Three-dimensional fluid-suppressed T2-prep flow-independent peripheral angiography using balanced SSFP.
Magn Reson Imaging
; 29(8): 1119-24, 2011 Oct.
Article
en En
| MEDLINE
| ID: mdl-21705166
ABSTRACT
Accurate depiction of the vessels of the lower leg, foot or hand benefits from suppression of bright MR signal from lipid (such as bone marrow) and long-T1 fluid (such as synovial fluid and edema). Signal independence of blood flow velocities, good arterial/muscle contrast and arterial/venous separation are also desirable. The high SNR, short scan times and flow properties of balanced steady-state free precession (SSFP) make it an excellent candidate for flow-independent angiography. In this work, a new magnetization-prepared 3D SSFP sequence for flow-independent peripheral angiography is presented. The technique combines a number of component techniques (phase-sensitive fat detection, inversion recovery, T2-preparation and square-spiral phase-encode ordering) to achieve high-contrast peripheral angiograms at only a modest scan time penalty over simple 3D SSFP. The technique is described in detail, a parameter optimization performed and preliminary results presented achieving high contrast and 1-mm isotropic resolution in a normal foot.
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Angiografía por Resonancia Magnética
Límite:
Humans
Idioma:
En
Revista:
Magn Reson Imaging
Año:
2011
Tipo del documento:
Article
País de afiliación:
Estados Unidos