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K Sadamoto

Publications and source records attributed to K Sadamoto.

65 records · Page 4Linked to original sources
PubMedDate not supplied

Computed angiotomography of the brain: normal and normal variations of cerebral vessels.

Computed angiotomography with intravenous minimum dose bolus injection of contrast medium permits identification of the circle of Willis and the basal cerebral veins. The normal and normal variations of these vessels in the various clinical cases are presented and described in relation to other neighbouring structures. A detailed knowledge of computed angiotomographic images of normal cerebral vessels can serve as a clinical basis for evaluating the cerebrovascular lesions.

Cerebral Angiography↗
PubMedDate not supplied

Fast overlapping scans in cerebral computed angiotomography.

Three to four overlapping cerebral CT scans were obtained after the injection of a single bolus of contrast medium. The rapid sequential dynamic scanning was carried out with table increments, while there was peak iodine density in the carotid artery. The demonstration of cerebral vessel lesions (aneurysms, moyamoya disease, arteriovenous malformations, arterial narrowing, etc.) is easier and safer with this method as compared with the conventional multiple injection technique.

Adult↗
PubMedDate not supplied

Computed angiotomography of unruptured cerebral aneurysms.

Twenty-seven unruptured cerebral aneurysms in 25 patients were detected by computed angiotomography. A comparison of the computed angiotomographic features in common aneurysm sites with plain CT and conventional arteriography was carried out. An isodense, round cisternal defect and a calcification or high-density mass in the basal cisterns on plain CT are important findings suggestive of unruptured aneurysms larger than 7 mm in diameter. The identification of the aneurysm, as well as of the afferent and efferent arteries on computed angiotomography is essential for the direct diagnosis of smaller unruptured aneurysms related to the circle of Willis. This is possible in a number of cases when the aneurysms are relatively large. It appears that the aneurysm size must be larger than 3 mm in diameter to permit its recognition on the basis of angiotomography and the avoidance of false-positive findings.

Adult↗
PubMedDate not supplied

Usefulness of multiangle MRI in aortic arch dissection.

A multiangle scan technique was used in combination with usual spin echo and cine MR techniques to study a patient with aortic arch dissection. The intimal flap was seen with each technique and the jet into the entry site was observed with cine MR technique. Exact short axis images of aortic arch were obtained only with multiangle scan. Retrograde dissection and involvement of left subclavian artery were detected clearly on the short axis images.

Adult↗