Patients and relatives can contact short at this point of contact for questions, suggestions and criticism.

+49 (0) 800/ 660 68 00

We are there for you at the following times

Monday to Friday from 8.00 am to 6.00 pm


Franz-von-Rinecker Straße (main entrance)

Schäftlarnstraße 133 (postal address)

81371 München

Do you have any questions?
+49 (0) 89/ 660 680

About us


The RPTC, located in Munich, is the first fully certified European proton radiation center which provides a complete hospital setting for the treatment of cancer tumors.

Our innovative therapeutic procedure involves the use of high-energy proton beams for the treatment of cancer. A key characteristic of these proton beams is that protons facilitate the three-dimensional targeting of tumours; this capability is not available with the x-rays used in conventional radiation therapy. Therefore, highly effective dosages can be delivered to the tumour while the side effects of radiation are reduced by minimizing any trauma to the surrounding healthy tissue.

Questions? +49 (0)89 660 680

Radiotherapy sessions

Radiotherapy sessions (fractions)

Theoretically, tumors could be destroyed with a single dose of radiation, but in reality, the damage that would accrue to healthy tissue prevents this in X-ray therapy. The affected tissue will recover better if radiation treatments are restricted to certain doses at each session. In conventional radiotherapy, radiation is always administered in individual sessions called fractions. The total number of fractions ranges from 4 to 35, usually with one fraction per treatment day. This results in a relatively long total treatment period and may reduce the chance of a cure, because the tumor also recovers between individual sessions.
The reduced burden placed on surrounding healthy tissue by proton therapy enables the number of sessions to be reduced. With Proton Therapy and it’s high precision scanning system the radiation dose absorbed by healthy tissue is only 1/3 to 1/5 of X-ray therapy, allowing an increased effective dose to be administered in no more than 15 total sessions. In practice, however, the number of sessions is set such that the equivalent daily maximum dose of X-ray radiation—both locally and for the entire body--is never exceeded. Your attending physician will let you know how many sessions are planned and how long the full course of treatment will last.
There are some circumstances where the time compression of proton therapy conveys no advantage: for example, if tumor cells and vital healthy tissue are so closely intertwined that the proton beam targets both types of tissue, as occurs with certain brain tumors. When diseased and healthy cells are commingled, the total dose must be distributed across a larger number of individual sessions, similar to X-ray treatment. However, this situation has become a rarity due to the targeting accuracy of the protons.

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