The Ohio State University research team recently demonstrated a 3D printing technology at the Cardiovascular Research Technology Conference in Washington, DC, which can be used to determine which type of cardiac aortic valve replacement is appropriate and predict surgical complications. To achieve governance by people.
The main reason for aortic valve replacement is the patient's aortic stenosis, which is unable to pump blood from the left ventricle to the aorta. There are two options for replacement surgery, either a thoracotomy or a catheter inserted from the thigh to deliver the bioprosthesis.
The research team used a variety of flexible materials to print out the 3D model of the aortic valve and surrounding structures according to the CT scan images of different patients, and put the model on the heart simulator to do the pumping experiment to simulate how the new valve works, in order to judge which The surgical plan and valve type are more suitable for the patient.
Scott Leeley, a cardiologist at Ohio State University, said that some patients have specific structures in their heart, such as calcified nodules on the leaflets, or the coronary arteries are very close to the valve, so modeling is used to determine how to place them. The valve is very important.
For example, 3D modeling results showed that a 78-year-old patient had a short aortic root that could not be placed into the valve via a catheter, so a thoracotomy was performed.
According to the researchers, using a laser and a high-speed camera, blood flow velocities and eddy currents can be measured with or without a replacement valve. By simulating different therapies, valve placement and type, early detection of leakage, coagulation or coronary artery occlusion can lead to the selection of the best treatment.
(Editor)
Eye Pencil,Brown Eye Pencil,Soft Eyeliner,Black Eyeliner Pencil
Guangzhou Bijiang Cosmetics Co., Ltd. , https://www.bijiangcosmetics.com