title: Modified fusion imaging combining CT gastrography and CT angiography: an initial experience of preoperative mapping prior to laparoscopic exogastric wedge resection of small (<3 cm) gastric submucosal lesions.
abstract: OBJECTIVE
  To evaluate the feasibility of modified fusion imaging (MFI) combining CT gastrography (CTG) and CT angiography (CTA) in the preoperative mapping and intraoperative localization of small (<3 cm) submucosal lesions (SMLs) during laparoscopic exogastric wedge resection.
  
  
  METHODS
  Thirty consecutive patients scheduled for laparoscopic wedge resection of small SMLs (<3 cm) were enrolled. MFI was reconstructed using a volume rendering of the arterial phase CT data acquired after gastric distension. With MFI, the possibility of preoperative mapping and feasibility for successful intraoperative localization was evaluated using intraoperative findings as the reference standard.
  
  
  RESULTS
  In 21 of 30 patients (70%), preoperative mapping was possible. Preoperative mapping was feasible for successful intraoperative localization in 13 of 14 patients (93%) who underwent exogastric resection.
  
  
  CONCLUSIONS
  MFI combining CTG and CTA is a feasible method for developing preoperative and intraoperative "road maps" for performing laparoscopic exogastric wedge resection of small SMLs.
authors.affiliation: Department of Radiology College of Medicine, Korea University, Anam Hospital, 126-1 5-Ka, Anam-Dong, Sungbuk-ku, Seoul, 136-705, Korea.
authors.forename: Na Yeon
authors.initials: NY
authors.lastname: Han
authors.forename: Beom Jin
authors.initials: BJ
authors.lastname: Park
authors.forename: Sung-Soo
authors.initials: SS
authors.lastname: Park
authors.forename: Deuk Jae
authors.initials: DJ
authors.lastname: Sung
authors.forename: Min Ju
authors.initials: MJ
authors.lastname: Kim
authors.forename: Sung Bum
authors.initials: SB
authors.lastname: Cho
authors.forename: Kyung Sook
authors.initials: KS
authors.lastname: Lee
mesh_terms: D000328:Adult; D000368:Aged; D000792:Angiography / Q000379:methods*; D005240:Feasibility Studies; D005260:Female; D005743:Gastrectomy / Q000379:methods; D046152:Gastrointestinal Stromal Tumors / Q000000981:diagnostic imaging* / Q000601:surgery; D006801:Humans; D010535:Laparoscopy; D008297:Male; D008875:Middle Aged; D064847:Multimodal Imaging; D011446:Prospective Studies; D011857:Radiographic Image Interpretation, Computer-Assisted; D012189:Retrospective Studies; D013274:Stomach Neoplasms / Q000000981:diagnostic imaging* / Q000601:surgery; D014057:Tomography, X-Ray Computed / Q000379:methods*; D016896:Treatment Outcome