Suppose a 6G CT scanner has a patient table which moves at a speed of 2 cm/s. The x-ray source detector apparatus rotates at a speed of 4π radians per second. Also assume that it takes 1 ms to measure a projection.
(a) What is the pitch of the helix?
(b) How many projections does the system measure over a 2π angle?
(c) How long does it take to do a 60 cm torso scan?
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