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COMPUTED TOMOGRAPHY

COMPUTED TOMOGRAPHY. DR BENCZIK , JUDIT. PRINCIPLES. U SES X - RAYS M ULTIPLE SLICES AXIAL IMAGES C OMPUTER MANIPULATION R ECONSTRUCTION. JB/CT. ADVANTAGES OF CT. AXIAL IMAGES 3D RECONSTRUCTION POSSIBLE THICKNES- AND VOLUME MEASUREMENT BEST METHOD TO VISUALIZE BONE AND GAS

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COMPUTED TOMOGRAPHY

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  1. COMPUTED TOMOGRAPHY DR BENCZIK, JUDIT

  2. PRINCIPLES USESX-RAYS MULTIPLESLICES AXIALIMAGES COMPUTERMANIPULATION RECONSTRUCTION JB/CT

  3. ADVANTAGES OF CT AXIAL IMAGES 3D RECONSTRUCTION POSSIBLE THICKNES- AND VOLUME MEASUREMENT BEST METHOD TO VISUALIZE BONE AND GAS ARTHROGRAPHY POSSIBLE JB/CT

  4. ADVANTAGES OF CT DIGITAL IMAGE view on computer VARIABLE WINDOWS tissue specific GOOD RESOLUTION: 1mm NO SUPERIMPOSITION FAST JB/CT

  5. DISADVANTAGES OF CT IONIZINGRADIATION SEDATION OR ANESTHESIA NEEDED MOTION LIMITED TISSUE CHARACTERIZATION EXPENSIVE AND TIME CONSUMING JB/CT

  6. EVALUATION CT NUMBER / HOUNSFIELD UNIT (HU) -1000 to +3000 (normalized to H2O) FAT/FLUID/SOFT TISSUE: -300 to +300 HU of H2O = 0 BONE/METAL: up to +3000 CONTRAST AGENTS air / gas: -1000 I / Ba: +3000 JB/CT

  7. CLINICAL INDICATIONS PULMONARY PARENCHYMA MEDIASTINUM lymph nodes, vessels, thymus, esophagus, trachea THORACIC WALL soft tissues, vertebrae, ribs, sternum, pleura HEART AND VASCULATURE JB/CT

  8. CLINICAL INDICATIONS CNS, BONES, JOINTS PARENCHYMAL ORGANS (ABDOMEN): liver, spleen, pancreas, kidneys, adrenal glands, lymphnodes URINARY SYSTEM VASCULATURE TUBULAR ORGANS: GI tract ABDOMINAL WALL: soft tissues JB/CT

  9. INTERPRETATION NOMENCLATURE TERMINOLOGY FINDINGS: 1. SIZE 2. SHAPE 3. NUMBER 4. LOCATION 5. MARGINATION 6. HU JB/CT

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