Clinics & Departments

Radiation Oncology

Our TreatmentsFeatures of the DepartmentDoctors and Staff

Our Treatments

The Department of Radiation Oncology provides radiotherapy for all cancers except for primary brain tumors and pediatric tumors, in cooperation with other departments. To provide accurate and safe radiotherapy, we work as a team consisting of radiologists, radiology technicians, nurses, medical physicists and other staffs.

We provide external beam radiation therapy from Linac, and also brachytherapy for cervical and prostate cancer.

To receive the radiotherapy at our hospital, please first visit the outpatient clinic of organ-specific department. Upon your first visit, please bring a referral letter and all relevant medical records including CT or MRI images, and pathological specimens.


Radiotherapy, as well as surgery and chemotherapy, plays an important role in cancer treatment. It is widely used in curative treatment and also in palliative treatment.

To reduce or eliminate cancer cells, radiation (X-rays, gamma-rays, or electron beams) is delivered from outside the body to the lesion and the targeted surrounding area. Main advantages of radiotherapy is to preserve the function and shape of organs with fewer side effects.

We provide individually customized radiotherapy plan, taking in consideration of the type of cancer, the degree of cancer progression, the condition of the patient, and his/her request concerning treatment. To deliver accurate and safe radiotherapy, we go through the following procedures: determine the best method of the customized treatment, quality assurance for the treatment planning, delivery of radiotherapy and medical care during and after the treatment.

Multidisciplinary Treatment

Early stage cancer is sometimes treated with radiotherapy alone, but in case of advanced cancer, radiotherapy in combination with surgery or chemotherapy will provide better therapeutic effect.

Depending on the patients’ condition, we choose the appropriate timing of the radiotherapy in combination with other treatments: simultaneously with/before/after chemotherapy, or before/after surgery.

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Features of the Department

Cooperation with Other Departments

We work closely with other departments such as the Thoracic Center, the Gastroenterology Center, the Breast Oncology Center, the Department of Gynecologic Oncology and the Department of Genitourinary Oncology. We determine the treatment plan for each patient in cooperation with doctors in those departments.

Multidisciplinary Treatment

Depending on the disease condition, we provide treatment which focus on preservation of the shape and the functionality of organs by combining radiotherapy and chemotherapy.

We provide preoperative or postoperative radiotherapy for breast, head and neck, rectal, esophageal or musculoskeletal cancer.

Treatment with Fewer Side Effects

We use three-dimensional radiotherapy and intensity-modulated radiotherapy (IMRT) technique for various types of cancer to reduce side effects and to accurately deliver radiation to the lesions. In addition, we also provide the following treatments to minimize unnecessary radiation to healthy organs as much as possible.

  • Stereotactic body radiation therapy (pinpoint irradiation) for small lung cancer
  • Brachytherapy (intracavitary irradiation) using RALS

Treatment for Pain Relief

Radiotherapy is very effective to relieve cancer pain. We provide radiotherapy to bone metastases, brain metastases, and so on.

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