New Screening System for Unruptured Cerebral Aneurysms : Combination of an Expert System and DSA Examination
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概要
- 論文の詳細を見る
We have designed a screening system to diagnose unruptured aneurysms, including the use of digital subtraction angiography (DSA). We surveyed 115 patients who had undergone clipping procedures after subarachnoid hemorrhage (SAH) and questioned them with regard to the subjective symptoms. Sixty-eight of 92 patients who returned the questionnaire reported, prior to rupture, headache, eye pain, and neck pain most frequently, and also impairment of extraocular movements, ptosis, visual field defects, and motor and sensory disturbances. Nineteen (47.5%) of 40 patients who had complete pain relief after surgery complained of headache from 1 week to 1 month before SAH. In addition, nine patients (22.5%) complained of headache for several years, and were also pain-free after surgery. For the indication of DSA, we employed an expert system based on fuzzy set theory. Seven groups of parameters are: Group 1, a basic questionnaire concerning age, sex, and past and family histories; Group 2, 15 warning signs selected on the basis of retrospective study; and Groups 3-7, detailed questions concerning each sign. Scoring weights assigned to each condition based on the results of the retrospective study, and threshold values were determined by several neurosurgeons. The certainty factors for intermediate hypotheses were calculated from these weights and threshold values and summed up, from which the conclusion was obtained. Twelve new cases of unruptured cerebral aneurysm were diagnosed using this screening system. This system may improve the ability to diagnose cerebral aneurysms before rupture.
- 日本脳神経外科学会の論文
- 1990-08-15
著者
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笠井 敬一郎
東邦大学第二脳神経外科
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YANAI Hiroyuki
Department of Pathology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutica
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Yanai Hiroyuki
Iwatsuki Neurosurgical Clinics
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Yanai Hiroyuki
Department Of Materials Technology Faculty Of Engineering Chiba University
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YOSHII Nobuo
Department of Surgery, Keio University
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Samejima Hirotsugu
2nd Department Of Neurosurgery Toho University
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Yoshii Nobuo
Department Of Neurosurgery Keio University
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Yoshii Nobuo
Department Of Neurosurgery Ohashi Hospital Toho University School Of Medicine
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Samejima Hirotsugu
Departmert of Neurosurhery,School of Meicine,Toho University
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IWABUCHI Satoshi
The Departments of Neurosurgery, Toho University Ohashi Medical Center
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YOKOUCHI Tetsuya
The Departments of Neurosurgery, Toho University Ohashi Medical Center
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USHIKUBO Yukio
2nd Department of Neurosurgery, Toho University
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AOKI Kazuya
The Second Department of Neurosurgery, School of Medicine, Toho University
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Aoki Kazuya
The Second Department Of Neurosurgery School Of Medicine Toho University
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Aoki Kazuya
Department Of Neurosurgery Sakura Hospital Toho University School Of Medicine
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Ushikubo Yukio
2nd Department Of Neurosurgery Toho University
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Tsuzuki Takashi
The Second Department Of Neurosurgery School Of Medicine Toho University
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Tsuzuki Takashi
2nd Department Of Neurosurgery Toho University School Of Medicine
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Tsuzuki Takashi
Department Of Neurosurgery Kansai Rosai Hospital
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Samejima Hirotsugu
Departmert Of Neurosurhery School Of Meicine Toho University
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USHIKUBO Yukio
Department of Neurosurgery, Ohashi Hospital Toho University School of Medicine
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MIZOKAMI Toru
Department of Neurosurgery, Ohashi Hospital Toho University School of Medicine
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IWABUCHI Satoshi
Department of Neurosurgery, Ohashi Hospital Toho University School of Medicine
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KASAI Keiichiro
Department of Neurosurgery, Ohashi Hospital Toho University School of Medicine
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YAMAZAKI Yasuyuki
Department of Neurosurgery, Ohashi Hospital Toho University School of Medicine
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YOKOUCHI Tetsuya
Department of Neurosurgery, Ohashi Hospital Toho University School of Medicine
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Mizokami Toru
Department Of Neurosurgery Ohashi Hospital Toho University School Of Medicine
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Samejima Hirotsugu
2nd Department Of Neurosurgery Toho University School Of Medicine
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Iwabuchi Satoshi
The Departments Of Neurosurgery Toho University Ohashi Medical Center
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Yamazaki Yasuyuki
The Second Department Of Neurosurgery School Of Medicine Toho University
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Yokouchi Tetsuya
The Departments Of Neurosurgery Toho University Ohashi Medical Center
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Aoki Kazuya
Department of Chemical Engineering, Tokyo University of Agriculture and Technology
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