Navigation Links
Iterative reconstruction technique significantly reduces patient radiation dose during CT scans
Date:8/18/2009

Computed tomography (CT) scans are responsible for more than two thirds of the total radiation dose associated with medical imaging exams. However, a newly adapted low-dose technique called adaptive statistical iterative reconstruction (ASIR) may enable radiologists to reduce patient radiation resulting from CT up to 65 percent, according to a study published in the September issue of the American Journal of Roentgenology (AJR).

Iterative reconstruction is a technique that allows radiologists to reduce the noise in an image and improve image quality (like adjusting a TV antenna to make a "fuzzy" image sharper) while significantly reducing the radiation dose.

CT scans using the newly adapted low-dose ASIR method and the standard dose method without ASIR were performed both on a phantom and 12 patients. "We found nearly identical image quality using the reduced dose CT method with ASIR compared with the standard dose CT method without ASIR," said Amy Hara, MD, lead author of the study, performed at the Mayo Clinic Arizona in Scottsdale. "In our study, patient radiation doses were reduced up to 65 percent using the low-dose IR method. The average radiation dose delivered during the low-dose CT with IR was 470 mGy; the average dose delivered using the standard dose CT without IR was 894 mGy," she said.

"Finding a way to reduce radiation dose for routine body CT imaging has been an ongoing concern for many. Our study is significant because it shows that the low-dose ASIR method can significantly decrease the radiation dose along with the many risks associated with radiation exposure. In future studies, it will be important to not only evaluate image quality but to assess diagnostic accuracy. ASIR is new to CT but in our practice it has been very successful," said Dr. Hara.


'/>"/>

Contact: Heather Curry
hcurry@acr-arrs.org
703-390-9822
American Roentgen Ray Society
Source:Eurekalert

Page: 1

Related medicine news :

1. Nfocus Neuromedical Obtains CE Approval for New Vascular Reconstruction Device
2. Risks of Delaying ACL Reconstruction in Young Athletes May Be Too High, Study Shows
3. Park Meadows Cosmetic Surgery, a Pioneer in DIEP Flap Breast Reconstruction Surgery in Colorado, Introduces New, Informative Website
4. Houston Plastic Surgeon Cites ‘Therapeutic' Benefits for Women that Choose Breast Reconstruction After Mastectomy
5. Elbow Ligament Reconstruction Appears Not to Effect Future Professional Advancement in Baseball
6. Elbow ligament reconstruction appears not to effect future professional advancement in baseball
7. Studies evaluate the anatomy and stability of ACL reconstruction with different techniques
8. Growing Preference for Composite Materials in Shoulder Fixation and Knee Ligament Reconstruction Markets
9. Type of breast reconstruction impacts radiation therapy outcomes
10. Wealthy More Likely to Have Breast Reconstruction
11. Two Colorado Surgeons Become Pioneers In Microsurgical DIEP Flap Breast Reconstruction
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:5/3/2016)... , ... May 03, 2016 , ... Boston Children’s Hospital ... rehearse tough medical situations or practice tricky or rare procedures in an environment that ... the SIM Center is also available to inventors and “hackers” to develop and test ...
(Date:5/3/2016)... ... May 03, 2016 , ... Park Cities Pet Sitter ... or adjacent to the 75204, 75205, 75206, 75209, 75219, 75220, 75225, 75229, 75230, 75231 ... Bluffview, Midway Hollow, North Dallas, Plano, Preston Hollow and Park Cities areas of the ...
(Date:5/3/2016)... ... 03, 2016 , ... Intrigma, the leading provider of vital ... expanding its use of Intrigma’s cloud-based physician scheduling solution, Efficient Scheduler (a part ... The Portland, Oregon based health system conducted a one-year pilot of the Efficient ...
(Date:5/3/2016)... ... 2016 , ... Dr. Poneh Ghasri, cosmetic dentist in West Hollywood , ... existing patients. Cosmetic dentistry allows patients to improve the aesthetics of their smiles. These ... minor or more serious cosmetic flaws. These specials allow patients to achieve their dream ...
(Date:5/3/2016)... South Miami, FL (PRWEB) , ... May 03, 2016 , ... ... to support both its Grow & Climb children and youth programs in South Miami. ... for several years. , The Grow Program provides afterschool tutoring, mentoring, enrichment and ...
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)... April 29, 2016 ... Financier Sanofi, leader mondial ... ses résultats pour le premier trimestre ... Jérôme Contamine, commente les résultats du ... perspectives pour le reste de l,année. ...
(Date:4/28/2016)... , April 28, 2016   Click here ... Pharmacy, Inc. (NYSE: DPLO), the nation,s largest independent ... a definitive agreement to acquire Valley Campus Pharmacy, ... ("TNH"), a leading specialty pharmacy that provides individualized ... California . In 2015, TNH generated approximately ...
Breaking Medicine Technology: