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Computed Tomography CT questions with correct answers 100%.
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Computed Tomography CT questions with correct answers 100%.Computed Tomography (CT) ANS - Medical Imaging technique in which computer-enhanced cross-
sectional X-ray images are obtained for a diagnoses.
Johann Radon ANS - He developed the mathematical theory "Radon Transform" in 1917 that allowed images to be reconstructed from medical scans. Lay the groundwork for Hounsfield/Cormack*
Godfrey Hounsfield ANS - "Father of CT" / British Engineer
He developed the FIRST Axial CT scanner for EMI Laboratories in 1972.
Allan MacLeod Cormack ANS - South African Physicist
He developed the necessary mathematics in order for the FIRST Axial CT scanner to function in 1972.
James Ambrose ANS - Radiologist at Atkinson-Morley's Hospital
He worked with Hounsfield in order to evaluate the usefulness of the FIRST CT machine in 1972.
October 1, 1972 ANS - Date that the FIRST CT scan was done on a LIVING human being. Helped to diagnose a brain lesion in a female patient.
Computerized transverse axial scanning ANS - The name of the first CT scanner, 1972.
Dr. Robert Ledley ANS - Professor of Radiology, Physiology and Biophysics
He developed the FIRST full-body CT machine 1974.
CT "generations" ANS - Referred to the method of CT scanning, it describes the advancements in Technology through the years.
First Generation - Modern CT scanners (3) CT Beam Geometries ANS - *The size, shape, and motion of the beam and its path Pencil - Parallel beam
Fan - 10 degree divergent beam
Cone - Wide divergent fan beam *Modern CT*
First generation CT scanner ANS - Head Imaging Only / Pencil Beam / 1972
Translate-Rotate
Scan, table moves, scan..etc "Water Bag" Head cap - 1st gen only
SLOW
Second generation CT scanner ANS - Head Imaging Only / Mini Fan Beam / 1974
Translate-Rotate
Scan, table moves, scan..etc
Faster than 1st gen, SLOW
Third generation CT scanner ANS - THIS GEOMETRY WON / 1975
All Imaging / Fan beam Rotate-Rotate Curved array of detectors
Beam AND Detectors rotated 360 degrees around pt
FAST
Fourth generation CT scanner ANS - All Imaging / Fan Beam / 1976
Rotate-Stationary
X-ray beam rotated 360 degrees around the patient, but the detectors were stationary in a circle
FAST , expensive, high scatter
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