经颅双工超声测量对血管状况的识别:病理中的人工脑血流

Q4 Multidisciplinary Proceedings of the Latvian Academy of Sciences. Section B. Natural, Exact, and Applied Sciences. Pub Date : 2022-06-01 DOI:10.2478/prolas-2022-0052

Roberts Leibuss, Olga Posredņikova, I. Pupkeviča, K. Meidrops, Dāvis Mackēvičs, Y. Dekhtyar, P. Stradins, E. Strīķe

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引用次数: 1

摘要

摘要本研究旨在探讨体外循环条件下脑血管痉挛、血管舒张及出血对经颅超声测量的影响。介绍了经颅双超声检查和幻影的发展。测量使用市售超声系统和体外循环机，水模和含玉米淀粉的32%甘油溶液。实验表明，人工循环中脑血管状况影响经颅双工超声测量极限值。血管状况变化最敏感的参数是峰值收缩速度(PSV)，其变化在100%的病例中观察到。最不敏感的是时间平均峰值速度(TAPV)和最小舒张速度(MDV)，在83%的病例中观察到变化。

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Transcranial Duplex Ultrasonography Measurements Towards Identification of Blood Vessel Conditions: Artificial Cerebral Blood Flow in Pathologies

Abstract The aim of the study was to investigate how cerebral vasospasm, vasodilation and haemorrhage under artificial circulation conditions during cardiopulmonary bypass affect transcranial duplex ultrasonography measurements. A description of transcranial duplex ultrasonography and phantom development is provided. Measurements were made using a commercially available ultrasound system and cardiopulmonary bypass machine, water phantom and 32% glycerol solution with cornstarch. The experiments showed that the cerebral blood vessel condition in artificial circulation affects transcranial duplex ultrasonography measurement limit values. The most sensitive parameter for blood vessel condition changes is Peak Systolic Velocity (PSV) for which changes were observed in 100% of cases. The most insensitive was Time-Averaged Peak-Velocity (TAPV), and Minimum Diastolic Velocity (MDV) for which changes were observed in 83% of cases.

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