Technical Background for 4D Flow MR Imaging

Autor:	Masaki, Terada, Yasuo, Takehara, Haruo, Isoda, Tetsuya, Wakayama, Atsushi, Nozaki
Rok vydání:	2022
Předmět:	Imaging Three-Dimensional Hemodynamics Magnetic Resonance Imaging Cine Heart Radiology Nuclear Medicine and imaging Magnetic Resonance Imaging Blood Flow Velocity Retrospective Studies
Zdroj:	Magnetic Resonance in Medical Sciences. 21:267-277
ISSN:	1880-2206 1347-3182
Popis:	Recently, the hemodynamic assessments with 3D cine phase-contrast (PC) MRI (4D flow MRI) have attracted considerable attention from clinicians. Unlike 2D cine PC MRI, the technique allows for cardiac phase-resolved data acquisitions of flow velocity vectors within the entire FOV during a clinically viable period. Thus, the method has enabled retrospective flowmetry in the spatial and temporal axes, which are essential to derive hemodynamic parameters related to vascular homeostasis and those to the progression of the pathologies. Accelerations in imaging are critical for this technology to be clinically viable; however, a high SNR or velocity-to-noise ratio (VNR) is also vital for accurate flow measurements. In this chapter, the technologies enabling this difficult balance are discussed.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ad490b9c3d77ca9bf04c2dbc581d993d https://doi.org/10.2463/mrms.rev.2021-0104 Zobrazit plný text záznamu