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Contrast-enhanced intraoperative ultrasound (CE-IOUS) during surgery for colorectal liver metastases (CLM) has become a part of clinical practice. However, if it should be selectively or routinely applied remains unclear. This study is carried out to clarify which are the criteria for a selective use of CE-IOUS if any.
Contrast-enhanced intraoperative ultrasound (CE-IOUS) during surgery for colorectal liver metastases (CLM) is entered in clinical practice. However, its impact seems to decrease with the improvement of preoperative imaging. Therefore, if CE-IOUS should be selectively or routinely applied remains unclear: a profile of patients who may benefit of CE-IOUS application has to be disclosed. The aim of this study is to define reliable criteria for a selective use of CE-IOUS during surgery for CLM. IOUS is performed using 3-6 MHz convex probe, and a 7.5-10 MHz micro convex probe. Staging is completed by CE-IOUS using the standard 3-6 MHz convex probe and the dedicated 1.88-3.76 MHz harmonic frequency probe. In all patients, 2.4 mL of sulphur-hexafluoride microbubbles (SonoVue®, Bracco, Milan, Italy) are injected through a peripheral vein by the anesthesiologist. Ultrasound guidance is used to drive the dissection plane as previously described. Reference standards are histology and imaging at 6 months after surgery. Univariate and multivariate analyses are performed. Statistical significance is set at P=0.05.
Observational Model: Cohort, Time Perspective: Retrospective
Colon Cancer Liver Metastasis
Contrast-enhanced intraoperative ultrasound
Istituto Clinico Humanitas IRCS
University of Milan
Published on BioPortfolio: 2014-07-23T22:00:36-0400
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