Follow-up assessment of coiled intracranial aneurysms using zTE MRA as compared with TOF MRA: a preliminary image quality study.
Eur Radiol
; 27(10): 4271-4280, 2017 Oct.
Article
en En
| MEDLINE
| ID: mdl-28382536
ABSTRACT
OBJECTIVES:
To prospectively assess coiled intracranial aneurysms using a novel non-contrast enhanced zero echo time (zTE) MR angiography (MRA) method, and compare its image quality with time-of-flight (TOF) MRA, using digital subtraction angiography (DSA) as reference.METHODS:
Twenty-five patients (10 males and 15 females; age 53.96 ± 12.46 years) were enrolled in this monocentric study. MRA sequences were performed 24 h before DSA. Susceptibility artefact intensity and flow signal within the parent artery were carried out using a 4-point scale. Occlusion status was assessed using the 3-grade Montreal scale.RESULTS:
Scores of zTE were higher than TOF for both susceptibility artefact intensity (3.42 ± 0.64, 2.92 ± 0.63, P = 0.01) and flow signal (3.66 ± 0.95, 3.24 ± 1.24, P = 0.01). DSA revealed 17 complete occlusions, five residual neck aneurysms and two residual aneurysms. Inter-observer agreement was excellent (weighted κ 0.89) for zTE and good (weighted κ 0.68) for TOF. Intermodality agreement was excellent for zTE (weighted κ 0.95) and good for TOF (weighted κ 0.80). Correlations of both MRA sequences with DSA were high (zTE, Spearman's ρ 0.91; TOF, Spearman's ρ 0.81).CONCLUSIONS:
zTE MRA showed promising results for follow-up assessment of coiled intracranial aneurysms and was superior to TOF MRA for visualizing the parent artery and evaluating occlusion status. KEY POINTS ⢠Various MRA sequences were applied for follow-up assessment of coiled intracranial aneurysms. ⢠zTE MRA was less sensitive to susceptibility artefacts and haemodynamics. ⢠In this monocentric study, zTE MRA was equivalent to DSA. ⢠zTE MRA maybe an alternative to TOF MRA for follow-up assessment.Palabras clave
Texto completo:
1
Colección:
01-internacional
Banco de datos:
MEDLINE
Asunto principal:
Aneurisma Intracraneal
/
Angiografía por Resonancia Magnética
Tipo de estudio:
Observational_studies
/
Prognostic_studies
Límite:
Adult
/
Aged
/
Aged80
/
Female
/
Humans
/
Male
/
Middle aged
Idioma:
En
Revista:
Eur Radiol
Asunto de la revista:
RADIOLOGIA
Año:
2017
Tipo del documento:
Article
País de afiliación:
China