JIVROSG is a clinical trials organization established in 2002 from the parent organization of the “Research Group for the Standardization of Interventional Radiology Indications and Techniques for Cancer Treatment,” which is funded by a Grant-in-Aid for Cancer Research from the Ministry of Health, Labour and Welfare. Interventional radiology (IR) involves minimally invasive treatments in which small instruments are placed through the skin using imaging guidance without open surgery. Our group scientifically evaluates the applications of IR for cancer treatment via clinical trials. Our activities are aimed to develop better treatments and to standardize treatment methods.

Group representative
Yasuaki Arai, M.D.
(Director of the Department of Diagnostic Radiology, National Cancer Center)

Interventional Radiology (IR)

IR uses diagnostic imaging such as x-ray and ultrasound to see inside a person’s body and to help the doctor guide special instruments. These instruments are inserted into the body through a small opening in the skin and treatment is performed. IR treatment involves minimal burden to the body (minimal invasiveness) compared to treatment with open surgery. Open surgery involves a large incision, allowing treatment by direct observation of the abnormal tissue. The word “radiology” is used because diagnostic imaging technology is used. However, IVR is performed with a focus on treatment and it differs greatly from conventional radiology performed for diagnosis. Beginning in the 1980s, the use of IVR has grown worldwide. Japan is one of the non-Western countries in which its use has become just as prevalent as in Western countries.

Clinical Trials

It is necessary to determine whether or not new treatment methods are truly beneficial to the patients even if such methods were devised to improve on conventional treatments. Therefore, such treatments must be used in actual clinical settings to scientifically examine and evaluate their beneficial effects, safety, and adverse effects from various perspectives. A clinical trial is a medical activity for research purposes, and it is distinct from general medical practice in which established standard treatments are performed.

JIVROSG Administrative Office
Department of Diagnostic Radiology, National Cancer Center
5-1-1 Tsukiji, Chuo-ku, Tokyo 104-0045, Japan