HOME >> MEDICINE >> NEWS
Novel MRI technique provides clear images of blood flow

acts often looked like pulsating spots of light.

"When we looked into it further, we found that these artifacts occurred in 5 to 10 percent of the scans," Judd explained. "After more research into the phenomenon, we decided to try to harness the effect rather than get rid of it."

As it turned out, the strange images appeared whenever a blood vessel ran perpendicular to the plane of the scan. So the researchers rotated the scanner, adjusted the radiofrequency of the scanner and developed a complex new way of capturing the images.

"As the blood cell flows through the plane, it is excited by the MRI," Judd explained. "While the next cell is also excited when it flows through, the first cell still gives off a radio-frequency signal that we can detect, on so on. We receive a continuous image of the blood flow."

The blood remains "excited" for about 13 centimeters from the point of excitation, Judd said.

For Judd, the new approach gives clear three-dimensional information on two important aspects of cardiovascular disease -- the actual anatomy of the vessel, as well as the speed and direction of blood flow.

"Information on flow is important because anatomy and function are not always related," he explained. "In one patient, a 70 percent blockage of an artery may hinder blood flow enough to cause cell death, while in the next patient, due to subtle differences in the three-dimensional shape and length of the blockage, there may not be the same problem."

The current studies were performed on the aortas of human volunteers. The aorta was chosen for the initial studies because it is one of the largest vessels in the body and it is easily accessible.

Judd sees one of the immediate uses of the new technique on the renal arteries. Constrictions in the renal arteries are common causes of hypertension, and since the new technique does not use contrast agents, patients should be able to better tolerate the procedure, J
'"/>

Contact: Richard Merritt
merri006@mc.duke.edu
919-684-4148
Duke University Medical Center
4-Apr-2004


Page: 1 2 3 4

Related medicine news :

1. Novel therapy tested in mice could chase away cat allergies
2. Novel antibiotic shows promise in shortening treatment duration of tuberculosis
3. Novel p53 gene-based therapy boosts immune system and reduces tumor size
4. Novel drugs help solve Gleevec resistance
5. Novel imaging technique shows abnormal brain anatomy in children with ADHD
6. Novel drug-antidote strategy provides greater control of drug action
7. Novel imaging technique shows lymph nodes, metastases in breast cancer without surgery
8. Novel delivery method for nutrients wins Kaye Innovation Award for Hebrew university students
9. Novel vitamin discovery offers clues for cancer chemotherapy and lipid disorders
10. Novel findings about neovessel formation
11. Novelty-seeking teens may be more easily influenced by tobacco advertisements

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:9/1/2020)... MESA, Calif. (PRWEB) , ... September 01, 2020 , ... ... the “safe side”, the Cohn Health Institute has taken this time to ... In celebration of its 30th Anniversary, the Cohn Health Institute will be relaunching its ...
(Date:8/31/2020)... ... August 31, 2020 , ... ... organization devoted exclusively to funding innovative lymphoma research and serving the lymphoma community ... today announced the 10th Anniversary of Blood Cancer Awareness Month (BCAM) and its ...
(Date:8/31/2020)... (PRWEB) , ... August 31, 2020 , ... Want to ... 1, Cerebral Palsy Alliance Research Foundation (CPARF) is thrilled to launch its fourth annual ... research. A fully virtual challenge, STEPtember meets everyone wherever they are at this moment ...
(Date:8/31/2020)... Calif. (PRWEB) , ... August 31, 2020 , ... ... of business support services to dental groups in the United States, today announced ... the community of Beaumont, CA. , Patients will enjoy convenient hours, a ...
(Date:8/31/2020)... ... ... In an effort to give back to the community in which it serves, ... with a special new rate code to benefit children and families at Ronald ... will be applied to any room type, any time, now through the end of ...
Breaking Medicine News(10 mins):
(Date:8/31/2020)... AVIV, Israel (PRWEB) , ... August 31, 2020 ... ... to specialize in wellness-related technologies, today announced that they have invested $400,000 in ... competition that ran in collaboration with the Global Wellness Institute (GWI). , ...
(Date:8/28/2020)... ... August 28, 2020 , ... Cano Health, ... centers in Florida and San Antonio is happy to announce that it has ... , In this capacity he will serve as community advisor, advertising talent, and ...
(Date:8/27/2020)... AUSTIN, Texas (PRWEB) , ... August 27, 2020 , ... ... Central Texas – is pleased to announce Dr. David Szalay, DDS, MD, has joined ... to treat patients in the new Pflugerville office, which is scheduled to open this ...
Breaking Medicine Technology:
Cached News: