High-resolution MRI of cranial nerves in posterior fossa at 3.0 T
Asian Pacific Journal of Tropical Medicine
; (12): 159-161, 2013.
Article
ي En
| WPRIM
| ID: wpr-820549
المكتبة المسؤولة:
WPRO
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.
النص الكامل:
1
الفهرس:
WPRIM
الموضوع الرئيسي:
Magnetic Resonance Imaging
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Cranial Fossa, Posterior
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Cranial Nerves
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Methods
نوع الدراسة:
Prognostic_studies
المحددات:
Adult
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Female
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Humans
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Male
اللغة:
En
مجلة:
Asian Pacific Journal of Tropical Medicine
السنة:
2013
نوع:
Article