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Masahiro Izawa

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Mikhail F Chernov; Sergey V Diment; Motohiro Hayashi; Tomokatsu Hori; Hiroshi Iseki; Pavel I Ivanov; Masahiro Izawa; Yoshihiro Muragaki; Yoshikazu Okada; Yuko Ono; Kayoko Abe; Masao Usukura; Kintomo Takakura
Differentiation of tumor progression and radiation-induced effects after intracranial radiosurgery.
Motohiro Hayashi; Ayako Horiba; Hiroshi Iseki; Pavel Ivanov; Masahiro Izawa; Yoshihiro Muragaki; Yoshikazu Okada; Jean Régis; Manabu Tamura; Noriko Tamura; Shoji Yomo; Mikhail F Chernov; Kintomo Takakura
Usefulness of the advanced neuroimaging protocol based on plain and gadolinium-enhanced constructive interference in steady state images for gamma knife radiosurgery and planning microsurgical procedures for skull base tumors.
Kintomo Takakura; Manabu Tamura; Noriko Tamura; Mikhail F Chernov; Motohiro Hayashi; Masahiro Izawa; Yoshihiro Muragaki; Yoshikazu Okada; Hiroshi Iseki
Gamma knife treatment strategy for metastatic brain tumors.

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2013: Mikhail F Chernov; Sergey V Diment; Motohiro Hayashi; Tomokatsu Hori; Hiroshi Iseki; Pavel I Ivanov; Masahiro Izawa; Yoshihiro Muragaki; Yoshikazu Okada; Yuko Ono; Kayoko Abe; Masao Usukura; Kintomo Takakura
Differentiation of tumor progression and radiation-induced effects after intracranial radiosurgery.
Acta neurochirurgica. Supplement 2013;116():193-210.
2013: Motohiro Hayashi; Ayako Horiba; Hiroshi Iseki; Pavel Ivanov; Masahiro Izawa; Yoshihiro Muragaki; Yoshikazu Okada; Jean Régis; Manabu Tamura; Noriko Tamura; Shoji Yomo; Mikhail F Chernov; Kintomo Takakura
Usefulness of the advanced neuroimaging protocol based on plain and gadolinium-enhanced constructive interference in steady state images for gamma knife radiosurgery and planning microsurgical procedures for skull base tumors.
Acta neurochirurgica. Supplement 2013;116():167-78.
2013: Kintomo Takakura; Manabu Tamura; Noriko Tamura; Mikhail F Chernov; Motohiro Hayashi; Masahiro Izawa; Yoshihiro Muragaki; Yoshikazu Okada; Hiroshi Iseki
Gamma knife treatment strategy for metastatic brain tumors.
Acta neurochirurgica. Supplement 2013;116():63-9.
2013: Motohiro Hayashi; Ayako Horiba; Hiroshi Iseki; Pavel Ivanov; Masahiro Izawa; Samuel M Lipski; Yoshihiro Muragaki; Yoshikazu Okada; Jean Régis; Noriko Tamura; Shyunsuke Tsuzuki; Shoji Yomo; Mikhail F Chernov; Kintomo Takakura
Do we really still need an open surgery for treatment of patients with vestibular schwannomas?
Acta neurochirurgica. Supplement 2013;116():25-36.
2013: Motohiro Hayashi; Hiroshi Iseki; Pavel Ivanov; Masahiro Izawa; Yoshihiro Muragaki; Yoshikazu Okada; Jean Régis; Mikhail F Chernov; Noriko Tamura; Kintomo Takakura
Concept of robotic gamma knife microradiosurgery and results of its clinical application in benign skull base tumors.
Acta neurochirurgica. Supplement 2013;116():5-15.
2011: Matsuhiko Hayashi; Hiroshi Iseki; Masahiro Izawa; Yoshihiro Muragaki; M Tamura; N Tamura; Mikhail F Chernov; Yoshikazu Okada
"Donut's shape" radiosurgical treatment planning for large cystic metastatic brain tumors.
Minimally invasive neurosurgery : MIN 2011;54(5-6):286-9.
2011: Motohiro Hayashi; Hiroshi Iseki; Pavel Ivanov; Masahiro Izawa; Yoshihiro Muragaki; Mariko Nagai; Yoshikazu Okada; Takaomi Taira; Cheng-Siu Chang; Mikhail Chernov; Manabu Tamura; Noriko Tamura; Shoji Yomo; Kintomo Takakura
Stereotactic radiosurgery of essential trigeminal neuralgia using Leksell Gamma Knife model C with automatic positioning system: technical nuances and evaluation of outcome in 130 patients with at least 2 years follow-up after treatment.
Neurosurgical review 2011;34(4):497-508.
2011: Motohiro Hayashi; Mikhail Chernov; Noriko Tamura; Masahiro Izawa; Yoshihiro Muragaki; Hiroshi Iseki; Yoshikazu Okada; Kintomo Takakura
Gamma knife robotic microradiosurgery for benign skull base meningiomas: tumor shrinkage may depend on the amount of radiation energy delivered per lesion volume (unit energy).
Stereotactic and functional neurosurgery 2011;89(1):6-16.
2010: Motohiro Hayashi; Mikhail F Chernov; Noriko Tamura; Shoji Yomo; Taku Ochiai; Mariko Nagai; Manabu Tamura; Masahiro Izawa; Yoshihiro Muragaki; Hiroshi Iseki; Yoshikazu Okada; Kintomo Takakura
Gamma Knife surgery for abducent nerve schwannoma. Report of 4 cases.
Journal of neurosurgery 2010;113 Suppl():136-43.
2010: Motohiro Hayashi; Mikhail F Chernov; Noriko Tamura; Mariko Nagai; Shoji Yomo; Taku Ochiai; Kosaku Amano; Masahiro Izawa; Tomokatsu Hori; Yoshihiro Muragaki; Hiroshi Iseki; Yoshikazu Okada; Kintomo Takakura
Gamma Knife robotic microradiosurgery of pituitary adenomas invading the cavernous sinus: treatment concept and results in 89 cases.
Journal of neuro-oncology 2010;98(2):185-94.
2009: Kotaro Nakaya; Mikhail F Chernov; Hidetoshi Kasuya; Masahiro Izawa; Matsuhiko Hayashi; Koichi Kato; Osami Kubo; Yoshihiro Muragaki; Hiroshi Iseki; Tomokatsu Hori; Yoshikazu Okada; Kintomo Takakura
Risk factors for regrowth of intracranial meningiomas after gamma knife radiosurgery: importance of the histopathological grade and MIB-1 index.
Minimally invasive neurosurgery : MIN 2009;52(5-6):216-21.
2009: Shoji Yomo; Motohiro Hayashi; Mikhail F Chernov; Noriko Tamura; Masahiro Izawa; Yoshikazu Okada; Tomokatsu Hori; Hiroshi Iseki
Stereotactic radiosurgery of residual or recurrent craniopharyngioma: new treatment concept using Leksell gamma knife model C with automatic positioning system.
Stereotactic and functional neurosurgery 2009;87(6):360-7.
2008: P Ivanov; Mikhail F Chernov; Motohiro Hayashi; Kotaro Nakaya; Masahiro Izawa; N Murata; Osami Kubo; H Ujiie; Yoshihiro Muragaki; Ryoichi Nakamura; Hiroshi Iseki; Tomokatsu Hori; Kintomo Takakura
Low-dose gamma knife radiosurgery for cavernous sinus hemangioma: report of 3 cases and literature review.
Minimally invasive neurosurgery : MIN 2008;51(3):140-6.
2007: Motohiro Hayashi; Mikhail F Chernov; Takaomi Taira; Taku Ochiai; Kotaro Nakaya; Noriko Tamura; Shinichi Goto; Shoji Yomo; Nobuo Kouyama; Yoko Katayama; Yoriko Kawakami; Masahiro Izawa; Yoshihiro Muragaki; Ryoichi Nakamura; Hiroshi Iseki; Tomokatsu Hori; Kintomo Takakura
Outcome after pituitary radiosurgery for thalamic pain syndrome.
International journal of radiation oncology, biology, physics 2007;69(3):852-7.
2007: Masahiro Izawa; Mikhail F Chernov; Motohiro Hayashi; Kotaro Nakaya; Shuji Kamikawa; Koichi Kato; Takashi Higa; Hiroshi Ujiie; Hidetoshi Kasuya; Takakazu Kawamata; Yoshikazu Okada; Osami Kubo; Hiroshi Iseki; Tomokatsu Hori; Kintomo Takakura
Management and prognosis of cysts developed on long-term follow-up after Gamma Knife radiosurgery for intracranial arteriovenous malformations.
Surgical neurology 2007;68(4):400-6; discussion 406.
2007: Mikhail F Chernov; Motohiro Hayashi; Masahiro Izawa; Kotaro Nakaya; Yuko Ono; Masao Usukura; S Yoshida; K Kato; Yoshihiro Muragaki; R Nakamura; Hiroshi Iseki; Tomokastu Hori; Kintomo Takakura
Metabolic characteristics of intracranial metastases, detected by single-voxel proton magnetic resonance spectroscopy, are seemingly not predictive for tumor response to gamma knife radiosurgery.
Minimally invasive neurosurgery : MIN 2007;50(4):233-8.
2007: Mikhail F Chernov; Kotaro Nakaya; Masahiro Izawa; Motohiro Hayashi; Yuki Usuba; Koichi Kato; Yoshihiro Muragaki; Hiroshi Iseki; Tomokatsu Hori; Kintomo Takakura
Outcome after radiosurgery for brain metastases in patients with low Karnofsky performance scale (KPS) scores.
International journal of radiation oncology, biology, physics 2007;67(5):1492-8.
2006: Kotaro Nakaya; Motohiro Hayashi; Masahiro Izawa; Taku Ochiai; Tomokatsu Hori; Kintomo Takakura
How soon will the patient with metastasis return for radiosurgery?
Journal of neurosurgery 2006;105 Suppl():82-5.
2006: Motohiro Hayashi; Taku Ochiai; Kotaro Nakaya; Mikhail Chernov; Noriko Tamura; Shoji Yomo; Masahiro Izawa; Tomokatsu Hori; Kintomo Takakura; Jean Regis
Image-guided microradiosurgery for skull base tumors: advantages of using gadolinium-enhanced constructive interference in steady-state imaging.
Journal of neurosurgery 2006;105 Suppl():12-7.
2006: Motohiro Hayashi; Taku Ochiai; Kotaro Nakaya; Mikhail Chernov; Noriko Tamura; Takashi Maruyama; Shoji Yomo; Masahiro Izawa; Tomokatsu Hori; Kintomo Takakura; Jean Regis
Current treatment strategy for vestibular schwannoma: image-guided robotic microradiosurgery.
Journal of neurosurgery 2006;105 Suppl():5-11.
2006: Mikhail F Chernov; Motohiro Hayashi; Masahiro Izawa; Yuko Ono; Tomokatsu Hori
Proton magnetic resonance spectroscopy (MRS) of metastatic brain tumors: variations of metabolic profile.
International journal of clinical oncology 2006;11(5):375-84.
2006: Masahiro Izawa; Mikhail F Chernov; Motohiro Hayashi; Y Kubota; Hidetoshi Kasuya; Tomokastu Hori
Fatal intratumoral hemorrhage immediately after gamma knife radiosurgery for brain metastases: case report.
Minimally invasive neurosurgery : MIN 2006;49(4):251-4.
2006: Mikhail F Chernov; Motohiro Hayashi; Masahiro Izawa; Masao Usukura; Shimetoshi Yoshida; Yuko Ono; Yoshihiro Muragaki; Osami Kubo; Tomokatsu Hori; Kintomo Takakura
Multivoxel proton MRS for differentiation of radiation-induced necrosis and tumor recurrence after gamma knife radiosurgery for brain metastases.
Brain tumor pathology 2006;23(1):19-27.
2005: Osami Kubo; Mikhail F Chernov; Masahiro Izawa; Motohiro Hayashi; Yoshihiro Muragaki; T Maruyama; Tomokastu Hori; Kintomo Takakura
Malignant progression of benign brain tumors after gamma knife radiosurgery: is it really caused by irradiation?
Minimally invasive neurosurgery : MIN 2005;48(6):334-9.
2005: Motohiro Hayashi; Masahiro Izawa; Taku Ochiai; Tomokatsu Hori
[Gamma knife surgery for metastatic brain tumors].
Nihon rinsho. Japanese journal of clinical medicine 2005;63 Suppl 9():623-32.
2005: Mikhail F Chernov; Motohiro Hayashi; Masahiro Izawa; T Ochiai; Masao Usukura; Kayoko Abe; Yuko Ono; Yoshihiro Muragaki; Osami Kubo; Tomokastu Hori; Kintomo Takakura
Differentiation of the radiation-induced necrosis and tumor recurrence after gamma knife radiosurgery for brain metastases: importance of multi-voxel proton MRS.
Minimally invasive neurosurgery : MIN 2005;48(4):228-34.
2005: Mikhail F Chernov; Osami Kubo; Motohiro Hayashi; Masahiro Izawa; Takashi Maruyama; Masao Usukura; Yuko Ono; Tomokatsu Hori; Kintomo Takakura
Proton MRS of the peritumoral brain.
Journal of the neurological sciences 2005;228(2):137-42.
2005: Mikhail F Chernov; Yoshihiro Muragaki; Taku Ochiai; Takashi Maruyama; Masahiro Izawa; Motohiro Hayashi; Yuko Ono; Osami Kubo; Tomokatsu Hori
Spectroscopy and navigation.
Journal of neurosurgery 2005;102(2):402-3; author reply 403.
2005: Motohiro Hayashi; Mikhail F Chernov; Masao Usukura; Kayoko Abe; Yuko Ono; Masahiro Izawa; Sadao Hori; Tomokatsu Hori; Kintomo Takakura
Gamma knife surgery for choroidal neovascularization in age-related macular degeneration. Technical note.
Journal of neurosurgery 2005;102 Suppl():200-3.
2005: Motohiro Hayashi; Takaomi Taira; Taku Ochiai; Mikhail F Chernov; Yuichi Takasu; Masahiro Izawa; Nobuo Kouyama; Mihoko Tomida; Osamu Tokumaru; Yoko Katayama; Yoriko Kawakami; Tomokatsu Hori; Kintomo Takakura
Gamma knife surgery of the pituitary: new treatment for thalamic pain syndrome.
Journal of neurosurgery 2005;102 Suppl():38-41.
2005: Masahiro Izawa; Motohiro Hayashi; Mikhail F Chernov; Kotaro Nakaya; Taku Ochiai; Noriko Murata; Yuchii Takasu; Osami Kubo; Tomokatsu Hori; Kintomo Takakura
Long-term complications after gamma knife surgery for arteriovenous malformations.
Journal of neurosurgery 2005;102 Suppl():34-7.
2004: Mikhail F Chernov; Shuji Kamikawa; R Toledo; Fumitaka Yamane; Masahiro Izawa; Motohiro Hayashi; Yoshihiro Muragaki; Tomokastu Hori
Minimally invasive management of the third ventricle glioma in a patient without hydrocephalus: neurofiberscopic biopsy followed by gamma knife radiosurgery.
Minimally invasive neurosurgery : MIN 2004;47(4):238-41.
2004: Motohiro Hayashi; Masahiro Izawa
[Gamma knife surgery].
Nihon rinsho. Japanese journal of clinical medicine 2004;62(4):677-88.
2004: Mikhail F Chernov; Motohiro Hayashi; Masahiro Izawa; Kayoko Abe; Masao Usukura; Yuko Ono; Osami Kubo; Tomokatsu Hori
Early metabolic changes in metastatic brain tumors after Gamma Knife radiosurgery: 1H-MRS study.
Brain tumor pathology 2004;21(2):63-7.
2003: Motohiro Hayashi; Takaomi Taira; Mikhail F Chernov; Masahiro Izawa; Roman Liscak; Chung Ping Yu; Robert T K Ho; Yoko Katayama; Nobuo Kouyama; Yoriko Kawakami; Tomokatsu Hori; Kintomo Takakura
Role of pituitary radiosurgery for the management of intractable pain and potential future applications.
Stereotactic and functional neurosurgery 2003;81(1-4):75-83.
2001: M Takeshita; Takakazu Kawamata; Masahiro Izawa; Tomokastu Hori
Prodromal signs and clinical factors influencing outcome in patients with intraventricular rupture of purulent brain abscess.
Neurosurgery 2001;48(2):310-6; discussion 316-7.
2000: Atsushi Sasahara; Hidetoshi Kasuya; A Kawashima; Yasuo Aihara; Masahiro Izawa; Tomokastu Hori
[The efficacy and safety of the nicardipine prolonged-release implant in a canine double hemorrhage model].
No shinkei geka. Neurological surgery 2000;28(12):1071-5.
2000: Masahiro Izawa; Motohiro Hayashi; Kotaro Nakaya; H Satoh; Taku Ochiai; Tomokastu Hori; Kintomo Takakura
Gamma knife radiosurgery for pituitary adenomas.
Journal of neurosurgery 2000;93 Suppl 3():19-22.
2000: A Kawashima; Hidetoshi Kasuya; Atsushi Sasahara; M Miyajima; Masahiro Izawa; Tomokastu Hori
Prevention of cerebral vasospasm by nicardipine prolonged-release implants in dogs.
Neurological research 2000;22(6):634-41.
2000: Yoshinori Tamano; Hiroshi Ujiie; Kuri Sasaki; Masahiro Izawa; K Satoh; Tomokastu Hori
[Non-traumatic dissecting aneurysms on the intracranial internal carotid artery: report of three cases].
No shinkei geka. Neurological surgery 2000;28(1):53-9.
1999: Matsuhiko Hayashi; Masahiro Izawa; H Hiyama; S Nakamura; S Atsuchi; H Sato; K Nakaya; K Sasaki; Taku Ochiai; Osami Kubo; Tomokastu Hori; Kintomo Takakura
Gamma Knife radiosurgery for pituitary adenomas.
Stereotactic and functional neurosurgery 1999;72 Suppl 1():111-8.
1999: K Nakaya; Matsuhiko Hayashi; S Nakamura; S Atsuchi; H Sato; T Ochial; M Yamamoto; Masahiro Izawa; Tomokastu Hori; Kintomo Takakura
Low-dose radiosurgery for meningiomas.
Stereotactic and functional neurosurgery 1999;72 Suppl 1():67-72.
1998: Yoshinori Tamano; Y Iwata; M Baba; Masahiro Izawa; Kintomo Takakura
[Spontaneous resolution of idiopathic spinal subdural hematoma: case report].
No shinkei geka. Neurological surgery 1998;26(11):1013-8.
1998: Yoshinori Tamano; Y Usuda; Hiroshi Ujiie; Masahiro Izawa; K Ishii; Kintomo Takakura
[Usefulness of positron emission tomography to STA-MCA anastomosis for the case with cerebral infarction].
No shinkei geka. Neurological surgery 1998;26(6):532-8.
1998: Fumitaka Yamane; M Takeshita; Masahiro Izawa; M Kagawa; K Sato; Kintomo Takakura
Natural history of arteriovenous malformations: analysis of non-radically treated patients.
Journal of clinical neuroscience : official journal of the Neurosurgical Society of Australasia 1998;5 Suppl():26-9.
1998: Mikihiko Takeshita; M Kagawa; Masahiro Izawa; Kintomo Takakura
Current treatment strategies and factors influencing outcome in patients with bacterial brain abscess.
Acta neurochirurgica 1998;140(12):1263-70.
1998: A Kawashima; Hidetoshi Kasuya; K Shiokawa; M Miyajima; Masahiro Izawa; Kintomo Takakura
[Efficacy of nicardipine prolonged-release pellet on cerebral vasospasm in dogs].
No shinkei geka. Neurological surgery 1998;26(1):37-43.
1998: K Shiokawa; Hidetoshi Kasuya; M Miyajima; Masahiro Izawa; Kintomo Takakura
Prophylactic effect of papaverine prolonged-release pellets on cerebral vasospasm in dogs.
Neurosurgery 1998;42(1):109-15; discussion 115-6.
1996: H Wanifuchi; M Takeshita; N Aoki; T Kawamata; K Shiokawa; Masahiro Izawa; M Kagawa; Kintomo Takakura
Adult moyamoya disease progressing from unilateral to bilateral involvement .
Neurologia medico-chirurgica 1996;36(2):87-90.
1996: H Hiyama; K Arai; Masahiro Izawa; Kintomo Takakura
[Stereotactic radiosurgery for the treatment of brain metastases].
Nō to shinkei = Brain and nerve 1996;48(2):113-9.
1996: S Nakamura; H Hiyama; K Arai; K Nakaya; H Sato; M Hayashi; T Kawamata; Masahiro Izawa; Kintomo Takakura
Gamma Knife radiosurgery for meningiomas: four cases of radiation-induced edema.
Stereotactic and functional neurosurgery 1996;66 Suppl 1():142-5.
1995: T Kawamata; M Takeshita; Osami Kubo; Masahiro Izawa; M Kagawa; Kintomo Takakura
Management of intracranial hemorrhage associated with anticoagulant therapy.
Surgical neurology 1995;44(5):438-42; discussion 443.
1994: M Takeshita; Osami Kubo; H Hiyama; Y Tajika; Masahiro Izawa; M Kagawa; Kintomo Takakura; N Kobayashi; M Toyoda
Magnetic resonance imaging and quantitative analysis of contents of epidermoid and dermoid cysts.
Neurologia medico-chirurgica 1994;34(7):436-9.
1994: T Kawamata; M Takeshita; H Ujiie; K Sato; Masahiro Izawa; M Kagawa; Kintomo Takakura
Acetylcholine determination of cerebrospinal fluid in aneurysmal subarachnoid hemorrhage.
Surgical neurology 1994;41(5):399-404.
1993: M Takeshita; Osami Kubo; Y Tajika; Masahiro Izawa; M Kagawa
Immunohistochemical detection of carbohydrate determinant 19-9 (CA 19-9) in intracranial epidermoid and dermoid cysts.
Surgical neurology 1993;40(4):284-8.
1993: H Wanifuchi; M Takeshita; Masahiro Izawa; N Aoki; M Kagawa
Management of adult moyamoya disease.
Neurologia medico-chirurgica 1993;33(5):300-5.
1992: M Takeshita; Masahiro Izawa; Osami Kubo; T Tanikawa; H Onda; H Wanifuchi; Y Tamura; M Kagawa
Aspergillotic aneurysm formation of cerebral artery following neurosurgical operation.
Surgical neurology 1992;38(2):146-51.
1992: M Takeshita; M Kagawa; H Yonetani; Masahiro Izawa; S Yato; T Nakanishi; K Monma
Risk factors for brain abscess in patients with congenital cyanotic heart disease.
Neurologia medico-chirurgica 1992;32(9):667-70.
1991: M Takeshita; M Kagawa; Osami Kubo; S Yato; K Satoh; H Ujiie; H Kasuya; Masahiro Izawa
Clinicopathological study of bacterial intracranial aneurysms.
Neurologia medico-chirurgica 1991;31(8):508-13.
1991: T Kawamata; M Kagawa; Osami Kubo; M Takeshita; Hiroshi Ujiie; K Sato; Masahiro Izawa
[Clinicopathological studies of three cases of cerebral aneurysms associated with systemic lupus erythematosus].
No shinkei geka. Neurological surgery 1991;19(7):633-9.
1989: N Aoki; M Kagawa; H Wanifuchi; M Takeshita; Masahiro Izawa; K Kitamura
[An adult case of moyamoya disease associated with marked advance of occlusive lesion in the bilateral carotid system].
No shinkei geka. Neurological surgery 1989;17(4):399-403.
1988: H Wanifuchi; M Kagawa; M Takeshita; Masahiro Izawa; K Kitamura
Ischemic stroke in infancy, childhood, and adolescence.
Child's nervous system : ChNS : official journal of the International Society for Pediatric Neurosurgery 1988;4(6):361-4.