Oral and Maxillofacial Radiology

At the Oral and Maxillofacial Radiology the image diagnosis and the radiation therapy are performed. The diagnostic imaging includes MRI, cone-beam CT, multi-detector CT, US, and digital subtraction angiography. In the radiation therapy section IMRT with IGRT is used for the oral cancer patients.

Vice HeadTadashi SASAI
Chief of Outpatient ClinicTadashi SASAI
Chief of Inpatient WardTomomi TSUJIMOTO

■Contents of radiology clinic

1)Diagnostic imaging for head and neck region

 All images including from a dental radiography to MRI are digitalized and archiveid in DICOM format. And the all images are sent to each clinical division as soon as a patient is scanned.In the CT and MRI the contrast enhacing technique is adapted to improve the image contrast.

2)Intensity-modulated radiation therapy for oral cancer

 Intensity-Modulated Radiation Therapy (IMRT) is an advanced type of high-precision radiation. Computercontrolled x-ray accelerators distribute precise radiation doses to malignant tumors or specific areas within the tumor. The pattern of radiation delivery is determined using highly-tailored computing applications to perform optimization and treatment simulation. We started the radiation therapy by IMRT.

 IMRT also improves the ability to conform the treatment volume
to concave tumor shapes, for example when the tumor is wrapped
around a vulnerable structure such as the spinal cord (red arrow).


 64-row multi-detector CT machine was installed in 2010 January and it contributes on reducing the radiation dosage and examination time. In one second we can obtain 192 silices with a high resolution.

 Radiotherapy machine in the state-of-the-art world was installed in May 2010 for the first time in the dental field. This machine enables the intensity modulated and image guided radiation therapy. It will result in the good outcomes and preventing the side effect in the radiation therapy for the oral cancer.

64-row multi-detector CT
Radiation therapy machine with IMRT
and IGRT