01 January 1998
Non-invasive detection of intracranial vascular pathologies
Wojciech Muliński, Witold Wierzejewski, Tomasz GierczakMed Sci Monit 1998; 4(1): MT176-181 :: ID: 502857
Abstract
Cerebral vessel deformations generate acoustical bruits due to the disturbance in laminar blood flow. Signals of a characteristic spectral shape are produced by aneurysm, arteriovenous malformation and stenotic narrowing.These acoustical signals are strongly attenuated during propagation through the cranium and become very weak and noisy when outside the skull. A newly designed, highly sensitive accelerometric microphone, a low noise amplifier and a filter unit allow for the detection of very weak (low acoustical level) periodical signals in the 200Hz to 1000Hz span. Signals generated from pathological vessels have peaks in the spectrum at an acoustical level below OdB SPL (Sound Pressure Level). There are also acoustical bruits at much lower levels, which probably owe physiologically originated. Signal control and processing, implemented in the microcomputer software, performs a screening and non-invasive method for early detection of cerebral vessel deformations.
Keywords: Aneurysm, cerebral vessels deformations
Editorial
01 April 2024 : Editorial
Editorial: Forty Years of Waiting for Prevention and Cure of HIV Infection – Ongoing Challenges and Hopes for Vaccine Development and Overcoming Antiretroviral Drug ResistanceDOI: 10.12659/MSM.944600
Med Sci Monit 2024; 30:e944600
In Press
06 Mar 2024 : Clinical Research
Comparison of Outcomes between Single-Level and Double-Level Corpectomy in Thoracolumbar Reconstruction: A ...Med Sci Monit In Press; DOI: 10.12659/MSM.943797
21 Mar 2024 : Meta-Analysis
Economic Evaluation of COVID-19 Screening Tests and Surveillance Strategies in Low-Income, Middle-Income, a...Med Sci Monit In Press; DOI: 10.12659/MSM.943863
10 Apr 2024 : Clinical Research
Predicting Acute Cardiovascular Complications in COVID-19: Insights from a Specialized Cardiac Referral Dep...Med Sci Monit In Press; DOI: 10.12659/MSM.942612
06 Mar 2024 : Clinical Research
Enhanced Surgical Outcomes of Popliteal Cyst Excision: A Retrospective Study Comparing Arthroscopic Debride...Med Sci Monit In Press; DOI: 10.12659/MSM.941102
Most Viewed Current Articles
17 Jan 2024 : Review article
Vaccination Guidelines for Pregnant Women: Addressing COVID-19 and the Omicron VariantDOI :10.12659/MSM.942799
Med Sci Monit 2024; 30:e942799
14 Dec 2022 : Clinical Research
Prevalence and Variability of Allergen-Specific Immunoglobulin E in Patients with Elevated Tryptase LevelsDOI :10.12659/MSM.937990
Med Sci Monit 2022; 28:e937990
16 May 2023 : Clinical Research
Electrophysiological Testing for an Auditory Processing Disorder and Reading Performance in 54 School Stude...DOI :10.12659/MSM.940387
Med Sci Monit 2023; 29:e940387
01 Jan 2022 : Editorial
Editorial: Current Status of Oral Antiviral Drug Treatments for SARS-CoV-2 Infection in Non-Hospitalized Pa...DOI :10.12659/MSM.935952
Med Sci Monit 2022; 28:e935952