiroshi Kondo, Hiroaki Hoshi

Proceedings of the Medical Imaging and Informatics, 2nd International Conference, 2007

Automated segmentation of mammary gland regions in non-contrast torso CT images based on probabilistic atlas.

Xiangrong Zhou, M. Kan, Takeshi Hara, Hiroshi Fujita, Keiko Sugisaki, Ryujiro Yokoyama, Gobert N. Lee, Hiroaki Hoshi

Proceedings of the Medical Imaging 2007: Image Processing, 2007

Segmentation of liver region with tumorous tissues.

Xuejun Zhang, Gobert N. Lee, Tetsuji Tajima, Teruhiko Kitagawa, Masayuki Kanematsu, Xiangrong Zhou, Takeshi Hara, Hiroshi Fujita, Ryujiro Yokoyama, Hiroshi Kondo, Hiroaki Hoshi, Shigeru Nawano, Kenji Shinozaki

Proceedings of the Medical Imaging 2007: Image Processing, 2007

Automated segmentation of hepatic vessel trees in non-contrast x-ray CT images.

Suguru Kawajiri, Xiangrong Zhou, Xuejin Zhang, Takeshi Hara, Hiroshi Fujita, Ryujiro Yokoyama, Hiroshi Kondo, Masayuki Kanematsu, Hiroaki Hoshi

Proceedings of the Medical Imaging 2007: Image Processing, 2007

Computerized scheme for detection of arterial occlusion in brain MRA images.

Masashi Yamauchi, Yoshikazu Uchiyama, Ryujiro Yokoyama, Takeshi Hara, Hiroshi Fujita, Hiromichi Ando, Hiroyasu Yamakawa, Toru Iwama, Hiroaki Hoshi

Proceedings of the Medical Imaging 2007: Computer-Aided Diagnosis, San Diego, 2007

Computer-aided detection (CAD) of hepatocellular carcinoma on multiphase CT images.

Tetsuji Tajima, Xuejun Zhang, Teruhiko Kitagawa, Masayuki Kanematsu, Xiangrong Zhou, Takeshi Hara, Hiroshi Fujita, Ryujiro Yokoyama, Hiroshi Kondo, Hiroaki Hoshi, Shigeru Nawano, Kenji Shinozaki

Proceedings of the Medical Imaging 2007: Computer-Aided Diagnosis, San Diego, 2007

2006

Automatic segmentation and recognition of anatomical lung structures from high-resolution chest CT images.

Xiangrong Zhou, Tatsuro Hayashi, Takeshi Hara, Hiroshi Fujita, Ryujiro Yokoyama, Takuji Kiryu, Hiroaki Hoshi

Comput. Medical Imaging Graph., 2006

Constructing a Probabilistic Model for Automated Liver Region Segmentation Using Non-contrast X-Ray Torso CT images.

Xiangrong Zhou, Teruhiko Kitagawa, Takeshi Hara, Hiroshi Fujita, Xuejun Zhang, Ryujiro Yokoyama, Hiroshi Kondo, Masayuki Kanematsu, Hiroaki Hoshi

Proceedings of the Medical Image Computing and Computer-Assisted Intervention, 2006

Automated Classification of Cerebral Arteries in MRA Images and Its Application to Maximum Intensity Projection.

Yoshikazu Uchiyama, Masashi Yamauchi, Hiromichi Ando, Ryujiro Yokoyama, Takeshi Hara, Hiroshi Fujita, Toru Iwama, Hiroaki Hoshi

Proceedings of the 28th International Conference of the IEEE Engineering in Medicine and Biology Society, 2006

2004

Automatic recognition of lung lobes and fissures from multislice CT images.

Xiangrong Zhou, Tatsuro Hayashi, Takeshi Hara, Hiroshi Fujita, Ryujiro Yokoyama, Takuji Kiryu, Hiroaki Hoshi

Proceedings of the Medical Imaging 2004: Image Processing, 2004

Automated segmentations of skin, soft-tissue, and skeleton, from torso CT images.

Xiangrong Zhou, Takeshi Hara, Hiroshi Fujita, Ryujiro Yokoyama, Takuji Kiryu, Hiroaki Hoshi

Proceedings of the Medical Imaging 2004: Image Processing, 2004

Automated identification of thoracic cage region from X-ray CT images.

Shinji Kobayashi, Xiangrong Zhou, Takeshi Hara, Hiroshi Fujita, Ryujiro Yokoyama, Takuji Kiryu, Hiroaki Hoshi

Proceedings of the CARS 2004. Computer Assisted Radiology and Surgery. Proceedings of the 18th International Congress and Exhibition, 2004

2003

Lung structure recognition - a further study of thoracic organ recognitions based on CT Images.

Xiangrong Zhou, Shigeaki Kobayashi, Tatsuro Hayashi, N. Murata, Takeshi Hara, Hiroshi Fujita, Ryujiro Yokoyama, Takuji Kiryu, Hiroaki Hoshi, Machiko Sato

Proceedings of the CARS 2003. Computer Assisted Radiology and Surgery. Proceedings of the 17th International Congress and Exhibition, 2003