Navigation Links
A better sign of blood vessel narrowing and early coronary artery disease
Date:2/3/2010

uscle, says the 320-CT is fast and exposes patients to far less radiation.

George, an assistant professor at Hopkins where he also serves as director of its CT Perfusion Laboratory, says a CTP takes three seconds or less of actual scanning and, if done correctly, involves an average radiation exposure of about 8 millisieverts. A SPECT test, he says, averages between 10 millisieverts and 26 millisieverts, and cardiac catheterization ranges between 2 millisieverts and 10 millisieverts. The 320-CT scanning device has at least five times the speed and power of the 64-CT scanners in widespread use elsewhere.

The scanner's software compares ratios of brightly dyed blood flows between the innermost and outermost layers of heart muscle, where the effects of arterial narrowing first appear.

As part of CTP imaging, each patient is injected with a chemical dye containing iodine, known to light up on screen when struck by the scanner's X-rays. Lower concentrations of iodine will show up as darker regions, indicating constrained and reduced blood flow, the underlying cause of chest pain, than brighter regions where blood flow is more uniform and free flowing.

To enhance the image, blood flow to the heart is sped up through chemical injections of adenosine, which causes the blood-pumping organ to beat faster.

Previous research by the team among 60 patients with suspected coronary artery disease showed that using dual testing with CTA and CTP had almost the same statistical predictive values as SPECT, prompting the team's latest investigation to see if the dual tests were as clinically useful as SPECT.

George cautions that CT scans are not a substitute for catheterization, but are "an alternative diagnostic tool" physicians can use to "get a real picture" of the extent of coronary blockages and their effects on blood flow, especially when physicians need both sets of information to make treatment decisions.

<
'/>"/>
Contact: David March
dmarch1@jhmi.edu
410-955-1534
Johns Hopkins Medical Institutions
Source:Eurekalert

Page: 1 2 3 4

Related medicine news :

1. Sleep and Do Better
2. Genital Herpes Reactivation Better Understood
3. Couples who say we do better at resolving conflicts
4. Computers do better than humans at measuring some radiology images
5. Immune Response Better With Skin Scratch Vaccination
6. From Risky Health Status to a Better Life
7. Health Reform Tax Changes: Good Progress for Workers; Union to Keep Working for Better Bill
8. For Achilles Overuse, Plasma Injections Look No Better Than Placebo
9. Better Hearing Institute Publishes First Comprehensive Guide to Financial Assistance for Hearing Aids
10. Baskin-Robbins Helps Kick-Start New Years Resolutions With New Better-For-You BRight Choices(TM) Treats
11. Start 2010 With a Resolution for Better Dental Health
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:9/30/2014)... Next to lung cancer, breast cancer is the leading ... American Cancer Society. That,s why so many medical professionals ... are imperfect at best: only a minority of suspicious ... results in lots of needless worry for women and ... of additional tests, including ultrasounds and biopsies. , ...
(Date:9/30/2014)... Utah (PRWEB) September 30, 2014 A new ... Ohio State University studied the impact of stress on metabolism ... burger and french fries from a fast food restaurant, about ... woman’s resting metabolism for 20 minutes every hour for 7 ... Results showed that women who had experienced a stressful event ...
(Date:9/30/2014)... Calif., Sept. 30, 2014 Research by UC Irvine ... functions, shedding light on a vital process that determines ... In the online version of Nature Immunology , ... and other Institute for Immunology colleagues describe a critical ... released into the bloodstream. , A T cell is ...
(Date:9/30/2014)... Vegas, NV (PRWEB) September 30, 2014 ... as a free introduction to SurvivalLife.com along with a free ... caught the attention of Shane Michaels, prompting an investigative review. ... most well-known people in the survival and preparation niche, and ... all of the great classes and survival products that Joe ...
(Date:9/30/2014)... CA (PRWEB) September 30, 2014 ... providers in Turkey has gone up more than 79 ... The medical tourism company also reported total revenue tripled ... 2012. , The company’s professional strategy has allowed them ... — ultimately designed for patient comfort and privacy — ...
Breaking Medicine News(10 mins):Health News:'Virtual breast' could improve cancer detection 2Health News:NutriGold Urges Every Woman To Read a Recent Study About Diet and Stress 2Health News:NutriGold Urges Every Woman To Read a Recent Study About Diet and Stress 3Health News:UCI study uncovers important process for immune system development 2Health News:EverStryke: Review Exposes Joe Marshall’s Permanent Match Survival Product 2Health News:VisitandCare.com Announces Record Demand for Plastic Surgery in Turkey 2Health News:VisitandCare.com Announces Record Demand for Plastic Surgery in Turkey 3Health News:VisitandCare.com Announces Record Demand for Plastic Surgery in Turkey 4
... mates, study finds , MONDAY, June 29 (HealthDay News) -- ... according to a U.S. study that challenges the belief that ... undergraduates for speed-dating events. In half the events, men rotated ... location. The roles were reversed in the other events. , ...
... , ... Institute on Drug Abuse (VIDA) working in collaboration with colleagues at Vector Tobacco, Inc. and ... a better chance at kicking the tobacco habit. , ... Manhasset, NY (Vocus) June 29, 2009 -- Scientists at ...
... Complimentary Continuing Education Monograph for Healthcare Professionals , ... is an autosomal dominant disease affecting between 4,000 and ... attacks of intense localized edema involving the skin, airway, ... or plasmin inhibitors has been the mainstay of HAE ...
... Finnish Academy Professors Lauri Aaltonen and Jussi Taipale have identified ... human genome increases the risk of colorectal cancer. ... variant occurring in chromosome 8, which in itself causes only ... is carried by 75% of people of European origin and ...
... group of scientists working in Indiana University,s School of ... than $2.2 million from the National Institutes of Health ... grant from the National Eye Institute, an arm of ... elite group of vision research centers in the nation. ...
... Germany and ST. LOUIS, June 29 Bayer CropScience ... their respective herbicide tolerance traits in rapeseed/canola on a ... seed businesses. Canola is a form of rapeseed ... , Under the terms of this global agreement, ...
Cached Medicine News:Health News:Maybe Men Aren't So Picky After All 2Health News:News from the Latest Issue of Molecular Medicine Kicking The Habit - It's In The Genes 2Health News:Changing Paradigms in Hereditary Angioedema: Pathophysiology, Diagnosis and Treatment 2Health News:Risk of cancer 2Health News:IU School of Optometry named national vision research center 2Health News:IU School of Optometry named national vision research center 3Health News:Bayer CropScience and Monsanto Sign Cross Licensing Agreement on Herbicide Tolerance Traits in Rapeseed/Canola 2Health News:Bayer CropScience and Monsanto Sign Cross Licensing Agreement on Herbicide Tolerance Traits in Rapeseed/Canola 3
(Date:9/30/2014)... WEST ORANGE , N.J. and NEW BRUNSWICK, N.J., Sept. ... formal affiliation agreement that allows Kessler Foundation and ... to advance biomedical research, education and patient care ... , president and chief executive officer of Kessler ... of New Jersey Health Foundation. "The ...
(Date:9/30/2014)... , Sept. 30, 2014 The Eastern European ... established medical-device providers as well as new medical-device manufacturers ... while simultaneously looking at ways to reduce the cost ... distributors is one of the effective means to achieve ... distribution market in Eastern European and provides profiles of ...
(Date:9/30/2014)... Ariz. , Sept. 30, 2014 Passport ... North America , has launched FluFree.com, a website ... flu vaccinations. For 20 years, Passport Health ... including the flu. The launch of FluFree.com is designed ... vaccination and the number of people who actually chose ...
Breaking Medicine Technology:Kessler Foundation Partners with New Jersey Health Foundation To Start Innovative Companies To Change the Lives of People with Disabilities 2Medical Technologies Distributor Profiles in Eastern Europe 2Medical Technologies Distributor Profiles in Eastern Europe 3Passport Health Launches FluFree.com - Aims To Improve Flu Vaccination Rates and Fulfill Growing Public Health Priority 2Passport Health Launches FluFree.com - Aims To Improve Flu Vaccination Rates and Fulfill Growing Public Health Priority 3
... 26 BioMarin Pharmaceutical Inc. (Nasdaq: BMRN ... Pharmaceuticals, Inc. (Huxley), which has rights to a ... the rare autoimmune disease Lambert Eaton Myasthenic Syndrome ... Products for Human Use of the European Medicines ...
... PINNACLE Network (TM) Links Thousands of Clinical ... Excellence , WASHINGTON, Oct. 26 The ... of the PINNACLE Network(TM), the first-ever registry-based cardiovascular ... each other and to the ACC,s National Cardiovascular ...
Cached Medicine Technology:BioMarin Acquires Huxley Pharmaceuticals, Inc. 2BioMarin Acquires Huxley Pharmaceuticals, Inc. 3BioMarin Acquires Huxley Pharmaceuticals, Inc. 4BioMarin Acquires Huxley Pharmaceuticals, Inc. 5BioMarin Acquires Huxley Pharmaceuticals, Inc. 6American College of Cardiology Launches the Nation's First Registry-Based Cardiovascular Practice Network 2American College of Cardiology Launches the Nation's First Registry-Based Cardiovascular Practice Network 3
Designed to fit a variety of 250 L and 300 ul multi-channel pipettors, this tip offers a secure fit and extra space for repeat pipetting....
... Finntip Filters are ideal for ... or for any work where ... are designed for pipetting DNA/RNA ... and other. For applications requiring ...
Hydrophobic PE filter without self-sealing additives, permits sample recovery after accidental over-pipetting. All filters are sterile (to USP, DAB, Ph.Eur. standards) and PCR clean (free from human ...
... Resistant Tips offer a safe alternative to ... designed for applications such as PCR(a), pipetting ... ART Tips are excellent for tissue culture, ... ART Tips prevent aerosol contaminants and liquids ...
Medicine Products: