Hiroya Akiba

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PURPOSE To assess magnetic resonance imaging as a diagnostic tool of neurovascular compression in a patient with abducens nerve palsy. METHODS We performed magnetic resonance imaging of the brainstem of a 46-year-old patient with left abducens nerve palsy using spoiled gradient recalled acquisition in the steady state (SPGR), which allows high-resolution(More)
PURPOSE To describe the thin-slice magnetic resonance imaging features of vascular compressive oculomotor nerve paresis. METHODS We performed thin-slice (2 mm thick) magnetic resonance imaging of the brainstem in a 74-year-old woman with right partial oculomotor nerve paresis using spoiled gradient recalled acquisition in the steady state. RESULTS(More)
BACKGROUND AND PURPOSE Flow voids within the cavernous sinuses and/or certain venous drainage on spin-echo MR imaging and time-of-flight (TOF) flow enhancement on MR angiography (MRA) have indicated high-velocity shunt flow and have been used for screening patients with dural arteriovenous fistulas (DAVFs) of the cavernous sinuses. In this investigation,(More)
This paper considers if huge accumulation of foreign reserves by some countries is optimal in a simple, intertemporal, and welfare maximization model with loss aversion. The optimality condition is shown to depend on several underlying parameters of the model. Configuration of output shocks and probability of bad state reveal that, controlling other(More)
We examine empirical consistency of the fundamentals in (1) the Middle and South American and (2) the Asian currency crises with the first-generation model, using panel data. We also evaluate our model by forecasting, and examine the differences between the two currency crises in terms of fundamentals. Some differences in explanatory power between(More)
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