Discusses test (also called MRI scan) that uses a magnetic field and pulses of radio wave energy to make pictures of organs and structures inside the body. Covers why it is done, how to prepare, and how it is done.

Electronystagmography (ENG) measures normal eye movement and involuntary rapid eye movements called nystagmus. It also checks the muscles that control eye movements. ENG checks how well the eyes, inner ears, and brain help you keep your balance and position (such as when you change from lying down to standing). ENG is...

When John Peterson is behind the wheel of his race car, he's doing more than just trying to win a race. With every lap, he's passing on a message to racing fans about not smoking. John is a race car driver, and his team is Smoke-Free 83. With each lap, fans see John's car covered with information about quitting tobacco...

Provides links to info on sore throats, ear infections, and sinusitis. Also has info on mononucleosis tests and decision aids for sleep apnea and allergies.

A computed tomography (CT) scan uses X-rays to make pictures of the head and face. During the test, you will lie on a table that is attached to the CT scanner, which is a large doughnut-shaped machine. Your head will be positioned inside the scanner.

What is Paget's disease of bone? Paget's disease is a problem of abnormal bone growth. It may affect just one bone, but it usually affects more than one. In normal bone, the bone tissue is constantly being broken down, absorbed into the body, and then rebuilt with new cells. In Paget's disease, bone tissue is broken...

Magnetic resonance imaging (MRI) uses a magnetic field and pulses of radio waves to make pictures of the breast. It does not use X-rays. An MRI may show problems in the breast that can't be seen on a mammogram, ultrasound, or CT scan. The MRI makes pictures that show your breast's normal structure; tissue damage or...

What is swimmer's ear? Swimmer's ear (otitis externa) is an inflammation or infection of the ear canal, the passage that leads from the outer ear to the eardrum. This condition is called swimmer's ear, because it commonly occurs in people who have been swimming. But other people can get it too. What causes it? You can...

Bronchoscopy is a procedure that allows your doctor to look at your airway through a thin viewing device called a bronchoscope. During a bronchoscopy, your doctor will examine your throat, larynx, trachea, and lower airways. This procedure may be done to diagnose problems with the airway, the lungs, or the lymph nodes...

What does "high risk" mean? "High risk" means that a medicine can cause serious health problems or accidents. Some high-risk medicines include muscle relaxers, anxiety and sleep medicines, opioid pain medicines, and some over-the-counter allergy and cold medicines. They're called high-risk because they may make you feel...

A magnetic resonance angiogram (MRA) is a type of magnetic resonance imaging (MRI) scan that uses a magnetic field and pulses of radio wave energy to provide pictures of blood vessels inside the body. In many cases MRA can provide information that...

Offers links to information on health screenings and on reducing risk factors for injury and disease.

What is an anterior cruciate ligament (ACL) injury? An anterior cruciate ligament, or ACL, injury is a tear in one of the knee ligaments that joins the upper leg bone with the lower leg bone. The ACL keeps the knee stable. Injuries range from mild, such as a small tear, to severe, such as when the ligament tears...