title: New simple image overlay system using a tablet PC for pinpoint identification of the appropriate site for anastomosis in peripheral arterial reconstruction.
abstract: OBJECTIVE
  To evaluate the accuracy and utility of a new image overlay system using a tablet PC for patients undergoing peripheral arterial reconstruction.
  
  
  METHODS
  Eleven limbs treated with distal bypass surgery were studied. Three-dimensional images obtained by processing a preoperative contrast-enhanced computed tomography scan were superimposed onto the back-camera images of a tablet PC. We used this system to pinpoint a planned distal anastomotic site preoperatively and to make a precise incision directly above it during surgery. We used a branch artery near the distal anastomotic site as a reference point and the accuracy of the system was validated by comparing its results with the intraoperative findings. The precision of the system was also compared with that of a preoperative ultrasonographic examination.
  
  
  RESULTS
  Both the image overlay system and ultrasonography (US) accurately identified the target branch artery in all except one limb. In that limb, which had a very small reference branch artery, preoperative US wrongly identified another branch, whereas the image overlay system located the target branch with an error of 10 mm.
  
  
  CONCLUSIONS
  Our image overlay system was easy to use and allowed us to precisely identify a target artery preoperatively. Therefore, this system could be helpful for pinpointing the most accurate incision site during surgery.
authors.affiliation: Division of Vascular Surgery, Department of Surgery, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan.
authors.forename: Yasuaki
authors.initials: Y
authors.lastname: Mochizuki
authors.affiliation: Department of Surgery, Tokyo Metropolitan Tama Medical Center, 2-8-29 Musashidai, Fuchu, Tokyo, 183-8524, Japan. hosaka-a@umin.ac.jp.
authors.forename: Akihiro
authors.initials: A
authors.lastname: Hosaka
authors.affiliation: Advanced Therapeutic and Rehabilitation Engineering Laboratory, Department of Mechano-Informatics, Graduate School of Information Science and Technology, The University of Tokyo, Tokyo, Japan.
authors.forename: Hiroki
authors.initials: H
authors.lastname: Kamiuchi
authors.affiliation: Advanced Therapeutic and Rehabilitation Engineering Laboratory, Department of Mechano-Informatics, Graduate School of Information Science and Technology, The University of Tokyo, Tokyo, Japan.
authors.forename: Jun Xiao
authors.initials: JX
authors.lastname: Nie
authors.affiliation: Advanced Therapeutic and Rehabilitation Engineering Laboratory, Department of Mechano-Informatics, Graduate School of Information Science and Technology, The University of Tokyo, Tokyo, Japan.|Institute of Advanced Biomedical Engineering and Science, Tokyo Women's Medical University, Tokyo, Japan.
authors.forename: Ken
authors.initials: K
authors.lastname: Masamune
authors.affiliation: Division of Vascular Surgery, Department of Surgery, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan.
authors.forename: Katsuyuki
authors.initials: K
authors.lastname: Hoshina
authors.affiliation: Division of Vascular Surgery, Department of Surgery, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan.|Vascular Center, Sanno Medical Center, Tokyo, Japan.
authors.forename: Tetsuro
authors.initials: T
authors.lastname: Miyata
authors.affiliation: Division of Vascular Surgery, Department of Surgery, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan.
authors.forename: Toshiaki
authors.initials: T
authors.lastname: Watanabe
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D000714:Anastomosis, Surgical / Q000295:instrumentation* / Q000379:methods*; D001158:Arteries / Q000000981:diagnostic imaging* / Q000601:surgery; D005260:Female; D006801:Humans; D007866:Leg / Q000098:blood supply / Q000000981:diagnostic imaging; D008297:Male; D008838:Microcomputers; D008875:Middle Aged; D058729:Peripheral Arterial Disease / Q000000981:diagnostic imaging / Q000601:surgery; D019651:Plastic Surgery Procedures / Q000295:instrumentation* / Q000379:methods*; D025321:Surgery, Computer-Assisted / Q000295:instrumentation* / Q000379:methods*; D014463:Ultrasonography; D014656:Vascular Surgical Procedures / Q000295:instrumentation*; D000078329:Workforce
keywords: Distal bypass surgery; Image overlay system; Tablet PC