Sagittal fresh blood imaging with interleaved acquisition of systolic and diastolic data for improved robustness to motion.
Magn Reson Med
; 69(2): 321-8, 2013 Feb.
Article
em En
| MEDLINE
| ID: mdl-23300129
ABSTRACT
PURPOSE:
To improve robustness to patient motion of "fresh blood imaging" (FBI) for lower extremity noncontrast MR angiography.METHODS:
In FBI, two sets of three-dimensional fast spin echo images are acquired at different cardiac phases and subtracted to generate bright-blood angiograms. Routinely performed with a single coronal slab and sequential acquisition of systolic and diastolic data, FBI is prone to subtraction errors due to patient motion. In this preliminary feasibility study, FBI was implemented with two sagittal imaging slabs, and the systolic and diastolic acquisitions were interleaved to minimize sensitivity to motion. The proposed technique was evaluated in volunteers and patients.RESULTS:
In 10 volunteers, imaged while performing controlled movements, interleaved FBI demonstrated better tolerance to subject motion than sequential FBI. In one patient with peripheral arterial disease, interleaved FBI offered better depiction of collateral flow by reducing sensitivity to inadvertent motion.CONCLUSIONS:
FBI with interleaved acquisition of diastolic and systolic data in two sagittal imaging slabs offers improved tolerance to patient motion.
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Artefatos
/
Angiografia por Ressonância Magnética
/
Doença Arterial Periférica
/
Perna (Membro)
/
Movimento
Tipo de estudo:
Diagnostic_studies
Limite:
Adult
/
Aged
/
Female
/
Humans
/
Male
/
Middle aged
Idioma:
En
Revista:
Magn Reson Med
Assunto da revista:
DIAGNOSTICO POR IMAGEM
Ano de publicação:
2013
Tipo de documento:
Article
País de afiliação:
Estados Unidos