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Biomedical subjects

O Sato

Publications and source records attributed to O Sato.

At least 271 records · Page 15Linked to original sources
PubMed1978

Intracranial aneurysms in geriatric patients: angiographic features and angioautotomographic analyses.

The angiographic investigation of intracranial aneurysms in geriatric patients was made by conventional cerebral angiography and angioautomography. Analyses were based on 49 aneurysms in 38 patients aged over 60 who had 24 (49.0%) large aneurysms of maximum diameter over 100 mm. This contrasted strongly with the aneurysms of patients aged under 60, only 14.4% of which were large. Cerebral angioautotomography had a particular diagnostic value for such large aneurysms, revealing not only the stalks and the whole shapes of aneurysms, but also the normal parent arteries which were hidden on conventional cerebral angiography.

Age Factors↗
PubMed1978

A new method of magnification cerebral angioautotomography for the analysis of intracranial aneurysms.

The authors have developed a new method of magnification cerebral angioautotomography which is performed by the use of a special head-swing apparatus. From the results of experiences of 24 intracranial aneurysms in 15 patients, the method has proved useful for the intracranial aneurysms in detecting the shape and the stalk of aneurysms which were obscured or hidden on conventional magnification cerebral angiography.

Carotid Artery Diseases↗
PubMed1978

Angiotomography of intacranial aneurysms. Analysis by a new method of angioautotomography.

The authors have developed a new method of angioautotomography by the use of a special head-swing apparatus. They have studied 70 intracranial aneurysms by this method and have found that it was more useful in clearly detecting the stalk of aneurysms than conventional angiography. The authors conclude that the method is also superior to conventional magnification angiography. Magnification angiotomography performed by this method offers more precise details.

Basilar Artery↗
PubMed1976

[Contrast media enhancement in cranial computed tomography --studies of iodinated contrast infusion (ICI)].

The effect of infusion of iodinated contrast material on the enhancement of the computed tomography were studied in several kinds of the intracranial lesions. Especially, relationship between the degree of the enhancement and the time interval after the infusion was examined. It was found that the appearance of the enhancement effect were different according to the pathological types of the lesions. There were also time differences even in the same lesion before the full size of the lesions was demonstrated. The pathological type of the lesions could be suggested from the enhanced figures of the lesions, but the diagnosis would be more accurate in consideration of the localization of the lesions. It was thus concluded that this method was useful for the detection of the precise localization and the size of the lesions which were not so clearly demonstrated in conventional cranial computed tomography.

Brain Diseases↗
PubMed1976

[Supratentorial extradural hematomas following posterior fossa craniectomy (author's transl)].

Five cases of the supratentorial extradural hematomas secondary to the posterior fossa craniectomy were reported. The site of the hematoma was far from the operative field and two cases showed acute course and three were rather mild. The symptoms of this complication were the unsuspected sensorium disturbance, anisocoria and the non-functioning ventricular drainage. Two cases died of this complication and two were severely disabled. The mechanism of this complication is not clearly understood. The lowering of the ventricular pressure by the ventricular tap during the operation may play significant role in the formation of the extradural hematoma. The younger age of the cases and the long history of increased intracranial pressure were stressed in the literature. The significance of the management of the ventricular pressure during the operation was emphasized. The prevention is the best treatment.

Adult↗