Navigation Links
Reducing radiation: Heart Institute model shows hope for new standards worldwide
Date:10/30/2012

Toronto, October 29, 2012 The University of Ottawa Heart Institute (UOHI) is setting the stage in what could become a revolution in medical imaging in Canada as it announces striking results in radiation reduction for the diagnosis of cardiovascular disease. The announcement comes as UOHI is currently showcasing its expertise at the 2012 Canadian Cardiovascular Congress in Toronto.

As a result of an initiative that combines optimizing test protocols, state-of-the art equipment, and high-tech software, two-thirds of the Ottawa Heart Institute's Nuclear Cardiology patients are currently receiving half the radiation dosage that they would normally get. Radiation reduction techniques have been achieved across all types of radiation-based cardiac imagingnuclear, CT and PET. The Heart Institute is one of only a handful of centres in Canada with the in-house expertise to evaluate and clinically apply such advances across these technologies. UOHI is confident that all of its patients will receive lower amounts of radiation, and even less by early next year.

The American Society for Nuclear Cardiology has challenged the nuclear cardiology community to reduce radiation exposure below 9 millisieverts (mSv) by 2014. The techniques being employed at the Heart Institute regularly reduce exposure to 5 mSv, and often much less, putting UOHI well ahead of the game. This figure has not bottomed out as efforts will continue to minimize radiation wherever possible.

"Our clinicians are taking a much more critical look at who they are testing with radioactive methods and making decisions based upon risk and necessity which will only expose patients to radiation who truly need the test," said Dr. Benjamin Chow, Co-Director of Cardiac Radiology at the University of Ottawa Heart Institute. These responsible practices, along with a judicious use of technology, could revolutionize cardiac imaging in Canada."

The benefits of this effort include reduced radiation dosages for patients, greater flexibility for tailoring tests for patients, and, in some cases, reduced demand placed on radioisotopes. For younger patients, for example, radiation exposure poses greater risks because they have more years in which cancer could develop. So minimizing their dosage is a high priority. In the case of older patients whose lives may be threatened by an immediate cardiac condition, the benefit would outweigh the small risk of developing cancer later in life.

UOHI also uses a combination of powerful and effective tools that enable better diagnosis of cardiovascular problems. The cadmium zinc telluride camera system used for nuclear imaging is a significant innovation and was implemented by Dr. Glenn Wells, Medical Physicist in Nuclear Cardiology. The Heart Institute was one of the first centres in the world with this technology in 2009, and it had a major impact on reducing radiation in perfusion SPECT scans, by far the most common cardiac imaging test.

The introduction of PET cameras in the late 1990s, which provide much more detailed imagery with much lower levels of injected isotopes, has also had an impact on reducing radiation exposure. The use of such cameras in Canada is still uncommon but increasing.

Software is another critical part of imaging, turning the scanner data into coherent two- or even three-dimensional pictures of what is found in a patient's body. The Heart Institute has helped commercial developers evaluate and improve new advanced software packages for both PET and SPECT scanners that maintain image quality while using less radioactive isotopes.

Over the years, radiation has become a concern for our society, yet often we do not realize the significant benefit of highly accurate diagnostic techniques which may require very low amounts of medical radiation. "Careful and appropriate selection of the right test for the right patient balancing benefit and risk enables optimal patient care," said Dr. Terrence Ruddy, Director of Nuclear Cardiology, University of Ottawa Heart Institute. Experts at the University of Ottawa Heart Institute have demonstrated the tremendous capabilities of these techniques, and the equally tremendous strides that have been made in applying them responsibly.


'/>"/>

Contact: Vincent Lamontagne
vlamontagne@ottawaheart.ca
613-899-6760
University of Ottawa Heart Institute
Source:Eurekalert

Related biology news :

1. Researchers find reducing fishmeal hinders growth of farmed fish
2. Reducing traffic at 2008 Olympics yielded large cut in CO2
3. Low ghrelin -- reducing appetite at the cost of increased stress?
4. A solution to reducing inflammation
5. Remarkable enzyme points the way to reducing nitric acid use in industry
6. Heart-powered pacemaker could one day eliminate battery-replacement surgery
7. Geological Society of America Cordilleran section meets in the heart of Mexico
8. Cell therapy using patients own bone marrow may present option for heart disease
9. New analysis of premature infants heartbeats, breathing could be cues for leaving NICU
10. Minneapolis Heart Institute selected to participate in Cardiovascular Cell Therapy Research Network
11. Second-generation drug used for hypertension aids heart function independent of blood pressure
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:6/16/2016)... FRANCISCO , June 16, 2016 ... size is expected to reach USD 1.83 ... by Grand View Research, Inc. Technological proliferation and ... banking applications are expected to drive the market ... ) , The development of advanced ...
(Date:6/9/2016)... June 9, 2016 Paris ... Teleste,s video security solution to ensure the safety of people ... during the major tournament Teleste, an international ... and services, announced today that its video security solution will ... to back up public safety across the country. The system ...
(Date:6/2/2016)... , June 2, 2016 The ... has awarded the 44 million US Dollar project, for ... Embossed Vehicle Plates including Personalization, Enrolment, and IT Infrastructure ... leader in the production and implementation of Identity Management Solutions. ... January, however Decatur was selected for ...
Breaking Biology News(10 mins):
(Date:6/27/2016)... BOSTON , June 27, 2016   Ginkgo ... biology to industrial engineering, was today awarded as ... a selection of the world,s most innovative companies. ... at scale for the real world in the ... organism engineers work directly with customers including Fortune ...
(Date:6/23/2016)... , ... June 23, 2016 , ... ... release of its second eBook, “Clinical Trials Patient Recruitment and Retention Tips.” Partnering ... retention in this eBook by providing practical tips, tools, and strategies for clinical ...
(Date:6/23/2016)... 2016 Houston Methodist Willowbrook Hospital has ... Association to serve as their official health care ... Willowbrook will provide sponsorship support, athletic training services, ... coaches, volunteers, athletes and families. "We ... Association and to bring Houston Methodist quality services ...
(Date:6/23/2016)... ... June 23, 2016 , ... Supplyframe, ... of the Supplyframe Design Lab . Located in Pasadena, Calif., the Design ... of how hardware projects are designed, built and brought to market. , The ...
Breaking Biology Technology: