Longitudinal ECT imaging using Y-ray camera. - Satoshi Iwata; Masato Nakajima; Shin'ichi Yuta; Koichi Ogawa (Syst. Comput. Jpn., 1986)

Correction method for collimator effect of ECT. - Satoshi Iwata; Chiaki Yoshida; Masato Nakajima; Koichi Ogawa; Shin'ichi Yuta (Syst. Comput. Jpn., 1986)

Attenuation correction method for single-photon emission ct without any additional data collection. - Ritsu Kusaba; Masato Nakajima; Koichi Ogawa; Shin'ichi Yuta; Tatsuru Morozumi (Syst. Comput. Jpn., 1987)

Regional adaptive histogram equalization using fuzzy sets. - Koichi Ogawa; Atsuhisa Saito; Masato Nakajima; Yutaka Ando; Shozo Hashimoto (Image Processing, 1990)

Optimum contrast enhancement using fuzzy sets. - Atsuhisa Saito; Masato Nakajima; Koichi Ogawa (Syst. Comput. Jpn., 1991)

Introduction of Ordered Subsets Algorithm to Maximum a posteriori Expectation Maximization Method. - Hiroshi Urabe; Koichi Ogawa (ICIP (3), 1998)

Comparative Study on Statistical Image Reconstruction Combined with Modification of the Number of Projections. - Kotoko Morikawa; Koichi Ogawa (ICIP, 2000)

Extraction of Arteriovenous Malformation with Factor Analysis. - Yoshiyuki Nyui; Koichi Ogawa; Etsuo Kunieda (ICIP, 2000)

A shoulder-mounted planar antenna for mobile radio applications. - Koichi Ogawa; Tomoki Uwano; Masao Takahashi (IEEE Trans. Veh. Technol., 2000)

Accurate image reconstruction with the source space tree algorithm (SSTA) for Compton CT. - Koichi Ogawa; Jin Ohta (ICIP (1), 2001)

An analysis of the performance of a handset diversity antenna influenced by head, hand, and shoulder effects at 900 MHz .I. Effective gain characteristics. - Koichi Ogawa; Toshimitsu Matsuyoshi (IEEE Trans. Veh. Technol., 2001)

An analysis of the performance of a handset diversity antenna influenced by head, hand, and shoulder effects at 900 MHz .II. Correlation characteristics. - Koichi Ogawa; Toshimitsu Matsuyoshi; Kenji Monma (IEEE Trans. Veh. Technol., 2001)

Extraction of the vertebral foramen of the third lumbar vertebra with snakes. - Kazumitsu Kondo; Koichi Ogawa; K. Sakura (ICIP (2), 2002)

Selection of projection sets and order of calculation in ordered subsets expectation maximization method. - Koichi Ogawa; Masahiro Takahashi (Syst. Comput. Jpn., 2002)

Image reconstruction with a source space tree algorithm for Compton CT. - Koichi Ogawa; Jin Ohta (Syst. Comput. Jpn., 2003)

An Internet-based Melanoma Diagnostic System - Toward the Practical Application. - Hitoshi Iyatomi; Hiroshi Oka; Masahiro Hashimoto; Masaru Tanaka; Koichi Ogawa (CIBCB, 2005)

Measurements on Area Coverage of 5GHZ Band MIMO-OFDM System in Residential Home Environment. - Nguyen Dung Dao; Hai-Yeow-Eugene Chua; Kei Sakaguchi; Kiyomichi Araki; Hiroshi Iwai; Tsutomu Sakata; Koichi Ogawa (PIMRC, 2005)

Attenuation Characteristics of the SAR in a COST244 Phantom with Different EM Source Locations and Sizes. - Shoichi Kajiwara; Atsushi Yamamoto; Koichi Ogawa; Akihiro Ozaki; Yoshio Koyanagi (IEICE Trans. Commun., 2005)

Evaluation of iterative methods for aperture correction in SPECT. - Nobuhiro Haruta; Koichi Ogawa (Syst. Comput. Jpn., 2005)

Automatic Identification of Shot Body Region from Clinical Photographies. - Hitoshi Iyatomi; Hiroshi Oka; Masaru Tanaka; Koichi Ogawa (AIPR, 2006)

Performance Analysis of MIMO-OFDM Systems using Indoor Wideband MIMO Channel Measurement Data. - Gia Khanh Tran; Nguyen Dung Dao; Kei Sakaguchi; Kiyomichi Araki; Hiroshi Iwai; Tsutomu Sakata; Koichi Ogawa (VTC Spring, 2006)

Simple Modeling of an Abdomen of Pregnant Women and Its Application to SAR Estimation. - Hiroki Kawai; Koichi Ito 003; Masaharu Takahashi; Kazuyuki Saito; Takuya Ueda; Masayoshi Saito; Hisao Ito; Hisao Osada; Yoshio Koyanagi; Koichi Ogawa (IEICE Trans. Commun., 2006)

Effects of Received Power Imbalance on the Channel Capacity of a Handset MIMO. - Koichi Ogawa; Satoru Amari; Hiroshi Iwai; Atsushi Yamamoto (PIMRC, 2007)

Outdoor Urban Propagation Experiment of a Handset MIMO Antenna with a Human Phantom Located in a Browsing Stance. - Atsushi Yamamoto; Toshiteru Hayashi; Koichi Ogawa; Kim Olesen; Jesper Ødum Nielsen; Naizheng Zheng; Gert Frølund Pedersen (VTC Fall, 2007)

IM3 Cancellation Method Using Current Feedback Suitable for a Multi-Stage RFIC Amplifier. - Toshifumi Nakatani; Koichi Ogawa (IEICE Trans. Electron., 2007)

Empirical Investigation of the LOS Propagation Characteristics on an Undulating Road for Millimeter Wave Inter-Vehicle Communication. - Atsushi Yamamoto; Koichi Ogawa; Hiroshi Shirai (IEICE Trans. Electron., 2007)

An improved Internet-based melanoma screening system with dermatologist-like tumor area extraction algorithm. - Hitoshi Iyatomi; Hiroshi Oka; M. Emre Celebi 001; Masahiro Hashimoto; Masafumi Hagiwara; Masaru Tanaka; Koichi Ogawa (Comput. Medical Imaging Graph., 2008)

A Variable Phase Shifter Using a Movable Waffle Iron Metal Plate and Its Applications to Phased Array Antennas. - Hideki Kirino; Koichi Ogawa; Takeshi Ohno (IEICE Trans. Commun., 2008)

A Low Distortion and Low Noise Differential Amplifier Suitable for 3G LTE Applications Using the Even- and Odd-Mode Impedance Differences of a Bias Circuit. - Toshifumi Nakatani; Koichi Ogawa (IEICE Trans. Electron., 2008)

Path-Loss Prediction Models for Intervehicle Communication at 60 GHz. - Atsushi Yamamoto; Koichi Ogawa; Tetsuo Horimatsu; Akihito Kato; Masayuki Fujise (IEEE Trans. Veh. Technol., 2008)

MIMO channel capacity measurement in the presence of spatial clusters using a fading emulator. - Tsutomu Sakata; Atsushi Yamamoto; Koichi Ogawa; Jun-ichi Takada (PIMRC, 2009)

Performance Analysis of MIMO Schemes in Residential Home Environment via Wideband MIMO Propagation Measurement. - Gia Khanh Tran; Nguyen Dung Dao; Kei Sakaguchi; Kiyomichi Araki; Hiroshi Iwai; Tsutomu Sakata; Koichi Ogawa (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2010)

Robust video-oculography for non-invasive autonomic nerve quantification. - Masaru Kiyama; Hitoshi Iyatomi; Koichi Ogawa (EMBC, 2011)

Feasibility evaluation of a motion detection system with face images for stereotactic radiosurgery. - Takuya Yamakawa; Koichi Ogawa; Hitoshi Iyatomi; Etsuo Kunieda (EMBC, 2011)

BAN Communication Quality Assessments Using an Arm-Waving Dynamic Phantom Replicating the Walking Motion of a Human. - Naotake Yamamoto; Naganori Shirakata; Daisuke Kobayashi; Koichi Ogawa (ICC, 2011)

Adaptive Noise Reduction of Scintigrams with a Wavelet Transform. - Koichi Ogawa; Masahiko Sakata; Yu Li (Int. J. Biomed. Imaging, 2012)

Shadowing-fading BER characterization of BAN antennas based on realistic walking models. - Kun Li; Kazuhiro Honda; Koichi Ogawa (ISMICT, 2013)

Shadowing-Fading BER Characterization of a BAN Diversity Antenna Based on Statistical Measurements of the Human Walking Motion. - Kazuhiro Honda; Kun Li 022; Koichi Ogawa (IEICE Trans. Commun., 2013)

Effects of Received Power Imbalance on the Diversity Gain of a Digital TV MRC Array Antenna. - Koichi Ogawa; Kazuhiro Honda (IEICE Trans. Commun., 2013)

Network operational method by using software-defined networking for improvement of communication quality at disasters. - Koichi Ogawa; Noriaki Yoshiura (APNOMS, 2014)

A Spatial Fading Emulator for Evaluation of MIMO Antennas in a Cluster Environment. - Tsutomu Sakata; Atsushi Yamamoto; Koichi Ogawa; Hiroshi Iwai; Jun-ichi Takada; Kei Sakaguchi (IEICE Trans. Commun., 2014)

Experiments of a polarization-controlled active antenna to enhance BAN on-body link in human dynamic channels. - Kun Li; Kazuhiro Honda; Koichi Ogawa (ISMICT, 2015)

Rice Channel Realization for BAN Over-The-Air Testing Using a Fading Emulator with an Arm-Swinging Dynamic Phantom. - Kun Li 022; Kazuhiro Honda; Koichi Ogawa (IEICE Trans. Commun., 2015)

Bit-error-rate OTA testing of BAN antennas based on shadowing-fading hybrid effects. - Kun Li; Keisuke Murata; Kazuhiro Honda; Koichi Ogawa (ISMICT, 2016)

Weighted-Polarization Wearable MIMO Antenna with Three Orthogonally Arranged Dipoles Based on RF Signal Processing. - Kazuhiro Honda; Kun Li 022; Koichi Ogawa (IEICE Trans. Commun., 2016)

Channel Capacity Evaluation of MIMO Antenna Based on Eigenvalues of S-Parameter. - Naoki Honma; Kentaro Murata; Hiroshi Sato; Koichi Ogawa; Yoshitaka Tsunekawa (IEICE Trans. Commun., 2016)

Three-Dimensional Over-The-Air Assessment for Vertically Arranged MIMO Array Antennas. - Kun Li 022; Kazuhiro Honda; Koichi Ogawa (IEICE Trans. Commun., 2016)

Regression-Based Channel Capacity for the Evaluation of 2×2 MIMO Antennas. - Kazuhiro Honda; Takeshi Kitamura; Kun Li 022; Koichi Ogawa (IEICE Trans. Commun., 2017)

Wavelength Analysis Using Equivalent Circuits in a Fast and Slow Wave Waffle-Iron Ridge Guide. - Hideki Kirino; Kazuhiro Honda; Kun Li 022; Koichi Ogawa (IEICE Trans. Commun., 2017)

A Waffle-Iron Ridge Guide with Combined Fast- and Slow-Wave Modes for Array Antenna Applications. - Hideki Kirino; Kazuhiro Honda; Kun Li 022; Koichi Ogawa (IEICE Trans. Commun., 2018)

Quantitative evaluation of deep convolutional neural network-based image denoising for low-dose computed tomography. - Keisuke Usui; Koichi Ogawa; Masami Goto; Yasuaki Sakano; Shinsuke Kyougoku; Hiroyuki Daida (Vis. Comput. Ind. Biomed. Art, 2021)

Analysis of Activity Logs of GakuNin LMS in the Use of the Information Security Course at Gunma University. - Nobukuni Hamamoto; Koichi Ogawa; Hiroshi Ueda; Masako Furukawa; Motonori Nakamura; Kazutsuna Yamaji (KES, 2023)

Comprehensive evaluation of pipelines for classification of psychiatric disorders using multi-site resting-state fMRI datasets. - Yuji Takahara; Yuto Kashiwagi; Tomoki Tokuda; Junichiro Yoshimoto; Yuki Sakai; Ayumu Yamashita; Toshinori Yoshioka; Hidehiko Takahashi; Hiroto Mizuta; Kiyoto Kasai; Akira Kunimitsu; Naohiro Okada; et al. (Neural Networks, 2025)