What you depend on when changing slice thickness in the CT scans?

while scannig pathalogic areas of the body we have to lessen the sclice thickness for batter detail and to evaluate the pathalogy. so we depends on the sclice thickness while imaging the body different parts.

we will depend on the body thickness of the patient to calculate the amount of radiation entering the body of the atient

YES  WE WILL DEPEND ON CHANGING SLICE THICKNESS FOR HRCT, 3D CT 

body part. study. scanner

pitch vs rotation speed.

Depends on body part, study, scanner

if for organs it will be changed depending on the organ or exam and technical changing pitch vs rotation speed.