Clinical Department & Center

Radiation Oncology


Radiation Oncology specializes in radiation therapy for malignant tumors and various other diseases.  
Along with surgery and chemotherapy, radiation therapy is essential for the treatment of malignant tumors.  
In addition to malignant tumors, we also treat keloid, neurinoma and other benign diseases.
We not only perform standard treatments, but also stereotactic radiosurgery using a linear accelerator (linac). In 1999, we started to perform real-time tumor-tracking radiotherapy, whereby a marker that has been introduced into the body is tracked in real time and a mobile target is irradiated when the marker arrives at the designated place.  
We have also started intensity-modulated radiation therapy (IMRT) ahead of other facilities in Japan.  
Moreover, we have developed the world’s first real-time tumor-tracking proton beam therapy system, and began therapy with this system in March 2014.


Medical care system

We provide medical care to approximately 870 new patients each year. There are 17 beds in our department’s ward, where hospitalized care is provided as needed.

Treatment policy

After consultations, all new cases are discussed at the department’s conferences to decide on treatment policies. We also hold conferences with other departments in the hospital on a regular basis to decide on appropriate treatment policies.

Areas of medical care

The department is divided into the following specialist groups:
  • Central nervous system
  • Head and neck
  • Body trunk
  • Gynecology/breasts
  • Urology

Consultation hours

First-visit reception: 8:30 a.m. – noon on Mondays, Tuesdays and Thursdays
First-visit patients are kindly requested to make an appointment through the Community Service and Welfare Network of our hospital. Patients without an appointment will have to wait longer.
Return-visit reception (by appointment only): 8:30 a.m. – 11:00 a.m. on Mondays, Tuesdays and Thursdays
Concerning emergency irradiation requests, consultations are provide as needed, regardless of the above.

Major tests and equipment

One first real-time tumor-tracking proton beam therapy system, three radiotherapy systems (of which, two are real-time tumor-tracking radiotherapy systems), one CT for therapy planning, one brachytherapy system, and a small shielded source for interstitial irradiation

Medical care results

Annual number of new patients: approx. 870