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Medical Dictionary Definitions A-Z List

Medical Dictionary Definitions A - Z - «S»:

  1. Scan Scan
    Scan: As a noun, the data or image obtained from the examination of organs or regions of the body by gathering information with a sensing device. For specific scans, please see their alphabetical listings (such as Bone scan, CAT scan, Spiral CAT scan, Nuchal fold scan, and Thyroid scan)....
  2. Scan, bone Scan, bone
    Scan, bone: A technique to create images of bones on a computer screen or on film. A small amount of radioactive material is injected and travels through the bloodstream. It collects in the bones, especially in abnormal areas of the bones, and is detected by special instrument called a scanner. The ...
  3. Scan, CAT Scan, CAT
    Scan, CAT: Pictures of structures within the body created by a computer that takes the data from multiple X-ray images and turns them in pictures. The CAT (computerized axial tomography) scan can reveal some soft-tissue and other structures that cannot be seen in conventional X-rays. Using the same ...
  4. Scan, computerized axial tomography Scan, computerized axial tomography
    Scan, computerized axial tomography: Pictures of structures within the body created by a computer that takes the data from multiple X-ray images and turns them in pictures. The CAT (computerized axial tomography) scan can reveal some soft-tissue and other structures that cannot be seen in conventio...
  5. Scan, computerized tomography Scan, computerized tomography
    Scan, computerized tomography: Pictures of structures within the body created by a computer that takes the data from multiple X-ray images and turns them in pictures. The computerized tomography (CT) scan can reveal some soft-tissue and other structures that cannot be seen in conventional X-rays. Us...
  6. Scan, CT Scan, CT
    Scan, CT: Pictures of structures within the body created by a computer that takes the data from multiple X-ray images and turns them in pictures. CT stands for computerized tomography. The CT scan can reveal some soft-tissue and other structures that cannot be seen in conventional X-rays. Using t...
  7. Scan, DXA Scan, DXA
    Scan, DXA: See: DXA....
  8. Scan, helical CAT Scan, helical CAT
    Scan, helical CAT: A conventional computerized axial tomography scan (CAT scan or CT scan) is an x-ray procedure which combines many x-ray images with the aid of a computer to generate cross-sectional views and, if needed, three-dimensional images of the internal organs and structures of the body. ...
  9. Scan, radionuclide Scan, radionuclide
    Scan, radionuclide: See: Radionuclide scan....
  10. Scan, SPECT Scan, SPECT
    Scan, SPECT: Single Photon Emission Computed Tomography, a nuclear medicine procedure in which a gamma camera rotates around the patient and takes pictures from many angles, which a computer then uses to form a tomographic (cross-sectional) image. The calculation process in SPECT is similar to that...
  11. Scan, spiral CAT Scan, spiral CAT
    Scan, spiral CAT: A conventional computerized axial tomography scan (CAT scan or CT scan) is an x-ray procedure which combines many x-ray images with the aid of a computer to generate cross-sectional views and, if needed, three-dimensional images of the internal organs and structures of the body. A...
  12. Scan, thyroid Scan, thyroid
    Scan, thyroid: An image taken of the thyroid gland after radioactive iodine is taken by mouth. The thyroid gland is in front of the neck: Thyroid scanning is a nuclear medicine procedure. As the thyroid gland accumulates radioactive material (usually, radioactive technetium or iodine), the gland pr...
  13. Scanning electron microscope Scanning electron microscope
    Scanning electron microscope: Abbreviated SEM. A microscope in which a finely focused beam of electrons is scanned across a specimen, and the electron intensity variations are used to construct an image of the specimen. This type of microscope can effectively achieve magnifications from 200 to 35,0...
  14. Scapula Scapula
    Scapula: The shoulder blade (or "wingbone"), the familiar flat triangular bone at the back of the shoulder. The word "scapula" (with the accent on the first syllable) is Latin. The Romans always employed the plural "scapulae", the shoulder blades. Because the shoulder blade resembles the blade of a...
  15. Scarification Scarification
    Scarification: The making of many small, superficial scratches in the skin. Scarification may be done in giving a smallpox vaccination or in removing a tattoo and leaving a scar in its place....