Comparative Evaluation of the Geometrical Accuracy of Intravascular MRI

Guillaume Gilbert¹, Gilles Soulez¹, Gilles Beaudoin¹

In this abstract, the geometrical accuracy of intravascular MRI is evaluated in the context of vascular morphological measurements and compared with results obtained using intravascular ultrasound (IVUS) and surface MRI. Measurements are performed on a multimodality vascular phantom and several bSSFP sequence parameters are investigated in order to assess their influence. Using IVUS as a gold standard, intravascular MRI is shown to lead to an increase in geometrical accuracy in comparison to surface MRI. It also appears that sequence parameters should be tailored to vessel size and procedural time constraints.