EDITORIAL - Duplex Ultrasound Examination of Splanchnic Vessels in the Assessment of Splanchnic Ischaemic Symptoms

The role of Doppler sonography in predicting severity of acute pancreatitis

“…Measurement of these variables is dependent on the angle of the insonating beam and on the systemic hemodynamic condition of the patient. 15,25,26 However, our results are in the same range as those of Sakagami et al 15 PI and RI can be measured regardless of the angle of incidence of the ultrasound beam. 22 RI has been reported to be linearly related to vascular resistance and compliance in both in vitro and in vivo studies.…”

“…[22][23][24]26 It was also shown in previous clinical studies that in any resistance situation, PSV and PI change in the same direction. 25,27,28 Velocity ratios (indices) are more sensitive to changes in distal resistance than absolute flow velocity measurements (either PSV or EDV) alone. 29,30 Halpern et al 22 showed that EDV decreased when distal resistance increased in their in vitro flow model.…”

Endovascular Repair of Chronic Mesenteric Occlusive Disease: The Role of Duplex Surveillance

“…Therefore, duplex of the splanchnic arteries is carried out following at least 6 h of fasting (Figs. [2][3][4][5].…”

“…1,3,6 End diastolic velocity criteria for detecting a >50% stenosis in the CA or SMA are >55 cm/s and >45 cm/s, respectively. 5,7 It is of note that there are no large studies on the accuracy of Duplex ultrasound in detecting IMA stenosis or occlusion. The normal parameters adopted for analysis in our study are referenced and displayed in Table 1.…”

“…Duplex criteria representing >50% stenosis[3][4][5] CA, coeliac artery; EDV, end diastolic velocity; IMA, inferior mesenteric artery; PSV, peak systolic velocity; SMA, superior mesenteric artery.…”