A stroke is a medical emergency that prevents a part of your brain from getting the oxygen- and nutrient-rich blood it needs. More specifically, stroke affects the arteries that carries blood to and within your brain. A stroke can have devastating consequences, including disability and even death. Understanding what happens during a stroke can help...

Mammograms and breast cancer treatments have prevented more than a half million deaths in the United States over the past 30 years, according to the American Cancer Society. Improvements in treatments and screening methods can potentially save even more lives each year. Breast cancer is a condition in which abnormal breast cells divide rapidly. The...

About 3 million adults and 470,000 children in the United States have epilepsy, according to the Centers for Disease Control and Prevention (CDC). Doctors are now using MRI-guided laser therapy to treat the seizures caused by epilepsy. Epilepsy is a common brain condition that affects people of all ages, and at any time in life. The disorder causes...

Ankylosing spondylitis (AS) is a type of arthritis that typically affects the spine, although it can affect other joints. Imaging technology, such as x-rays, ultrasound, and magnetic resonance imaging (MRI) scans can help doctors detect the signs of AS; imaging also helps physicians monitor changes over time and adjust the patient's treatment plan ...

Your doctor ordered an MRI study to help diagnose a health problem, but you might worry if MRI is safe. You might be relieved to know that the US Food and Drug Administration (FDA) says that MRIs are very safe – doctors perform millions of MRIs every year, and the FDA receives only about 300 reports of adverse events associated with the test. Here ...

COVID-19 affects the lungs to make it hard to breath, but it can also affect other areas of the body, such as the heart and kidneys. A number of recent radiology studies using computed tomography (CT) and magnetic resonance imaging (MRI) show that infection with coronavirus, which causes COVID-19, can also affect the brain and nervous system. Docto...

CT and MRI are two different types of medical imaging that create images of organs and tissues inside your body. While CT and MRI are similar in many ways, there are differences between them. Because of these differences, doctors might choose one imaging method over the other. Both CTs and MRIs are non-invasive and pain-free, and each can help your...

Prostate care is important to a man's overall health. Located between the bladder and the penis, this walnut-sized gland secretes fluid that nourishes and protects sperm. The urethra, which is a tube that carries urine from the bladder to the penis, runs through the prostate. Prostate problems can press against the urethra to restrict urination and...