ArticleAJNR. American journal of neuroradiology2017
Trochlear Groove and Trochlear Cistern: Useful Anatomic Landmarks for Identifying the Tentorial Segment of Cranial Nerve IV on MRI.
Article in AJNR. American journal of neuroradiology, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.
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Who cites it
6 citing papers in PubMed.
- Compressive lesions of the head and neck: Common and uncommon must-know entities.The neuroradiology journal · 2024Review
- High-Resolution 7T MR Imaging of the Trochlear Nerve.AJNR. American journal of neuroradiology · 2023Article
- Trochlear cistern of the cavernous sinus: an anatomical study using magnetic resonance imaging.Surgical and radiologic anatomy : SRA · 2021Observational
- [Normal Anatomy of Cranial Nerves III-XII on Magnetic Resonance Imaging].Taehan Yongsang Uihakhoe chi · 2020Review
- Article
- Coregistration and Fusion: An Easy and Reliable Method for Identifying Cranial Nerve IV on MRI.AJNR. American journal of neuroradiology · 2017Article
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Authors and funding
4 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
background and purposeThe trochlear groove and trochlear cistern are anatomic landmarks closely associated with the tentorial segment of cranial nerve IV. The purposes of this study were to describe the MR imaging appearances of the trochlear groove and trochlear cistern and to test our hypothesis that knowledge of these anatomic landmarks facilitates identification of cranial nerve IV in routine clinical practice. MATERIALS AND
methodsFor this retrospective study, consecutive MR imaging examinations of the sinuses performed in 25 patients (50 sides) at our institution were reviewed. Patient characteristics and study indications were recorded. Three readers performed independent assessments of trochlear groove, cistern, and nerve visibility on coronal images obtained by using a T2-weighted driven equilibrium radiofrequency reset pulse sequence.
resultsInterobserver agreement was 78% for visibility of the trochlear groove, 56% for the trochlear cistern, and 68% for cranial nerve IV. Following consensus review, the trochlear groove was present in 44/50 sides (88%), the trochlear cistern was present in 25/50 sides (50%), and cranial nerve IV was identified in 36/50 sides (72%). When the trochlear groove was present, cranial nerve IV was identified in 35/44 sides (80%), in contrast to 1/6 sides (17%) with no groove (
conclusionsThe trochlear groove and trochlear cistern are anatomic landmarks that facilitate identification of cranial nerve IV in routine clinical practice.
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