329 results found
Medical tests
… imaging (MRI) is a test done with a large machine that uses a magnetic field and pulses of radio wave energy to … can also be made. In some cases, a contrast material may be used during the MRI scan to show certain structures more clearly in the pictures. The contrast material may be used to check blood flow, find some types of tumours, and …
Medical tests
… a simple hand-held device. If the device is calibrated and used according to the manufacturer's directions, it can … available. You can get simple devices meant for home use and professional devices like those used by police for suspected drunk drivers. Within minutes …
Medical tests
… Overview Magnetic resonance imaging (MRI) is a test that uses a magnetic field and pulses of radio wave energy to … be made. In some cases, a dye ( contrast material ) may be used during the MRI to show pictures of structures more … and show areas of inflammation. An MRI of the head may be used to look for the cause of headaches. Why It Is Done …
Medical tests
… from carbohydrate foods . It is the main source of energy used by the body. Insulin is a hormone that helps your body's cells use the glucose. Insulin is produced in the pancreas and … levels increase slightly after you eat. This increase causes your pancreas to release insulin so that your blood …
Medical tests
… page: Test Overview Test Overview Radioactive tracers are used in imaging tests that help find problems inside the … collect in a certain organ or area. The types of tests that use radioactive tracers include positron emission tomography … That's the case even with the low-level radioactive tracer used for this test. But the chance of damage is very low …
Medical tests
… of a regular eye examination. To do the test, the doctor uses a light and a magnifying tool. Why is a dilated eye … to look for eye problems and eye diseases. It also can be used to find other problems, such as head injuries or brain … you are allergic to any type of eyedrops. Your doctor will use eyedrops to widen (dilate) your pupils. This makes it …
Medical tests
… tests done on urine in most doctors' offices if they are used exactly as instructed. There are two basic types of … tests. The most common types of home pregnancy tests use a test strip or dipstick that you hold in the urine stream or dip into a sample of urine. A second type uses a urine collection cup with a test device. To use this …
Medical tests
… these smaller parts to find a health problem. CK might be used to help diagnose a heart attack. This topic focuses on CK tests for other reasons than heart attack. Why It Is Done Many things can cause an increase in total creatine kinase (CK) and in the …
Medical tests
… Risks Results Test Overview Doctors use the KOH preparation test to find out if you have a … abbreviation for potassium hydroxide, the solution that is used in the test. Why It Is Done Your doctor may do a KOH … scraping the infected area. Sometimes the doctor will use a swab. The sample is then placed on a slide with …
Medical tests
… that lets a doctor look inside your joints. The doctor uses a thin viewing tool called an arthroscope, or scope. It … connects bone to bone (ligaments). This procedure can be used to see if you have a joint problem or to do surgery … needed with open surgery. Why It Is Done Arthroscopy is used to: Evaluate and diagnose a joint problem when a …
