ARRS: Adaptive Image Filters Lower CT Radiation Dose

They are also associated with improved image quality for chest, abdominal scans
By Monica Smith
HealthDay Reporter

TUESDAY, May 4 (HealthDay News) -- Use of adaptive image filters in computed tomography (CT) scans of the chest and abdomen allow radiologists to lower the radiation levels associated with these scans and improve image quality, according to research presented at the annual meeting of the American Roentgen Ray Society, held from May 2 to 7 in San Diego.

Sarabjeet Singh, M.D., of the Massachusetts General Hospital in Boston, and colleagues performed CT scans of the chest and abdomen at four different levels of radiation in 12 patients in a prospective clinical study to assess the effect of processing films with two-dimensional nonlinear adaptive image filters.

The researchers found that quantitative image noise in post-processed low-dose abdomen and chest CT images was significantly lower than in low-dose unprocessed abdomen and chest images, and that image filters were associated with improved subjective noise for both chest and abdomen CT images regardless of radiation dose. Eighteen lesions visualized -- most smaller than 1 cm -- were seen on both processed and unprocessed CT exams. In addition, the authors observed no significant differences between CT numbers, conspicuity of lesions, or visibility of small structures between the two types of CT images.

"Regardless of radiation dose, post processing with image filters improved subjective noise for both chest and abdominal CT and helped lower the CT radiation dose levels for chest by up to 40 mAs and for the abdominal CT by up to 100 mAs," said Singh in a statement.

A co-author is the recipient of funding from GE Healthcare.

Press Release
More Information

Copyright © 2010 HealthDay. All rights reserved.

Powered by

jQuery UI Accordion - Default functionality

For life-long learning and continuing professional development, come to Lippincott's NursingCenter.

Nursing Jobs Plus
Featured Jobs
Recommended CE Articles

Blunt Chest Trauma
Journal of Trauma Nursing, November/December 2014
Expires: 12/31/2016 CE:2 $21.95


The School Age Child with Congenital Heart Disease
MCN, The American Journal of Maternal/Child Nursing, January/February 2015
Expires: 2/28/2017 CE:2.5 $24.95


Understanding multiple myeloma
Nursing Made Incredibly Easy!, January/February 2015
Expires: 2/28/2017 CE:2 $21.95


More CE Articles

Subscribe to Recommended CE

Recommended Nursing Articles

Comprehensive Care: Looking Beyond the Presenting Problem
Journal of Christian Nursing, January/March 2015
Free access will expire on March 2, 2015.


Pain and Alzheimer dementia: A largely unrecognized problem
Nursing Made Incredibly Easy!, January/February 2015
Free access will expire on February 16, 2015.


Glycemic control in hospitalized patients
Nursing2015 Critical Care, January 2015
Free access will expire on February 16, 2015.


More Recommended Articles

Subscribe to Recommended Articles

Evidence Based Practice Skin Care Network NursingCenter Quick Links What’s Trending Events