NeoDym has
studied the complete development of a self-contained,
easy-to-use, portable ultrasound scanner. The scanner
is designed to detect athosclerotic plaque in a
cardiac surgery patient's aorta, prior to connection
to a cardio-pulmonary support system during bypass
surgery.
In many older surgical
patients, the inside walls of the aorta can be coated
with cholesterol-related material. When the surgeon
opens the aorta, this material can dislodge, flowing
through the patient's arteries. If the plaque
fragments lodge in the patient's brain, stroke or
mini-stroke-like events can occur and adverse
neurological outcomes may result.
The hand-held scanner is
operated by the surgeon, who applies the head of the
probe to the aorta. Ultrasonic waves are passed
through the arterial walls, and the resulting images
are displayed on a screen mounted inside the
operating theatre. These images show the varying
density of the accretions in the aortic walls, and
allow the surgeon to judge the safest location for
cannulization of the patient.