329 results found
Medical tests
… is injected. Scans may be taken every few minutes for about 30 minutes. More pictures may be taken 1 to 2 hours … over a period of time. These recordings provide information about different phases of blood flow and kidney function. … done. How long the test takes A kidney scan usually takes about 30 minutes to 1 hour. How It Feels You may feel …
Medical tests
… if a person who is in a coma is brain-dead. Study sleep disorders, such as narcolepsy . Watch brain activity while a … not to sleep the night before the test or to sleep for only about 4 or 5 hours. This is because some types of brain … all night. How long the test takes The test will take about 1 to 2 hours. How It Feels There is no pain during an …
Medical tests
… treated using medicine. If you breastfeed and are concerned about whether the contrast material used in this test is … treated using medicine. If you breastfeed and are concerned about whether the contrast material used in this test is …
Medical tests
… the body. In many cases, MRI gives different information about structures in the body than can be seen with an X-ray … infection. MRI also may be done to provide more information about a problem seen on an X-ray, ultrasound scan, or CT … treated using medicine. If you breastfeed and are concerned about whether the contrast material used in this test is …
Medical tests
… Then more pictures are taken. A salivary gland scan takes about 1 hour. How It Feels You will not feel pain during the … Then more pictures are taken. A salivary gland scan takes about 1 hour. How It Feels You will not feel pain during the …
Medical tests
… views of your neck. How long the test takes The test takes about 30 minutes. How It Feels Most people don't feel pain … views of your neck. How long the test takes The test takes about 30 minutes. How It Feels Most people don't feel pain …
Medical tests
… A small amount of the tracer is injected. It takes about 2 to 5 hours for the tracer to bind to your bone so … the pictures. How long the test takes A bone scan takes about 1 hour. How It Feels You may feel nothing at all from … A small amount of the tracer is injected. It takes about 2 to 5 hours for the tracer to bind to your bone so …
Medical tests
Medical tests
Medical tests
… will use drops to widen, or dilate, your pupils, think about having someone else drive you home. The drops make … to widen, or dilate, your pupils . You'll sit and wait for about half an hour for the drops to take effect. For most … taken as the dye enters the eyes. This test usually takes about 30 minutes. Eye ultrasound Eyes closed: You sit in a …
