研究者詳細 - 田岡　俊昭

Diffusion tensor tractography of the Meyer loop in cases of temporal lobe resection for temporal lobe epilepsy: correlation between postsurgical visual field defect and anterior limit of Meyer loop on tractography. Open Access

Taoka T, Sakamoto M, Nakagawa H, Nakase H, Iwasaki S, Takayama K, Taoka K, Hoshida T, Sakaki T, Kichikawa K

AJNR. American journal of neuroradiology 29 巻 ( 7 ) 頁： 1329 - 34 2008年8月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：American Journal of Neuroradiology

BACKGROUND AND PURPOSE: Visual field defects sometimes occur after temporal resection surgery. Our purpose was to evaluate the correlation between visual field defects caused by temporal lobe resection and the degree of resection of the Meyer loop, as assessed by diffusion tensor tractography. MATERIALS AND METHODS: We examined 14 patients who underwent temporal resection for temporal lobe epilepsy. We obtained presurgical tractographies and then measured the distance between the temporal tip and the anterior limit of the Meyer loop (T-M distance). The degree of resection of the Meyer loop was defined as the distance from the anterior limit of the Meyer loop to the posterior limit of the temporal lobe resection (M-R distance). This was calculated by subtracting the T-M distance from the measured distance between the temporal tip and the posterior limit of the resection (T-R distance). RESULTS: The mean T-M distance was 36.6 mm. The interindividual variation of the distance ranged from 30.0 to 43.2 mm. Although there was no statistically significant correlation between the extent of the visual field defect and the T-R distance, there was a statistically significant correlation between the degree of the visual field defect and the M-R distance. CONCLUSION: The range of interindividual variation for the position of the Meyer loop was rather large, indicating that this variation is the key factor in visual field defects after temporal lobectomy, and the visual field defect appears to be predicted by presurgical tractography. Evaluation of the Meyer loop through the use of tractography seems to be a feasible method, which can be used to predict the visual field defect after temporal lobe resection.

DOI： 10.3174/ajnr.A1101

Initial experience of using the filter protection device during carotid artery stenting in Japan 査読有り

Takayama, K; Nakagawa, H; Iwasaki, S; Taoka, T; Miyasaka, T; Myouchin, K; Wada, T; Sakamoto, M; Fukusumi, A; Nakagawa, I; Kurokawa, S; Kichikawa, K

RADIATION MEDICINE 26 巻 ( 6 ) 頁： 348 - 354 2008年7月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：Radiation Medicine - Medical Imaging and Radiation Oncology

Purpose. No filter protection devices for carotid artery stenting (CAS) have been formally approved for use in Japan; however, as of April 2008, the Angioguard XP (AGXP) was approved. This article describes our initial results using the AGXP during CAS for the treatment of carotid artery stenosis. Material and methods. A group of 15 patients (14 men) with a mean age of 72.3 years (range 53-81 years) were treated by CAS using the AGXP. Among them, 10 were symptomatic with >50% stenosis of the common or internal carotid artery (ICA), and 5 were asymptomatic with >70% stenosis. The rates of technical success, periprocedural stroke, ICA flow impairment, filter movement, and development of new ischemic lesions on diffusion-weighted imaging (DWI) were assessed. Results. CAS using the AGXP was successful in all cases. There was one minor stroke, and flow impairment occurred in six patients. Filter movement averaged 1.9 vertebral bodies. DWI showed new ipsilateral ischemic lesions in eight of the patients. Conclusion. Initial clinical experience using the AGXP for CAS has been generally sufficient. However, attention must be paid to three problems when using the AGXP: the filter may move after placement; the filter may disturb blood flow in the ICA; and debris may pass around the filter. © 2008 Japan Radiological Society.

DOI： 10.1007/s11604-008-0239-6

Multiple cerebral aneurysms associated with Takayasu arteritis successfully treated with coil embolization

Diffusion tensor tractography of posterior cingulum and cognitive tests in Alzheimer's disease 査読有り

Kiuchi, K; Morikawa, M; Taoka, T; Kitamura, S; Nagauchi, K; Norimoto, K; Inoue, Y; Inoue, M; Kichikawa, K; Kishimoto, T

PSYCHIATRY AND CLINICAL NEUROSCIENCES 62 巻 ( 1 ) 頁： S4 - S4 2008年2月

Takayama K., Nakagawa H., Iwasaki S., Taoka T., Myouchin K., Wada T., Sakamoto M., Fukusumi A., Kurokawa S., Kichikawa K.

Radiation Medicine - Medical Imaging and Radiation Oncology 26 巻 ( 1 ) 頁： 33 - 38 2008年1月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：Radiation Medicine - Medical Imaging and Radiation Oncology

The cerebrovascular complications of Takayasu arteritis are primarily related to the presence of occlusive lesions. Cerebral aneurysms rarely occur as complications; only 18 cases have been reported thus far. The use of coil embolization to treat cerebral aneurysms occurring as a complication of Takayasu arteritis has not been previously reported. We report a case of Takayasu arteritis with a basilar tip aneurysm and a P1 segment aneurysm of the left posterior cerebral artery that were successfully treated with coil embolization. Because coil embolization for cerebral aneurysms associated with Takayasu arteritis requires the use of limited access routes that have extremely curved and tortuous courses, catheter navigation was difficult. The guide catheter, microcatheter, and guidewire must be selected and navigated with greater care than is usually required for common aneurysm embolization. © 2008 Japan Radiological Society.

DOI： 10.1007/s11604-007-0184-9

Cerebral Sinus and Venous Thrombosis Associated with von Willebrand Factor, Independently of Factor VIII.

Terashima M, Kataoka H, Horikawa H, Nakagawa H, Taoka T, Matsumoto M, Saito K, Kichikawa K, Ueno S

Clinical medicine. Case reports 1 巻頁： 29 - 32 2008年

Signal changes of superior cerebellar peduncle on fluid-attenuated inversion recovery in progressive supranuclear palsy.

Kataoka H, Tonomura Y, Taoka T, Ueno S

Parkinsonism & related disorders 14 巻 ( 1 ) 頁： 63 - 5 2008年

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：Parkinsonism and Related Disorders

Pathological changes of the superior cerebellar peduncle (SCP) can occur in PSP. We assessed the clinical history and signal changes in the SCP on fluid-attenuated inversion recovery (FLAIR) images of 12 patients with clinically probable PSP. Three control groups were studied: Parkinson's disease (PD), multiple system atrophy with predominant parkinsonian features (MSA-P), and healthy controls. Three patients who had clinically probable PSP showed increased FLAIR signals within the SCP. No subject with PD or MSA-P showed any signal changes of the SCP. The signal changes in the SCP on FLAIR may be one indicator for differentiating PSP from other parkinsonian diseases. © 2007 Elsevier Ltd. All rights reserved.

DOI： 10.1016/j.parkreldis.2007.03.001

O2-47 てんかん外科における視放線テンソル画像の有用性と問題点(画像3,一般演題(口演),てんかん制圧:新たなステージに向けて,第41回日本てんかん学会)

アルツハイマー病での側頭葉幹のテンソル解析

田岡俊昭, 森川将行, 坂本雅彦, 中川裕之, 岩崎聖, 明石敏昭, 宮坂俊輝, 高山勝年, 木内邦明, 岸本年史, 吉川公彦

認知神経科学 10 巻 ( 1 ) 頁： 39 - 42 2008年

記述言語：日本語掲載種別：研究論文（学術雑誌）出版者・発行元：認知神経科学会

【要旨】拡散テンソル法は生体内の水の拡散の程度や、異方性を解析できる手法である。一般に白質神経路の障害では、拡散能が上昇し、拡散異方性が低下する傾向にある。拡散テンソル法による拡散能・拡散異方性の検討は、拡散テンソルトラクトグラフィーと組合せることにより、解剖学的により特異的な情報を得ることができると考えられる。Alzheimer病をはじめとした神経変性疾患の評価に、本手法が有用であることが示唆される。

DOI： 10.11253/ninchishinkeikagaku1999.10.39

CiNii Research

中瀬裕之, 田村健太郎, 金永進, 平林秀裕, 榊寿右, 星田徹, 田岡俊昭

てんかん研究 25 巻 ( 3 ) 頁： 310 2007年9月

A case of infantile Alexander disease diagnosed by magnetic resonance imaging and genetic analysis

SAKAKIBARA Takafumi, TAKAHASHI Yukihiro, FUKUDA Kazuyoshi, INOUE Tomomi, KUROSAWA Tomoko, NISHIKUBO Toshiya, SHIMA Midori, TAOKA Toshiaki, AIDA Noriko, TSUJINO Seiichi, KANAZAWA Naomi, YOSHIOKA Akira

29 巻 ( 8 ) 頁： 525 - 528 2007年9月

A case of infantile Alexander disease diagnosed by magnetic resonance imaging and genetic analysis.

Sakakibara T, Takahashi Y, Fukuda K, Inoue T, Kurosawa T, Nishikubo T, Shima M, Taoka T, Aida N, Tsujino S, Kanazawa N, Yoshioka A

Brain & development 29 巻 ( 8 ) 頁： 525 - 8 2007年9月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：Brain and Development

We encountered a male infant with infantile Alexander disease presenting with megalencephaly and hydrocephalus as a neonate and subtle seizures at 3 months of age. At 6 months of age, bulbar paralysis appeared. Brain magnetic resonance imaging (MRI) showed abnormal findings with white matter involvement and a characteristic periventricular rim, satisfying the diagnostic criteria proposed by van der Knaap, except for MRI contrast. R239H mutation of glial fibrillary acidic protein gene was identified, representing a common cause of infantile-type Alexander disease. © 2007 Elsevier B.V. All rights reserved.

DOI： 10.1016/j.braindev.2007.02.002

Diffusivity and diffusion anisotropy of cerebellar peduncles in cases of spinocerebellar degenerative disease. 国際誌

Taoka T, Kin T, Nakagawa H, Hirano M, Sakamoto M, Wada T, Takayama K, Wuttikul C, Iwasaki S, Ueno S, Kichikawa K

NeuroImage 37 巻 ( 2 ) 頁： 387 - 93 2007年8月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：NeuroImage

Purpose: This study accessed the feasibility of using tractography-based analysis to evaluate the apparent diffusion coefficient (ADC) and fractional anisotropy (FA) of three cerebellar peduncles in subtypes of spinocerebellar degenerative disease. Materials and methods: We examined 7 cases of dentatorubro-pallidoluysian atrophy (DRPLA), 4 cases of multiple system atrophy, cerebellar type (MSA-C), 4 cases of late cerebellar cortical atrophy (LCCA) and 8 controls. Diffusion tensor images were obtained, and tractographies of cerebellar peduncles were generated. ADC and FA along the cerebellar peduncles and volume of cerebellar peduncle were measured, and analyses of variance were made among the control and each spinocerebellar degenerative disease groups. Results: There were statistically significant decrease in FA and volume and increase in ADC values between DRPLA cases and controls in all three cerebellar peduncles. On the other hand, MSA-C cases mainly showed statistically significant decreased FA and volume and increased ADC values in the middle cerebellar peduncle. LCCA cases did not show prominent difference in the three cerebellar peduncles. Conclusion: The values of diffusivity and diffusion anisotropy of cerebellar peduncles evaluated by tractography based measurements seem to reflect characteristics of the different types of spinocerebellar degenerative diseases. Tractography-based measurements may be a feasible tool for differential diagnosis of spinocerebellar degenerative disease. © 2007 Elsevier Inc. All rights reserved.

DOI： 10.1016/j.neuroimage.2007.05.028

Cerebral hemorrhage with angiographic extravasation immediately after carotid artery stenting

Takayama K., Nakagawa H., Iwasaki S., Taoka T., Wada T., Myouchin K., Sakamoto M., Fukusumi A., Kichikawa K.

Radiation Medicine - Medical Imaging and Radiation Oncology 25 巻 ( 7 ) 頁： 359 - 363 2007年8月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：Radiation Medicine - Medical Imaging and Radiation Oncology

Recognizing cerebral hyperperfusion syndrome with intracerebral hemorrhage following carotid artery stenting is critical because the mortality rate is high. This type of hemorrhage usually arises from within several hours to a few days after the procedure. Here we describe a putaminal hemorrhage with extravasation during angiography that developed immediately after carotid artery stenting. A search of the literature revealed only one other similar case report. The etiology of the intracerebral hemorrhage immediately after carotid stenting might be analogous to that of hypertensive hemorrhage. © 2007 Japan Radiological Society.

DOI： 10.1007/s11604-007-0147-1

正期産児の頭蓋内出血 ; 表在性脳実質および脳軟髄膜出血の2例

Parasagittal Arachnoid Markings on the Inner Skull on Three-Dimensional CT: Relation between Hydrocephalus and Arachnoid Granules.

Taoka T, Ida Y, Nakagawa H, Iwasaki S, Sakamoto M, Fukusumi A, Takayama K, Wada T, Myochin K, Wuttikul C, Kichikawa K

The neuroradiology journal 20 巻 ( 3 ) 頁： 259 - 64 2007年6月

高橋幸博, 山田佳世, 新居育世, 田岡俊昭, 釜本智之, 井上知美, 新川友子, 矢田弘史, 西久保敏也, 内田優美子, 箕輪秀樹, 安原肇, 坂東由香, 川口千晴, 扇谷綾子, 藤本京利, 朴永銖, 吉岡章

日本産婦人科・新生児血液学会誌 = The Japanese journal of obstetrical, gynecological & neonatal hematology 17 巻 ( 1 ) 頁： "S - 29"-"S-30" 2007年6月

Successful percutaneous transluminal angioplasty and stenting for symptomatic intracranial vertebral artery stenosis using intravascular ultrasound virtual histology 査読有り

Takayama K., Taoka T., Nakagawa H., Myouchin K., Wada T., Sakamoto M., Fukusumi A., Iwasaki S., Kurokawa S., Kichikawa K.

Radiation Medicine - Medical Imaging and Radiation Oncology 25 巻 ( 5 ) 頁： 243 - 246 2007年6月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：Radiation Medicine - Medical Imaging and Radiation Oncology

This is the first report of percutaneous transluminal angioplasty (PTA) of an intracranial artery applying intravascular ultrasound virtual histology (IVUS-VH), which has been recently developed for tissue characterization of coronary artery plaque. We report a case of successful PTA and stenting for symptomatic intracranial vertebral artery stenosis using IVUS-VH. © 2007 Japan Radiological Society.

DOI： 10.1007/s11604-007-0127-5

Parasagittal arachnoid markings on the inner skull on three-dimensional CT: Relation between hydrocephalus and arachnoid granules

Taoka T., Ida Y., Nakagawa H., Iwasaki S., Sakamoto M., Fukusumi A., Takayama K., Wada T., Myochin K., Wuttikul C., Kichikawa K.

Neuroradiology Journal 20 巻 ( 3 ) 頁： 259 - 264 2007年6月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：Neuroradiology Journal

The purpose of the study was to evaluate the number and size of arachnoid markings on the inner plate of the skull on 3D-CT. The subjects included 16 hydrocephalus and 26 non-hydrocephalus cases. We evaluated the correlation between age and both the number and sizes of the arachnoid markings, and compared them between hydrocephalus and non-hydrocephalus cases. We also evaluated cases exhibiting a "smooth cranium" that had no arachnoid markings at all on the inner plate. There was a positive correlation between age and the number of the arachnoid markings. There were no statistically significant differences in arachnoid markings between hydrocephalus and non-hydrocephalus cases, while, there were statistically significant differences in the frequency of "smooth cranium" findings in the population under ten years old. The "smooth cranium" can only be seen in hydrocephalus cases. These findings may be a clue to the morphological or functional changes of the arachnoid villi in hydrocephalus cases.

DOI： 10.1177/197140090702000301

Physiologic and pathologic statuses that show reduced relaxation time within the brain

Taoka T., Nakagawa H., Kichikawa K.

Japanese Journal of Clinical Radiology 52 巻 ( 4 ) 頁： 555 - 566 2007年5月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：Japanese Journal of Clinical Radiology

Pathologic tissue within the brain usually shows elongated relaxation time reflecting large water content, and result in low signals on T1 weighted images and high signals on T2 weighted images. However, there are some statuses that show reduced relaxation times. In this article, we show the mechanism of the reduce in relaxation times and we review the physiologic and pathologic status that shows high signals on T1 weighted images and low signals on T2 weighted images.