Sclabassi R J, Sun M, Sekhar L, Wasserman J F, Blue H B
Department of Neurological Surgery, University of Pittsburgh, PA 15260.
Med Instrum. 1987 Dec;21(6):317-22.
Intracranial aneurysms have a high prevalence in the adult population; and if they rupture, significant morbidity almost always ensues. However, pulsatile blood flow through aneurysms produces vibrational sound patterns that may be detected extracranially. Thus, an acoustic aneurysm-detector has been developed to detect the sounds produced by intracranial aneurysms prior to rupture. The design is based on the utilization of a hydrophone for signal detection and computational signal processing for signal extraction. Data are examined in the time domain, the frequency domain, and the time-frequency plane. Examples are presented from an animal model and from a patient with a known aneurysm.
颅内动脉瘤在成年人群中具有较高的发病率；如果动脉瘤破裂，几乎总会导致严重的发病情况。然而，通过动脉瘤的脉动血流会产生可在颅外检测到的振动声音模式。因此，已开发出一种声学动脉瘤探测器，用于在颅内动脉瘤破裂前检测其产生的声音。该设计基于利用水听器进行信号检测以及利用计算信号处理进行信号提取。数据在时域、频域和时频平面中进行检查。文中给出了来自动物模型和一名已知患有动脉瘤患者的示例。
