ABSTRACT
The Ministry of Health and Welfare of Japan is planning a pooling system for multiple-choice questions (MCQs) for the national examination for medical practitioners. To clarify possible problems of such a system, a field study was performed by 10 medical schools in Japan using 90 MCQs from previous examinations. Nine hundred twenty-four 6th-year students participated in the field test. For each MCQ, the correct-response rates at the originating school and those obtained in the field test were significantly correlated. Thus, the correct-response rates to questions on the field test could be predicted from the rates at the originating schools. However, for each question the correct-response rate was significantly higher for students of the originating school than for students of other schools. In the national examination, care should be taken to prevent differences in scores on the basis of question sources.
ABSTRACT
Since 1983, we have experienced endovascular treatment of intracranial AVMs.2)3) Superselective catheterization of feeding artery, embolization or feeding artery occlusion of the cerebral AVMs have been performed for 73 cases in 134 sessions. Endovascular treatment of intracranial AVMs such as embolization or feeding artery occlusion have been performed for 57 cases of AVMs in 95 sessions. In each time, endovascular approach was performed for two to five feeding arteries, so more than 300 feeding arteries were catheterized by microcatheters or balloon catheters. In this report, we present our experiences of endovascular treatment of intracranial AVMs and discuss embolic materials and the role of endovascular treatment of intracranial. AVMs.