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:7/3/2015)... ... July 03, 2015 , ... ... on June 25, 2015 at 1:00pm. The Association welcomed speaker C. Daniel McGillicuddy ... injured bicyclists and practical points of investigating these types of cases. , Each ...
(Date:7/3/2015)... ... July 03, 2015 , ... First Choice Emergency Room , ... N. Manzanares, MD as the new Medical Director of its Frisco facility. , “We ... our Frisco facility,” said Dr. James M. Muzzarelli, Executive Medical Director of First Choice ...
(Date:7/3/2015)... ... 03, 2015 , ... The Celebrity Dresses is currently running a promotion through ... celebrities will have the opportunity to get 10% discount on orders that are over ... not have to use coupon codes or remember redemption codes. , There is ...
(Date:7/2/2015)... ... ... Following the recent report by JAMA Internal Medicine published on ... Samir Becic emphatically declared a war on obesity in the United States. , "Obesity ... must understand the magnitude of this discovery. For that reason, I am declaring, along ...
(Date:7/2/2015)... Vancouver, BC (PRWEB) , ... July 02, 2015 , ... With summer in full swing, ... , Canada is one of the top spots for fishing in the world, and it’s ... and rivers of Ontario, Canada has great fish. , Recreational fishing is a huge ...
Breaking Medicine News(10 mins):Health News:Attorney from William Mattar Leads Discussion on Bicycle Accidents 2Health News:First Choice Emergency Room Announces Dr. Mariah N. Manzanares as Medical Director of Frisco, TX Facility 2Health News:First Choice Emergency Room Announces Dr. Mariah N. Manzanares as Medical Director of Frisco, TX Facility 3Health News:Celebrity Fashion Summer Party Dresses on sale at TheCelebrityDresses.com 2Health News:Samir Becic's Health Fitness Revolution Declares War Against Obesity in America 2Health News:Samir Becic's Health Fitness Revolution Declares War Against Obesity in America 3Health News:Samir Becic's Health Fitness Revolution Declares War Against Obesity in America 4
... 3 (HealthDay News) -- The impending extinction of various ... important buffer against the transmission of infectious disease, new ... U.S. National Science Foundation and National Institutes of Health,s ... Environmental Protection Agency, focused on how the loss of ...
... findings will be highly useful to the manufacturing industry ... toothpaste, cosmetics, pharmaceuticals and foodstuffs depends on an understanding ... The research just published in Nature ... of Physics and Astronomy, with collaborators at the University ...
... Nearly a quarter of Americans live in rural areas, which ... and suburban areas. Among the complex causes for this disparity ... areas and almost 4 out of 10 rural residents ... Finding the time, transportation, and financial resources for travel ...
... By Steven Reinberg HealthDay Reporter , THURSDAY, ... can cut your risk for first-time stroke by 80 ... Association and the American Stroke Association. Also, as ... care, ER doctors are in a position to identify ...
... By Steven Reinberg HealthDay Reporter , THURSDAY, Dec. ... Department of Health and Human Services (HHS) has announced its ... including making dents in rates of obesity, smoking and deaths ... People is to try to move the nation to better ...
... From hotel-style room service to massage therapy to magnificent ... a bid to gain market share, especially those in ... in the New England Journal of Medicine , ... hospital care, explaining that how we decide to value ...
Cached Medicine News:Health News:Species Extinctions May Spell Trouble for Human Health 2Health News:Smashing fluids: The physics of flow 2Health News:ALBERT EINSTEIN COLLEGE OF MEDICINE HELPS ADDRESS NEED FOR IMPROVED CANCER CARE IN RURAL AMERICA 2Health News:Lifestyle Key to Preventing Stroke, Guidelines Say 2Health News:U.S. Government Sets New Health Goals for 2020 2Health News:U.S. Government Sets New Health Goals for 2020 3Health News:Hospital perks: How much should hospitals be rewarded for the patient experience? 2
(Date:7/2/2015)... , July 2, 2015 Releases ... ,Friendly Aedes aegypti , , reduced the ... Brazil by 95%, well below the ... (Logo: http://photos.prnewswire.com/prnh/20150630/227348LOGO) , The journal PLOS Neglected ... of Oxitec,s genetically engineered mosquitoes. The results showed that ...
(Date:7/2/2015)... 26, 2015 Research and Markets( ... D Market by Analog, Application, End-User & by Region - ... offering. This market is projected to reach about ... in different applications and rising opportunities in countries such as ... Italy , and Brazil ...
(Date:7/2/2015)... SAN FRANCISCO , July 2, 2015  The ... www.tryloud.com ), the world,s first HIPAA compliant mobile app ... delivery of farm-to-table fresh medical marijuana, announced today that ... Unlike Eaze, Meadow and more than half ... in the last year, Loud Cannabis is unique in ...
Breaking Medicine Technology:Oxitec Mosquito Works to Control Aedes aegypti in Dengue Hotspot 2Oxitec Mosquito Works to Control Aedes aegypti in Dengue Hotspot 3Vitamin D Market by Analog, Application, End-User & by Region - Global Trends & Forecast to 2020: Increasing Recommendation By Doctors & Associations 2Vitamin D Market by Analog, Application, End-User & by Region - Global Trends & Forecast to 2020: Increasing Recommendation By Doctors & Associations 3New Cannabis Delivery App Gets Product to Patient in Under 7 Minutes 2
... Care Affiliates ("SCA") today announced that it will host ... on Monday, November 16, 2009, to discuss its 2009 ... be available approximately an hour following the conclusion of ... ) , Please go to SCA,s ...
... Cardiac Science Corporation (Nasdaq: CSCX ... AED ) and diagnostic cardiac monitoring devices, today announced ... 30, 2009, in line with its previous guidance. The Company ... field product update and a non-cash charge of $44.0 million ...
Cached Medicine Technology:Cardiac Science Announces Third Quarter Results 2Cardiac Science Announces Third Quarter Results 3Cardiac Science Announces Third Quarter Results 4Cardiac Science Announces Third Quarter Results 5Cardiac Science Announces Third Quarter Results 6Cardiac Science Announces Third Quarter Results 7Cardiac Science Announces Third Quarter Results 8Cardiac Science Announces Third Quarter Results 9Cardiac Science Announces Third Quarter Results 10Cardiac Science Announces Third Quarter Results 11Cardiac Science Announces Third Quarter Results 12Cardiac Science Announces Third Quarter Results 13Cardiac Science Announces Third Quarter Results 14Cardiac Science Announces Third Quarter Results 15Cardiac Science Announces Third Quarter Results 16Cardiac Science Announces Third Quarter Results 17Cardiac Science Announces Third Quarter Results 18Cardiac Science Announces Third Quarter Results 19Cardiac Science Announces Third Quarter Results 20
... a national reference laboratory and a worldwide ... ARUP offers an extensive test menu of ... clinical and anatomic pathology. Owned by the ... more than half of the nation's university ...
... reference laboratory and a worldwide leader in ... an extensive test menu of highly complex ... anatomic pathology. Owned by the University of ... half of the nation's university teaching hospitals ...
... ARUP Laboratories is a national reference laboratory ... research and development. ARUP offers an extensive ... medical tests in clinical and anatomic pathology. ... Laboratories' clients include more than half of ...
... is a national reference laboratory and a ... development. ARUP offers an extensive test menu ... in clinical and anatomic pathology. Owned by ... include more than half of the nation's ...
Medicine Products: