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  2. hayakawa motoharu

hayakawa motoharu

  (早川 基治)

Profile Information

Affiliation
Professor, School of Medicine Faculty of Medicine, Fujita Health University
Degree
医学博士
J-GLOBAL ID
200901073226457742
researchmap Member ID
1000289360

Research Areas

 2

Research History

 1

Papers

 66
  • Kei Yamashiro, Motoharu Hayakawa, Kazuhide Adachi, Mitsuhiro Hasegawa, Yuichi Hirose
    AJNR. American journal of neuroradiology, Jan 30, 2024  
    BACKGROUND AND PURPOSE: Tumor embolization through the meningohypophyseal trunk and inferolateral trunk is known to be effective in skull-based tumors; however, microcatheter cannulation into these arteries is difficult, and the number of cases that can be safely embolized is limited. In this study, we present a novel embolization procedure for meningohypophyseal trunk and inferolateral trunk using the distal balloon protection technique and detail its clinical efficacy and complication risks. We developed this procedure to allow safe embolization in patients who cannot be adequately cannulated with microcatheters into these arteries. MATERIALS AND METHODS: Patients who underwent meningohypophyseal trunk or inferolateral trunk embolization using the distal balloon protection technique for skull-based tumors at our institution between 2010 and 2023 were included. In this procedure, the ICA was temporarily occluded with a balloon at the ophthalmic artery bifurcation, the microcatheter was guided to the meningohypophyseal trunk or inferolateral trunk vicinity, and embolic particles were injected into the arteries. The balloon was deflated after the embolic particles, that had refluxed into the ICA, were aspirated. RESULTS: A total of 25 meningohypophyseal trunks and inferolateral trunks were embolized during 21 surgeries. Of these 25 arteries, only nine (36.0%) were successfully cannulated with microcatheters. Nevertheless, effective embolization was achieved in all cases. Permanent complications occurred in only one case (4.8%), in which the central retinal artery was occluded during inferolateral trunk embolization, resulting in a visual field defect. No permanent complications resulting from the embolic cerebral infarction were observed. Of 16 cases that underwent MRI within a week after embolization, however, 11 (68.8%) demonstrated embolic cerebral infarctions. CONCLUSIONS: In patients with skull-based tumors with meningohypophyseal trunk or inferolateal trunk feeders that cannot be catheterized directly, embolization using the distal balloon protection technique for tumor supply can be considered as a salvage technique. ABBREVIATIONS: MHT = meningohypophyseal trunk; ILT = inferolateral trunk; GC = guide catheter; AC = aspiration catheter; FR = flow reverse.
  • Kei Yamashiro, Saeko Higashiguchi, Motoharu Hayakawa, Yuichi Hirose
    Acta neurochirurgica, 166(1) 44-44, Jan 29, 2024  
    BACKGROUND: In intraventricular surgery using a flexible endoscope, the lesion is usually aspirated via the working channel. However, the surgical view during aspiration is extremely poor because the objective lens is located adjacent to the working channel. METHOD: To address this issue, we developed a novel surgical procedure using an angiographic catheter. In this procedure, the catheter is inserted into the working channel, and the lesion is aspirated through the catheter. Besides, continuous intraventricular irrigation is performed via the gap between the catheter and the working channel. CONCLUSION: This procedure maintains a clear view during surgery and reduces complications.
  • Kiyonori Kuwahara, Shigeta Moriya, Yushi Kawazoe, Mitsumasa Akiyama, Daijiro Kojima, Motoharu Hayakawa, Yuichi Hirose
    Japanese Journal of Stroke, 2024  
  • 森 雪恵, 森谷 茂太, 川副 雄史, 桑原 聖典, 秋山 光正, 早川 基治
    脳血管内治療, 8(Suppl.) S677-S677, Nov, 2023  
  • 加藤 賢人, 川副 雄史, 森谷 茂太, 桑原 聖典, 秋山 光正, 早川 基治
    脳血管内治療, 8(Suppl.) S737-S737, Nov, 2023  
More

Misc.

 287
  • 森谷 茂太, 定藤 章代, 早川 基治, 安達 一英, 大場 茂生, 長谷部 朗子, 鈴木 健也, 渡邉 定克, 高亀 弘隆, 前田 晋吾, 中原 一郎, 廣瀬 雄一
    JNET: Journal of Neuroendovascular Therapy, 9(6) S430-S430, Nov, 2015  
  • 村山 和宏, 早川 基治, 鱸 成隆, 植田 高弘, 片田 和広, 外山 宏
    日独医報, 60(2) 159-170, Nov, 2015  
  • 稲桝 丈司, 我那覇 司, 大枝 基樹, 森谷 茂太, 早川 基治, 加藤 庸子, 廣瀬 雄一
    日本救急医学会雑誌, 26(8) 293-293, Aug, 2015  
  • ハセガワ ミツヒロ
    42(5) 35-39, May, 2015  
  • 長谷川 光広, 早川 基治, 廣瀬 雄一
    新医療, 42(5) 35-39, May, 2015  
    レンチキュラ方式を用いた3Dディスプレイにより専用眼鏡なしで高品質3D画像を描出することが可能となり、医学教育をはじめ多方面の医療分野への応用が期待される。本システムの脳腫瘍手術教育への応用の概要と今後の展望を紹介する。(著者抄録)
  • 稲桝 丈司, 森谷 茂太, 大枝 基樹, 定藤 章代, 早川 基治, 伊藤 圭介, 我那覇 司, 石原 興平, 加藤 庸子, 廣瀬 雄一
    Neurosurgical Emergency, 19(3) 355-355, Jan, 2015  
  • 長谷川光広, 早川基治, 廣瀬雄一
    月刊新医療, 5 36-39, 2015  
  • 定藤 章代, 早川 基治, 安達 一英, 前田 晋吾, 加藤 庸子, 廣瀬 雄一
    JNET: Journal of Neuroendovascular Therapy, 8(6) 222-222, Dec, 2014  
  • 早川 基治, 前田 晋吾, 安達 一英, 定藤 章代, 森谷 茂太, 石原 興平, 村山 和宏, 片田 和広, 廣瀬 雄一
    JNET: Journal of Neuroendovascular Therapy, 8(6) 231-231, Dec, 2014  
  • 安達 一英, 定藤 章代, 早川 基治, 前田 晋吾, 石原 興平, 森谷 茂太, 廣瀬 雄一
    JNET: Journal of Neuroendovascular Therapy, 8(6) 299-299, Dec, 2014  
  • 石原 興平, 定藤 章代, 安達 一英, 前田 晋吾, 森谷 茂太, 早川 基治, 廣瀬 雄一
    JNET: Journal of Neuroendovascular Therapy, 8(6) 344-344, Dec, 2014  
  • 高尾 洋之, 早川 基治, 鈴木 貴士, 増田 俊輔, 石橋 敏寛, 山本 誠, 方田 和廣, 村山 雄一
    JNET: Journal of Neuroendovascular Therapy, 8(6) 353-353, Dec, 2014  
  • 森谷 茂太, 前田 晋吾, 安達 一英, 大枝 基樹, 石原 興平, 早川 基治, 定藤 章代, 廣瀬 雄一
    JNET: Journal of Neuroendovascular Therapy, 8(6) 402-402, Dec, 2014  
  • 前田 晋吾, 定藤 章代, 早川 基治, 安達 一英, 石原 興平, 森谷 茂太, 外山 宏, 廣瀬 雄一
    JNET: Journal of Neuroendovascular Therapy, 8(6) 405-405, Dec, 2014  
  • Joji Inamasu, Teppei Tanaka, Akiyo Sadato, Motoharu Hayakawa, Kazuhide Adachi, Takuro Hayashi, Yoko Kato, Yuichi Hirose
    Geriatrics & gerontology international, 14(4) 858-63, Oct, 2014  Peer-reviewed
    AIM: Therapeutic intervention to repair unruptured aneurysms (UA) has not been strongly recommended for the elderly, because of their limited life expectancy and low annual bleeding rate. However, physically and mentally healthy older adults with seemingly high risk of aneurysmal bleeding might benefit from having their UA repaired. METHODS: A single-center retrospective study was carried out. Among 1078 patients admitted for treatment of UA between 2007 and 2011, the number of patients aged ≥ 75 years who underwent surgical and endovascular repair of UA was 30 and 31, respectively. The operative and mid-term outcomes were compared between the two groups. For evaluation of the operative outcomes, frequency and types of adverse events that occurred within 30 days of intervention (operative morbidity) were described. For assessment of the mid-term outcomes, activities of daily living (ADL) at 24 months after intervention were evaluated with the modified Rankin Scale (mRS). RESULTS: The operative morbidity rate was 6.7% in the open surgery group and 6.5% in the endovascular surgery group, and they did not differ significantly. The frequency of patients with mRS 0-2 at 24 months after intervention was 85.7% in the open surgery group and 82.8% in the endovascular surgery group, and they did not differ significantly. The adverse event rate of patients with middle cerebral artery aneurysms treated endovascularly was high (80%). CONCLUSIONS: The outcomes of individuals aged ≥ 75 years who underwent repair of UA were generally favorable in either treatment group, with more than 80% living an independent life at 24 months after intervention.
  • Oshima Marie, Ishigami Yuta, Hayakawa Motoharu
    Japanese Journal of Neurosurgery, 23(9) 710-715, Sep, 2014  
    Hemodynamics plays an important role in the initiation, growth, and rupture of cerebral aneurysms. Due to limitations in the spatial and temporal resolutions of medical image data, it is difficult to obtain detailed hemodynamic information such as the velocity field or the wall shear stress. If an aneurysm is located in a bifurcation segment, the hemodynamics are affected by flow distributions and the compliance of the arterial wall. Thus, the effects of the entire circulatory system become essential, as well as the vascular dynamics.<br>  This paper presents the fundamentals of hemodynamics and the recent developments in patient-specific modeling and simulation for cerebral aneurysms. Particularly, this paper focuses on the multi-scale simulation of the interaction between the blood flow and arterial wall in order to consider the effects of the entire circulatory system and the wall dynamics.
  • 46(10) 72-77, Sep, 2014  
  • 稲桝 丈司, 大枝 基樹, 伊藤 圭介, 早川 基治, 加藤 庸子, 廣瀬 雄一
    日本救急医学会雑誌, 25(8) 471-471, Aug, 2014  
  • 村山 和宏, 片田 和広, 早川 基治, 外山 宏
    日本臨床, 72(増刊5 最新臨床脳卒中学(上)) 485-489, Jul, 2014  
  • M. Hayakawa, T. Tanaka, A. Sadato, K. Adachi, K. Ito, N. Hattori, T. Omi, M. Oheda, K. Katada, K. Murayama, Y. Kato, Y. Hirose
    CLINICAL NEURORADIOLOGY, 24(2) 145-150, Jun, 2014  Peer-reviewed
    Many epidemiological studies on unruptured cerebral aneurysms have reported that the larger the aneurysm, the higher the risk of rupture. However, many ruptured aneurysms are not large. Electrocardiography (ECG)-gated 3D-computed tomography angiography (4D-CTA) was used to detect pulsation in unruptured cerebral aneurysms. The differences in the clinical course of patients in whom pulsation was or was not detected were then evaluated. Forty-two patients with 62 unruptured cystiform cerebral aneurysms who underwent 4D-CTA and follow-up 3D-CTA more than 120 days later were studied. The tube voltage, tube current, and rotation speed were 120 kV, 270 mA, and 0.35 s/rot., respectively. ECG-gated reconstruction was performed, with the cardiac cycle divided into 20 phases. Patients with heart rates higher than 80 bpm were excluded, so 37 patients with 56 aneurysms were analyzed. Pulsation was detected in 20 of the 56 unruptured aneurysms. Of these 20 aneurysms, 6 showed a change in shape at the time of follow-up. Of the 36 aneurysms in which pulsation was not detected, 2 showed a change in shape at follow-up. There was no significant difference in the follow-up interval between the two groups. The aneurysms in which pulsation was detected were significantly more likely to show a change in shape (P = 0.04), with a higher odds ratio of 7.286. Unruptured aneurysms in which pulsation was detected by 4D-CTA were more likely to show a change in shape at follow-up, suggesting that 4D-CTA may be useful for identifying aneurysms with a higher risk of rupture.
  • 村山 和宏, 伴野 辰雄, 大家 祐実, 鱸 成隆, 片田 和広, 定藤 章代, 田中 鉄兵, 早川 基治
    Japanese Journal of Radiology, 32(Suppl.) 18-18, Feb, 2014  
  • 定藤 章代, 早川 基治, 田中 鉄兵, 安達 一英, 伊藤 圭介, 稲桝 丈司, 加藤 庸子, 廣瀬 雄一
    脳血管攣縮, 29 62-65, Feb, 2014  
    発症72時間以内に入院しclippingまたはcoilingによる再出血予防を行ったクモ膜下出血患者224例を対象に、脳血管攣縮および脳梗塞発症について検討した。WFNS gradeはIが25%、IIが45%、IIIが8%、IVが22%であった。症候性脳血管攣縮は27例、CTで新たな脳梗塞を認めたのは23例で、これら高度攣縮(HVS)の発生率は14.3%であった。HVS発生率はWFNS grade別にみるとIが3.6%、II+IIIが16.0%、IVが22.5%と増加し、術式ではクリッピング術14.0%、コイル塞栓術15.6%と有意差はなかった。症候性脳血管攣縮の退院時転帰は約半数がmRS 0〜2であり、血管内治療を行った群での分布に近く、血管内治療の効果を反映していると考えられた。保存的治療群は血管内治療を行うタイミングを逸した者が多く含まれており、転帰不良の傾向であった。攣縮に対する血管内治療後の症状は、消失27.8%、改善38.9%、不変33.3%であった。
  • 早川 基治, 鈴木 貴士, 高尾 洋之, 廣瀬 雄一
    脳神経外科速報, 24(1) 60-64, Jan, 2014  
    近年画質が向上し、脳動脈～脳動脈瘤の拍動を再現し得る心電同期再構成3D-CTA(4D-CTA)のデータを用いて、脳動脈瘤の弾性に考慮した解析を行った。得られたデータとそれぞれの時相での血流速度を挿入し、WSSやpressureを解析した。この擬似弾性モデルと通常の剛性モデルでのCFD解析結果を比較したところ、pressureにおいて、ブレブ部分で疑似拍動モデルと剛性モデルの間で若干の違いを認めた。さらなる検証が必要であるが、今後、4D-CTAデータがCFDによる脳動脈瘤解析に必要となる可能性がある。(著者抄録)
  • Mitsuhiro Hasegawa, Takuro Hayashi, Shinya Nagahisa, Kazuhide Adachi, Shigeta Moriya, Tsukasa Ganaha, Joji Inamasu, Motoharu Hayakawa, Yuichi Hirose
    Japanese Journal of Neurosurgery, 23(1) 29-36, 2014  
    The functional prognosis for deep-seated meningiomas is mostly dictated by the approach chosen and the dissection technique employed to remove tumor tissue from deep veins, cranial nerves and the brainstem. Accordingly, in this study among a consecutive 293 meningioma operations, the incidence, location, preservation rate of cranial nerve function, and the most appropriate approach selection for deep-seated meningiomas were retrospectively analyzed. The rate of vision improvement was 89% in 36 cases with visual dysfunction, the olfaction preservation was 93% in 30 cases operated via a basal interhemispheric approach, and hearing rate improvement was 44% in 9 cases with hearing disturbances. In order to determine the most appropriate approach to gain direct observation and secure dissection, detailed neuro-imagings including 320-row area detector CT, preoperative embolization of feeders from the internal carotid artery, and a thorough understandings of the biological behavior and pathology of the tumor-brain interface are important. Finally, after due delligence, it may become apparent that a multi-staged operation and/or Simpson Grade IV surgery might be a good alternative choice.
  • 村山 和宏, 鱸 成隆, 片岡 由美, 井田 義宏, 植田 高弘, 早川 基治, 藤井 健二, 片田 和広, 外山 宏
    臨床画像, 29(12) 1356-1371, Dec, 2013  
  • 定藤 章代, 早川 基治, 田中 鉄兵, 安達 一英, 石原 興平, 加藤 庸子, 廣瀬 雄一
    JNET: Journal of Neuroendovascular Therapy, 7(6) 190-190, Nov, 2013  
  • 田中 鉄兵, 定藤 章代, 早川 基治, 安達 一真, 石原 興平, 稲桝 丈司, 廣瀬 雄一
    JNET: Journal of Neuroendovascular Therapy, 7(6) 297-297, Nov, 2013  
  • 前田 晋吾, 早川 基治, 林 純一, 石原 興平, 大見 達夫, 定藤 章代, 伊藤 泰広, 西田 卓, 中井 紀嘉, 小倉 礼
    JNET: Journal of Neuroendovascular Therapy, 7(6) 328-328, Nov, 2013  
  • Joji Inamasu, Takafumi Kaito, Takeya Watabe, Tsukasa Ganaha, Yasuhiro Yamada, Teppei Tanaka, Shuei Imizu, Takuro Hayashi, Motoharu Hayakawa, Yoko Kato, Yuichi Hirose
    JOURNAL OF STROKE & CEREBROVASCULAR DISEASES, 22(8) 1350-1354, Nov, 2013  
    Background: Malignant hemispheric infarction is a life-threatening condition with a high mortality rate. Decompressive hemicraniectomy (DHC) is frequently a life-saving procedure that has shown the highest grade of evidence for patients 18 to 60 years of age. However, the efficacy of DHC in patients &gt;60 years of age has rarely been investigated. Methods: A retrospective study was conducted in a single academic institution. Surrogates of patients with clinical signs of impending brain herniation despite standard medical therapy were offered the option of DHC regardless of age or the side of the lesion. The clinical data from 18 patients &gt;60 years of age who underwent DHC for malignant hemispheric infarction in our institution were analyzed. Patients were classified into the following 2 groups: 61-70 and &gt;70 years of age, and their demographics and surgical outcomes were compared. The variables compared included the male: female ratio, side of the lesion, type of stroke, site of vascular occlusion, use of thrombolytic therapy, National Institutes of Health Stroke Scale score, stroke onset-to-DHC interval, duration of hospital stay, infectious complications, and 90-day mortality rate. Results: There were no significant intergroup differences in any of the demographic variables evaluated. However, the 30-day mortality rate was significantly higher in the group that was &gt;70 years of age (0% v 60%; P = .01) than in the group that was 61 to 70 years of age. Conclusions: We suggest that the efficacy of DHC in malignant hemispheric stroke patients between 61 and 70 years of age be further investigated in future randomized trials. By contrast, it appears unlikely that patients &gt;70 years of age would benefit from DHC.
  • 稲桝 丈司, 林 拓郎, 垣内 孝史, 大枝 基樹, 山田 康博, 伊藤 圭介, 田中 鉄兵, 井水 秀栄, 早川 基治, 定藤 章代, 加藤 庸子, 廣瀬 雄一
    日本神経救急学会雑誌, 26(1) 27-27, Jun, 2013  
  • 林 拓郎, 稲桝 丈司, 井水 秀栄, 我那覇 司, 山田 康博, 垣内 孝史, 早川 基治, 渡部 剛也, 加藤 庸子, 廣瀬 雄一
    日本脳神経外科救急学会プログラム・抄録集, 18回 73-73, Feb, 2013  
  • 村山 和宏, 片田 和広, 外山 宏, 早川 基治, 井水 秀栄, 松本 良太, 藤井 健二, 池田 佳弘, 相馬 努
    日本医学放射線学会学術集会抄録集, 72回 S305-S305, Feb, 2013  
  • 稲桝丈司, 田中鉄兵, 定藤章代, 早川基治, 渡部剛也, 服部夏樹, 大枝基樹, 安達一英, 井水秀栄, 西山悠也, 伊藤圭介, 林拓郎, 加藤庸子, 廣瀬雄一
    日本脳ドック学会総会プログラム・抄録集, 22nd, 2013  
  • Motoharu Hayakawa, Takeya Watabe, Jumpei Oda, Yuichi Hirose
    MICROSURGERY, 47-65, 2013  
  • 早川基治, 鈴木貴士, 高尾洋之, 廣瀬雄一
    2013  
  • SADATO Akiyo, HAYAKAWA Motoharu, TANAKA Teppei, WATABE Takeya, ADACHI Kazuhide, KATO Yoko, HIROSE Yuichi
    Surgery for Cerebral Stroke, 41(4) 247-252, 2013  
    Objective: We retrospectively analyzed thromboembolic complications for unruptured cerebral aneurysms treated with stent assisted coil embolization (SAC).<br> Patients and methods: Between 2010 September and 2012 March, 36 unruptured broad neck aneurysms in 35 patients were treated by SAC following dual antiplatelet medication with aspirin and clopidogrel. Aspirin and clopidogrel were started 1–14 days before the procedure. After the procedure, diffusion weighted MR imaging (DWI) was performed within seven days. DWI findings were graded into A to D depending on the number and the size of bright spots: A, no bright lesions; B, 1–5 small (＜10 mm) lesions; C, six or more small lesions; D, any large (≧10 mm) lesions.<br> Results: Angiography showed complete occlusion was achieved in 13 aneurysms (36%), neck remnant in nine (25%), and body filling in 14 (39%). Symptomatic thromboembolic complications occurred in six cases (17%). The symptoms were transient in four of the six patients, and two patients had persisting minor symptoms (modified Rankin Scale 1 and 2). The DWI grade of SAC cases was A in two patients, B in six, C in 16, and D in eight. Among SAC cases, there was a tendency of higher incidence of Grade D when clopidogrel was started earlier than three days before the procedure.<br> Conclusions: SAC is a feasible and effective technique for treating broad neck aneurysms. Starting clopidogrel three or more days before the procedure may half reduce thromboembolic complications. <br>
  • 津田 浩希, 朝倉 翔太, 元祐 昌廣, 高尾 洋之, 村山 雄一, 早川 基治, 池田 誠一, 阿部 俊昭
    JNET: Journal of Neuroendovascular Therapy, 6(5) 181-181, Nov, 2012  
  • 定藤 章代, 早川 基治, 田中 鉄兵, 安達 一英, 渡部 剛也, 服部 夏樹, 伊藤 圭介, 稲枡 丈司, 加藤 庸子, 廣瀬 雄一
    JNET: Journal of Neuroendovascular Therapy, 6(5) 214-214, Nov, 2012  
  • 定藤 章代, 早川 基治, 田中 鉄兵, 安達 一英, 渡部 剛也, 服部 夏樹, 伊藤 圭介, 加藤 庸子, 廣瀬 雄一
    JNET: Journal of Neuroendovascular Therapy, 6(5) 218-218, Nov, 2012  
  • 早川 基治, 田中 鉄兵, 定藤 章代, 安達 一英, 伊藤 圭介, 服部 夏樹, 渡部 剛也, 我那覇 司, 山田 康博, 村山 和宏, 片田 和廣, 廣瀬 雄一
    JNET: Journal of Neuroendovascular Therapy, 6(5) 223-223, Nov, 2012  
  • 田中 鉄兵, 定藤 章代, 早川 基治, 安達 一英, 渡部 剛也, 伊藤 圭介, 市川 亮子, 廣瀬 雄一
    JNET: Journal of Neuroendovascular Therapy, 6(5) 290-290, Nov, 2012  
  • 安達 一英, 早川 基治, 定藤 章代, 田中 鉄兵, 林 拓郎, 前田 晋吾, 西山 悠也, 長久 伸也, 長谷川 光広, 廣瀬 雄一
    JNET: Journal of Neuroendovascular Therapy, 6(5) 425-425, Nov, 2012  
  • 村山 和宏, 定藤 章代, 大家 祐実, 田中 鉄兵, 早川 基治, 小森 雅子, 植田 高弘, 外山 宏, 片田 和広
    日本医学放射線学会秋季臨床大会抄録集, 48th S505-S505, Aug, 2012  
  • 村山 和宏, 早川 基治, 井水 秀栄, 小森 雅子, 植田 高弘, 外山 宏, 安野 泰史, 片田 和広
    映像情報Medical, 44(8) 96-101, Jul, 2012  
  • 村山 和宏, 片田 和広, 外山 宏, 早川 基治
    日本医学放射線学会学術集会抄録集, 71回 S193-S193, Feb, 2012  
  • 村山 和宏, 片田 和広, 早川 基治, 大家 祐実
    Annual Review神経, 2012 59-67, Jan, 2012  
    2007年10月から臨床で稼働を開始した320列Area Detector CT(Aquilion ONE:東芝メディカルシステムズ)の最大の特徴は,造影剤をボーラス静注しながら1分程度の連続スキャンを行うことによって,脳神経領域の診断に必要な単純CT,全脳CT灌流画像,全脳Dynamic CTAを一度に得られることである.これまでの研究結果によりその有用性と課題が明らかにされつつあり,320列Area Detector CTは脳神経領域における診断ツールとして重要な役割を担っていると思われる.一方,広範囲の連続撮影によって被曝線量の増加が懸念されるが,現在ではIterative Re-construction(Adaptive Iterative Dose Re-duction 3D;東芝メディカルシステムズ)を用いた被曝線量低減への取り組みもなされている.本稿では,320列Area Detector CTを用いたCT灌流画像,Dynamic CTAの臨床応用について,最近の文献や実際の臨床画像を呈示しながら概説する.(著者抄録)
  • 長谷川光広, 早川基治, 村山和宏, 長久伸也, 林拓郎, 西山悠也, 安達一英, 吉田耕一郎, 廣瀬雄一, 片田和広
    日本脳腫瘍の外科学会プログラム・抄録集, 17th, 2012  
  • Kobayashi Masaharuo, Sato Yoichi, Hayakawa Motoharu, Oshima Mari
    The Proceedings of the JSME Conference on Frontiers in Bioengineering, 2012.23 89-90, 2012  
  • Teppei Tanaka, Akiyo Sadato, Motoharu Hayakawa, Masahiro Oomura, Shmgo Maeda, Kazuhide Adachi, Takeya Watabe, Hisaya Hiramatsu, Shuei Imizu, Makoto Negoro, Yuichi Hirose
    Journal of Neuroendovascular Therapy, 5(3) 202-207, 2012  
    Objective: We report a case of unruptured large aneurysm associated with persistent primitive trigeminal artery (PTA) treated by endovascular trapping after balloon test occlusion (BTO) with tandem balloons. Case presentation: A 37-year-old woman presented with diplopia and ptosis due to left oculomotor palsy. Cerebral angiography revealed a left PTA and unruptured large aneurysm at the junction of the PTA and the left internal carotid artery (ICA). The left carotid angiogram showed filling of the upper basilar artery via the PTA, and the left vertebral angiogram also showed filling of the basilar artery and entire posterior circulation. To evaluate the tolerance for the aneurysm trapping, we performed BTO with tandem balloons placed both proximal and distal to the aneurysm to isolate the left anterior circulation from both the ICA and PTA. As the mean stump pressure was below 60% of pre-BTO value, left superficial temporal artery-middle cerebral artery anastomosis was performed a week before endovascular trapping. Subsequently, the aneurysm, ICA, and PTA were successfully embolized with coils, leading to completion of trapping of the aneurysm, without causing any new neurological deficits. Conclusion: To evaluate the precise hemodynamics and collateral circulation, BTO using tandem balloons seems to be useful in cases of persistent PTA. © 2012, The Japanese Society for Neuroendovascular Therapy. All rights reserved.
  • 村山 和宏, 片田 和広, 早川 基治, 大家 祐実, 外山 宏, 安野 泰史, 谷口 彰
    日独医報, 56(2) 202-214, Dec, 2011  

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