Arizona Prostate Cancer Center

20601 N. 19th Ave, Suite 115,
Phoenix, AZ 85027
Phone: 602-557-0055

Need Directions?

Patient Forms

Calypso Cancer Treatment

What is Calypso Cancer Treatment?

Calypso's GPS for the Body® technology provides accurate, precise, real-time tracking to keep radiation focused on the tumor, not surrounding healthy tissue. The result? Calypso cancer treatment helps the radiation reach the target to better fight the cancer and patients report experiencing fewer side effects.

Calypso's GPS for the Body® technology enables doctors to localize and track the tumor before and during each prostate radiation treatment. When the tumor moves outside of the field of radiation, therapy can be stopped and the patient is re-positioned to ensure that the tumor, not surrounding healthy tissue, receives the radiation dose. The patient education video provides you with an overview of the importance of monitoring organ motion during radiation therapy delivery.

Watch the video below to learn more about calypso cancer treatment.

Prostate Cancer Radiation Treatment and Organ Motion

If you have prostate cancer and your doctor has prescribed radiation therapy, there are some important things you should know about Calypso cancer treatment. Your organs naturally move during radiation treatment and your doctor cannot predict which way or how much your organs will move. When your organs move during radiation treatments the tumor may not get the right amount of radiation. Other nearby organs may receive radiation that is not meant for them during treatment. Fortunately, the Calypso® System, known to patients as GPS for the Body® technology, and tiny implanted Beacon® electromagnetic transponders can help your doctor know when your prostate is not aligned with the radiation beam during treatment.

Calypso cancer treatment is different from other methods to prepare you for radiation treatment. Calypso cancer treatment uses radiofrequency waves which allow very accurate alignment of your prostate before each treatment session. It can also be used to monitor the position of the prostate at all times during your radiation treatment delivery.

How the Calypso System Works

1. Three tiny Beacon electromagnetic transponders are implanted into your prostate

In an outpatient procedure, similar to a biopsy, Beacon transponders are implanted into your prostate. Each transponder is about as small as a grain of rice.

Three tiny Beacon electromagnetic transponders are implanted into your prostate.


2. The system excites the Beacon electromagnetic transponders

The Beacon transponders communicate with the Calypso System using safe radiofrequency waves.

Activate transponders.


Transponders send signals back.


3. Your prostate is monitored during treatment

The Calypso System shows exactly where the tumor is all the time during your prostate cancer radiation treatment so that the doctor can make quick, important decisions about your care.

A display shows the position of your prostate continuously. When the prostate is out of position, the graphic is color coded to alert the therapist. This is an actual patient record that demonstrates a prostate that has drifted out of alignment by 1 cm (yellow indicates out-of-tolerance).




What is Calypso Cancer Treatment Important?

Radiation therapy for precision treatment of prostate cancer is especially challenging without the correct technology.

The Arizona Prostate Cancer Center offers the latest in linear accelerator technology to assure the right radiation dose is delivered in the most effective and efficient manner.

Calypso (GPS for the Body®) and IGRT (daily image guidance) are two advanced technologies we use in conjunction with IMRT to ensure that the highly tailored treatment that is created by your clinical team is delivered exactly where it is intended with millimeter precision.

Read more about why Calypso cancer treatment and IGRT are important.