Publications by authors named "Ryoko Umaba"

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Endoscopic Parasagittal Vertical Hemispherotomy: A 2-Dimensional Operative Video.
Saya Koh, Takehiro Uda, Noritsugu Kunihiro, Ryoko Umaba, Kotaro Ishimoto

Oper Neurosurg· October 2025

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Preoperative interhemispheric coherence as a potential predictive marker for seizure outcome after total corpus callosotomy in nonlesional generalized epilepsy: a scalp EEG study.
Vich Yindeedej, Takehiro Uda, Shugo Nishijima, Takeshi Inoue, Ichiro Kuki, Ryoko Umaba

J Neurosurg Pediatr· February 2025

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A study of the cerebral venous drainage patterns in craniosynostosis: nonsyndromic cases and the induction effect of Virchow's law on venous sinuses.
Vich Yindeedej, Hiroaki Sakamoto, Noritsugu Kunihiro, Ryoko Umaba, Tomohisa Okuma

J Neurosurg Pediatr· February 2025

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Location-based selection of the surgical approach to preserve the hippocampus in lesion-associated temporal lobe epilepsy.
Shugo Nishijima, Takehiro Uda, Vich Yindeedej, Toshiyuki Kawashima, Yuta Tanoue, Ryoko Umaba

Clin Neurol Neurosurg· November 2024

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Vertical Parasagittal Hemispherotomy.
Vich Yindeedej, Takehiro Uda, Noritsugu Kunihiro, Ryoko Umaba, Masanari Takagawa

World Neurosurg· September 2024

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Awake Craniotomy in Epilepsy Surgery: A Case Series and Proposal for Three Different Scenarios.
Takehiro Uda, Yuta Tanoue, Toshiyuki Kawashima, Vich Yindeedej, Shugo Nishijima, Ryoko Umaba

Brain Sci· September 2024

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Changes in interhemispheric coherence after total corpus callosotomy: a scalp EEG study in children with non-lesional generalized epilepsy.
Vich Yindeedej, Takehiro Uda, Shugo Nishijima, Takeshi Inoue, Ichiro Kuki, Ryoko Umaba

Childs Nerv Syst· August 2024

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Characteristics of malignant brain tumor-associated epileptic spasms.
Naoki Yamada, Ichiro Kuki, Masataka Fukuoka, Megumi Nukui, Takeshi Inoue, Ryoko Umaba

Epileptic Disord· August 2024

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Use of an Endoscope Reduces the Size of Craniotomy Without Increasing Operative Time Compared With Conventional Microscopic Corpus Callosotomy.
Vich Yindeedej, Takehiro Uda, Toshiyuki Kawashima, Saya Koh, Yuta Tanoue, Ryoko Umaba

Oper Neurosurg· December 2023

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Comparing late-onset epileptic spasm outcomes after corpus callosotomy and subsequent disconnection surgery between post-encephalitis/encephalopathy and non-encephalitis/encephalopathy.
Takeshi Inoue, Ichiro Kuki, Takehiro Uda, Noritsugu Kunihiro, Ryoko Umaba

Epilepsia Open· June 2023

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Limited dorsal myeloschisis associated with intramedullary infantile hemangioma in the conus medullaris: illustrative case.
Yoko Nakanishi, Noritsugu Kunihiro, Ryoko Umaba, Yasuhiro Matsusaka, Takeshi Inoue

J Neurosurg Case Lessons· April 2023

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How to disconnect the splenium and fornix in posterior quadrant disconnection, hemispherotomy, and subtotal hemispherotomy.
Hiroshi Uda, Takehiro Uda, Noritsugu Kunihiro, Kosuke Nakajo, Ryoko Umaba

Acta Neurochir (Wien)· March 2023

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[Surgical Treatment of Mesial Temporal Lobe Epilepsy Focusing on Anatomical Understanding].
Takehiro Uda, Noritsugu Kunihiro, Yuta Tanoue, Yuichiro Kojima, Toshiyuki Kawashima, Ryoko Umaba

No Shinkei Geka· January 2023

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Primary Experiences with Robot-assisted Navigation-based Frameless Stereo-electroencephalography: Higher Accuracy than Neuronavigation-guided Manual Adjustment.
Yuichiro Kojima, Takehiro Uda, Toshiyuki Kawashima, Saya Koh, Masato Hattori, Ryoko Umaba

Neurol Med Chir (Tokyo)· August 2022

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Disconnection surgery to cure or palliate medically intractable epileptic spasms: a retrospective study.
Saya Koh, Takehiro Uda, Noritsugu Kunihiro, Ichiro Kuki, Takeshi Inoue, Ryoko Umaba

J Neurosurg Pediatr· June 2022

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Surgical Aspects of Corpus Callosotomy.
Takehiro Uda, Noritsugu Kunihiro, Ryoko Umaba, Saya Koh, Toshiyuki Kawashima

Brain Sci· December 2021

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Monosynaptic connection from the subiculum to medial mammillary nucleus neurons projecting to the anterior thalamus and Gudden's ventral tegmental nucleus.
Ryoko Umaba, Takuma Kitanishi, Kenji Mizuseki

Neurosci Res· October 2021

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Robust information routing by dorsal subiculum neurons.
Takuma Kitanishi, Ryoko Umaba, Kenji Mizuseki

Sci Adv· March 2021

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Anatomic Understanding of Subtotal Hemispherotomy Using Cadaveric Brain, 3-Dimensional Simulation Models, and Intraoperative Photographs.
Takehiro Uda, Noritsugu Kunihiro, Saya Koh, Yoko Nakanishi, Kosuke Nakajo, Ryoko Umaba

Oper Neurosurg· June 2020

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Adult-Onset Mixed Germ Cell Tumor Composed Mainly of Yolk Sac Tumor Around the Pineal Gland: A Case Report and Review of the Literature.
Hiroshi Uda, Takehiro Uda, Kosuke Nakajo, Yuta Tanoue, Takahiro Okuno, Ryoko Umaba

World Neurosurg· December 2019

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Oligodendrocytes Up-regulate the Invasive Activity of Glioblastoma Cells the Angiopoietin-2 Signaling Pathway.
Toshiyuki Kawashima, Masakazu Yashiro, Hiroaki Kasashima, Yuzo Terakawa, Takehiro Uda, Ryoko Umaba

Anticancer Res· February 2019

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Anatomic Understanding of Posterior Quadrant Disconnection from Cadaveric Brain, 3D Reconstruction and Simulation Model, and Intraoperative Photographs.
Ryoko Umaba, Takehiro Uda, Kosuke Nakajo, Toshiyuki Kawashima, Yuta Tanoue

World Neurosurg· December 2018

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Anatomic Understanding of Vertical Hemispherotomy With Cadaveric Brains and Intraoperative Photographs.
Takehiro Uda, Samantha Tamrakar, Naohiro Tsuyuguchi, Toshiyuki Kawashima, Hiroyuki Goto, Ryoko Umaba

Oper Neurosurg· December 2016

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Dural Venous System in the Cavernous Sinus: A Literature Review and Embryological, Functional, and Endovascular Clinical Considerations.
Yutaka Mitsuhashi, Koji Hayasaki, Taichiro Kawakami, Takashi Nagata, Yuta Kaneshiro, Ryoko Umaba

Neurol Med Chir (Tokyo)· June 2016

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Transcardiac retrograde transvenous embolization of proximally occluded pulmonary arteriovenous malformation.
Masaki Komiyama, Tomoya Ishiguro, Ryoko Umaba, Tsugutoshi Suzuki

Cardiovasc Intervent Radiol· June 2014

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