Computed tomography
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Transcript of Computed tomography
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COMPUTED TOMOGRAPH
Y
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1970 Sir Godfrey Hounsfield
HISTORY
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BASIC PRINCIPLE ISX-rays are absorbed to different degrees by different tissues
BASIC PHYSICS
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Each scan slice is composed of a large number of pixels which represent the scanned volume of tissue. The pixel is the scanned area on the x and y axis of a given thickness.
PIXELS
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The tissue contained within each pixel absorbs a certain proportion of the x-rays that pass through .This ability to block x-rays as they pass through a substance is known as “attenuation”. For a given body tissue, the amount of attenuation is relatively constant, and is known as that tissue’s “attenuation coefficient
ATTENUATION COEFFICIENT
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Windowing allows the CT reader to focus on certain tissues on a CT scan that fall within set parameters
WINDOWING
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HOW THE TEST PERFORMED????
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HOW TO PREPARE FOR THE TEST ???
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Being exposed to radiationAllergic reaction to contrast dye
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THORACIC SPINE CT SCAN
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SINUS CT SCAN
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SHOULDER CT SCAN
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RENAL SCAN
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PELVIC CT SCAN
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LUMBOSACRAL SPINE CT SCAN
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LUMBAR SPINE CT SCAN
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LEG CT SCAN
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KNEE CT SCAN
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HEART CT SCAN
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CERVICAL SPINE CT SCAN
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ARM CT SCAN
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ABDOMINAL CT SCAN
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CT SCAN NERVOUS SYSTEM SPECIFICALLY
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EPIDURAL HEMATOMA
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SUBDURAL HEMATOMA
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INTRAPARENCHYMAL HAEMORRHAGE
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SUBARACHNOID HAEMORRHAGE
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INTRAVENTRICULAR HAEMORRHAGE
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MASS LESIONS
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TUMOURS
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ISCHEMIC INFARCTION
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ABCESS
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SKULL FRACTURE
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MORE IMAGES FOR YOU…!!!!!
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ABDOMINAL CT SHOWING SEVERAL CYSTS
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ABNORMAL MENINGEAL ENHANCEMENT
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ACUTE PANCREATITIS
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HEMANGIOMA
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ASCITIS
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LEFT INTRABRONCHIAL MASS
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RIGHT SIDE PLEURAL EFFUSION WITH ATLECTASIS
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PERITONIAL METASTASIS OF OVARIAN CANCER
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THYROID CANCER TUMOUR
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TRACHEAL PERFORATION
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WILMS TUMOUR OF RIGHT KIDNEY
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CALCIFICATIONS IN THE HEART
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NURSING INTERVENTIONS
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JOURNAL ARTICLES
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