2. Guide for Visitors
  3. Department of Radiology - Nuclear Medicine

Nuclear MedicineClick here for further details.

Specialized medical services

HATAZAWA Jun Director of Nuclear Medicine

Director of Nuclear Medicine

We perform diagnostic nuclear medicine using radioactive tracers. Nuclear medicine is a method in which a radioactive tracer is administered and its in-vivo kinetics are externally measured over time to evaluate the patient’s pathological condition. Images are taken using a gamma camera, Single Photon Emission Tomography (SPECT), or Positron Emission Tomography (PET), etc. Diagnostic nuclear medicine is useful in diagnosing a wide variety of diseases including malignant tumors, and cardiac, cerebral, respiratory, digestive organ, kidney & ureter-related, endocrine-related, and bone & joint-related diseases. It enables pathological conditions and functionality of the affected organs to be correctly diagnosed.


A small medical cyclotron system installed in our hospital is used to prepare radiopharmaceutical agents and for positron emission tomography (PET) testing. Cancer cells consume abundant glucose for growth. For this reason, 18F-fluorodeoxyglucose (FDG), a radioactive analogue of glucose, accumulates intensively in malignant tumors. PET imaging reveals the sites of abnormal accumulation, and allows cancer to be detected at the early stages, treatment outcomes to be evaluated, and cancer recurrence to be checked. Since October 2002, our section has performed health insurance treatment of cerebral tumors, head & neck carcinomas, pulmonary cancers, breast cancers, pancreatic cancers, metastatic liver cancers, colorectal cancers, malignant lymphomas, malignant melanomas, and cancers of unknown primary location. (In April 2010, the coverage of insurance for the PET testing was extended to further diseases.) We annually perform these tests on 2,500 to 3,000 cases. We have also developed a diagnostic method by overlapping X-ray CT morphological images and MRI images on PET images in cooperation with Department of Radiology, achieving a system for comprehensively diagnosing both morphology and functionality. Since April 2007, the latest PET-CT has been used, and since April 2009 the most advanced SPECT-CT has been used.

New types of radiopharmaceutical agents, which have been developed to go beyond the limit of conventional nuclear medicine, contribute to the diagnosis of diseases. Today, therapeutic drugs (drugs that act on the central nervous system, anticancer drugs, antiarrhythmic drugs) can be labeled, enabling in-vivo kinetics of the drugs administered to individual patients to be evaluated.

Considerations in referring your patients to Nuclear Medicine

We offer consultations to referred outpatients every Monday morning.
Please make appointments and ask your referred patients to bring a referral letter and a set of all the images taken to date with them. We will check whether or not an examination is needed, and make examination appointments as necessary.
First, we will explain to the patients the details of the examination, the fees incurred, and any necessary preparations.


Guide for Visitors
Outpatient consultation days
Monday to Friday
Non-consultation days
Saturdays, Sundays, Holidays
New Year’s Holidays:
Dec. 29 to Jan. 3
Consultation times
First visit: 8:30 am to 11:00 am

First-time visitors to Osaka University Hospital must have a referral from a physician.

Revisit: 8:30 am to 11:30 am
Revisit with appointment: 8:30 am to 3:00 pm

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We cannot answer questions about diseases or treatments by telephone or mail. Please ask in consultation at the hospital.