4D cardiac electromechanical activation imaging
نویسندگان
چکیده
منابع مشابه
Cardiac MRI: Clinical Challenges 4D Flow Imaging
Objectives • To review recent advances in phase contrast MRI methodology that allow for 4D Flow MRI acquisitions in clinically feasible scan times. • To review physiological markers that can be obtained with 4D Flow MRI, including vorticity, pressure maps, pulse wave velocity, .and wall shear stress. • To review potential limitations and potential sources of errors for velocity mapping and para...
متن کاملMapping of cardiac electrical activation with electromechanical wave imaging: an in silico-in vivo reciprocity study.
BACKGROUND Electromechanical wave imaging (EWI) is an entirely noninvasive, ultrasound-based imaging method capable of mapping the electromechanical activation sequence of the ventricles in vivo. Given the broad accessibility of ultrasound scanners in the clinic, the application of EWI could constitute a flexible surrogate for the 3-dimensional electrical activation. OBJECTIVE The purpose of ...
متن کامل4D PET: Beyond conventional dynamic PET imaging
In this paper, we review novel techniques in the emerging field of spatiotemporal 4D PET imaging. We will discuss existing limitations in conventional dynamic PET imaging which involves independent reconstruction of dynamic PET datasets. Various approaches that seek to attempt some or all of these limitations are reviewed in this work, including techniques that util...
متن کاملProgress towards Model-based Estimation of the Cardiac Electromechanical Activity from Ecg Signals and 4d Images
We present recent advances on a 3D numerical modeling of the myocardium which couples electrical and biomechanical models. The long-term objective is to simulate a realistic contraction of the heart from both electrical measurements (typically the ECG) and geometrical measurements (typically provided by medical imaging). This realistic contraction should provide useful quantitative parameters f...
متن کاملHighly Accelerated Free-breathing 4D Cardiac Imaging with CIRCUS Acquisition
INTRODUCTION 4D cardiovascular MRI applications typically require prolonged scan times and suffer from artifacts due to physiological motion. Compressed sensing (CS) and its combination with parallel imaging (PI) have recently emerged as valuable tools for accelerating MRI acquisitions by reconstructing images from undersampled k-space data. The required incoherent artifact in CS is usually ach...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Computers in Biology and Medicine
سال: 2019
ISSN: 0010-4825
DOI: 10.1016/j.compbiomed.2019.103382