Featured Research

from universities, journals, and other organizations

Promising New Imaging Technology Precisely Tracks Lung Tumor Motion

Date:
October 5, 2004
Source:
University Of Pittsburgh Medical Center
Summary:
A new imaging technology may more precisely track tumor movement for patients under treatment for lung cancer than conventional 3D imaging. Results presented indicate that the new technology, 4D CT, or four-dimensional computed tomography, may allow radiation oncologists to determine and predict tumor movement based on the tumor's location in near real time.

ATLANTA, Oct. 4 – According to a study presented today by a University of Pittsburgh researcher at the 46th Annual Meeting of the American Society for Therapeutic Radiology and Oncology (ASTRO) in Atlanta, a new imaging technology may more precisely track tumor movement for patients under treatment for lung cancer than conventional 3D imaging. Results presented indicate that the new technology, 4D CT, or four-dimensional computed tomography, may allow radiation oncologists to determine and predict tumor movement based on the tumor's location in near real time.

"One of the major challenges in treating lung tumors with radiation is precisely targeting a moving tumor while simultaneously decreasing the amount of healthy tissue that may be exposed," said Dwight Heron, M.D., assistant professor of radiation oncology, University of Pittsburgh School of Medicine and vice chairman of radiation oncology, University of Pittsburgh Medical Center (UPMC) and study co-author. "Lung tumors are akin to moving targets. As a patient inhales and exhales, the tumor moves, making it challenging to target the tumor and to avoid exposure of radiation to the area that surrounds the tumor. By being able to predict tumor movement based on its location and attachment to the lung, we have the ability to more precisely target tumors with radiation therapy."

In the study, lung tumor motion was measured in 12 patients based on multiple images provided by 4D CT. Images were then sorted according to the phase of the respiratory cycle in which the image was acquired. Findings indicated that tumor motion correlated significantly with the position of the tumor on the lungs – tumors that moved more than 5 mm were located in the lower lobes of the lungs and those that moved the most were attached to the posterior, or back, of the lungs. Findings also indicated that tumors that were extensively attached to the chest wall or major airway moved the least.

"This technology is promising because it may improve our ability to develop more precise treatment plans for the delivery of radiation therapy to lung cancer patients and ensure the tumor receives the full amount of the treatment dose possible," said Dr. Heron. The technology was developed by GE Medical Systems.

"The better we understand lung tumor motion, the better radiation oncologists can plan radiotherapy treatments and track changes in lung tumors that might affect the efficacy of the treatment," said Edward Brandner, Ph.D., medical physicist at UPMC and co-author of the study.

The study's co-authors included Edward Brandner, Ph.D.; Andrew Wu, Ph.D.; Hungcheng Chen, M.S.; and Steven Burton, M.D., department of radiation oncology at the University of Pittsburgh; and Shalom Kalnicki, M.D., now of the department of radiation oncology, Montefiore Medical Center, New York.


Story Source:

The above story is based on materials provided by University Of Pittsburgh Medical Center. Note: Materials may be edited for content and length.


Cite This Page:

University Of Pittsburgh Medical Center. "Promising New Imaging Technology Precisely Tracks Lung Tumor Motion." ScienceDaily. ScienceDaily, 5 October 2004. <www.sciencedaily.com/releases/2004/10/041005074303.htm>.
University Of Pittsburgh Medical Center. (2004, October 5). Promising New Imaging Technology Precisely Tracks Lung Tumor Motion. ScienceDaily. Retrieved July 30, 2014 from www.sciencedaily.com/releases/2004/10/041005074303.htm
University Of Pittsburgh Medical Center. "Promising New Imaging Technology Precisely Tracks Lung Tumor Motion." ScienceDaily. www.sciencedaily.com/releases/2004/10/041005074303.htm (accessed July 30, 2014).

Share This




More Health & Medicine News

Wednesday, July 30, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Health Insurers' Profits Slide

Health Insurers' Profits Slide

Reuters - Business Video Online (July 30, 2014) Obamacare-related costs were said to be behind the profit plunge at Wellpoint and Humana, but Wellpoint sees the new exchanges boosting its earnings for the full year. Fred Katayama reports. Video provided by Reuters
Powered by NewsLook.com
Concern Grows Over Worsening Ebola Crisis

Concern Grows Over Worsening Ebola Crisis

AFP (July 30, 2014) Pan-African airline ASKY has suspended all flights to and from the capitals of Liberia and Sierra Leone amid the worsening Ebola health crisis, which has so far caused 672 deaths in Guinea, Liberia and Sierra Leone. Duration: 00:43 Video provided by AFP
Powered by NewsLook.com
At Least 20 Chikungunya Cases in New Jersey

At Least 20 Chikungunya Cases in New Jersey

AP (July 30, 2014) At least 20 New Jersey residents have tested positive for chikungunya, a mosquito-borne virus that has spread through the Caribbean. (July 30) Video provided by AP
Powered by NewsLook.com
Generics Eat Into Pfizer's Sales

Generics Eat Into Pfizer's Sales

Reuters - Business Video Online (July 29, 2014) Pfizer, the world's largest drug maker, cut full-year revenue forecasts because generics could cut into sales of its anti-arthritis drug, Celebrex. Fred Katayama reports. Video provided by Reuters
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:
from the past week

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