Publications by authors named "Toru Otsuka"

Blood blister-like aneurysms (BBAs) are rare and challenging intracranial aneurysms. They pose significant diagnostic and surgical risks due to their delicate walls. Accounting for a small percentage of intracranial aneurysms, BBAs are pathologically pseudoaneurysms, often resulting from arterial dissection, with a high tendency to rupture.

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Several isoforms of serum amyloid A (SAA) have been identified so far and because the plasma concentration of it increases dramatically, it is used as an indicator of inflammation in animals. In many terrestrial mammals, the circulating isoforms are SAA1 and SAA2, which are synthesized in the liver. Extra-hepatically synthesized SAA3, however, is a predominantly local SAA isoform with a characteristic N-terminal TFLK motif and a highly alkaline isoelectric point (pI).

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The purpose of administering a saline solution flush after contrast medium injection is to more effectively utilize the contrast medium remaining in the vessels from the subclavian vein to the superior vena cava. In order to investigate the effects of administering a saline solution flush after a contrast medium injection, we evaluated the effects of various contrast medium injection durations and injection methods on the time-density curve (TDC) using a custom-made TDC measurement phantom. The TDC was found to have a biphasic appearance, showing a rapid increase after the arrival of contrast medium in the target region followed by a slower increase from an inflection point at 25 s after the start of contrast medium injection, reflecting the differences in circulatory dynamics for each duration.

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