Pneumoangiogram in a patient with severe head injury. Case illustration.
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Biomedical subjects
Publications and source records attributed to C Obinata.
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An attachment device to fix a Sedan side-biting biopsy cannula to a stereotactic frame is described. The disadvantages of the biopsy cup forceps are resolved, and a relatively large amount of multiple specimens can be obtained along a single biopsy trajectory. This attachment device enables the side-biting cannula to follow a straight trajectory biopsy in various stereotactic frames.
We reported the correlation between the angiographical findings and parameters of the functional images of dynamic CT (FID-CT) in ten patients with cerebral ischemic disease. Six of these ten patients with an abnormal area on corrected mean transit time (CM) and time to peak (TP) had complete occlusion of intracerebral main arteries with poor collateral cerebral blood flow or no collateral flow on the angiography. Four patients with prolonged time only in the TP area, but not in the CM area, had stenosis or occlusion of the main trunk with satisfactory anterograde cerebral blood flow on the angiography. FID-CT is easy to apply for clinical use and said to be useful to predict arterial trunk occlusion or infarction volume. It might also be helpful to get further information about the intracerebral circulation disorders in the acute stage of cerebral ischemic disease.
Three newly designed bayonet clips (crankshaft clips) are presented. They were designed to occlude aneurysms with irregular necks by using the angle and shank portion of a bayonet clip (shank clipping). The new clips have shorter distal blades and longer shanks (proximal blades), and the angle portions are bent to an angle of smaller degree. These clips are useful particularly for aneurysms located in a wider space.
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