1 | Page
Computed Tomography Questions and
Correct Answers/ Latest Update /
Already Graded
Who is Radon?
Ans: in 1917 he develops reconstruction mathematics (two dimensional /
three dimensional
Who is Watson?
Ans: Developed another tomographic technique in which the sections
were transverse (Cross Sectional) "transverse axial tomography
Who is Godfrey Housfield?
Ans: he applied reconstruction technique to produce the 1st clinically
useful ct scanner
He called the technique "Computerized Transverse Axial Scanning"
,2 | Page
Describe the first clinical scanner
Ans: 1971
Brain scanner was installed at Atkins-Morley's Hospital.
Initially took 20 minutes processing time.
Only 4.5 minutes with the introduction of minicomputers.
Who is Allan Cormack?
Ans: Cormack developed the mathematical formulas for processing
data.
Cormack developed the mathematical formulas for processing data.
What does CT?
,3 | Page
Ans: Computed Tomography
How are images obtained?
Ans: 1. X-ray passes through a patient and is attenuated differently by the
various organs.
2. The remnant x-rays are then measured by the detectors.
3. The detectors send info to the computer.
4. The computer performs the image reconstruction.
5. The images are displayed on the television monitor for viewing.
6. The image is stored or recorded on film.
What are advantages of CT over Conventional Radiography
, 4 | Page
Ans: Better contrast resolution
No superimposition of tissue
Less Scatter radiation
3D imaging
Bone mineral assay (bone analysis)
What are clinical uses of CT?
Ans: ● General Diagnosis
● Disease Staging
● Trauma Surveys
● Pre-Operative Planning (Biopsies, Drainages, pain management)
● Invasive Procedures
● Bone Densitometry
● Cerebral Blood flow Studies
FIRST GENERATION
Computed Tomography Questions and
Correct Answers/ Latest Update /
Already Graded
Who is Radon?
Ans: in 1917 he develops reconstruction mathematics (two dimensional /
three dimensional
Who is Watson?
Ans: Developed another tomographic technique in which the sections
were transverse (Cross Sectional) "transverse axial tomography
Who is Godfrey Housfield?
Ans: he applied reconstruction technique to produce the 1st clinically
useful ct scanner
He called the technique "Computerized Transverse Axial Scanning"
,2 | Page
Describe the first clinical scanner
Ans: 1971
Brain scanner was installed at Atkins-Morley's Hospital.
Initially took 20 minutes processing time.
Only 4.5 minutes with the introduction of minicomputers.
Who is Allan Cormack?
Ans: Cormack developed the mathematical formulas for processing
data.
Cormack developed the mathematical formulas for processing data.
What does CT?
,3 | Page
Ans: Computed Tomography
How are images obtained?
Ans: 1. X-ray passes through a patient and is attenuated differently by the
various organs.
2. The remnant x-rays are then measured by the detectors.
3. The detectors send info to the computer.
4. The computer performs the image reconstruction.
5. The images are displayed on the television monitor for viewing.
6. The image is stored or recorded on film.
What are advantages of CT over Conventional Radiography
, 4 | Page
Ans: Better contrast resolution
No superimposition of tissue
Less Scatter radiation
3D imaging
Bone mineral assay (bone analysis)
What are clinical uses of CT?
Ans: ● General Diagnosis
● Disease Staging
● Trauma Surveys
● Pre-Operative Planning (Biopsies, Drainages, pain management)
● Invasive Procedures
● Bone Densitometry
● Cerebral Blood flow Studies
FIRST GENERATION
