High-resolution MRI of cranial nerves in posterior fossa at 3.0 T
Asian Pacific Journal of Tropical Medicine
;
(12): 159-161, 2013.
Article
Dans Anglais
| WPRIM
| ID: wpr-820549
ABSTRACT
OBJECTIVE@#To evaluate the influence of high-resolution imaging obtainable with the higher field strength of 3.0 T on the visualization of the brain nerves in the posterior fossa.@*METHODS@#In total, 20 nerves were investigated on MRI of 12 volunteers each and selected for comparison, respectively, with the FSE sequences with 5 mm and 2 mm section thicknesses and gradient recalled echo (GRE) sequences acquired with a 3.0-T scanner. The MR images were evaluated by three independent readers who rated image quality according to depiction of anatomic detail and contrast with use of a rating scale.@*RESULTS@#In general, decrease of the slice thickness showed a significant increase in the detection of nerves as well as in the image quality characteristics. Comparing FSE and GRE imaging, the course of brain nerves and brainstem vessels was visualized best with use of the three-dimensional (3D) pulse sequence.@*CONCLUSIONS@#The comparison revealed the clear advantage of a thin section. The increased resolution enabled immediate identification of all brainstem nerves. GRE sequence most distinctly and confidently depicted pertinent structures and enables 3D reconstruction to illustrate complex relations of the brainstem.
Texte intégral:
Disponible
Indice:
WPRIM (Pacifique occidental)
Sujet Principal:
Imagerie par résonance magnétique
/
Fosse crânienne postérieure
/
Nerfs crâniens
/
Méthodes
Type d'étude:
Étude pronostique
Limites du sujet:
Adulte
/
Femelle
/
Humains
/
Mâle
langue:
Anglais
Texte intégral:
Asian Pacific Journal of Tropical Medicine
Année:
2013
Type:
Article
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