Navigation Links
Newer techniques are making cardiac CT safer for children
Date:7/17/2011

Coronary computed tomography angiography (CTA) has excellent image quality and diagnostic confidence for the entire spectrum of pediatric patients, with significant reduction of risk with recent technological advancements, according to a study to be presented at the Sixth Annual Scientific Meeting of the Society of Cardiovascular Computed Tomography (SCCT) in Denver, July 14-17.

"Traditionally, pediatric patients who require coronary artery imaging have undergone a cardiac catheterization, which is an invasive procedure with a significant radiation dose, requiring sedation or anesthesia for all patients," explained B. Kelly Han, MD, a pediatric cardiologist at Minneapolis Heart Institute at Abbott Northwestern Hospital and the Children's Heart Clinic and Children's Hospitals and Clinics in Minneapolis. "The newer CT scanners deliver far less radiation than both previous generation CT scanners and catheter based angiography. Also, CTA is non-invasive and has different protocols that can be tailored to decrease the risk for each individual patient."

"One barrier to applying coronary CTA in children has been their relatively high heart rates. Using a combination of medication to slow the heart rate and the new scanner technology, we have been able to obtain excellent images of the coronary arteries in patients as young as five months of age" she said.

Han and colleagues conducted a retrospective review of all coronary CTAs performed on patients less than 18 years of age at Minneapolis Heart Institute from June 2007 through February 2011. The researchers examined the heart rate control with beta blockade, and the radiation dose with the varied scan modes, with the goal of comparing the image quality and the radiation dose.

Patients were separated by scan mode into three groups:

  • Group One: First-generation, dual-source CT scanner with retrospective ECG gating (spiral scan mode);
  • Group Two: Second-generation, dual-source CT scanner with prospective ECG gating (sequential scan mode); and
  • Group Three: Second-generation, dual-source CT using prospective ECG gating with high pitch (flash-scan mode).

The researchers compared the age, heart rate, body surface area, radiation dose estimates and image quality between the three groups. They performed 76 scans in patients from three days to 18 years of age.

The differences in radiation dose between the three scan groups were statistically significant, according to the authors, and high image quality was maintained between groups despite the decreased radiation exposure, Han and colleagues reported. A high percentage of the patients had coronary artery pathology including anomaly, stenosis, or aneurysm. Overall, 17 patients underwent subsequent surgical intervention and surgical findings correlated with coronary CTA in all cases.

"We found that the newer imaging modes decrease the radiation dose between four-fold and seven-fold, without loss in diagnostic accuracy or image quality," Han said. "The estimated radiation dose reduction over traditional angiography is even greater. The aggressive use of beta-blockade to slow the heart rate, in combination with the newer scan modes allows for a very low radiation dose in this young patient population."

This technology also will "significantly decrease" the anesthesia and invasive access risk of coronary imaging, according to Han, as the images are acquired without having to access the heart, and all patients age seven or older did not require sedation.


'/>"/>

Contact: Meghan Bethke
mbethke@mhif.org
612-863-5410
Minneapolis Heart Institute Foundation
Source:Eurekalert

Related medicine news :

1. Newer Epilepsy Meds Less Likely to Cause Birth Defects: Study
2. Newer Pill Linked to Higher Risk of Blood Clots
3. Newer Versions of the Pill Pose No Added Risk to Gallbladder
4. UCSF analysis shows newer surgery for neck pain may be better
5. Newer antimalarials more effective than quinine against severe malaria
6. Research shows rapid adoption of newer, more expensive prostate cancer treatments
7. Newer Drug May Help Prevent Fracture in Men With Prostate Cancer
8. Newer, more intense chemotherapy with less radiation not more effective against Hodgkins lymphoma
9. Decrease in suicide not linked to newer antidepressants
10. Newer Drugs Beat Gleevec in Head-to-Head Trials
11. In infant heart surgery, newer technique yields better survival in first year of life
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:10/13/2017)... (PRWEB) , ... October 13, ... ... School of Pharmacy (SOP) alumni Hannah Randall, PharmD ‘17, and Jennifer Huggins, ... professionals on guideline updates for the primary prevention of cardiovascular diseases during ...
(Date:10/13/2017)... ... October 13, 2017 , ... Ellevate Network, the leading network for professional women, ... towards gender equality at their inaugural Summit in New York City in June. The ... social audience of over 3 million. To watch the Mobilize Women video, click ...
(Date:10/13/2017)... ... October 13, 2017 , ... “The Journey: From the ... danger possible to save lost souls in the Philippines. “The Journey: From the Mountains ... a dedicated teacher of the Bible. She has taught all ages and currently teaches ...
(Date:10/12/2017)... ... 2017 , ... The company has developed a suite of ... authorities worldwide. From Children’s to Adults 50+, every formula has been developed by ... , These products are also: Gluten Free, Non-GMO, Vegan, Soy Free, Non-Dairy*, Preservative ...
(Date:10/12/2017)... (PRWEB) , ... October 12, 2017 , ... ... Mohebi Hair Restoration, has recently contributed a medical article to the newly revamped ... cosmetictown.com. Dr. Mohebi’s article spotlights the hair transplant procedure known as Follicular ...
Breaking Medicine News(10 mins):
(Date:10/7/2017)... 2017   Provista, a proven leader in ... in purchasing power, today announced a new resource area ... Newsroom is the online home for case studies, ... bios, news releases, slideshows and events. ... of resources at their fingertips, viewers can also watch ...
(Date:10/4/2017)... 4, 2017 OBP Medical , ... medical devices, today announced regulatory approval from ... (or Agência Nacional de Vigilância Sanitária (ANVISA)) to ... surgical retractor with integrated LED light source and ... and exposure of a tissue pocket or cavity ...
(Date:10/2/2017)... Halo Labs announces the European launch of their new low volume, ... 2017 in Cambridge, U.K on October 4th. ... samples with unprecedented speed and sensitivity while using far less sample ... ... system ...
Breaking Medicine Technology: