Visualization of the Lower Cranial Nerves by 3D-FIESTA

Okumura, Yuki; Suzuki, Masayuki; Takemura, Akihiro; Tsujii, Hideo; Kawahara, Koji; Matsuura, Yukihiro; Takada, Tadanori

doi:10.6009/jjrt.kj00003326668

Cited by 8 publications

(8 citation statements)

References 8 publications

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“…Imaging cranial nerve structures is particularly important for the skull base surgeon as they are often displaced by tumors or vascular structures and must be preserved to prevent deficits. Few plain imaging techniques [85,86] are able to visualize cranial nerve structures reliably due to both their very small size and potential for imaging artifacts conferred by surrounding structures such as bone and air-filled maxillofacial sinuses. Tractography has been used both qualitatively [16,83,84,[87][88][89][90] and quantitatively [91][92][93][94][95] for cranial nerve applications.…”

Section: Tractography and Cranial Nerve Reconstructionmentioning

confidence: 99%

Tractography for Surgical Neuro-Oncology Planning: Towards a Gold Standard

et al. 2019

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Magnetic resonance imaging tractography permits in vivo visualization of white matter structures. Aside from its academic value, tractography has been proven particularly useful to neurosurgeons for preoperative planning. Preoperative tractography permits both qualitative and quantitative analyses of tumor effects upon surrounding white matter, allowing the surgeon to specifically tailor their operative approach. Despite its benefits, there is controversy pertaining to methodology, implementation, and interpretation of results in this context. High-definition fiber tractography (HDFT) is one of several non-tensor tractography approaches permitting visualization of crossing white matter trajectories at high resolutions, dispensing with the well-known shortcomings of diffusion tensor imaging (DTI) tractography. In this article, we provide an overview of the advantages of HDFT in a neurosurgical context, derived from our considerable experience implementing the technique for academic and clinical purposes. We highlight nuances of qualitative and quantitative approaches to using HDFT for brain tumor surgery planning, and integration of tractography with complementary operative adjuncts, and consider areas requiring further research.

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Section: Tractography and Cranial Nerve Reconstructionmentioning

confidence: 99%

Tractography for Surgical Neuro-Oncology Planning: Towards a Gold Standard

et al. 2019

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“…In the same fashion, it has been reported that 3D-FIESTA sequence is capable of visualizing tiny structures such as small arteries and lower cranial nerves in the CSF space because of its superior contrast resolution. In particular, Okumura et al 17 reported that all glossopharyngeal and vagus nerves were identified to some extent by 3D-FIESTA sequence. In this case, 3D-FIESTA sequence demonstrated better resolution of thin neural structures and neurovascular contacts in comparison with previously reported methods.…”

Section: Discussionmentioning

confidence: 98%

Preoperative Assessment of Microvascular Compression of Cranial Nerve IX and X Using 3D Fast Imaging Employing Steady-state Acquisition Magnetic Resonance Imaging in Glossopharyngeal Neuralgia

Yamakawa¹,

Yamada²,

Sumi

et al. 2006

Neurosurgery Quarterly

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We report a case of glossopharyngeal neuralgia associated with a vascular loop of the postero-inferior cerebellar artery, precisely diagnosed by preoperative magnetic resonance imaging (MRI) with a sequence of 3-dimensional fast imaging employing steady-state acquisition (3D-FIESTA). A 44-year old man experienced paroxysmal and excruciating pain, starting in the left tongue and descending to mandibular angle. Preoperative 3D-FIESTA-MRI delineated a small vascular loop compressing the vago-glossopharyngeal nerve at its cisternal portion. The patient underwent a microvascular decompression surgery. Intraoperative inspection revealed that the glossopharyngeal nerve root was in contact with a small arterial loop at its cisternal portion and was deformed as demonstrated by preoperative 3D-FIESTA-MRI. At the operation, we adopted the method of repositioning the offending loop of the posteroinferior cerebellar artery by lifting and attaching it to the nearby dura of the petrous bone with glue. The patient's neuralgia resolved immediately after the operation. 3D-FIESTA may be a useful method for visualization of microvascular compression of glossopharyngeal nerve in this relatively rare condition.

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“…This sequence offers high-spatial resolution, since it can be performed with thin sections (0.6 mm), and thus is able to depict small structures surrounded by CSF with high contrast. It has been successfully used to visualize various cranial nerves (18).…”

Section: Discussionmentioning

confidence: 99%