Computed Tomography (CT)
Computed Tomography (CT) - correct answer ✔✔Medical Imaging technique in which computer-
enhanced cross-sectional X-ray images are obtained for a diagnosis.
Johann Radon - correct answer ✔✔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 - correct answer ✔✔"Father of CT" / British Engineer
He developed the FIRST Axial CT scanner for EMI Laboratories in 1972.
Allan MacLeod Cormack - correct answer ✔✔South African Physicist
He developed the necessary mathematics in order for the FIRST Axial CT scanner to function in 1972.
James Ambrose - correct answer ✔✔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 - correct answer ✔✔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 - correct answer ✔✔The name of the first CT scanner, 1972.
Dr. Robert Ledley - correct answer ✔✔Professor of Radiology, Physiology and Biophysics
He developed the FIRST full-body CT machine 1974.
CT "generations" - correct answer ✔✔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 - correct answer ✔✔*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 - correct answer ✔✔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 - correct answer ✔✔Head Imaging Only / Mini Fan Beam / 1974
Translate-Rotate
Scan, table moves, scan..etc
Faster than 1st gen, SLOW
Third generation CT scanner - correct answer ✔✔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 - correct answer ✔✔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
Computed Tomography (CT) - correct answer ✔✔Medical Imaging technique in which computer-
enhanced cross-sectional X-ray images are obtained for a diagnosis.
Johann Radon - correct answer ✔✔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 - correct answer ✔✔"Father of CT" / British Engineer
He developed the FIRST Axial CT scanner for EMI Laboratories in 1972.
Allan MacLeod Cormack - correct answer ✔✔South African Physicist
He developed the necessary mathematics in order for the FIRST Axial CT scanner to function in 1972.
James Ambrose - correct answer ✔✔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 - correct answer ✔✔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 - correct answer ✔✔The name of the first CT scanner, 1972.
Dr. Robert Ledley - correct answer ✔✔Professor of Radiology, Physiology and Biophysics
He developed the FIRST full-body CT machine 1974.
CT "generations" - correct answer ✔✔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 - correct answer ✔✔*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 - correct answer ✔✔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 - correct answer ✔✔Head Imaging Only / Mini Fan Beam / 1974
Translate-Rotate
Scan, table moves, scan..etc
Faster than 1st gen, SLOW
Third generation CT scanner - correct answer ✔✔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 - correct answer ✔✔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
