A liver ultrasound uses high-frequency sound waves to create real-time images of your liver and blood vessels. Doctors use it to confirm or rule out liver disease. Doctors often order a liver ...

Results from a pilot clinical trial evaluating the safety and feasibility of repeated focused ultrasound-induced blood–brain barrier (BBB) opening combined with the monoclonal antibody drug Avastin ...

Jan. 17, 2026 Engineers have created a device that generates incredibly tiny, earthquake-like vibrations on a microchip—and it could transform future electronics. Using a new kind of “phonon laser,” ...

Ultrasonography is an imaging technique that uses the reflections of high-frequency sound waves to create an image of a structure located within the body. Non-invasive imaging of articular cartilage ...

Learn the benefits and risks of options and how to start trading options Lucas Downey is the co-founder of MoneyFlows, and an Investopedia Academy instructor. Samantha (Sam) Silberstein, CFP®, CSLP®, ...

When you pee, not all the urine gets emptied from your bladder. If you have urinary problems, your doctor may need to know how much is left there. A post-void residual urine test can tell them. If the ...

You have two carotid arteries in your neck that are responsible for supplying oxygen-rich blood to your head and brain. Like all arteries, carotid arteries are made up of three layers: An outer ...