329 results found
Medical tests
… Test Overview An angiogram is an X-ray test that uses dye and a camera to take pictures of the blood flow in … veins. An angiogram is done for many reasons. For example, you may have this test to find the source of bleeding, such … is a special concern for people who have kidney problems or diabetes or who are dehydrated . Special measures are used …
Medical tests
… An angiogram of the head and neck is an X-ray test that uses a special dye and camera ( fluoroscopy ) to take … the neck that carry blood to the brain. The test may help your doctor decide if a procedure is needed to open a … is a special concern for people who have kidney problems or diabetes or who are dehydrated . Special measures are used …
Medical tests
… different functions of the eye. Some of the tests measure your ability to see details at near and far distances, check for gaps or defects in your field of vision, and evaluate your ability to see … you wear them). Several types of visual acuity tests may be used. Refraction test. This test shows your level of …
Medical tests
… Information Test Overview Magnetic resonance imaging (MRI) uses a magnetic field and pulses of radio waves to make … ultrasound , or CT scan . The MRI makes pictures that show your breast's normal structure; tissue damage or disease, … is a newer test that takes less time than a standard MRI. (You might hear it called a "fast MRI.") This test is …
Medical tests
… Overview Magnetic resonance imaging (MRI) is a test that uses a magnetic field and pulses of radio wave energy to … . How To Prepare For some MRI pictures of the belly, you may be asked to not eat or drink for several hours before the test. Tell your doctor if you get nervous in tight spaces. You may get …
Medical tests
… is a type of magnetic resonance imaging (MRI) scan that uses a magnetic field and pulses of radio wave energy to … or legs. How To Prepare In general, there's nothing you have to do before this test, unless your doctor tells you to. Tell your doctor if you get …
Medical tests
… imaging (MRI) is a test done with a large machine that uses a magnetic field and pulses of radio wave energy to … with an X-ray , ultrasound , or CT scan . For an MRI test, you are placed inside the machine so that your knee is inside the strong magnetic field. MRI can find …
Medical tests
… nicotine—or the chemicals it produces, such as cotinine—in your blood or urine. It's usually done by testing a sample of your blood or urine. The test is used to see if you smoke or use other forms of tobacco. All …
Medical tests
… Information Test Overview A computed tomography (CT) scan uses X-rays to make detailed pictures of structures inside of the body. During the test, you will lie on a table that is attached to the CT scanner, … material may be used. It may be put in a vein ( IV ) in your arm. Or it may be placed into other parts of your body …
Medical tests
… imaging (MRI) is a test done with a large machine that uses a magnetic field and pulses of radio wave energy to … with an X-ray , ultrasound , or CT scan . For an MRI test, you are placed inside the machine so that your shoulder is inside the strong magnetic field. MRI can …
