Featured Research

from universities, journals, and other organizations

Balloon mis-positioning during prostate cancer treatment could affect success of radiation delivery

Date:
November 12, 2013
Source:
University of Colorado Cancer Center
Summary:
Researchers show that mis-positioning of endorectal balloon during prostate cancer radiation may affect treatment success.

A University of Colorado Cancer Center study recently published in the journal Physics in Medicine and Biology shows that endorectal balloons commonly used during precise radiation treatment for prostate cancer can deform the prostate in a way that could make radiation miss its mark.

Related Articles


"Use of a balloon allows you to stabilize the anatomy. But what we show is that imprecision with balloon placement could reduce radiation dose coverage over the intended area," says Moyed Miften, PhD, FAAPM, investigator at the CU Cancer Center and chief physicist at the University of Colorado School of Medicine Department of Radiation Oncology.

Specifically, Miften and colleagues including Bernard Jones, Gregory Gan, and Brian Kavanagh studied the technique known as stereotactic body radiation, in which powerful, precisely-targeted radiation is delivered only to cancerous areas of the prostate with the hope of killing tumor tissue. An endorectal balloon is needed to hold the prostate in place while this high dose is delivered. The study used 71 images of 9 patients to show an average endorectal balloon placement error of 0.5 cm in the inferior direction. And these placement errors led to less precise radiation targeting and to uneven radiation dose coverage over cancerous areas.

"In radiation oncology, we use a CT scan to image a patient's prostate and then plan necessary treatment. But if during treatment the prostate doesn't match this planning image, we can deliver an imprecise dose," Miften says.

With the use of endorectal balloon, Miften and colleagues found prostates could be slightly pushed or squeezed, resulting in the prostate deforming slightly from its original shape and also sometimes tilting slightly from its original position in the body. These deformations can push parts of the prostate outside the area reached by the planned radiation.

"What we see is that whether or not a clinician chooses to use an endorectal balloon along with stereotactic body radiation for prostate cancer, it's essential to perform the procedure with image guidance. The key is acquiring images immediately prior to treatment that ensure the anatomy matches the planning CT," Miften says.


Story Source:

The above story is based on materials provided by University of Colorado Cancer Center. Note: Materials may be edited for content and length.


Journal Reference:

  1. Bernard L Jones, Gregory Gan, Brian Kavanagh, Moyed Miften. Effect of endorectal balloon positioning errors on target deformation and dosimetric quality during prostate SBRT. Physics in Medicine and Biology, 2013; 58 (22): 7995 DOI: 10.1088/0031-9155/58/22/7995

Cite This Page:

University of Colorado Cancer Center. "Balloon mis-positioning during prostate cancer treatment could affect success of radiation delivery." ScienceDaily. ScienceDaily, 12 November 2013. <www.sciencedaily.com/releases/2013/11/131112123327.htm>.
University of Colorado Cancer Center. (2013, November 12). Balloon mis-positioning during prostate cancer treatment could affect success of radiation delivery. ScienceDaily. Retrieved March 5, 2015 from www.sciencedaily.com/releases/2013/11/131112123327.htm
University of Colorado Cancer Center. "Balloon mis-positioning during prostate cancer treatment could affect success of radiation delivery." ScienceDaily. www.sciencedaily.com/releases/2013/11/131112123327.htm (accessed March 5, 2015).

Share This


More From ScienceDaily



More Health & Medicine News

Thursday, March 5, 2015

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Adults Only Get The Flu Twice A Decade, Researchers Say

Adults Only Get The Flu Twice A Decade, Researchers Say

Newsy (Mar. 4, 2015) Researchers found adults only get the flu about once every five years. Scientists analyzed how a person&apos;s immunity builds up over time as well. Video provided by Newsy
Powered by NewsLook.com
New Hormone Could Protect Against Diabetes And Weight Gain

New Hormone Could Protect Against Diabetes And Weight Gain

Newsy (Mar. 4, 2015) A newly discovered hormone mimics the effects of exercise, protecting against diabetes and weight gain. Video provided by Newsy
Powered by NewsLook.com
Mount Everest Has a Poop Problem

Mount Everest Has a Poop Problem

Buzz60 (Mar. 4, 2015) With no bathrooms to use, climbers of Mount Everest have been leaving human waste on the mountain for years, and it&apos;s becoming a health issue. Mike Janela (@mikejanela) has more. Video provided by Buzz60
Powered by NewsLook.com
The Best Tips to 'Skinny' Your Home

The Best Tips to 'Skinny' Your Home

Buzz60 (Mar. 4, 2015) If you&apos;re looking to reach your health goals this season, there are a few simple tips to help you spring clean your space and improve your nutrition. Krystin Goodwin (@krystingoodwin) has the skinny on keeping a healthy home. Video provided by Buzz60
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:

Strange & Offbeat Stories


Health & Medicine

Mind & Brain

Living & Well

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins