Visualization of clear echocardiographic images with near field noise reduction technique: experimental study and clinical experience

Journal of the American Society of Echocardiography : Official Publication of the American Society of Echocardiography
T HozumiJ Yoshikawa

Abstract

With transthoracic echocardiography, it is sometimes difficult to obtain a clear image of the apical portion of the heart because of noise near the transducer. To reduce this artifact, we have developed a new technique (near field noise reduction, NFNR) based on the digital filtering by using radiofrequency signals. This technique may be useful for the accurate measurement of the wall thickness of the myocardium in the near field. The objectives of these studies were (1) to determine the accuracy of this new technique for the measurement of wall thickness in the experimental study and (2) to determine whether the improvement in the image quality in the apical portion can be obtained in the clinical setting by using the NFNR technique. By using the NFNR technique, we measured wall thickness of three kinds of phantoms (wall thickness 9.0, 14.0, and 21.0 mm) moving at various velocities (5 to 80 mm/sec) in the water bath with artifact produced by a single probe. It was difficult to obtain clear echocardiographic images of the phantom and measure its wall thickness because of the artifact. By using the NFNR technique, on the other hand, the same phantom was clearly imaged. It was possible to measure the wall thickness of each phant...Continue Reading

References

Jan 1, 1979·Annals of Internal Medicine·A N DeMariaD T Mason
Jan 1, 1990·Journal of the American College of Cardiology·J G WebbE D Wigle
Oct 1, 1984·The American Journal of Cardiology·K MiyatakeY Nimura

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Citations

Mar 8, 2006·Der Anaesthesist·M NowakH K Eltzschig
Jun 30, 2010·Medical Image Analysis·K Y Esther LeungJohan G Bosch
Feb 18, 2016·IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control·Antonios Perperidis
Dec 27, 2005·Journal of the American Society of Echocardiography : Official Publication of the American Society of Echocardiography·S Michelle BierigArthur J Labovitz
Jul 23, 2015·International Journal of Biomedical Imaging·Javier S TurekIrad Yavneh

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