We use cookies to understand how you use our site and to improve your experience. This includes personalizing content and advertising. To learn more, click here. By continuing to use our site, you accept our use of cookies. Cookie Policy.

Features Partner Sites Information LinkXpress
Sign In
Advertise with Us
GLOBETECH PUBLISHING LLC

Download Mobile App




New Tool Uses Ultrasound ‘Tornado’ to Break Down Blood Clots in the Brain

By MedImaging International staff writers
Posted on 24 Jan 2023
Print article
Image: The new tool uses “vortex ultrasound” to break down blood clots (Photo courtesy of CDC, Stephanie Rossow)
Image: The new tool uses “vortex ultrasound” to break down blood clots (Photo courtesy of CDC, Stephanie Rossow)

Cerebral venous sinus thrombosis (CVST) is known to occur when a blood clot forms in the veins responsible for draining blood from the brain. Catheterization or surgical intervention always poses a risk of harm, such as damage caused to the blood vessel itself. Now, researchers have developed a new tool and technique that uses “vortex ultrasound” – a sort of ultrasonic tornado – to break down blood clots in the brain. The researchers found that the new approach was quicker in eliminating clots formed in an in vitro model of CVST as compared to the existing techniques.

The new tool developed by researchers at North Carolina State University (Raleigh, NC, USA) consists of a single transducer that has been specifically designed to create the swirling, vortex effect. The transducer is so small that it can be incorporated into a catheter, which is then fed through the circulatory system to the site of the blood clot. The researchers conducted proof-of-concept in vitro testing by using cow blood in a 3D-printed model of the cerebral venous sinus and found that the new tool could dissolve an acute blood clot in less than 30 minutes. Additionally, the researchers performed experiments by applying vortex ultrasound to animal blood vein samples and found there was no damage to the walls of the blood vessels. They also conducted tests to determine whether the vortex ultrasound caused significant damage to red blood cells and found no substantial damage.

“Our previous work looked at various techniques that use ultrasound to eliminate blood clots using what are essentially forward-facing waves,” said Xiaoning Jiang, co-corresponding author of the study. “Our new work uses vortex ultrasound, where the ultrasound waves have a helical wavefront. In other words, the ultrasound is swirling as it moves forward. Based on our in vitro testing, this approach eliminates blood clots more quickly than existing techniques, largely because of the shear stress induced by the vortex wave.”

“The fact that our new technique works quickly is important, because CVST clots increase pressure on blood vessels in the brain. This increases the risk of a hemorrhage in the brain, which can be catastrophic for patients,” added Chengzhi Shi, co-corresponding author of the study. “Existing techniques rely in large part on interventions that dissolve the blood clot. But this is a time-consuming process. Our approach has the potential to address these clots more quickly, reducing risk for patients.”

Related Links:
North Carolina State University 

Gold Member
Solid State Kv/Dose Multi-Sensor
AGMS-DM+
New
Oncology Information System
RayCare
Gold Member
Radiation QA Tool
Accu-Gold 3
New
Brachytherapy Planning System
Oncentra Brachy

Print article
Radcal

Channels

Radiography

view channel
Image: LumiGuide enables doctors to navigate through blood vessels using light instead of X-ray (Photo courtesy of Philips)

3D Human GPS Powered By Light Paves Way for Radiation-Free Minimally-Invasive Surgery

In vascular surgery, doctors frequently employ endovascular surgery techniques using tools such as guidewires and catheters, often accessing through arteries like the femoral artery. This method is known... Read more

MRI

view channel
Image: The VR visualization platform provides patients and surgeons with access to real-time 3D medical imaging (Photo courtesy of Avatar Medical)

VR Visualization Platform Creates 3D Patient Avatars from CT and MR Images in Real-Time

Surgeons and patients must currently rely on black and white medical images interpreted by radiologists. This limitation becomes more pronounced in complex surgeries, leading to issues such as patient... Read more

Nuclear Medicine

view channel
Image: The PET imaging technique can noninvasively detect active inflammation before clinical symptoms arise (Photo courtesy of 123RF)

New PET Tracer Detects Inflammatory Arthritis Before Symptoms Appear

Rheumatoid arthritis, the most common form of inflammatory arthritis, affects 18 million people globally. It is a complex autoimmune disease marked by chronic inflammation, leading to cartilage and bone... Read more

General/Advanced Imaging

view channel
Image: Routine chest CT holds untapped potential for revealing patients at risk for cardiovascular disease (Photo courtesy of Johns Hopkins)

Routine Chest CT Exams Can Identify Patients at Risk for Cardiovascular Disease

Coronary artery disease (CAD) is the primary cause of death globally. Adults without symptoms but at risk can be screened using EKG-gated coronary artery calcium (CAC) CT scans, which are crucial in assessing... Read more

Imaging IT

view channel
Image: The new Medical Imaging Suite makes healthcare imaging data more accessible, interoperable and useful (Photo courtesy of Google Cloud)

New Google Cloud Medical Imaging Suite Makes Imaging Healthcare Data More Accessible

Medical imaging is a critical tool used to diagnose patients, and there are billions of medical images scanned globally each year. Imaging data accounts for about 90% of all healthcare data1 and, until... Read more

Industry News

view channel
Image: The acquisition will expand IBA’s medical imaging quality assurance offering (Photo courtesy of Radcal)

IBA Acquires Radcal to Expand Medical Imaging Quality Assurance Offering

Ion Beam Applications S.A. (IBA, Louvain-La-Neuve, Belgium), the global leader in particle accelerator technology and a world-leading provider of dosimetry and quality assurance (QA) solutions, has entered... Read more
Copyright © 2000-2024 Globetech Media. All rights reserved.