Faculty Profiles - Deguchi Daisuke

Papers - Deguchi Daisuke

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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

Development of a Virtual Needle Biopsy Simulation System for the Virtual Prostate Reviewed

Daisuke Deguchi, Kensaku Mori, Yoshito Mekada, Jun-ichi Hasegawa, Junichiro Toriwaki, Masanori Noguchi

Systems and Computers in Japan Vol. 37 ( 1 ) page： 93 - 104 2006.1

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

This paper discusses the virtual prostate needle biopsy system and the construction of the virtual prostate model, considering the actual distribution of prostate abnormalities. A needle biopsy simulation is performed for the constructed virtual prostate, and the actual biopsy procedure in the clinical situation is evaluated. The prostate needle biopsy is a histologic diagnosis procedure in which a sample is acquired from the prostate tissue by needle biopsy and is inspected under a microscope. In order to achieve reliable prostate needle biopsy, it is necessary to consider systematically and numerically the number of needles required, and their locations and insertion angles.
For such a purpose, a system is developed in which a virtual prostate is constructed on a computer and the biopsy procedure is evaluated quantitatively by performing virtually the prostate needle biopsy. Furthermore, two different models are constructed, for the prostate with and without hypertrophy, based on the actual statistical distribution data for
prostate abnormalities. Each model is partitioned into the peripheral zone and the transition zone. The constructed
virtual prostate is input into the virtual needle biopsy simulation system, and three different systematic biopsy procedures actually used at clinical sites, and four different needle biopsy procedures, are experimentally evaluated.
The experiments show that the insertion angle that maximizes the hit probability is not always the same as the
insertion angle that maximizes cancer sample acquisition. It is evident that the proposed method can indicate a biopsy
procedure which realizes a high hit probability with a small number of needles.

DOI： 10.1002/scj.20181

Hybrid Bronchoscope Tracking Using a Magnetic Tracking Sensor and Image Registration Reviewed

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

Proceedings of the 8th International Conference on Medical Image Computing and Computer Assisted Intervention (MICCAI2005) Vol. LNCS 3750, Part II page： 543 - 550 2005.10

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

Daisuke Deguchi, Kenta Akiyama, Takayuki Kitasaka, Kensaku Mori, Yasuhito Suenaga, Jun-ichi Hasegawa, Junichiro Toriwaki, Hirotsugu Takabatake, Masaki Mori, Hiroshi Natori

Proceedings of the 19th International Congress and Exhibition on Computer Assisted Radiology and Surgery (CARS2005) Vol. 1281 page： 630 - 635 2005.6

Development of a method for automated liver region extraction from contrasted 3D abdominal X-ray CT images Reviewed

Yuichiro Hayashi, Daisuke Deguchi, Kensaku Mori, Yoshito Mekada, Yasuhito Suenaga, Junichiro Toriwaki

Journal of Computer Aided Diagnosis of Medical Images Vol. 8 ( 1_3 ) page： 18 - 30 2004.11

Fast and Accurate Bronchoscope Tracking using Image Registration and Motion Prediction Reviewed

Jiro Nagao, Kensaku Mori, Tsutomu Enjoji, Daisuke Deguchi, Takayuki Kitasaka, Yasuhito Suenaga, Jun-ichi Hasegawa, Junichiro Toriwaki, Hirotsugu Takabatake, Hiroshi Natori

Proceedings of the 7th International Conference on Medical Image Computing and Computer Assisted Intervention (MICCAI2004) Vol. LNCS 3217, Part II page： 551 - 558 2004.9

Improved camera-tracking method by combining motion prediction and image registration for bronchoscope navigation system Reviewed

Kensaku Mori, Tsutomu Enjoji, Daisuke Deguchi, Takayuki Kitasaka, Yasuhito Suenaga, Junichiro Toriwaki, Hiroshi Natori, Hirotsugu Takabatake

Proceedings of the 18th International Congress and Exhibition on Computer Assisted Radiology and Surgery (CARS2004) Vol. 1268 page： 1261 2004.6

New image similarity measures for bronchoscope tracking based on image registration between virtual and real bronchoscopic images Reviewed

Kensaku Mori, Tsutomu Enjoji, Daisuke Deguchi, Takayuki Kitasaka, Yasuhito Suenaga, Junichiro Toriwaki, Hirotsugu Takabatake, Hiroshi Natori

Proceedings of SPIE Medical Imaging 2004 Vol. 5639 page： 165 - 176 2004.2

Development of a simulation system of the virtual needle biopsy for the virtual prostate Reviewed

Daisuke Deguchi, Kensaku Mori, Yoshito Mekada, Jun-ichi Hasegawa, Junichiro Toriwaki, Masanori Noguchi

IEICE Transactions on Information and Systems Vol. J87-D-II ( 1 ) page： 281 - 289 2004.1

New Image Similarity Measure for Bronchoscope Tracking Based on Image Registration Reviewed

Daisuke Deguchi, Kensaku Mori, Yasuhito Suenaga, Jun-ichi Hasegawa, Junichiro Toriwaki, Hirotsugu Takabatake, Hiroshi Natori

Proceedings of the 6th International Conference on Medical Image Computing and Computer Assisted Intervention (MICCAI2003) Vol. LNCS 2878 page： 399 - 406 2003.11

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Papers - Deguchi Daisuke