title: Laser Guidance in C-Arm Cone-Beam CT-Guided Radiofrequency Ablation of Osteoid Osteoma Reduces Fluoroscopy Time.
abstract: OBJECTIVE
  To assess whether laser guidance can reduce fluoroscopy and procedure time of cone-beam computed tomography (CBCT)-guided radiofrequency (RF) ablations of osteoid osteoma compared to freehand CBCT guidance.
  
  
  METHODS
  32 RF ablations were retrospectively analyzed, 17 laser-guided and 15 procedures using the freehand technique. Subgroup selection of 18 ablations in the hip-pelvic region with a similar degree of difficulty was used for a direct comparison. Data are presented as median (ranges).
  
  
  RESULTS
  Comparison of all 32 ablations resulted in fluoroscopy times of 365 s (193-878 s) for freehand and 186 s (75-587 s) for laser-guided procedures (p = 0.004). Corresponding procedure times were 56 min (35-97 min) and 52 min (30-85 min) (p = 0.355). The subgroup showed comparable target sizes, needle path lengths, and number of scans between groups. Fluoroscopy times were lower for laser-guided procedures, 215 s (75-413 s), compared to 384 s (193-878 s) for freehand (p = 0.012). Procedure times were comparable between groups, 51 min (30-72 min) for laser guidance and 58 min (35-79 min) for freehand (p = 0.172).
  
  
  CONCLUSIONS
  Adding laser guidance to CBCT-guided osteoid osteoma RF ablations significantly reduced fluoroscopy time without increasing procedure time.
  
  
  METHODS
  Level 4, case series.
authors.affiliation: Department of Radiology and Nuclear Medicine, Radboud University Medical Center, P. O. Box 9101, 6500 HB, Nijmegen, The Netherlands. Maarten.Kroes@radboudumc.nl.
authors.forename: Maarten W
authors.identifier: http://orcid.org/0000-0002-1138-3022
authors.initials: MW
authors.lastname: Kroes
authors.affiliation: Department of Radiology and Nuclear Medicine, Radboud University Medical Center, P. O. Box 9101, 6500 HB, Nijmegen, The Netherlands.
authors.forename: Wendy M H
authors.initials: WM
authors.lastname: Busser
authors.affiliation: Department of Radiology and Nuclear Medicine, Radboud University Medical Center, P. O. Box 9101, 6500 HB, Nijmegen, The Netherlands.
authors.forename: Yvonne L
authors.initials: YL
authors.lastname: Hoogeveen
authors.affiliation: Department of Radiology and Nuclear Medicine, Radboud University Medical Center, P. O. Box 9101, 6500 HB, Nijmegen, The Netherlands.
authors.forename: Frank
authors.initials: F
authors.lastname: de Lange
authors.affiliation: Department of Radiology and Nuclear Medicine, Radboud University Medical Center, P. O. Box 9101, 6500 HB, Nijmegen, The Netherlands.
authors.forename: Leo J
authors.initials: LJ
authors.lastname: Schultze Kool
mesh_terms: D000293:Adolescent; D000328:Adult; D001859:Bone Neoplasms / Q000601:surgery*; D017115:Catheter Ablation / Q000379:methods*; D002648:Child; D002675:Child, Preschool; D054893:Cone-Beam Computed Tomography / Q000379:methods*; D005260:Female; D005471:Fluoroscopy / Q000379:methods / Q000706:statistics & numerical data; D006801:Humans; D007834:Lasers; D008297:Male; D008875:Middle Aged; D010017:Osteoma, Osteoid / Q000601:surgery*; D015641:Radiography, Interventional / Q000379:methods*; D012189:Retrospective Studies; D013997:Time Factors; D055815:Young Adult
keywords: Cone-beam computed tomography; Fluoroscopy; Image-guided therapy; Laser guidance; Osteoid osteoma; Radiofrequency ablation