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• Spontaneous Regression of Cranial Vault Lymphoma: A Case Report.

  Kishaba K, Hokama Y, Kuninaka T, Miyahira H, Tomita M, Wada N, Yogi A, Hamasaki T

  Cureus   17 ( 7 ) e87472   2025.07 [ Peer Review Accepted ]

  Type of publication: Research paper (scientific journal)

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• Low-degree rotation and chin-up head position for resection of glioblastomas extending into the medial part of the temporal lobe.

  Inoue H, Kuroda JI, Hamasaki T, Mukasa A

  Surgical neurology international ( Surgical Neurology International )  16   285   2025 [ Peer Review Accepted ]

  Type of publication: Research paper (scientific journal)

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• Effect of deep learning-based reconstruction on high-resolution three-dimensional T2-weighted fast asymmetric spin-echo imaging in the preoperative evaluation of cerebellopontine angle tumors.

  Masamichi Hokamura, Hiroyuki Uetani, Tadashi Hamasaki, Takeshi Nakaura, Kosuke Morita, Yuichi Yamashita, Mika Kitajima, Aki Sugitani, Akitake Mukasa, Toshinori Hirai

  Neuroradiology     2024.03 [ Peer Review Accepted ]

  Type of publication: Research paper (scientific journal)

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  PURPOSE: We aimed to evaluate the effect of deep learning-based reconstruction (DLR) on high-spatial-resolution three-dimensional T2-weighted fast asymmetric spin-echo (HR-3D T2-FASE) imaging in the preoperative evaluation of cerebellopontine angle (CPA) tumors. METHODS: This study included 13 consecutive patients who underwent preoperative HR-3D T2-FASE imaging using a 3 T MRI scanner. The reconstruction voxel size of HR-3D T2-FASE imaging was 0.23 × 0.23 × 0.5 mm. The contrast-to-noise ratios (CNRs) of the structures were compared between HR-3D T2-FASE images with and without DLR. The observers' preferences based on four categories on the tumor side on HR-3D T2-FASE images were evaluated. The facial nerve in relation to the tumor on HR-3D T2-FASE images was assessed with reference to intraoperative findings. RESULTS: The mean CNR between the tumor and trigeminal nerve and between the cerebrospinal fluid and trigeminal nerve was significantly higher for DLR images than non-DLR-based images (14.3 ± 8.9 vs. 12.0 ± 7.6, and 66.4 ± 12.0 vs. 53.9 ± 8.5, P < 0.001, respectively). The observer's preference for the depiction and delineation of the tumor, cranial nerves, vessels, and location relation on DLR HR-3D T2FASE images was superior to that on non-DLR HR-3D T2FASE images in 7 (54%), 6 (46%), 6 (46%), and 6 (46%) of 13 cases, respectively. The facial nerves around the tumor on HR-3D T2-FASE images were visualized accurately in five (38%) cases with DLR and in four (31%) without DLR. CONCLUSION: DLR HR-3D T2-FASE imaging is useful for the preoperative assessment of CPA tumors.

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• A Case of Trigeminal Neuralgia in an Adult Patient With Lambdoid Synostosis.

  Shunsuke Izumi, Tatsya Takezaki, Yuki Takeshima, Tadashi Hamasaki, Akitake Mukasa

  Cureus   16 ( 3 ) e56918   2024.03 [ Peer Review Accepted ]

  Type of publication: Research paper (other science council materials etc.)

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  Trigeminal neuralgia (TN) is characterized by sudden, brief intense pain in the distribution of the unilateral trigeminal nerve (TGN). Neurovascular compression (NVC) of the TGN is the most common cause of TN. Recent studies have suggested that a structural anomaly of the posterior cranial fossa might be involved in the development of TN, and several studies have documented the association between NVC-related TN and congenital posterior cranial deformities in adults. We present the case of a 56-year-old woman with NVC-related TN and unilateral lambdoid synostosis (ULS), along with a literature review, to investigate the relationship between TN and structural anomalies of the posterior fossa. This is the first report of TN in an adult with ULS. Mild and asymptomatic cases of lambdoid synostosis might have a higher incidence of NVC-related TN in association with posterior cranial fossa deformities.

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• A Consideration of Optimal Head Position in Transsylvian Selective Amygdalohippocampectomy.

  Tadashi Hamasaki, Hiroki Uchikawa, Tatsuya Kawano, Keitaro Kai, Tastuya Takezaki, Akitake Mukasa

  Neurologia medico-chirurgica   63 ( 7 ) 265 - 272   2023.07 [ Peer Review Accepted ]

  Type of publication: Research paper (scientific journal)

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  Transsylvian selective amygdalohippocampectomy (TSA) is one of the predominant surgical options for drug-resistant mesial temporal lobe epilepsy. The purpose of this article is to highlight the unique features of TSA and determine the setting to perform safe and secure TSA with special reference to the optimal head position. TSA should be performed via a small surgical corridor in the temporal stem that contains functionally important fiber tracts, including the uncinate fasciculus, the inferior fronto-occipital fasciculus, and the optic radiation. Graphical simulations proposed that low-degree (<30°) head rotation had the advantage of sufficiently opening the surgical field in TSA and may help surgical procedures within the limited exposure of the medial temporal structures. Inspection of the surgical videos implied that the collapse of the inferior horn was prevented in low-degree rotation, probably because the deformation due to the brain shift was minimized in the medial temporal structures. A simulation also implied that chin-up position had the advantage of resecting the tail of the hippocampus in a straightforward manner. We suggest that the setting is optimized in TSA with low-degree rotation and chin-up head position.

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Other Papers 【 display / non-display 】

Other Papers 【 display / non-display 】

• Seizure findings in patients with epilepsy and concomitant psychogenic non-epileptic seizures

  松原崇一朗, 宮野遼太朗, 甲斐恵太郎, 浜崎禎, 原田美保, 植田光晴

  てんかん研究   42 ( 2 )   2024  [Refereed]

   

  J-GLOBAL

• Three cases of occipital lobe epilepsy under surgical treatment

  甲斐恵太郎, 浜崎禎, 出来田裕治, 河野達哉, 山本隆広, 竹崎達也, 武笠晃丈

  日本てんかん外科学会プログラム・抄録集   46th   2023  [Refereed]

   

  J-GLOBAL

• Psychiatric symptoms in temporal lobe epilepsy surgery: a retrospective review by neurosurgeons

  浜崎禎, 松原崇一朗, 竹林実, 朴秀賢, 甲斐恵太郎, 浦野真未, 原田美保, 武笠晃丈

  てんかん研究   41 ( 2 )   2023  [Refereed]

   

  J-GLOBAL

• Analysis of clinical characteristics and EEG findings in patients with mitochondrial disorder

  松原崇一朗, 原田美保, 浜崎禎, 植田光晴

  てんかん研究   40 ( 2 )   2022  [Refereed]

   

  J-GLOBAL

• Approach to the inferior horn of the lateral ventricle in trans-sylvian amygdalohippocampectomy: a consideration on the head position

  浜崎禎, 内川裕貴, 竹崎達也, 河野達哉, 武笠晃丈

  日本てんかん外科学会プログラム・抄録集   45th   2022  [Refereed]

   

  J-GLOBAL

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Grant-in-Aid for Scientific Research 【 display / non-display 】

Grant-in-Aid for Scientific Research 【 display / non-display 】

• Development and implementation of monitoring system for neurological emergency in Smart Hospital

  Grant-in-Aid for Scientific Research(C)

  Project Year: 2023.04  -  2027.03 

  Direct: 3,700,000 (YEN)  Overheads: 4,810,000 (YEN)  Total: 1,110,000 (YEN)