Faculty of Medicine University of Miyazaki


Professor and Chairman, Toshionri Hirai, MD, PhD.

Our radiology section is one of the finest academic and practical departments in the specialty field in Japan and is divided into 4 subspecialities: diagnostic radiology, nuclear medicine, interventional radiology, and radiation oncology. We provide patient-oriented services using the latest imaging technology to diagnose and treat patients. We have well organized referral system connecting 3 prefectural hospitals, as well as private hospitals in Miyazaki Prefecture. Our educational programs include teaching activities in undergraduate medical and postgraduate school education, residency programs, and subspecialty fellowship training. For residents, we offer 5-year training courses in which sufficient number of clinical cases are provided with our excellent teaching staffs that enables them to fulfill the required condition to be a radiology specialist. Please join our outstanding staffs and enjoy our programs and medical service.

Major subspeciality

  1. Diagnostic radiology (CT/MRI)
    • Neuroradiology: Morphologic and functional MRI studies using latest diffusion, perfusion, MR spectroscopy, quantitative susceptibility mapping (QSM), and other quantitative imaging technology
    • Thoracic radiology: Comprehensive diagnosis with CT and MRI for lung, mediastinum, cardiovascular system, breast and other regions. CT-guided procedures for diagnosis and treatment
    • Abdominal radiology: Comprehensive diagnosis with CT and MRI for various abdominal organs. Functional MR studies using latest fat-quantification and other quantitative imaging technology
  2. Nuclear medicine
    • Clinical studies using PET/CT and SPECT/CT systems for nuclear oncology, nuclear cardiology and nuclear neurology.
    • Radioisotope therapy: Radioactive iodine treatment for thyroid cancer and hyperthyroidism、Bone pain palliation with strontium-89 in cancer patients with bone metastases, Radioimmunotherapy for lymphoma using In-111 ZEVALIN and Y-90 ZEVALIN.
  3. Interventional radiology (IVR)
    • Vascular & non-vascular IVR: Emergency embolization for traumatic bleeding, transarterial chemoembolization for hepatic tumors, stenting for steno-occlusive disease, coil embolization for aneurysm, multi-therapy for venous thrombosis, and percutaneous vertebroplasty
  4. Radiation oncology
    • Intensity modulated radiation therapy (IMRT) using linear accelerators to deliver very precise doses of radiation which are shaped to the size of the tumor
    • Stereotactic radiation therapy (SRT) using high precision delivery of high dose radiation while sparing normal adjacent tissue
    • Total body irradiation and emergency radiotherapy for some kinds of cancer

Main clinical researches

  • Quantitative MR imaging including T1&T2 mapping, QSM, and DSC&DCE and ASL perfusion for brain tumor, cerebrovascular disease and neurodegenerative disease
  • Advanced diffusion-tensor imaging including NODDI for various diseases
  • Fat quantification with 6-point Dixon technique for abdominal organs
  • CT-guided lung biopsy and radiofrequency ablation (RFA)
  • Correlation between various oncogenes expression and FDG uptake in pancreas cancer and biliary cancer.
  • Pioneering approach for PET imaging of epigenetic regulation via histone deacetylases (HDACs) in the brain using 18F-FAHA, tumor imaging with 18F-fluoroacetate, 11C-acetate and 11C-MeAIB


  • Azuma M, Hirai T, Yamada K, Yamashita S, Ando Y, Tateishi M, Iryo Y, Yoneda T, Kitajima M, Wang Y, Yamashita Y. Lateral asymmetry and spatial difference of iron deposition in the substantia nigra of patients with Parkinson disease measured with quantitative susceptibility mapping. AJNR Am J Neuroradiol. 2016 37: 782-788
  • Iryo Y, Hirai T, Nakamura M, Kawano T, Kaku Y, Ohmori Y, Kai Y, Azuma M, Nishimura S, Shigematsu Y, Kitajima M, Yamashita Y. Evaluation of intracranial arteriovenous malformations with four-dimensional arterial-spin labeling-based 3-T magnetic resonance angiography. J Comput Assist Tomogr. 2016;40:290-296.


Chairman’s office:
5200 Kihara, Kiyotake, Miyazaki 889-1692, Japan
Phone: +81-985-85-2807
Fax: +81-985-85-7172
E-mail: toshinorh@med.miyazaki-u.ac.jp

For career opportunities:
Please contact Takashi Jinnouchi, MD.
E-mail: takashi_jinnouchi@med.miyazaki-u.ac.jp