頭蓋内占拠性病変における経頭蓋超音波断層法画像診断の有用性とその限界

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  • Usefulness of Transcranial Ultrasound Imaging for Intracranial Space Occupied Lesion

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We tried to evaluate the usefulness of the transcranial color flow imaging (TCFI) as a noninvasive imaging method for Intracranial space occupied lesion (I-SOL) .<BR>METHOD-TCFI (ATL, ULTRAMARK 9® 2.25 MHz phazed arrey, 90° sector scan) was applied from the.. bitemporal “acoustic window” to 22 meningiomas, 12 pituitary adenomas, 5 gliomas, I intraventricular tumor, 4 arteriovenous malformations (AVM), 7 intracerebral hematomas (ICH), 8 chronic subdural hematomas (CSH), 2 acute epidural hematomas (AEH), and 1 pediatric arachnoid cyst. RESULT-We were able to detect 12 meningiomas, 7 adenomas, 1 cystic glioma, 1 ventricular tumor, 2 AVMs, 6 ICHs, 6 CSHs, 2 AEHs, and 1 arachnoid cyst, as clearly defined lesions on B-mode images.<BR>It was difficult to visualize the region of the posterior fossa. Frontal and high convexity regions were also difficult to investigate. CONCLUSION-TCFI has great advantages : movability, noninvasiveness and blood flow detection factors. It provides an useful diagnostic method for the I-SOL.

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