Naoki Akagi

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We investigated regional cerebral blood flow (rCBF) using three-dimensional stereotactic surface projection (3D-SSP) analysis in 30 patients initially diagnosed as Parkinson's disease (PD), and compared differences in rCBF between patients with and without PD-related manifestations. 3D-SSP analysis of cerebral perfusion was performed by use of a control(More)
Although dementia is increasingly recognized as a common feature in Parkinson's disease (PD), its pathological substrate remains unknown. We conducted cross-sectional and longitudinal brain perfusion SPECT analyses to explore changes during the course of developing dementia in PD. Fifty-five patients originally diagnosed with PD were imaged in the(More)
Excess acquisition counts were often obtained by the current image acquisition of 30 minutes after 123I-ioflupane administration in a dopamine transporter study. The purpose of this study was to calculate the minimum acquisition time while retaining sufficient image quality, which could be adjusted for individual characteristics. Fifty patients who(More)
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