Navigation Links
Halving the radiation dose in cardiac perfusion imaging is now 'feasible'
Date:5/17/2011

present study was designed to test whether radiation dose could be reduced without loss of resolution in the diagnostic images.

Radiation effective dose is measured in millisieverts, and, with conventional protocols, each investigation exposes the patient to a radiation dose of between 8 and 25 mSv. This study compared outcome from two protocols, a conventional full dose injection of tracer substance and a half-dose injection. Each group comprised 109 patients, who were investigated with stress-only, rest-and-stress and stress-and rest imaging. The full dose protocol was applied with dosages ranging between 12 and 32 milicurries (mCi) (depending on patient weight); in the half dose protocol dosages ranged between 5 and 17 mSCi. These were converted to radiation effective dose (in mSv).

Professor Zafrir explains that the study only became possible because of the introduction of new image processing software, which was originally designed to reduce the time it takes to acquire a full diagnostic image. " The aim of our study," she says, "was to use the same software but to assess the feasibility of reducing the tracer dose instead of reducing the acquisition time."

Results showed that 94% of the images from the half-dose protocol were assessed as "excellent to good", suggesting no loss of image quality or diagnostic accuracy when the radiation dose of the perfusion was halved.

Professor Zafrir also reports that 35% of the patients in the half-dose group had only a single stress-only investigation, and they were exposed to a mean of just 1.9 mSv. The total effective dose for stress-rest investigation was 7.19 mSv in the half dose protocol compared to 14.4 mSv in the conventional dose protocol.

"So it's our view that myocardial perfusion imaging is feasible with significant radiation dose reduction," says Professor Zafrir. "We found that image quality using the new processing software was similar to that in conventional prot
'/>"/>

Contact: Jacqueline Partarrieu
press@escardio.org
33-492-947-756
European Society of Cardiology
Source:Eurekalert

Page: 1 2 3

Related medicine news :

1. Thomas Jefferson University and hospitals tasked to find new radiation drugs
2. Low-dose chest CT effective in reducing radiation for evaluation of cardiothoracic surgery patients
3. Study says eliminate pelvic imaging to reduce radiation for the detection of venous thromboembolism
4. Breast Cancer Recurrence Rates Appear Different When Radiation Used
5. Proton imaging provides more accuracy, less radiation to pediatric cancer patients
6. Managing Chemoradiation Side Effects May Prolong Survival
7. Society of Interventional Radiology addresses radiation safety, advances best practices
8. Minimizing side effects from chemoradiation could help brain cancer patients live longer
9. Japanese Radiation Called No Threat to North American Fish Fans
10. Radiation at time of lumpectomy may offer faster, more precise treatment for breast cancer patients
11. New radiation treatment practice recommendations for thyroid disease
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:10/2/2014)... Dennis Thompson HealthDay ... -- Hospitals that pull out all the stops to ... saving lives, but the cost of such heroism is ... are about 5 percent better at saving elderly patients ... that operate with less intensity, said senior author Dr. ...
(Date:10/2/2014)... by scientists at The University of Nottingham could lead ... painkiller. , A drug resulting from the research, published ... offer new hope to sufferers of chronic pain conditions ... painkillers are currently available. , The work, led by ... Sciences, in collaboration with David Bates, Professor of Oncology ...
(Date:10/1/2014)... The peptide a small protein beta-amyloid is strongly associated ... unequivocal proof that this peptide is the causal agent ... main obstacle impeding such confirmation is that beta-amyloid is ... it aggregates, that is when it self-assembles to form ... with a single target, beta-amyloid alone, but with multiple ...
(Date:10/1/2014)... in the Journal of the American Medical Association ... with moderate or severe chronic knee pain, acupuncture did ... of Melbourne randomly assigned 282 patients (50 years or ... sham or pretend laser treatment. , Treatments were ... to laser and sham (inactive) laser acupuncture. , Researcher ...
(Date:10/1/2014)... and Physical Sciences Research Council (EPSRC) will focus ... control systems which run, for example, manufacturing plants, ... network. , The research will help understand ... the systems behind our critical national infrastructure. ... Systems (RITICS), based at Imperial College London, is ...
Breaking Medicine News(10 mins):Health News:'High-Intensity' Hospitals Save More Elderly After Surgery: Study 2Health News:'High-Intensity' Hospitals Save More Elderly After Surgery: Study 3Health News:Medical discovery first step on path to new painkillers 2Health News:Laying siege to beta-amyloid, the key protein in Alzheimer's disease 2Health News:Study finds acupuncture does not improve chronic knee pain 2Health News:£2.5 million to recognize and reduce cyber-attack threats to critical infrastructure 2
... By studying the addition of sugars to proteins ... nervous system of insects, Karen Palter, researcher of ... to better understand neurodegenerative diseases in humans. Currently, ... projects exploring the glycosylation process that could eventually ...
... has increased in recent years, the Washington Post reports. ... and the American Society of Aesthetic Plastic Surgery, while ... medicine procedures, the number of blacks, Hispanics and Asians ... five years. In 2002, minorities accounted for 16% of ...
... Evidence is accumulating that depression is a risk factor ... Women's Health Watch. A recent study found that ... called selective serotonin reuptake inhibitors (SSRIs) had double the ... Other research points to depression itself as a source ...
... development and spread of drug-resistant tuberculosis (TB), the Stop TB ... Global Drug Facility, has provided anti-TB drug treatments for 10 ... ,"This is an important milestone, because getting anti-TB ... complete their treatment is the only way to break the ...
... the myriad strains of the human immunodeficiency virus (HIV) ... conducted at the Uniformed Services University of the Health ... variable, its prevention requires a vaccine effective enough to ... neutralise multiple viral strains. ,The latest ...
... Girls actress Lindsay Lohans father, Michael, believes now that his ... change her life completely. ,Lohan is currently ... in Malibu. ,Michael believes that Lohan can ... negative influence. ,"I'm glad she's there and ...
Cached Medicine News:Health News:Nervous Systems of Insects may Offer Clues on Neurodegenerative Diseases 2Health News:Nervous Systems of Insects may Offer Clues on Neurodegenerative Diseases 3Health News:Stop TB Partnership Has Provided Treatments for Ten Million People in Six Years 2
(Date:9/30/2014)... -- STUDY OBJECTIVES The objective of BCC ... overview of the current and future characteristics of ... objective is to present a comprehensive analysis and ... tool in the treatment of various diseases. ... the protein therapeutics market, which includes peptide hormones, ...
(Date:9/30/2014)... , Sept. 30, 2014  Decision Resources Group finds ... Brazil , Russia ... China (BRIC) will see robust expansion as ... favored over surgical procedures. Although revenues will be somewhat ... challenges, prolonged device approval times and demand for low-cost ...
(Date:9/30/2014)... 30, 2014 According ... Market by Product [Enzymes (Glycosyltransferase, Neuraminidase, Glycosidase), ... Reagents], Application (Immunology, Oncology) & by End ... by MarketsandMarkets, provides a detailed overview of ... market trends, and strategies impacting the global ...
Breaking Medicine Technology:Global Markets and Manufacturing Technologies for Protein Drugs -- Focus on Cytokines and Monoclonal Antibodies 2Global Markets and Manufacturing Technologies for Protein Drugs -- Focus on Cytokines and Monoclonal Antibodies 3Global Markets and Manufacturing Technologies for Protein Drugs -- Focus on Cytokines and Monoclonal Antibodies 4Brazilian, Russian, Indian and Chinese Markets for Peripheral Vascular Devices Will See Strong Expansion Through 2023 2Brazilian, Russian, Indian and Chinese Markets for Peripheral Vascular Devices Will See Strong Expansion Through 2023 3Glycobiology / Glycomics Market Worth $928.11 Million by 2019 2Glycobiology / Glycomics Market Worth $928.11 Million by 2019 3Glycobiology / Glycomics Market Worth $928.11 Million by 2019 4
... MD, internationally recognized laser expert and Fellow of the American ... developed a laser technique making laser hair removal burns in ... years, individuals with ethnic skin types have suffered needlessly with ... on Oprah ) have caused them to avoid laser ...
... Women,s Health Weekly recently reported that America,s ... life-changing medicines for diseases affecting women, according to a new ... Manufacturers of America (PhRMA). The medicines are ... are in human clinical trials. , In the U.S., ...
Cached Medicine Technology:WIFH Atlanta Announces Breakthrough Technique in Laser Hair Removal for Ethnic Skin Types 2Record Number of New Medicines in Development for Women 2
Small pupil irrigating nucleus chopper, wedge-shaped inferior edge with, blunt tip and front notch, for engaging the iris, 0.6 mm dual sideports, 20 gauge....
Irrigating nucleus chopper, 0.6 mm dual sideports, 20 gauge. For the right handed surgeon....
Karate phaco chopper, semi-sharp, wedge shaped inferior edge with a pointed tip...
Phaco chopper, short (0.75 mm) pointed "quick chop" tip....
Medicine Products: