In-vivo validation of fast spectral velocity estimation techniques

Research output: Contribution to journal › Journal article › Research › peer-review

Standard

In-vivo validation of fast spectral velocity estimation techniques. / Hansen, Kristoffer Lindskov; Gran, Fredrik; Pedersen, M M; Holfort, I K; Jensen, J A; Nielsen, Michael Bachmann.

In: Ultrasonics, Vol. 50, No. 1, 01.01.2010, p. 52-9.

Research output: Contribution to journal › Journal article › Research › peer-review

Harvard

Hansen, KL, Gran, F, Pedersen, MM, Holfort, IK, Jensen, JA & Nielsen, MB 2010, 'In-vivo validation of fast spectral velocity estimation techniques', Ultrasonics, vol. 50, no. 1, pp. 52-9. https://doi.org/10.1016/j.ultras.2009.07.007, https://doi.org/10.1016/j.ultras.2009.07.007

APA

Hansen, K. L., Gran, F., Pedersen, M. M., Holfort, I. K., Jensen, J. A., & Nielsen, M. B. (2010). In-vivo validation of fast spectral velocity estimation techniques. Ultrasonics, 50(1), 52-9. https://doi.org/10.1016/j.ultras.2009.07.007, https://doi.org/10.1016/j.ultras.2009.07.007

Vancouver

Hansen KL, Gran F, Pedersen MM, Holfort IK, Jensen JA, Nielsen MB. In-vivo validation of fast spectral velocity estimation techniques. Ultrasonics. 2010 Jan 1;50(1):52-9. https://doi.org/10.1016/j.ultras.2009.07.007, https://doi.org/10.1016/j.ultras.2009.07.007

Author

Hansen, Kristoffer Lindskov ; Gran, Fredrik ; Pedersen, M M ; Holfort, I K ; Jensen, J A ; Nielsen, Michael Bachmann. / In-vivo validation of fast spectral velocity estimation techniques. In: Ultrasonics. 2010 ; Vol. 50, No. 1. pp. 52-9.

Bibtex

@article{f9439ac4e44d493d955c8b3bd57e4246,
title = "In-vivo validation of fast spectral velocity estimation techniques",
abstract = "Spectrograms in medical ultrasound are usually estimated with Welch's method (WM). WM is dependent on an observation window (OW) of up to 256 emissions per estimate to achieve sufficient spectral resolution and contrast. Two adaptive filterbank methods have been suggested to reduce the OW: Blood spectral Power Capon (BPC) and the Blood Amplitude and Phase EStimation method (BAPES). Ten volunteers were scanned over the carotid artery. From each data set, 28 spectrograms were produced by combining four approaches (WM with a Hanning window (W.HAN), WM with a boxcar window (W.BOX), BPC and BAPES) and seven OWs (128, 64, 32, 16, 8, 4, 2). The full-width-at-half-maximum (FWHM) and the ratio between main and side-lobe levels were calculated at end-diastole for each spectrogram. Furthermore, all 280 spectrograms were randomized and presented to nine radiologists for visual evaluation: useful/not useful. BAPES and BPC compared to WM had better resolution (lower FWHM) for all OW0.05) at OW 128 and 64, while W.BOX scored less (p",
author = "Hansen, {Kristoffer Lindskov} and Fredrik Gran and Pedersen, {M M} and Holfort, {I K} and Jensen, {J A} and Nielsen, {Michael Bachmann}",
year = "2010",
month = jan,
day = "1",
doi = "10.1016/j.ultras.2009.07.007",
language = "English",
volume = "50",
pages = "52--9",
journal = "Ultrasonics",
issn = "0041-624X",
publisher = "Elsevier",
number = "1",

}

RIS

TY - JOUR

T1 - In-vivo validation of fast spectral velocity estimation techniques

AU - Hansen, Kristoffer Lindskov

AU - Gran, Fredrik

AU - Pedersen, M M

AU - Holfort, I K

AU - Jensen, J A

AU - Nielsen, Michael Bachmann

PY - 2010/1/1

Y1 - 2010/1/1

N2 - Spectrograms in medical ultrasound are usually estimated with Welch's method (WM). WM is dependent on an observation window (OW) of up to 256 emissions per estimate to achieve sufficient spectral resolution and contrast. Two adaptive filterbank methods have been suggested to reduce the OW: Blood spectral Power Capon (BPC) and the Blood Amplitude and Phase EStimation method (BAPES). Ten volunteers were scanned over the carotid artery. From each data set, 28 spectrograms were produced by combining four approaches (WM with a Hanning window (W.HAN), WM with a boxcar window (W.BOX), BPC and BAPES) and seven OWs (128, 64, 32, 16, 8, 4, 2). The full-width-at-half-maximum (FWHM) and the ratio between main and side-lobe levels were calculated at end-diastole for each spectrogram. Furthermore, all 280 spectrograms were randomized and presented to nine radiologists for visual evaluation: useful/not useful. BAPES and BPC compared to WM had better resolution (lower FWHM) for all OW0.05) at OW 128 and 64, while W.BOX scored less (p

AB - Spectrograms in medical ultrasound are usually estimated with Welch's method (WM). WM is dependent on an observation window (OW) of up to 256 emissions per estimate to achieve sufficient spectral resolution and contrast. Two adaptive filterbank methods have been suggested to reduce the OW: Blood spectral Power Capon (BPC) and the Blood Amplitude and Phase EStimation method (BAPES). Ten volunteers were scanned over the carotid artery. From each data set, 28 spectrograms were produced by combining four approaches (WM with a Hanning window (W.HAN), WM with a boxcar window (W.BOX), BPC and BAPES) and seven OWs (128, 64, 32, 16, 8, 4, 2). The full-width-at-half-maximum (FWHM) and the ratio between main and side-lobe levels were calculated at end-diastole for each spectrogram. Furthermore, all 280 spectrograms were randomized and presented to nine radiologists for visual evaluation: useful/not useful. BAPES and BPC compared to WM had better resolution (lower FWHM) for all OW0.05) at OW 128 and 64, while W.BOX scored less (p

U2 - 10.1016/j.ultras.2009.07.007

DO - 10.1016/j.ultras.2009.07.007

M3 - Journal article

C2 - 19666182

VL - 50

SP - 52

EP - 59

JO - Ultrasonics

JF - Ultrasonics

SN - 0041-624X

IS - 1

ER -

ID: 34111781