C J Sonnenday1, H S Kaufman. 1. Department of Surgery, The Johns Hopkins University School of Medicine, 600 North Wolfe Street, Baltimore, MD 21287, USA.
Abstract
BACKGROUND: This study aimed to establish the accuracy and reproducibility of localization of intraluminal markers by laparoscopic and open techniques in a swine colorectal model, using a prototype for a novel wireless system. METHODS: A prototype marker was placed into the colon of an adult pig. The surgeon was blinded to placement and localized the marker using a detection probe (3 surgeons/10 trials/2-D and 3-D systems). RESULTS: Each surgeon was able to accurately locate the marker within 28.7 +/- 20.6 (LAP) and 18.3 +/- 6.7 (OPEN) sec ( p = 0.013). There were no significant differences between surgeons in localization times, regardless of experience. A 3-D interface made no difference in accuracy or time (LAP = 35 vs 28 seconds; p = NS [not significant]). CONCLUSIONS: This study demonstrates the use of a novel system for intraoperative identification of nonpalpable lesions. This technology may have important implications in the surgical management of nonpalpable tumors and in applications of interventional radiology.
BACKGROUND: This study aimed to establish the accuracy and reproducibility of localization of intraluminal markers by laparoscopic and open techniques in a swine colorectal model, using a prototype for a novel wireless system. METHODS: A prototype marker was placed into the colon of an adult pig. The surgeon was blinded to placement and localized the marker using a detection probe (3 surgeons/10 trials/2-D and 3-D systems). RESULTS: Each surgeon was able to accurately locate the marker within 28.7 +/- 20.6 (LAP) and 18.3 +/- 6.7 (OPEN) sec ( p = 0.013). There were no significant differences between surgeons in localization times, regardless of experience. A 3-D interface made no difference in accuracy or time (LAP = 35 vs 28 seconds; p = NS [not significant]). CONCLUSIONS: This study demonstrates the use of a novel system for intraoperative identification of nonpalpable lesions. This technology may have important implications in the surgical management of nonpalpable tumors and in applications of interventional radiology.
Authors: R Gennari; V Galimberti; C De Cicco; S Zurrida; F Zerwes; F Pigatto; A Luini; G Paganelli; U Veronesi Journal: J Am Coll Surg Date: 2000-06 Impact factor: 6.113