Kondo CT Imaging LabKyushu University 日本語

Science of CT Imaging · Fukuoka, Japan

Turning clinical CT images into
more reliable quantitative information.

We make the most of existing medical equipment and imaging data to advance greener radiology.

Explore our research Research collaboration
01 / Spectral CT02 / Low-dose imaging03 / Reconstruction

Research

Research themes

Focusing on dual-energy CT, low-dose CT, and image reconstruction, we revisit CT imaging from the perspective of radiation physics and work to improve the accuracy and reproducibility of quantitative image evaluation.

01

Focus area

Dual-energy & Spectral CT

We quantitatively examine material decomposition, virtual monoenergetic imaging, and beam-hardening effects to improve the reliability of basis-material density images.

  • Material decomposition
  • VMI
  • Quantitative CT
02

Focus area

Low-dose CT

We investigate the relationships among image noise, reproducibility, and acquisition parameters to preserve diagnostically useful information while reducing radiation exposure.

  • Dose reduction
  • Noise
  • Reproducibility
03

Focus area

Reconstruction & Physics

We analyze how reconstruction algorithms and scan geometry affect CT images and develop predictable, reproducible methods for image evaluation.

  • Reconstruction
  • CT geometry
  • Validation

Our approach

From measurement to clinical use.A consistent research design.

Starting with system physics, we ask why CT images look the way they do, measure the underlying effects, test reproducibility, and translate the findings into clinically useful methods.

01

Measure

Describe quantitatively

We describe image quality and errors that are difficult to judge visually in terms of physical and statistical quantities.

02

Validate

Test reproducibility

Through phantom experiments and repeated measurements, we test whether findings remain valid across systems and acquisition conditions.

03

Translate

Connect with clinical practice

We translate insights from imaging science into methods that can improve diagnostic accuracy and reduce patient burden.

Free research web tool

CT Angular-Longitudinal Diagram & SSPz Geometry Reference

Free to use in your browser; no registration or installation is required. Explore how detector-row geometry, beam pitch, transaxial position, and configured slice thickness affect longitudinal candidate-ray positions, linear interpolation weights, and an explanatory longitudinal slice sensitivity profile (SSPz). The model uses acquired projection data over a 0–360° full scan and does not emulate a proprietary commercial reconstruction.

Open the free SSPz geometry reference
Angular-longitudinal diagram generated by the simulator for 160 detector rows of 0.5 mm width at a radial position of 250 mm.
160 rows × 0.5 mm r = 250 mm · beam pitch 0.875 · cone-geometry scaling Generated with the free simulator

Free web tool

Presentation & Q&A Countdown

Optimized for smartphones and tablets. Set presentation and discussion times in minutes and seconds, then use the large countdown, selectable alert sound, and one-tap next-speaker restart.

Open the timer
Presentation and Q&A Countdown setup screen

Free web tool

School Bell Scheduler

Set lesson start and end times and play a school chime according to network-synchronized time. Designed for iPad and browser use, with editable schedules, weekday selection, volume control, and Japanese and English interfaces.

Open the school bell tool
School Bell Scheduler showing network-synchronized time and the next chime

Highlights

Recent Achievements & Recognition

Our latest research presentation and professional recognition. A complete chronological record is available in the achievement archive.

Conference recognition

Joint 5th Place · Top 12 Presentations

CyPos Audience Recognition

Energy Dependence of Water-Density Correction in Virtual Monoenergetic Images of Dual-Energy CT

Koki NanjoGraduate School of Medical Sciences, Kyushu University

82nd Annual Meeting of the Japanese Society of Radiological Technology

View official announcement
Professional recognition

Distinguished Reviewer

Quantitative Imaging in Medicine and Surgery

Recognized for outstanding contribution and dedicated service as a Distinguished Reviewer.

Masatoshi KondoKondo CT Imaging Laboratory

Distinguished Reviewer certificate awarded to Masatoshi Kondo by Quantitative Imaging in Medicine and Surgery View certificate ↗
View all achievements

Podcast

Radiological technology updates, in your language.

Short audio briefings on radiology, medical imaging, medical AI, conferences, and recent research—available on Spotify and Apple Podcasts.

Cover art for 방사선 radio 한국어

방사선 radio

Korean edition

Latest episodeEpisode #12

Spotify
Cover art for รังสี radio ภาษาไทย

รังสี radio

Thai edition

Latest episodeEpisode #12

Spotify

Collaboration

Research collaboration & enquiries

We welcome research discussions with medical institutions, universities, and industry, as well as enquiries about graduate research. Please feel free to contact us even if the connection with our current themes is still taking shape.

Masatoshi Kondo

Profile

Masatoshi Kondo 近藤 雅敏

Division of Medical Quantum Science, Department of Health Sciences, Faculty of Medical Sciences, Kyushu University

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Kyushu University Faculty Profile researchmap