Whole-heart coronary MR angiography using image-based navigation for the detection of coronary anomalies in adult patients with congenital heart disease

Abstract

Image-based navigation in combination with respiratory bellows gating allows for more robust suppression of respiratory motion artifacts for whole-heart CMRA compared with conventional 1D NAV as images can be acquired in a shorter time and with improved image quality.

A quantitative comparison between a navigated Cartesian and a self‐navigated radial protocol from clinical studies for free‐breathing 3D whole‐heart bSSFP coronary MRA

“…A sequence similar to Stehning et al but with more sophisticated motion detection and a different 3D radial trajectory has been used in some of the largest patient studies with self‐navigated respiratory motion‐correction to date, reaching a total of ~300 subjects. More recently, image‐based self‐navigation has also been clinically evaluated with promising results …”

“…More recently, image-based self-navigation has also been clinically evaluated with promising results. 23,24 Navigator-gated and respiratory self-navigated wholeheart CMRA have co-existed for many years; therefore, a systematic side-by-side comparison using optimized protocols from large published patient studies is warranted. Our aim is to perform a quantitative comparison of these 2 techniques by replicating protocols from published patient studies as closely as possible and systematically acquiring these protocols in healthy volunteers.…”

Diagnostic performance of image navigated coronary CMR angiography in patients with coronary artery disease

“…More recently, respiratory motion compensation using image-based navigation (iNAV) has been proposed for CMRA, and allows for accurate, direct tracking of the respiratory motion of the heart and can be implemented with inline correction [ 14 ]. In conjunction with efficient respiratory gating such as constant respiratory efficiency using single end-expiratory threshold (CRUISE), CMRA can be acquired with high image quality, with inline processing and in a clinically acceptable scan time [ 15 ].…”

Non‐contrast enhanced simultaneous 3D whole‐heart bright‐blood pulmonary veins visualization and black‐blood quantification of atrial wall thickness

“…Furthermore, 3D comprehensive assessment of cardiovascular anatomy in patients with congenital heart disease is gaining importance. [48][49][50] The proposed BOOST implementation might provide diagnostic insights in such populations as well. Additionally, the assessment of the subject-specific anatomy of the CS and of the coronary vein morphology is critical in the planning of procedures for cardiac resynchronization therapy in patients suffering from heart failure, 51,52 therefore, the use of the MT-prepared BOOST sequence will be also investigated in this context.…”