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:5/3/2016)... Monica, CA (PRWEB) , ... May 03, 2016 , ... ... the highest quality medical providers to build the leading network of doctors and therapists ... Eric Nepomnaschy, D.C., founder of the distinguished Bay Chiropractic and Rehabilitation in ...
(Date:5/3/2016)... ... May 03, 2016 , ... SELEX (systematic evolution ... from a random library of sequences depending on their attraction for a target ... SELEX selection is commonly performed using filters, panning, or affinity chromatography separations. However, ...
(Date:5/3/2016)... FL (PRWEB) , ... May 03, 2016 , ... ... leading innovative specialty pharmacies, will be represented at the 2016 Asembia Specialty ... Vegas. The Asembia Summit is the largest U.S. health care conference for the ...
(Date:5/3/2016)... ... May 03, 2016 , ... Boston Children’s Hospital today announced its ... situations or practice tricky or rare procedures in an environment that looks and feels ... is also available to inventors and “hackers” to develop and test new devices or ...
(Date:5/3/2016)... ... May 03, 2016 , ... ... announces Benefits Alliance Insurance Services as the latest addition to its elite stable ... comprised of Partners Wayne Blasman, David Styles, and Paul Vincent. The Firm is ...
Breaking Medicine News(10 mins):
(Date:4/29/2016)... April 29, 2016  In the next ten ... shift from systems dependent on CRTs monitors to those ... modality CRT Medical monitors and will automatically sync ... host of foreseeable benefits to this technological advancement, ... modalities have to be replaced in order to ...
(Date:4/29/2016)... 29, 2016 Glycotope GmbH, a ... announces the appointment of Dr. Alfredo Zurlo ... an oncologist with many years clinical experience and a ... His last role was at Mologen AG where he ... Board. Previously Dr. Zurlo held various positions at F ...
(Date:4/28/2016)... April 28, 2016 Research and ... Plastic Surgery Products Market 2016-2020" report to their ... , The global plastic surgery products market ... during the period 2016-2020. , ,The growing adoption of ... the growth of the market. Lasers are used to ...
Breaking Medicine Technology: