Left Ventricle: Fully Automated Segmentation Based on Spatiotemporal Continuity and Myocardium Information in Cine Cardiac Magnetic Resonance Imaging (LV-FAST)

Abstract

CMR quantification of LV chamber volumes typically and manually defines the basal-most LV, which adds processing time and user-dependence. This study developed an LV segmentation method that is fully automated based on the spatiotemporal continuity of the LV (LV-FAST). An iteratively decreasing threshold region growing approach was used first from the midventricle to the apex, until the LV area and shape discontinued, and then from midventricle to the base, until less than 50% of the myocardium circumference was observable. Region growth was constrained by LV spatiotemporal continuity to improve robustness of apical and basal segmentations. The LV-FAST method was compared with manual tracing on cardiac cine MRI data of 45 consecutive patients. Of the 45 patients, LV-FAST and manual selection identified the same apical slices at both ED and ES and the same basal slices at both ED and ES in 38, 38, 38, and 41 cases, respectively, and their measurements agreed within −1.6 ± 8.7 mL, −1.4 ± 7.8 mL, and 1.0 ± 5.8% for EDV, ESV, and EF, respectively. LV-FAST allowed LV volume-time course quantitatively measured within 3 seconds on a standard desktop computer, which is fast and accurate for processing the cine volumetric cardiac MRI data, and enables LV filling course quantification over the cardiac cycle.

A Deep Learning Network for Right Ventricle Segmentation in Short:Axis MRI

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Novel approach for automatic segmentation of LV endocardium via SPCNN

“…Current literatures can be summarized into following categories: image-driven segmentation [2]- [6], deformable methods and atlas-guided methods [7]- [9]. Image-driven segmentation is mainly based on techniques such as thresholding, region growing and pixel classification.…”

Inevitable dissection of left ventricle aimed at discovery of cardiac blood flow appraisal

“…Cardiac MRI skill display the communal heart structural and efficient facts for verdict and cure of cardiovascular diseases by a noninvasive mode [1]. To quantify the left ventricle (LV) volumes, different imaging types like echo cardiograph, Computed Tomography imaging methods in addition to Magnetic Resonance imaging remain in rehearsal, and moreover this imaging procedureconsumestheirreplaceablecapabilitytoaffordbodilyimager ies of the LV with organized extraordinary chronological and altitudinal determinations, devoid of baring the longsuffering to ionizing contamination or divergence causes [2]. CMRI centered volumetric extents have been before hand exposed to be extremely reproducible [3,4] and are habitually cast off the impost of LV role [5] even thru high-intensity isometrics [6] otherwise in heart malady [7].…”