Pontificia Universidad Católica de Chile Pontificia Universidad Católica de Chile
Vidya Shankar R, Roccia E, Cruz G, Neji R, Botnar R, Prezzi D, Goh V, Prieto C, Dregely I. Accelerated 3D T2 w-imaging of the prostate with 1-millimeter isotropic resolution in less than 3 minutes. Magn Reson Med. 2019; 82(2):721-731 (2020)

Accelerated 3D T2 w-imaging of the prostate with 1-millimeter isotropic resolution in less than 3 minutes

Revista : Magn Reson Med
Volumen : 82
Número : 2
Páginas : 721-731
Tipo de publicación : Publicaciones WOS sin afiliación UC Ir a publicación

Abstract

PURPOSE:To achieve 3D T2 w imaging of the prostate with 1-mm isotropic resolution in less than 3 min.METHODS:We devised and implemented a 3D T2 -prepared multishot balanced steady state free precession (T2 prep-bSSFP) acquisition sequence with a variable density undersampled trajectory combined with a total variation regularized iterative SENSE (TV-SENSE) reconstruction. Prospectively undersampled images of the prostate (acceleration factor R = 3) were acquired in 11 healthy subjects in an institutional review board-approved study. Image quality metrics (subjective signal-to-noise ratio, contrast, sharpness, and overall prostate image quality) were evaluated by 2 radiologists. Scores of the proposed accelerated sequence were compared using the Wilcoxon signed-rank and Kruskal-Wallis non-parametric tests to prostate images acquired using a fully sampled 3D T2 prep-bSSFP acquisition, and with clinical standard 2D and 3D turbo spin echo (TSE) T2 w acquisitions. A P-value 0.05).CONCLUSION:3D T2 w images of the prostate with 1-mm isotropic resolution can be acquired in less than 3 min, with image quality that is comparable to a clinical standard 3D TSE sequence but only takes a third of the acquisition time.