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Feasibility of intraoperative navigation to the sentinel node in the groin using preoperatively acquired single photon emission computerized tomography data: transferring functional imaging to the operating room



Feasibility of intraoperative navigation to the sentinel node in the groin using preoperatively acquired single photon emission computerized tomography data: transferring functional imaging to the operating room



Journal of Urology 192(6): 1810-1816



We explored the clinical feasibility and accuracy of intraoperative navigation based on preoperatively acquired 3-dimensional functional imaging data. Ten patients with penile carcinoma scheduled for sentinel node biopsy were prospectively included in study. After tracer injection preoperative single photon emission computerized tomography/computerized tomography was performed with a reference target fixed on the patient. Repositioning a sterile reference target shortly before surgery allowed 3-dimensional single photon emission computerized tomography/computerized tomography mixed reality based navigation of the γ probe (also containing a reference target) to the sentinel node. The accuracy of the declipse®SPECT navigation approach was determined in relation to the incision site indicated by the conventional γ probe in the coronal plane and the depth estimation measured on axial computerized tomography slices in the sagittal/axial plane. The 3-dimensional mixed reality approach enabled γ probe navigation toward the sentinel node in all 10 patients. The average ± SD navigation error in the coronal and saggital/axial planes was 5.0 ± 3.9 and 5.3 ± 3.9 mm, respectively. To our knowledge this is the first study demonstrating the feasibility of intraoperative navigation based on preoperatively acquired 3-dimensional single photon emission computerized tomography/computerized tomography images. Although confirmation of successful target localization (eg using γ tracing or fluorescence imaging) remains indispensable, this opens the way to translate 3-dimensional functional imaging data to the operating room.

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Accession: 053220806

Download citation: RISBibTeXText

PMID: 25066868

DOI: 10.1016/j.juro.2014.03.127


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