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A combination of pa...
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Albinsson, JohnLund University,Lunds universitet,Avdelningen för Biomedicinsk teknik,Institutionen för biomedicinsk teknik,Institutioner vid LTH,Lunds Tekniska Högskola,Department of Biomedical Engineering,Departments at LTH,Faculty of Engineering, LTH
(author)
A combination of parabolic and grid slope interpolation for 2D tissue displacement estimations
- Article/chapterEnglish2017
Publisher, publication year, extent ...
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2016-11-11
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Springer Science and Business Media LLC,2017
Numbers
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LIBRIS-ID:oai:lup.lub.lu.se:0b80ae87-73d9-4202-b392-36aa53230ebb
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https://lup.lub.lu.se/record/0b80ae87-73d9-4202-b392-36aa53230ebbURI
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https://doi.org/10.1007/s11517-016-1593-7DOI
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Language:English
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Summary in:English
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Subject category:art swepub-publicationtype
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Subject category:ref swepub-contenttype
Notes
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Parabolic sub-sample interpolation for 2D block-matching motion estimation is computationally efficient. However, it is well known that the parabolic interpolation gives a biased motion estimate for displacements greater than |y.2| samples (y = 0, 1, …). Grid slope sub-sample interpolation is less biased, but it shows large variability for displacements close to y.0. We therefore propose to combine these sub-sample methods into one method (GS15PI) using a threshold to determine when to use which method. The proposed method was evaluated on simulated, phantom, and in vivo ultrasound cine loops and was compared to three sub-sample interpolation methods. On average, GS15PI reduced the absolute sub-sample estimation errors in the simulated and phantom cine loops by 14, 8, and 24% compared to sub-sample interpolation of the image, parabolic sub-sample interpolation, and grid slope sub-sample interpolation, respectively. The limited in vivo evaluation of estimations of the longitudinal movement of the common carotid artery using parabolic and grid slope sub-sample interpolation and GS15PI resulted in coefficient of variation (CV) values of 6.9, 7.5, and 6.8%, respectively. The proposed method is computationally efficient and has low bias and variance. The method is another step toward a fast and reliable method for clinical investigations of longitudinal movement of the arterial wall.
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Ahlgren, Åsa RydénLund University,Lunds universitet,Klinisk fysiologi och nuklearmedicin, Malmö,Forskargrupper vid Lunds universitet,Clinical Physiology and Nuclear Medicine, Malmö,Lund University Research Groups,Skåne University Hospital(Swepub:lu)klin-ary
(author)
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Jansson, TomasLund University,Lunds universitet,Medicinsk teknik, Lund,Sektion V,Institutionen för kliniska vetenskaper, Lund,Medicinska fakulteten,Biomedical Engineering, Lund,Section V,Department of Clinical Sciences, Lund,Faculty of Medicine,Skåne University Hospital(Swepub:lu)elma-tja
(author)
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Cinthio, MagnusLund University,Lunds universitet,Avdelningen för Biomedicinsk teknik,Institutionen för biomedicinsk teknik,Institutioner vid LTH,Lunds Tekniska Högskola,Department of Biomedical Engineering,Departments at LTH,Faculty of Engineering, LTH(Swepub:lu)elma-mpe
(author)
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Avdelningen för Biomedicinsk teknikInstitutionen för biomedicinsk teknik
(creator_code:org_t)
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In:Medical & Biological Engineering & Computing: Springer Science and Business Media LLC55:8, s. 1327-13380140-01181741-0444
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