Faculty Profiles - Deguchi Daisuke

Papers - Deguchi Daisuke

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A Method for Accelerating Bronchoscope Tracking Based on Image Registration by GPGPU Reviewed

Takamasa Sugiura, Daisuke Deguchi, Takayuki Kitasaka, Kensaku Mori, Yasuhito Suenaga

Proceedings of International Workshop on Augmented environments for Medical Imaging and Computer-aided Surgery (AMI-ARCS) 2008 page： 130 - 139 2008.9

Improvement of Accuracy of Marker-Free Bronchoscope Tracking Using Electromagnetic Tracker Based on Bronchial Branch Information Reviewed

Kensaku Mori, Daisuke Deguchi, Takayuki Kitasaka, Yasuhito Suenaga, Yoshinori Hasegawa, Kazuyoshi Imaizumi, Hirotsugu Takabatake

Proceedings of the 11th International Conference on Medical Image Computing and Computer-Assisted Intervention (MICCAI2008) Vol. LNCS 5242, Part II page： 535 - 542 2008.9

Augmented display of anatomical names of bronchial branches for bronchoscopy assistance Reviewed

Shunsuke Ota, Daisuke Deguchi, Takayuki Kitasaka, Kensaku Mori, Yasuhito Suenaga, Yoshinori Hasegawa, Kazuyoshi Imaizumi, Hirotsugu Takabatake, Masaki Mori, Hiroshi Natori

Proceedings of the 4th International Workshop on Medical Imaging and Augmented Reality (MIAR2008) Vol. LNCS 5128 page： 377 - 384 2008.8

An improved method for bronchoscope tracking using an electromagnetic tracker without fiducial markers Reviewed

Daisuke Deguchi, Kazuyoshi Ishitani, Takayuki Kitasaka, Kensaku Mori, Yasuhito Suenaga, Yoshinori Hasegawa, Kazuyoshi Imaizumi

Proceedings of the 22st International Congress and Exhibition on Computer Assisted Radiology and Surgery (CARS2008) Vol. 3 page： S301 2008.6

Automated anatomical labeling of bronchaial branches using multiple classifiers and its application to bronchoscopy guidance Reviewed

Shunsuke Ota, Daisuke Deguchi, Takayuki Kitasaka, Kensaku Mori, Yasuhito Suenaga, Yoshinori Hasegawa, Kazuyoshi Imaizumi, Hirotsugu Takabatake, Masaki Mori, Hiroshi Natori

Proceedings of the 22st International Congress and Exhibition on Computer Assisted Radiology and Surgery (CARS2008) Vol. 3 page： S269 2008.6

Fiducial-free bronchoscope tracking using ultra-tiny electromagnetic tracker based on non-rigid transformation technique Reviewed

Kensaku Mori, Kazuyoshi Ishitani, Daisuke Deguchi, Takayuki Kitasaka, Yasuhito Suenaga, Yoshinori Hasegawa, Kazuyoshi Imaizumi

Proceedings of the 22st International Congress and Exhibition on Computer Assisted Radiology and Surgery (CARS2008) Vol. 3 page： S105 2008.6

Automated anatomical labeling of bronchial branches using multiple classifiers and its application to bronchoscopy guidance based on fusion of virtual and real bronchoscopy Reviewed

Shunsuke Ota, Daisuke Deguchi, Takayuki Kitasaka, Kensaku Mori, Yasuhito Suenaga, Yoshinori Hasegawa, Kazuyoshi Imaizumi, Hirotsugu Takabatake, Masaki Mori, Hiroshi Natori

Proceedings of SPIE Medical Imaging 2008 Vol. 6916 page： 1 - 12 2008.2

Bronchoscope Tracking Without Fiducial Markers Using Ultra-tiny Electromagnetic Tracking System and Its Evaluation in Different Environments Reviewed

Kensaku Mori, Daisuke Deguchi, Kazuyoshi Ishitani, Takayuki Kitasaka, Yasuhito Suenaga, Yoshinori Hasegawa, Kazuyoshi Imaizumi, Hirotsugu Takabatake

Proceedings of the 10th International Conference on Medical Image Computing and Computer Assisted Intervention (MICCAI2007) Vol. LNCS 4792, Part II page： 644 - 651 2007.10

A method for bronchoscope tracking using position sensor without fiducial markers Reviewed

Daisuke Deguchi, Kazuyoshi Ishitani, Takayuki Kitasaka, Kensaku Mori, Yasuhito Suenaga, Yoshinori Hasegawa, Hirotsugu Takabatake, Masaki Mori, Hiroshi Natori

Proceedings of the 21st International Congress and Exhibition on Computer Assisted Radiology and Surgery (CARS2007) Vol. 2 page： S11-S13 2007.6

A method for bronchoscope tracking using position sensor without fiducial markers Reviewed

Daisuke Deguchi, Kazuyoshi Ishitani, Takayuki Kitasaka, Kensaku Mori, Yasuhito Suenaga, Hirotsugu Takabatake, Masaki Mori, Hiroshi Natori

Proceedings of SPIE Medical Imaging 2007 Vol. 6511 page： 1 - 0 2007.2

Easy and stable bronchoscope camera calibration technique for bronchoscope navigation system Reviewed

Kazuyoshi Ishitani, Daisuke Deguchi, Takayuki Kitasaka, Kensaku Mori, Yasuhito Suenaga, Hirotsugu Takabatake, Masaki Mori, Hiroshi Natori

Proceedings of SPIE Medical Imaging 2007 Vol. 6509 page： 1 - 1 2007.2

Compensation of Electromagnetic trackintg system using an optical tracker and its application to bronchoscopy navigation system Reviewed

Kensaku Mori, Kazuyoshi Ishitani, Daisuke Deguchi, Takayuki Kitasaka, Yasuhito Suenaga, Hirotsugu Takabatake, Masaki Mori, Hiroshi Natori

Proceedings of SPIE Medical Imaging 2007 Vol. 6509 page： 1 - 0 2007.2

Evaluation of a prostate biopsy strategy for cancer detection using a computer simulation system with virtual needle biopsy for three-dimensional prostate models Reviewed

Masanori Noguchi, Daisuke Deguchi, Junichiro Toriwaki, Kensaku Mori, Yoshito Mekada, Kei Matsuoka

International Journal of Urology Vol. 13 ( 10 ) page： 1296 - 1303 2006.10

Language：English Publishing type：Research paper (scientific journal)

AIM:We evaluated a prostate biopsy strategy for cancer detection using a computer simulation system with virtual needle biopsy for three-dimensional (3D) prostate models.
METHODS:Two 3D prostate models with a volume of 25 cc or 50 cc were constructed from computed tomographic images of radical prostatectomy specimens. The peripheral zone (PZ) and transition zone (TZ) were arranged in the prostate models according to the anatomical information. Four thousand patterns of cancer lesions were automatically inserted into each prostate model with a proportion of 75% in PZ and 25% in TZ. Average hit rates (AHR) in prostate models were evaluated both with an increased number of biopsy cores and various angles of virtual needle biopsy. The influence of adding secondary tumors for hit rates was also evaluated.
RESULTS:For both sizes, the laterally angled biopsy in 4-8 core biopsy schemes showed higher AHR than the vertical plane biopsy, while the vertical plane biopsy in 10-18 core biopsy schemes showed higher AHR than the laterally angled biopsy. A higher number of biopsy cores increased the AHR of secondary tumors.
CONCLUSIONS:Our results suggest that it is important in prostate cancer detection to change the needle placement according to the number of biopsy cores and the size of the prostate.

DOI： 10.1111/j.1442-2042.2006.01561.x

A preliminary study on introduction of a magnetic tracking sensor for bronchoscope navigation system Reviewed

Kazuyoshi Ishitani, Daisuke Deguchi, Takayuki Kitasaka, Kensaku Mori, Yasuhito Suenaga, Hirotsugu Takabatake, Masaki Mori, Hiroshi Natori

Proceedings of International Workshop on Augmented environments for Medical Imaging and Computer-aided Surgery (AMI-ARCS) 2006 2006.10

Bronchoscope Tracking Based on Image Registration Using Multiple Initial Starting Points Estimated by Motion Prediction Reviewed

Kensaku Mori, Daisuke Deguchi, Takayuki Kitasaka, Yasuhito Suenaga, Hirotsugu Takabatake, Masaki Mori, Hiroshi Natori, Calvin R. Maurer Jr.

Proceedings of the 9th International Conference on Medical Image Computing and Computer Assisted Intervention (MICCAI2006) Vol. LNCS 4191, Part II page： 645 - 652 2006.10

Detection of liver cancer regions from dynamic CT images Reviewed

Yuichiro Hayashi, Daisuke Deguchi, Takayuki Kitasaka, Kensaku Mori, Yoshito Mekada, Yasuhito Suenaga

Proceedings of the 20th International Congress and Exhibition on Computer Assisted Radiology and Surgery (CARS2006) Vol. 1 page： 524 - 525 2006.6

Image-based bronchoscope tracking using motion predication and multiple searches Reviewed

Kensaku Mori, Daisuke Deguchi, Takayuki Kitasaka, Yasuhito Suenaga, Hirotsugu Takabatake, Masaki Mori, Hiroshi Natori

Proceedings of the 20th International Congress and Exhibition on Computer Assisted Radiology and Surgery (CARS2006) Vol. 1 page： 178 - 181 2006.6

A method for bronchoscope tracking by combining a position sensor and image registration Reviewed

Daisuke Deguchi, Kenta Akiyama, Kensaku Mori, Takayuki Kitasaka, Yasuhito Suenaga, Calvin R. Maurer Jr., Hirotsugu Takabatake, Masaki Mori, Hiroshi Natori

Computer Aided Surgery Vol. 11 ( 3 ) page： 109 - 117 2006.5

Authorship：Lead author Language：English Publishing type：Research paper (scientific journal)

This paper describes a method for tracking a bronchoscope by combining a position sensor and image registration. A bronchoscopy guidance system is a tool for providing real-time navigation information acquired from pre-operative CT images to a physician during a bronchoscopic examination. In this system, one of the fundamental functions is tracking a bronchoscope's camera motion. Recently, a very small electromagnetic position sensor has become available. It is possible to insert this sensor into a bronchoscope's working channel to obtain the bronchoscope's camera motion. However, the accuracy of its output is inadequate for bronchoscope tracking. The proposed combination of the sensor and image registration between real and virtual bronchoscopic images derived from CT images is quite useful for improving tracking accuracy. Furthermore, this combination has enabled us to achieve a real-time bronchoscope guidance system. We performed evaluation experiments for the proposed method using a rubber phantom model. The experimental results showed that the proposed system allowed the bronchoscope's camera motion to be tracked at 2.5 frames per second.

Branch identification method for CT-guided bronchoscopy based on eigenspace image matching between real and virtual bronchoscopic images Reviewed

Riyoko Shinohara, Kensaku Mori, Daisuke Deguchi, Takayuki Kitasaka, Yasuhito Suenaga, Hirotsugu Takabatake, Masaki Mori, Hiroshi Natori

Proceedings of SPIE Medical Imaging 2006 Vol. 6143 page： 14 - 1 2006.2

A method for automated liver region extraction basing upon estimation of CT value distributions from multi-phase CT images Reviewed

Daisuke Deguchi, Yuichiro Hayashi, Takayuki Kitasaka, Kensaku Mori, Yoshito Mekada, Yasuhito Suenaga, Jun-ichi Hasegawa, Junichiro Toriwaki

Journal of Computer Aided Diagnosis of Medical Images Vol. 9 ( 4 ) page： 36 - 48 2006.1

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Papers - Deguchi Daisuke