A new algorithm for off-line automated emboli detection based on the pseudo-wigner power distribution and the dual gate TCD technique

Ultrasound in Medicine and Biology

Volumn 26, Issue 3, 2000, Pages 413-418

  Mess, Werner H ^a   Titulaer, Bart M ^a   Ackerstaff, Rob G A ^a  

^a NONE

Author keywords

Embolism; FFT; Pseudo Wigner function; Transcranial Doppler

Indexed keywords

ALGORITHMS; DOPPLER EFFECT; FAST FOURIER TRANSFORMS; MEDICAL IMAGING; SIGNAL TO NOISE RATIO; ULTRASONIC VELOCITY MEASUREMENT;

PSEUDO-WIGNER POWER DISTRIBUTION; TRANSCRANIAL DOPPLER SONOGRAPHY;

ULTRASONIC IMAGING;

ALGORITHM; ARTICLE; ARTIFACT; CAROTID ENDARTERECTOMY; CLINICAL ARTICLE; CLINICAL TRIAL; COMPUTER ASSISTED DIAGNOSIS; DIAGNOSTIC ACCURACY; DOPPLER ECHOGRAPHY; HEART SURGERY; HUMAN; MICROEMBOLISM; MONITORING; PRIORITY JOURNAL; RELIABILITY; TECHNIQUE;

ALGORITHMS; ARTIFACTS; CARDIAC SURGICAL PROCEDURES; ELECTROCOAGULATION; ENDARTERECTOMY, CAROTID; FOURIER ANALYSIS; HUMANS; INTRACRANIAL EMBOLISM; MONITORING, INTRAOPERATIVE; SIGNAL PROCESSING, COMPUTER-ASSISTED; ULTRASONOGRAPHY, DOPPLER, TRANSCRANIAL;

EID: 0034035226     PISSN: 03015629     EISSN: None     Source Type: Journal    
DOI: 10.1016/S0301-5629(99)00168-4     Document Type: Article

References (17)

1. Brucher R., Russell D. Differentiation between gaseous and solid microemboli using multifrequency Doppler. (Abstr.) Eur J Ultrasound. 5:1997;S40.
2. Droste D.W., Hagedorn G., Nötzold A., Siemens H.J., Sievers H.H., Kaps M. Bigated transcranial Doppler for the detection of clinically silent circulating emboli in normal persons and patients with prosthetic heart valves. Stroke. 28:1997;588-592.
3. Evans DH, McDicken WN. Doppler ultrasound; physics, instrumentation and signal processing, 2nd edition. Chichester, UK: Wiley and Sons, 2000.
4. Fan L., Evans D.H. Extracting instantaneous mean frequency information from Doppler signals using the Wigner distribution function. Ultrasound Med Biol. 20:1994;429-443.
5. Fan L., Evans D.H. A real-time and fine resolution analyser used to estimate the instantaneous energy distribution of Doppler signals. Ultrasound Med Biol. 20:1994;445-454.
6. Georgiadis D., Goeke J., Hill M., König M., Nabovi D.G., Stögbauer F., Zunker P., Ringelstein E.B. A novel technique for identification and Doppler microembolic signals based on the coincidence method; in vitro and in vivo evaluation. Stroke. 27:1996;683-686.
7. Georgiadis D., Wenzel A., Zerkowski H.R., Zierz S., Lindner A. Automated intraoperative detection of Doppler microembolic signals using the bigate approach. Stroke. 29:1998;137-139.
8. Keunen R.W.M., Stam C.J., Tavy D.L.J., Mess W.H., Titulaer B.M., Ackerstaff R.G.A. Preliminary report of detecting microembolic signals in transcranial Doppler time series with nonlinear forecasting. Stroke. 29:1998;1638-1643.
9. Mess W.H., Titulaer B.M., Ackerstaff R.G.A. Discrimination and characterization of emboli old and new aspects . Klingelhöfer J., Bartels E., Ringelstein E.B. New trends in cerebral hemodynamics and neurosonology. 1997;355-363 Elsevier, Amsterdam.
10. Mess WH, Titulaer BM, Ackerstaff RGA. Middle cerebral artery anatomy and characteristics of embolic signals - a dual gate computer simulation study. Ultrasound Med Biol 1999;25:531-539.
11. Moehring M.A., Spencer M.P., Radford R.L., McDaniel M.D., Mattson G.A. Low frequency annular transducers for detecting and characterizing microemboli in cardiopulmonary bypass (CPB) flow circuits with the embolus to blood power ratio (EBR). (Abstr.) Eur J Ultrasound. 5:1997;S41.
12. Molloy J., Markus H.S. Multigated Doppler ultrasound in the detection of emboli in a flow model and embolic signals in patients. Stroke. 27:1996;1548-1552.
13. Roy E., Abraham P., Montrésor S., Baudry M., Saumet J.L. The narrow band hypothesis an interesting approach for high-intensity transient signals (HITS) detection . Ultrasound Med Biol. 24:1998;375-382.
14. Smith J.L., Evans D.H., Fan L., Bell P.R.F., Naylor A.R. Differentiation between emboli and artefacts using dual-gated transcranial Doppler ultrasound. Ultrasound Med Biol. 22:1997;1031-1036.
15. Smith J.L., Evans D.H., Fan L., Thrush A.J., Naylor A.R. Processing Doppler ultrasound signals from blood-borne emboli. Ultrasound Med Biol. 20:1994;455-462.
16. Smith J.L., Evans D.H., Naylor A.R. Signals from dual gated TCD systems curious observations and possible explanations . Ultrasound Med Biol. 23:1997;15-24.
17. van Zuilen E.V., Mess W.H., Jansen C., van der Tweel I., van Gijn J., Ackerstaff R.G.A. Automatic embolus detection compared with human experts; a Doppler ultrasound study. Stroke. 27:1996;1840-1843.