Hisako Imanaga

Learn More
A new syndrome of 'pure agraphia for Kanji' is described in 3 Japanese subjects with lesions in the left posteroinferior temporal region. Kanji (ideogram or morphogram) can be compared with orthographically irregular or ambiguous words in some European languages, since it is impossible to write Kanji characters unless each one of them is learned and(More)
Two cases of Rathke's cleft cysts were reported. Case 1. A 57-year-old man was admitted to our hospital on Sep. 29th. 1982, complaining of visual field defect. Visual acuity was 0.7 in the left eye and 0.1 in the right eye. Visual field examination revealed upper temporal quadrantanopsia on the left side and incomplete temporal hemianopia on the right side.(More)
Thirty-nine cases of intracranial meningiomas were analyzed to identify factors causing brain edema. Edema was significantly correlated with tumor size and the destruction of the leptomeninges and cortex. Meningotheliomatous meningioma tended to have more peritumoral edema. There was no correlation between the presence of edema and location of the tumor or(More)
Forty supratentorial meningiomas were analyzed to identify factors causing peritumoral brain edema. Parasagittal, sphenoid ridge, and olfactory groove meningiomas induced edema more frequently than those in other locations. Meningothelial meningiomas were more invasive than other types and were associated with more peritumoral edema. Brain edema correlated(More)
A case of glioblastoma multiforme of spinal cord followed by intracranial dissemination was reported. A 20-year-old man was admitted on Sep. 22, 1981, with motor disturbance of both legs and loss of urinary control. Neurological examination showed spastic paraplegia with bilateral Babinski signs. Abdominal and cremaster reflexes were absent. There was no(More)
The aim of this report is to assess the possibility of digital processing of computed tomography for histological diagnosis of brain tumors. For this purpose, percent histograms of x-ray attenuation value of lesions were analysed in 113 cases of histologically verified hemispheric tumors. Sixteen histograms obtained from normal brain parenchyma served as(More)
AIM Neurocognitive impairment is one of the core symptoms of bipolar disorder (BD). The MATRICS Cognitive Consensus Battery (MCCB) is a potential consensus assessment tool to evaluate cognitive function in patients with BD. Here, we report on cognitive deficits evaluated using the MCCB Japanese version (MCCB-J) in euthymic Japanese patients with BD, and(More)
Strategy in short-term memory for serially presented pictures shifts gradually from a non-phonological to a phonological method as memory ability increases during typical childhood development. However, little is known about the development of this strategic change in children with attention-deficit/hyperactivity disorder (ADHD). To understand the neural(More)
Gangliogliomas are rare central nervous system neoplasms. The clinical features, radiological findings and surgical results in 6 histologically proven cases of gangliogliomas in the cerebral hemisphere are reviewed. The ages varied between 8 and 58 years old at the time of diagnosis. Five patients had seizure disorders without focal neurological deficit or(More)
An 11-year-old boy was admitted to our clinic with complaint of headache. On admission he was in drowsy state and neurological examination revealed minimal motor weakness of the right hand. Plain skull roentgenogram demonstrated a thinning of the left temporal bone and elevation of the left sphenoidal wing. CT showed marked displacement of the midline(More)