{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,25]],"date-time":"2026-07-25T11:30:44Z","timestamp":1784979044286,"version":"3.55.0"},"reference-count":13,"publisher":"Journal of Neurosurgery Publishing Group (JNSPG)","issue":"1","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[1984,1]]},"abstract":"<jats:p content-type=\"fine-print\">\u2713 A transcranial ultrasonic method for the recording of murmurs from cerebral vessels is described. Using the new approach the authors have observed musical murmurs of pure tone quality in 15 patients with increased flow velocities in the cerebral arteries after spontaneous subarachnoid hemorrhage (SAH). The frequency range of the pure tones was from 140 to 820 Hz, corresponding to flow velocities between 73 and 215 cm\/sec. The musical murmurs occurred as a transitional state between silent flow and the well known phenomenon of bruit. They were observed between the 4th and the 20th day after SAH. The most likely cause of the musical murmur is a periodic shedding of vortices in the cerebral arteries, commonly referred to as \u201ca von K\u00e1rm\u00e1n vortex street.\u201d Clinically the presence of musical murmurs indicated that pathologically increased blood velocities were present in the artery under investigation. This probably reflected the degree of spasm.<\/jats:p>","DOI":"10.3171\/jns.1984.60.1.0032","type":"journal-article","created":{"date-parts":[[2009,5,8]],"date-time":"2009-05-08T16:19:39Z","timestamp":1241799579000},"page":"32-36","source":"Crossref","is-referenced-by-count":70,"title":["Musical murmurs in human cerebral arteries after subarachnoid hemorrhage"],"prefix":"10.3171","volume":"60","author":[{"given":"Rune","family":"Aaslid","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Helge","family":"Nornes","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1754","reference":[{"key":"b1","series-title":"J Neurosurg","doi-asserted-by":"publisher","first-page":"37","DOI":"10.3171\/jns.1984.60.1.0037","article-title":"Evaluation of cerebrovascular spasm with transcranial Doppler ultrasound.","volume":"60","author":"Aaslid","year":"1984"},{"key":"b2","series-title":"J Neurosurg","doi-asserted-by":"publisher","first-page":"769","DOI":"10.3171\/jns.1982.57.6.0769","article-title":"Noninvasive transcranial Doppler ultrasound recording of flow velocity in basal cerebral arteries.","volume":"57","author":"Aaslid","year":"1982"},{"key":"b3","series-title":"Am J Med","doi-asserted-by":"publisher","first-page":"360","DOI":"10.1016\/0002-9343(59)90002-6","article-title":"A general theory of the causes of murmurs in the cardiovascular system.","volume":"27","author":"Bruns","year":"1959"},{"key":"b4","series-title":"J Neurosurg","doi-asserted-by":"publisher","first-page":"485","DOI":"10.3171\/jns.1970.33.5.0485","article-title":"Turbulence in human intracranial saccular aneurysms.","volume":"33","author":"Ferguson","year":"1970"},{"key":"b5","series-title":"Circ Res","doi-asserted-by":"publisher","first-page":"583","DOI":"10.1161\/01.RES.26.5.583","article-title":"Arterial wall vibration distal to stenoses in isolated arteries of dog and man.","volume":"26","author":"Foreman","year":"1970"},{"key":"b6","series-title":"Cardiovascular Flow, Dynamics and Measurements.","first-page":"541","article-title":"Mechanics of pulsatile flow of relevance to the cardiovascular system","author":"Hussain","year":"1975"},{"key":"b7","series-title":"Stroke","doi-asserted-by":"publisher","first-page":"37","DOI":"10.1161\/01.STR.14.1.37","article-title":"Sonic detection of intracranial aneurysm and AVM.","volume":"14","author":"Kosugi","year":"1983"},{"key":"b8","series-title":"Bull Johns Hopkins Hosp","first-page":"136","article-title":"Musical murmurs.","volume":"97","author":"McKusick","year":"1955"},{"key":"b9","series-title":"Bull Johns Hopkins Hosp","first-page":"90","article-title":"Spectral phonocardiography: clinical studies.","volume":"95","author":"McKusick","year":"1954"},{"key":"b10","series-title":"Surg Neurol","first-page":"298","article-title":"Electronic stethoscope for detection of cerebral aneurysm, vasospasm and arterial disease.","volume":"8","author":"Olinger","year":"1977"},{"key":"b11","series-title":"Cardiovascular Fluid Dynamics","article-title":"Poststenotic dilatation in arteries","volume":"2","author":"Roach","year":"1972"},{"key":"b12","series-title":"Q J Exp Physiol","doi-asserted-by":"publisher","first-page":"181","DOI":"10.1113\/expphysiol.1975.sp002310","article-title":"Flow in glass models of arterial bifurcations and berry aneurysms at low Reynolds numbers.","volume":"60","author":"Stehbens","year":"1975"},{"key":"b13","series-title":"J Fluid Mech","doi-asserted-by":"publisher","first-page":"547","DOI":"10.1017\/S0022112059000829","article-title":"Experiments on the flow past a circular cylinder at low Reynolds numbers.","volume":"6","author":"Tritton","year":"1959"}],"container-title":["Journal of Neurosurgery"],"original-title":[],"link":[{"URL":"https:\/\/thejns.org\/view\/journals\/j-neurosurg\/60\/1\/article-p32.xml","content-type":"text\/html","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/thejns.org\/downloadpdf\/journals\/j-neurosurg\/60\/1\/article-p32.xml","content-type":"text\/html","content-version":"vor","intended-application":"syndication"},{"URL":"https:\/\/thejns.org\/downloadpdf\/journals\/j-neurosurg\/60\/1\/article-p32.xml","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2022,7,24]],"date-time":"2022-07-24T19:58:21Z","timestamp":1658692701000},"score":1,"resource":{"primary":{"URL":"https:\/\/thejns.org\/view\/journals\/j-neurosurg\/60\/1\/article-p32.xml"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[1984,1]]},"references-count":13,"journal-issue":{"issue":"1"},"URL":"https:\/\/doi.org\/10.3171\/jns.1984.60.1.0032","relation":{},"ISSN":["0022-3085"],"issn-type":[{"value":"0022-3085","type":"print"}],"subject":[],"published":{"date-parts":[[1984,1]]}}}