Detective flow imaging versus contrast-enhanced EUS in solid pancreatic lesions

Abstract Background and objectives Detective flow imaging EUS (DFI-EUS) is a new technology that detects fine vessels and low-flow velocity without contrast agents, used in real time during EUS, with a better resolution compared to usual technologies such as color Doppler and eFLOW. The aim of this...

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Bibliographic Details
Published in:	Endoscopic ultrasound Vol. 13; no. 4; pp. 248 - 252
Main Authors:	Mulqui, Maria Victoria, Caillol, Fabrice, Ratone, Jean Philippe, Hoibian, Solène, Dahel, Yanis, Meunier, Élise, Archimbaud, Clément, Giovannini, Marc
Format:	Journal Article
Language:	English
Published:	Lippincott Williams & Wilkins 01-07-2024
Subjects:	Original Research
Online Access:	Get full text
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Summary:	Abstract Background and objectives Detective flow imaging EUS (DFI-EUS) is a new technology that detects fine vessels and low-flow velocity without contrast agents, used in real time during EUS, with a better resolution compared to usual technologies such as color Doppler and eFLOW. The aim of this study was to compare DFI-EUS with contrast-enhanced EUS (CE-EUS) for the evaluation of vascularization in solid pancreatic lesions. Methods We included patients who had a pancreatic mass visualized by EUS, with recorded images of their assessment in DFI-EUS and CE-EUS techniques and a histological diagnosis confirmed malignant tumors or a minimum of 1-year follow-up for benign lesions. Results Of the 107 patients included in this retrospective single-center study, the histological diagnosis revealed 69 cases (64.5%) of pancreatic adenocarcinoma, 18 cases (16.8%) of neuroendocrine tumors (NETs), and 10 cases (9.3%) of metastases from nonpancreatic cancers. A smaller proportion (9.4%) exhibited other lesions. As a result, the incidence of intralesional microvascularization was 43.9% with DFI-EUS and 48.6% with CE-EUS, indicating a positive correlation between the 2 techniques ( P = 0.0001). Compared to CE-EUS, DFI-EUS exhibited sensitivity, specificity, positive predictive value (PPV), and negative predictive value (NPV) of 88.5%, 98.2%, 97.9%, and 90%, respectively, for the detection of intralesional vessels. Conclusions The novel technique DFI-EUS demonstrates a remarkable correlation with CE-EUS, exhibiting high sensitivity and specificity for the assessment of microvascularization in solid pancreatic lesions. This method eliminates the need for a contrast agent, thus carrying no risk of adverse effects.
ISSN:	2303-9027 2226-7190
DOI:	10.1097/eus.0000000000000076