CT Generation Characteristics

Question 0

2nd Generation Characteristics

Answer 0

⏩Fan beam
⏩moved in increments of 10 degrees
⏩bow tie filter
⏩translate rotate scanner
⏩more torso capable 
⏩more detectors than first generation

Question 1

1st Generation Characteristics

Answer 1

⏩Pencil Beam
⏩could only do heads
⏩translate scanner
⏩could only go 180 degrees
⏩moved in 1 degree increments
⏩Very slow

Question 2

3rd Generation characteristics

Answer 2

⏩Rotate-Rotate scanner
⏩rotated 360 degrees
⏩X-ray beam in an arch
⏩more detectors 250-750
⏩scanned faster
⏩tube and detectors rotated in unison
⏩this generations principles are still used today
⏩CON- had a ring artifact&cord got wound up

Question 3

4th Generation Characteristics

Answer 3

⏩Rotate-only scanner
⏩eliminated ring artifact
⏩detectors all around gantry
⏩Any patient motion caused major issues