Navigation Links
Radiation dose level affects size of lesions seen on chest CT images
Date:4/16/2013

The estimated size of chest lymph nodes and lung nodules seen on CT images varies significantly when the same nodes or nodules are examined using lower versus higher doses of radiation, a new study shows. The size of lymph nodes and lung nodules is an important determinant of treatment and treatment success.

The study, conducted at Massachusetts General Hospital in Boston, used a 3D image processing tool to quantitatively measure the volume of the lymph nodes and lung nodules. "We found that lymph node volumes were estimated at 30% lower in five cases and 10% higher in 15 cases of low dose compared to higher dose images," said Dr. Beth Vettiyil, a lead author of the study. The study found that the calculated volume of lung nodules was 46% lower in nine cases and 34% higher in 10 cases on lower dose as compared to high dose images.

"We were surprised that in both the lymph nodes and lung nodules there were cases in which the lower dose picked up lower lesion volumes as well as higher lesion volumes when compared to the higher dose scans," said Dr. Vettiyil. "We think that increased image noise (graininess of the image) on the lower dose scans may have caused the lesion volumes to vary so significantly," she said.

The goal of the study was to explore the possibility of using image processing tools to better delineate lesions at low radiation doses without missing any clinical information, noted Dr. Vettiyil. "The study indicates that radiologists can use these types of quantitative tools to supplement them in their measurements, but the use of such software measurements without the radiologist's clinical correlation might not be advisable at this stage," said Dr. Vettiyil.

The study will be presented April 17 during the ARRS Annual Meeting in Washington, DC.


'/>"/>

Contact: Samantha Schmidt
sschmidt@arrs.org
703-858-4316
American Roentgen Ray Society
Source:Eurekalert

Page: 1

Related medicine news :

1. Antibody therapy prevents gastrointestinal damage following radiation exposure in mice
2. Diagnostic Scans Tied to Radiation Risk for Gastro Patients
3. CT Scans Deliver More Radiation to Obese People: Study
4. Intensity Modulated Radiation Therapy optimal for localized prostate cancer
5. Study examines adverse effects among different radiation therapies for prostate cancer
6. Chemo + Radiation Best for Bladder Cancer, Study Finds
7. Use of dedicated pediatric imaging departments for pediatric CT reduces radiation dose
8. APBI associated with more mastectomies, toxicities, complications, compared to traditional radiation
9. Cone beam CT proves better for visualizing some causes of hearing loss at half the radiation dose
10. Highly targeted irradiation as good as whole breast radiotherapy in early stage cancer
11. Novel biomarkers reveal evidence of radiation exposure
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:6/26/2016)... ... June 26, 2016 , ... PawPaws brand pet supplements owned by ... to enhance the health of felines. The formula is all-natural and is made from ... the PawPaws Cat Kidney Support Supplement Soft Chews are Astragalus Root Extract ...
(Date:6/26/2016)... Lake Orion, Clarkston, Michigan (PRWEB) , ... June ... ... direction with respect to fertility once they have been diagnosed with endometriosis. These ... tolerable intercourse but they also require a comprehensive approach that can help for ...
(Date:6/25/2016)... ... June 25, 2016 , ... Austin residents seeking Mohs surgery services, can ... Surgery and to Dr. Russell Peckham for medical and surgical dermatology. , Dr. Dorsey ... cancer. The selective fellowship in Mohs Micrographic Surgery completed by Dr. Dorsey was under ...
(Date:6/25/2016)... Aliso Viejo, California (PRWEB) , ... June 25, 2016 , ... ... preset to fit their specific project," said Christina Austin - CEO of Pixel Film ... all fully customizable and all within Final Cut Pro X . Simply select ...
(Date:6/25/2016)... ... June 25, 2016 , ... As a lifelong Southern Californian, ... and his M.D from the David Geffen School of Medicine at UCLA. He trained ... Angeles to complete his fellowship in hematology/oncology at the UCLA-Olive View-Cedars Sinai program where ...
Breaking Medicine News(10 mins):
(Date:6/24/2016)... Dublin ... of the " Global Markets for Spectroscopy Equipment" ... This report focuses on the global ... including its applications in various applications. The report deals ... three main industries: pharmaceutical and biotechnology, food and beverage, ...
(Date:6/24/2016)... CLEMENTE, Calif. , June 24, 2016  American Respiratory Labs ... company, is now able to perform sophisticated lung assessments in patients, ... Technologies , Inc. Patients are no longer limited ... ndd,s EasyOne PRO ® , ARL patients like Jeanne R. of ... done in the comfort of her own home. ...
(Date:6/24/2016)... , June 24, 2016 ... appointment of Dr. Edward Futcher to ... Director, effective June 23, 2016.Dr. Futcher was also ... and Governance Committees.  As a non-executive member of ... expertise and strategic counsel to VolitionRx in connection ...
Breaking Medicine Technology: