Measuring lung motion leads to better radiation treatment for lung cancer

Advances in radiation therapy for cancer have made it possible to fine-tune radiation beams so they match the shape and position of a patient's tumor nearly anywhere in the body. But the pinpoint accuracy of modern radiation treatments would be worthless if the tumor wasn't in the spot where the radiation beams were aimed.

So tumors that move, such as those in the lung which can change position during each breath are a special problem for radiation oncologists. A group at Washington University School of Medicine in St. Louis has studied the way lung tissues move during breathing in hopes of improving radiation as a treatment for lung cancer.

Lung cancer is diagnosed in about 170,000 people in the United States each year. While surgical removal of a malignant tumor is the preferred way to treat lung cancer, surgery may not be feasible if medical conditions make the operation very risky or if the tumor has grown into structures that cannot be removed. In such cases, as long as the cancer has not metastasized, radiation therapy offers a real chance for cure. In addition, radiation therapy is sometimes used to control a tumor that can't be cured to improve a patient's comfort. Studies show that three-dimensional techniques that deliver high doses of radiation in the precise shape of the tumor are more effective than older techniques.

"Ideally, the radiation should be delivered to as small an area as possible so normal tissue near the tumor isn't damaged," says Daniel Low, Ph.D., professor of radiation oncology and director of the Medical Physics Division. "But with a lung tumor, you need to irradiate a larger area if you want to encompass the tumor as it moves. One option to avoid this is to just turn on the radiation beams during a certain phase of the breathing cycle, but that assumes that patients breathe regularly and the tumor returns to the same place with each breath."

On the contrary, Low and his colleagues have found that people's breat

Contact: Gwen Ericson
Washington University School of Medicine

Page: 1 2 3

Related medicine news :

1. Measuring brain activity for emotional markers that may indicate risk for developing alcoholism
2. Measuring proteins in spinal fluid may provide early clue to Alzheimers disease
3. Measuring artery repair cells could become new heart disease test
4. Measuring certain enzyme activity in urine shows promise for detection of bladder cancer
5. Measuring hormone cuts antibiotic use in half in pneumonia patients
6. Measuring enzymes at end of cancer pathway predicts outcome of Tarceva, Taxol
7. USP signs Memorandum of Understanding with the Pharmaceutical Export Promotion Council
8. Repetitive motion speeds nanoparticle uptake
9. Strong emotions in Shakespeares plays lead to fits and fatalities
10. Commodity promotion programs -- Whats the beef?
11. Health professionals should be trained to be wary of pharmaceutical promotion

Post Your Comments:

(Date:10/12/2017)... ... , ... Leading pediatric oncology experts at Children’s National Health System ... of the International Society of Paediatric Oncology (SIOP) Oct. 12-15. Chaired by ... Blood Disorders at Children’s National, and Stephen P. Hunger, M.D., Chief of the ...
(Date:10/12/2017)... Mich. (PRWEB) , ... October 12, 2017 , ... ... has been named one of Michigan’s 2017 Best and Brightest in Wellness® by ... Brightest in Wellness® awards program on Friday, Oct. 20 from 7:30 a.m. to ...
(Date:10/12/2017)... ... October 12, 2017 , ... ... in property taxes a year. In some states—like New York, New Jersey, Massachusetts, ... contrast, many overseas retirement havens have extremely low property-tax rates, which contributes to ...
(Date:10/12/2017)... ... October 12, 2017 , ... Farm Forward joins ... other leading institutions in announcing the launch of the Leadership Circle , ... animals are raised for food. , Founding members of the Leadership Circle also ...
(Date:10/12/2017)... ... 12, 2017 , ... Nvision Biomedical Technologies , a ... addition of industry sales leader, Thomas (Tom) Slott, as Senior Vice President of ... sales network, direct the efforts of the surgical sales teams, manage contractual agreements, ...
Breaking Medicine News(10 mins):
(Date:10/2/2017)... , Oct. 2, 2017  AllianceRx Walgreens Prime, the ... by Walgreens and pharmacy benefit manager Prime Therapeutics LLC ... brand, which included the unveiling of new signage at ... as well as at a few other company-owned facilities ... brand to patients, some of whom will begin to ...
(Date:9/28/2017)... Hill-Rom Holdings, Inc. (NYSE: HRC), will host its fiscal ... Friday, November 3, 2017, beginning at 7:00 a.m. (CDT) ... a.m. (CDT) / 9:30 a.m. (EDT). In ... guidance for 2018, Hill-Rom executives will also highlight the ... long-range financial outlook through 2020. ...
(Date:9/27/2017)... and NEW YORK , Sept. 27, 2017 ... mobile health and big data solutions, today announced that its MyDario product ... check your local TV listings for when The Dr. Oz Show airs ... The ... this month. ...
Breaking Medicine Technology:
Cached News: