title: Low-dose helical computed tomography (CT) in the perioperative workup of adolescent idiopathic scoliosis.
abstract: The study aims were to estimate the radiation dose in patients examined with low dose spine CT and to compare it with that received by patients undergoing standard CT for trauma of the same region, as well as to evaluate the impact of dose reduction on image quality. Radiation doses in 113 consecutive low dose spine CTs were compared with those in 127 CTs for trauma. The inter- and intraobserver agreement in measurements of pedicular width, and vertebral rotation, measurements of signal-to-noise ratio and assessment of hardware status were the indicators in the evaluation of image quality. The effective dose of the low dose spine CT (0.37 mSv) was 20 times lower than that of a standard CT for trauma (13.09 mSv). This dose reduction conveyed no impact on image quality. This low dose spine CT protocol allows detailed evaluation that is necessary for preoperative planning and postoperative evaluation.
authors.affiliation: Department of Radiology, Section of Neuroradiology, University of Lund, Malmö University Hospital, Malmö, Sweden. Kasim.Abul-Kasim@med.lu.se
authors.forename: Kasim
authors.initials: K
authors.lastname: Abul-Kasim
authors.forename: Angelica
authors.initials: A
authors.lastname: Overgaard
authors.forename: Pavel
authors.initials: P
authors.lastname: Maly
authors.forename: Acke
authors.initials: A
authors.lastname: Ohlin
authors.forename: Mikael
authors.initials: M
authors.lastname: Gunnarsson
authors.forename: Pia C
authors.initials: PC
authors.lastname: Sundgren
mesh_terms: D000293:Adolescent; D000328:Adult; D002648:Child; D003201:Computers; D004867:Equipment Design; D005260:Female; D006801:Humans; D007091:Image Processing, Computer-Assisted; D008297:Male; D015588:Observer Variation; D011829:Radiation Dosage; D011874:Radiometry; D015203:Reproducibility of Results; D012600:Scoliosis / Q000175:diagnosis* / Q000000981:diagnostic imaging* / Q000601:surgery*; D036542:Tomography, Spiral Computed / Q000379:methods*