Koji Okihara

ORCID: 0000-0002-0809-2283
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About
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Research Areas
  • Prostate Cancer Diagnosis and Treatment
  • Prostate Cancer Treatment and Research
  • Advanced Radiotherapy Techniques
  • Urinary Bladder and Prostate Research
  • Cancer, Lipids, and Metabolism
  • Urological Disorders and Treatments
  • Radiation Dose and Imaging
  • Renal cell carcinoma treatment
  • Folate and B Vitamins Research
  • Multiple and Secondary Primary Cancers
  • Ultrasound and Hyperthermia Applications
  • Hormonal and reproductive studies
  • Photoacoustic and Ultrasonic Imaging
  • Molecular Biology Techniques and Applications
  • Radiomics and Machine Learning in Medical Imaging

Maizuru Municipal Hospital
2024-2025

Kyoto Prefectural University of Medicine
1994-2024

North Medical Center
2022

The University of Texas MD Anderson Cancer Center
2001

ABSTRACT Background Differences in the effectiveness of second‐generation androgen receptor axis‐targeted agents (ARATs) high‐risk metastatic hormone‐sensitive prostate cancer (mHSPC) remain unclear. This study aimed to identify factors influencing efficacy ARATs patients with mHSPC and compare their long‐term effectiveness. Methods Four hundred sixty‐six treated were retrospectively recruited from our hospital affiliated hospitals Kindai Oncology Study Group Kyoto Prefectural University...

10.1002/pros.24855 article EN The Prostate 2025-01-15

Osamu Ukimura received clinical trial equipment (including cryoablation device, and cryo-needle, thermo-senser, urethra-warming catheter) from Boston Scientific Japan CO., LTD, in an Investigator-initiated Trial (registered as jRCT2052210088). All other authors have nothing to disclose.

10.1111/iju.15062 article EN International Journal of Urology 2022-12-09

Permanent prostate brachytherapy is frequently performed worldwide, and many studies have demonstrated its favorable outcomes. Implant seeds used in this procedure contain a precise amount of radionuclide are completely sealed. Because these not manufactured Japan, they expensive (6300 yen per seed) therefore need careful management as radioisotope. The proper implantation technique requires considerable time, good dosimetric outcomes simple radioactive isotope management. To evaluate the...

10.1093/jrr/rrs126 article EN cc-by-nc Journal of Radiation Research 2013-01-04

Objective We developed fiducial imaging‐guidance markers for the prostate with less imaging artifacts than currently commercially available markers. The aim of this study was to evaluate and potential usefulness safety these novel in preclinical experiments. Methods selected specific metal materials a shape that can minimize line license we obtained gold‐platinum (Au‐Pt) alloy composition maximized artifact‐free MRI images. Both phantom canine tests were conducted order three modalities,...

10.1111/iju.15389 article EN International Journal of Urology 2024-01-09

Dynamic changes in the focal hypoehoic lesion (FHL) prostate, visualized by transrectal sonography (TRS), were determined five patients with prostatic cancer (PC) after treatment castration. In all cases, volume of FHL, as well whole decreased exponentially four out (not including which might suggest normal tissues) increased slightly early postoperative weeks, and thereafter. remaining one case, it consecutively. According to formula established our previous study, reduction time (tau)...

10.1002/pros.2990240506 article EN The Prostate 1994-05-01

Abstract Objectives To compare the efficacy of abiraterone with that bicalutamide in combination gonadotropin-releasing hormone antagonist treatment for high risk metastatic hormone-sensitive prostate cancer patients. Methods One hundred and forty-nine patients at our hospital affiliated hospitals between December 2013 July 2020 were retrospectively identified. Fifty administered (1000mg/day) plus prednisolone (5mg/day) (degarelix) (group A) 99 (80mg/day) B). Results PSA- progression-free...

10.21203/rs.3.rs-269640/v1 preprint EN cc-by Research Square (Research Square) 2021-03-05
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