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Biomedical subjects

Y Maki

Publications and source records attributed to Y Maki.

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

[Falx images on CT scan (author's transl)].

It has been reported that falx images usually are not visualized on CT scan except in the case with brain atrophy of falx calcification. But we have often experienced the falx images on CT scan in the case of normal child, and we have an idea that falx images do not always mean a calcification of the falx. Evaluation of falx images on CT scan was done in 964 normal or abnormal cases in relation to different CT slice level, age, sex, pineal body and habenula and choroid plexus. Results are as follows; 1) Slice of higher level revealed higher incidence of falx image. 2) Incidence of falx images was lowest in the second decade, and showed gradual increase in relation to aging process. 3) Incidence of falx images revealed no sex difference. 4) Incidence of falx images showed a following tendency: a) Under 10 years; falx greater than pineal body and habenula greater than choroid plexus. b) Between 11 years to 20: pineal body and habenula greater than choroid plexus greater than or equal to falx. c) Over 21 years: pineal body and habenula greater than choroid plesus greater than falx. 5) The case with brain edema showed a higher incidence of falx images than the normal case, but the case with brain atrophy did not show a higher incidence. 6) Difference of CT number of falx region between the case of positive falx image and negative could not be recognized.

Adolescent↗
PubMed1977

Traumatic middle meningeal arteriovenous fistula. Report of 3 cases and analysis of 32 cases.

Three cases of traumatic middle meningeal arteriovenous fistula are reported and 32 cases, including ours, reported in the literature are analyzed. In these 32 cases, the appearance of the arteriovenous fistula at angiography exhibited one of three different configurations: type 1, the middle meningeal vein shows a railway configuration; type 2, the middle meningeal vein shows a rod configuration; type 3, extravasation of contrast material and/or pseudoaneurysm are concomitant. In correlating the angiographic type and clinical course, the following tendencies were observed: the clinical course was good in type 1, fair in type 2 and poor in type 3, respectively.

Adult↗
PubMed1976

Clinical and radioisotopic follow-up study of 'Moyamoya'.

24 children with 'moyamoya' had average follow-up periods of 5 years and 9 months. The following factors were noted to influence the prognosis for mental function: early onset, repeated transient ischemic attacks followed by residual neurological deficit, symptoms suggesting bilateral or dominant hemispheric lesions, and angiographically widespread occlusion. Futhermore, radioisotopic procedures could replace angiography for follow-up studies of patients with Moyamoya.

Adolescent↗
PubMed1976

Angiographic findings in intraventricular hemorrhage in newborn infants.

The present investigation indicates that early filling of deep veins is common in newborn infants on angiography. The characteristic findings of the intraventricular hemorrhage in newborn infants are (1) hydrocephalus and (2) prolonged stasis of contrast medium in choroid plexus in the lateral ventricles.

Cerebral Angiography↗
PubMed1976

[Traumatic thrombosis of the internal carotid artery: Report of three cases due to head injury with basal skull fracture (author's transl)].

Three cases of traumatic thrombosis of the internal carotid artery due to head injury with basal skull fracture were reported. The mechanism of thrombosis, the symptomatologic characteristics and the prognosis were discussed with reference to the data in the literature. Four mechanisms by which the condition may be produced include; injury to the intrapetrous or cevernous portion of the carotid artery during basal skull fracture, injury to the point of emergence of the carotid artery from the cavernous sinus as a result of shearing strains suffered at the time of injury, a direct blow to the neck or trauma to the paratonsillar area by a foreign object carried in the mouth, and stretching of the carotid artery by heperextension and lateral flexion of the neck. Secondary symptoms due to thrombosis of the carotid artery after an interval develop most commonly from twelve to twenty four hours. The prognosis in these patients is mostly poor. Therefore, angiography should be performed immediately on any patient suspected of having this lesion and treatment should be considered.

Accidents, Traffic↗
PubMed1976

[Cerebellar hemangioblastoma with multiple aneurysms].

We have reported a case of cerebellar hemangioblastoma in a 50 year-old Japanese female in which bilateral kidney and ovarian cysts, adrenal adnomatus hyperplasia, and erythrocytosis were observed. Futhermore, an aneurysm not initially observed was detected by cerebral angiography done 23 months after tumor extirpation. We have evaluated the relationship between cerebellar hemangioblastoma and concurrent multiple aneurysms with reference to reported cases.

Cerebellar Diseases↗
PubMed1976

[Some characteristic features of RI-cisternography in infancy and childhood (author's transl)].

There are few reports which discussed normal RI-cisternography in infancy and childhood. The cisternograms of the children between 2 months and 13 year-old were classified under a criteria into three groups; 17 normal cases, 135 borderline cases and 77 abnormal cases. The former two groups were compared with each other and characteristic findings of RI-cisternography in infants and children were appreciated clinically. And we attempted to establish normal RI-cisternography. The characteristic findings are: 1) When the images of cisterna magna is dilated, it can not be concluded directly that the abnormality of posterior fossa are suspected. 2) The bulk flow of CSF in infancy and childhood flows faster in intracranial subarachnoid space as well as intraspinal than the flow of adults. 3) Early ventricular reflux seems to be not valuable clinically. But we would like to emphasize that the incidence of these findings are variable as children grow older. The mechanism of this phenomenon needs further investigation.

Adolescent↗