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European Journal of Ultrasound – 2/2020
Lior Drukker et al.
Automated analysis of prospectively collected data including video recordings of full-length ultrasound scans coupled with operator eye tracking was performed. Using optical recognition, we extracted the Mechanical Index (MI), Thermal Index in soft tissue (TIs), and Thermal Index in bone (TIb) values and ultrasound mode. This allowed us to report the bioeffect safety indices during routine obstetric scans and assess adherence to professional organization recommendations. Eye-tracking analysis allowed us to assess how often operators look at the displayed bioeffect safety indices.
Changes in Liver and Spleen Stiffness by Virtual Touch QuantificationTechnique after Balloon-Occluded Retrograde TransvenousObliteration of Gastric Varices and Exacerbation of EsophagealVarices: A Preliminary Study
Yoshitaka Takuma et al.
To assess liver stiffness (LS) and spleen stiffness (SS) values measured by virtual touch quantification (VTQ) technique in the monitoring of portal pressure and their usefulness for the prediction of the exacerbation of esophageal varices (EV) in patients with gastric varices undergoing balloon-occluded retrograde transvenous obliteration (B-RTO). The LS, SS, and hepatic venous pressure gradient (HVPG) were measured in 20 patients both before and after B-RTO. The change in each parameter between the two groups (EV exacerbation and non-exacerbation groups) was compared by analysis of variance. The efficacy of the parameters for the prediction of the exacerbation of EV was analyzed using a receiver operating characteristic (ROC) curve analysis.