Radiologists find a technique to significantly reduce patient radiation dose during CT angiography
September 21, 2009Radiologists have discovered that prospective electrocardiogram (ECG) gating allows them to significantly reduce the patient radiation dose delivered during computed tomography (CT) angiography, a common noninvasive technique used to evaluate vascular disease, according to a study published in the October issue of the American Journal of Roentgenology (AJR).
The study, performed at the Medical College of Wisconsin, compared the use of retrospective ECG gating (when the radiation beam is on constantly) and prospective ECG gating (when the radiation beam is turned on only intermittently) during CT angiography.
Forty patients were evaluated using retrospective gating and 40 more were evaluated using prospective gating. "In comparison, image quality was equivalent," said W. Dennis Foley, MD, lead author of the study. "In regards to radiation dose, the dose was three times higher with retrospective gating," he said. The radiation dose using prospective gating was approximately 14 mSv compared to 43.3 mSv using retrospective gating.
"Radiation exposure continues to be a concern during CT procedures. However our study is significant because it shows radiologists are able to significantly decrease the radiation dose delivered to the patient during CT angiography," said Dr. Foley.
"Prospective ECG-gated CT angiography is a technically robust, noninvasive imaging technique for the evaluation of vascular disease. It is safer than conventional angiography and the patient benefits from having it done intravenously rather than through the arteries," he said.
Source: American Roentgen Ray Society
-
Radiation dose drastically reduced during whole chest MDCT
Jun 24, 2009 |
not rated yet |
0
-
Researchers find a way to reduce patient radiation dose during pulmonary CT angiography
Jun 30, 2009 |
not rated yet |
0
-
Radiation dose can be reduced for 'triple rule-out' coronary CT angiography
Apr 03, 2009 |
not rated yet |
0
-
Angled gantry technique reduced breast radiation exposure by 50 percent
Dec 04, 2008 |
not rated yet |
0
-
Low-dose CT method, delivering 50 percent less radiation, correctly identifies patients with appendicitis
Jul 22, 2009 |
not rated yet |
0
-
Engineers build first sub-10-nm carbon nanotube transistor
Feb 01, 2012 |
4.9 / 5 (32) |
30
-
Something old, something new: Evolution and the structural divergence of duplicate genes
Jan 31, 2012 |
4.6 / 5 (7) |
1
-
The hidden nanoworld of ice crystals: Revealing the dynamic behavior of quasi-liquid layers
Jan 30, 2012 |
5 / 5 (4) |
1
-
Stock market network reveals investor clustering
Jan 27, 2012 |
3.9 / 5 (23) |
8
-
Of microchemistry and molecules: Electronic microfluidic device synthesizes biocompatible probes
Jan 26, 2012 |
5 / 5 (2) |
0
-
Classical and Quantum Mechanics via Lie algebras
Apr 15, 2011
- More from Physics Forums - Independent Research
More news stories
Starve a virus, feed a cure? Findings show how some cells protect themselves against HIV
A protein that protects some of our immune cells from the most common and virulent form of HIV works by starving the virus of the molecular building blocks that it needs to replicate, according to research published online ...
16 minutes ago |
not rated yet |
0
|
Injured boomers beware: Know when to see doctor
(AP) -- It happened to nurse Jane Byron years after an in-line skating fall, business owner Haralee Weintraub while doing "men's" push-ups, and avid cyclist Gene Wilberg while lifting a heavy box.
1 hour ago |
not rated yet |
0
FDA-approved drug rapidly clears amyloid from the brain, reverses Alzheimer's symptoms in mice
Neuroscientists at Case Western Reserve University School of Medicine have made a dramatic breakthrough in their efforts to find a cure for Alzheimer's disease. The researchers' findings, published in the journal Science, show t ...
Medicine & Health / Neuroscience
Feb 09, 2012 |
4.9 / 5 (54) |
21
|
Green tea found to reduce disability in the elderly
(Medical Xpress) -- A lot of research has been done over the past several years looking into the health benefits of green tea. As a result, scientists have found that regular consumption of the beverage leads ...
Feb 07, 2012 |
4.4 / 5 (14) |
11
|
Teen school drop-outs three times as likely to be on benefits in later life
Teen school drop-outs are almost three times as likely to be on benefits in later life as their peers who complete their schooling, indicates research published online in the Journal of Epidemiology and Community Health.
Feb 06, 2012 |
not rated yet |
13
Scientists discover molecular secrets of 2,000-year-old Chinese herbal remedy
For roughly two thousand years, Chinese herbalists have treated Malaria using a root extract, commonly known as Chang Shan, from a type of hydrangea that grows in Tibet and Nepal. More recent studies suggest that halofuginone, ...
New method to examine batteries -- MRI from the inside
There is an ever-increasing need for advanced batteries for portable electronics, such as phones, cameras, and music players, but also to power electric vehicles and to facilitate the distribution and storage of energy derived ...
A mitosis mystery solved: How chromosomes align perfectly in a dividing cell
Although the process of mitotic cell division has been studied intensely for more than 50 years, Whitehead Institute researchers have only now solved the mystery of how cells correctly align their chromosomes during symmetric ...
Researchers find extensive RNA editing in human transcriptome
In a new study published online in Nature Biotechnology, researchers from BGI, the world's largest genomics organization, reported the evidence of extensive RNA editing in a human cell line by analysis of RNA-seq data, demons ...
The proteins ensuring genome protection
Researchers from the University of Geneva (UNIGE), Switzerland, have discovered the crucial role of two proteins in developing a cell 'anti-enzyme shield'. This protection system, which operates at the level of molecular ...
Iran blocks email, restricts net access: reports
Iran has further restricted access to the Internet and blocked popular email services for the past few days, in a move a top lawmaker said could "cost the regime dearly," media reports said on Sunday.
