Review
Copyright ©The Author(s) 2018.
World J Gastroenterol. Mar 28, 2018; 24(12): 1285-1298
Published online Mar 28, 2018. doi: 10.3748/wjg.v24.i12.1285
Table 3 Intrapulmonary shunt quantitative classification
Contrast-enhanced echocardiography based on the number of microbubbles passing in the left ventricle
No shuntNo detection of microbubbles
Stage 1< 30 microbubbles
Stage 230-100 microbubbles
Stage 3> 100 microbubbles
Macroaggregated albumin lung perfusion
No shunt< 6% brain uptake of radiolabeled albumin
Intrapulmonary shunt≥ 6% brain uptake of radiolabeled albumin