Accurate preoperative evaluation of lymph nodes (LNs) involvement is of vital importance for clinical decisions and optimizing individual treatment regimens. Related studies showed elevated perfusion at the level of capillary in metastatic LNs. Inflow-based vascular space occupancy (iVASO) is a novel and noninvasive perfusion technology that can provide absolute blood volume of precapillary arterioles (arteriolar blood volume, BVa). In this study, the potential value of BVa in detecting metastatic LNs was investigated. The results showed that the BVa might have the potential to detect early metastases within lymph nodes.
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