I think that an MRI shows soft tissue better and a CAT scan shows bone structures better.
------------------[list=a] [*] 27 years old computer programmer[*] April 1996 - Bulging L4/L5 disk from car accident.[*] October 2002 - Low back pain and pain in left leg.[*] October 2002 - See chiropractor with minimal relief.[*] November 2002 - MRI shows L4/L5 moderate disk herniation (left and center)[*] January 2003 - Try PT for a couple of weeks some relief until chiropractor visit.[*] February 2003 - Chiropractor does traction, resulting in first instance of numbness in foot.[*] Late February 2003 and still going - New Physical Therapist, not much relief yet...[*] March 2003 - Very light pain in right leg in addition to left, EMG suggests nerve damage/irritaion in both legs.[*] March 2003 - Second MRI shows L4/L5 moderate disk herniation (left and center), slightly larger[*] April 3, 2003 - Epidural Injection, slight pain relief, more tingling in left leg and right.[*] April 17, 2003 - Going for second epidural injection.[*] April 22,2003 - Feeling some relief, started doing exersices from the McKenzie book.[*] May 1, 2003 - Third epidural injection[*] May 7, 2003 - Still in pain, less numbness and tingling[*] June 21, 2003 - Fell in the house, ten times worse.[*] July 14, 2003 - Had laminectomy / micro-discectomy, decompression of nerves on both sides all done from the left side.[*] July 23, 2003 - Lots of burning in both legs.
August 8, 2003 - Still feel like crap, PT makes me feel worse.[/list=a]