title: Intraarticular Sacroiliac Joint Injection Under Computed Tomography Fluoroscopic Guidance: A Technical Note to Reduce Procedural Time and Radiation Dose.
abstract: OBJECTIVE
  A technique for computed tomography fluoroscopy (CTF)-guided intraarticular (IA) sacroiliac joint (SIJ) injection was devised to limit procedural time and radiation dose.
  
  
  METHODS
  Our Institutional Review Board approved this retrospective analysis and waived the requirement for informed consent. Overall, 36 consecutive diagnostic or therapeutic IA SIJ injections (unilateral, 20; bilateral, 16) performed in 34 patients (female, 18; male, 16) with a mean age of 45.5 years (range 20-76 years) under CTF guidance were analyzed, assessing technical success (i.e., IA contrast spread), procedural time, and radiation dose.
  
  
  RESULTS
  All injections were successful from a technical perspective and were free of serious complications. Respective median procedural times and effective doses of SIJ injection were as follows: unilateral, 5.28 min (range 3.58-8.00 min) and 0.11 millisievert (mSv; range 0.07-0.24 mSv); and bilateral, 6.72 min (range 4.17-21.17 min) and 0.11 mSv (range 0.09-0.51 mSv).
  
  
  CONCLUSIONS
  Given the high rate of technical success achieved in limited time duration and with little radiation exposure, CTF-guided IA SIJ injection is a practical and low-risk procedure.
authors.affiliation: Department of Radiology, Arumdaun Wooldul Spine Hospital, 647-4 Sinjeong 2-dong, Nam-gu, Ulsan, 680-828, Republic of Korea. pncspine@gmail.com.
authors.forename: Nam Chull
authors.identifier: http://orcid.org/0000-0002-4203-7106
authors.initials: NC
authors.lastname: Paik
mesh_terms: D000328:Adult; D000368:Aged; D005260:Female; D005471:Fluoroscopy / Q000379:methods*; D006801:Humans; D007270:Injections, Intra-Articular / Q000379:methods*; D008297:Male; D008875:Middle Aged; D064847:Multimodal Imaging / Q000379:methods; D011829:Radiation Dosage; D015641:Radiography, Interventional / Q000379:methods*; D012189:Retrospective Studies; D012446:Sacroiliac Joint / Q000187:drug effects*; D013997:Time Factors; D014057:Tomography, X-Ray Computed / Q000379:methods*; D055815:Young Adult
keywords: Computed tomography fluoroscopy; Intraarticular injection; Procedural time; Radiation dose; Sacroiliac joint