Heart surgeons typically rely on 2-D images taken by X-ray, ultrasound or MRI to plan their surgery on a patient. But these images may not reveal complex structural defects in the heart present at birth, the researchers explained.
But now, advances in technology are enabling surgeons to build and print detailed 3-D models of patients’ hearts from plaster, ceramic or other materials in order to gain a full understanding of what they’ll face during surgery.
Researchers used the new technology in treating three patients who were born with complex heart defects. In each case, the 3-D model provided important information that wasn’t available from traditional imaging and that influenced how the surgery was performed.
The heart abnormalities were repaired in all three patients, according to the study, which was to be presented on Wednesday at the annual meeting of the American Heart Association (AHA) in Chicago.
“With 3-D printing, surgeons can make better decisions before they go into the operating room,” lead author Dr. Matthew Bramlet, director of the Congenital Heart Disease MRI Program at the University of Illinois College of Medicine, said in an AHA news release.
“The more prepared they are, the better decisions they make, and the fewer surprises that they encounter,” he added.
“When you’re holding the heart model in your hands, it provides a new dimension of understanding that cannot be attained by 2-D or even 3-D images,” he said.
The researchers stressed that this approach is still new and that 3-D printing has not been approved by the U.S. Food and Drug Administration. Findings presented at medical meetings are also typically considered preliminary until published in a peer-reviewed journal.
The U.S. National Heart, Lung, and Blood Institute has more on congenital heart defects.
SOURCE: American Heart Association, news release, Nov. 19, 2014
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