Hypoglossal Nerve Lesions: The Role of a 3D IR‐Prepped Fast SPGR High‐Resolution 3T MRI Sequence

Geng, Chengjun; Lu, Ze-Hua; Xuan, Lulu; Yin, Hui-Kang; Yang, Xiaoliang; Yang, Lu; Hao, Bingtao; Chu, Wei Fa

doi:10.1111/jon.12762

Cited by 5 publications

(2 citation statements)

References 23 publications

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“…Because 3D BRAVO sequence has notable advantages over conventional 2D MRI, previous studies have demonstrated that the 3D BRAVO enhanced sequence can detect more and smaller lesions than conventional enhanced MRI; it can display the inner segment of the facial and hypoglossal nerves, enabling the detection of lesions [ 8 – 10 ]. In this study, we found that compared with conventional 2D enhanced sequence, 3D BRAVO enhanced sequence could detect more patients with cranial nerve involvement.…”

Section: Discussionmentioning

confidence: 99%

The value of 3D high-resolution IR-prepared fast spoiled gradient-recalled MRI in the diagnosis of meningeal carcinomatosis involving the cranial nerves

Xuan,

Huang,

Yin

et al. 2023

BMC Med Imaging

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Purpose The purpose of this study was to investigate the clinical utility of three-dimension (3D) high-resolution inversion recovery (IR)-prepared fast spoiled gradient-recalled (SPGR) magnetic resonance imaging (MRI) in the diagnosis of cranial nerve meningeal carcinomatosis (MC). Methods A total of 114 patients with MC from January 2015 to March 2020 were enrolled and their MRIs were analyzed retrospectively. All patients underwent MRIs before being administered a contrast agent. Both a 2D conventional MRI sequence and a 3D IR-prepared fast SPGR high-resolution T1-weighted (BRAVO) scan sequence were measured after contrast agent administration. The characteristics of MC and the involved cranial nerves were then examined. Results Among the 114 MC patients, 81 (71.05%) had cranial nerve enhancement on contrast-enhanced 3D-BRAVO imaging, while only 41 (35.96%) had image enhancement on conventional MRI. The contrast-enhanced 3D-BRAVO displayed stronger image contrast enhancement of the cranial nerves than the conventional MRI (P < 0.001). Furthermore, detection rates for the facial and auditory nerves, trigeminal nerve, oculomotor nerve, sublingual nerve, optic nerve, glossopharyngeal/vagal/accessory nerve, and abductor nerve on contrast-enhanced 3D-BRAVO imaging were 58.77%, 47.37%, 9.65%, 8.77%, 5.26%, 3.51%, and 0.88%, respectively. We found a statistically significant difference between the affected facial and auditory nerves, as well as the trigeminal nerve, oculomotor nerve, sublingual nerve, and optic nerve. Conclusion In MC, contrast-enhanced 3D-BRAVO imaging displayed the cranial nerves more effectively than 2D conventional enhanced MRI. The facial, auditory, and trigeminal nerves are the primary nerves involved in MC, and improved scanning of these nerves would aid in the early detection and treatment of MC.

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Section: Discussionmentioning

confidence: 99%

The value of 3D high-resolution IR-prepared fast spoiled gradient-recalled MRI in the diagnosis of meningeal carcinomatosis involving the cranial nerves

Xuan,

Huang,

Yin

et al. 2023

BMC Med Imaging

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“…For each subject, axial T1-weighted image (in total 188 slices) were acquired using an IR-prepped 3D fast gradient echo T1-weighted sequence (BRAVO) sequence with the following parameter: voxel size: 0.47 × 0.47 × 1.0 mm; repetition time: 7.5 ms; echo time: 2.8 ms; flip angle: 15°, field-of-view: 256 mm. The BRAVO sequence could provide isotropic voxels resulting in the higher spatial resolution images, which present crisper anatomic details to identify the lesions compared with the conventional scanning sequence ( 23 ). Furthermore, the sequence is optimized during the TI (time of inversion) process to provide excellent gray-white matter contrast, enabling gray-white matter segmentation and local volume measurements ( 24 ), which makes the results more accurate.…”

Section: Methodsmentioning

confidence: 99%

Patterns of Gray and White Matter Volume Alterations in Patients With Post-Traumatic Anosmia: A Voxel-Based Morphometry Study

Gao

Sun

et al. 2022

Front. Neurol.

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ObjectiveTraumatic brain injury is one of the major causes of human olfactory dysfunction and leads to brain structure alterations, mainly in the cortical olfactory regions. Our study aimed to investigate volume changes in the gray matter (GM) and white matter (WM) in patients with post-traumatic anosmia and then to explore the relationship between GM volume and olfactory function.MethodsEthics committee approved prospective studies which included 22 patients with post-traumatic anosmia and 18 age- and gender-matched healthy volunteers. Olfactory function was assessed using the Sniffin' Sticks. High-resolution 3-dimensional T1 MRIs of the participants were acquired on a 3T scanner and the data were collected for voxel-based morphometry (VBM) analysis. Furthermore, the GM and WM volumes of the whole brain regions were compared and correlated with olfactory function.ResultsThe analysis revealed significant GM volume reduction in the orbitofrontal cortex (OFC), gyrus rectus (GR), olfactory cortex, insula, parahippocampal, temporal pole, and cerebellum (all P < 0.001) in patients. Besides, WM volume loss was also found in the OFC, GR, and insula (all P < 0.001) in patients. All WM atrophy areas were connected to areas of GM volume loss spatially. Correlation analysis showed the olfactory scores were significantly positively correlated with the GM volume of the occipital cortex (P < 0.001, and PFWE < 0.05), while no significant correlation was found between the Sniffin' Sticks test scores and the WM volume in patients.ConclusionThe reduction of GM and WM volume in olfactory-related regions was responsible for olfactory dysfunction in post-traumatic patients. The occipital cortex may play a compensation mechanism to maintain the residual olfactory function. To our knowledge, we report here for the first time on white matter volume alterations specifically in post-traumatic patients with anosmia.

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2D and 3D structures of the whole-brain, directly visible from 100-µm slice 7TMRI images

Kikuchi

Jitsuishi

Hirono

et al. 2023

Interdisciplinary Neurosurgery

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Hypoglossal Nerve Lesions: The Role of a 3D IR‐Prepped Fast SPGR High‐Resolution 3T MRI Sequence

Cited by 5 publications

References 23 publications

The value of 3D high-resolution IR-prepared fast spoiled gradient-recalled MRI in the diagnosis of meningeal carcinomatosis involving the cranial nerves

The value of 3D high-resolution IR-prepared fast spoiled gradient-recalled MRI in the diagnosis of meningeal carcinomatosis involving the cranial nerves

Patterns of Gray and White Matter Volume Alterations in Patients With Post-Traumatic Anosmia: A Voxel-Based Morphometry Study

2D and 3D structures of the whole-brain, directly visible from 100-µm slice 7TMRI images

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