|
|
|
|
| LEADER |
01000naa a22002652 4500 |
| 001 |
NLM217422047 |
| 003 |
DE-627 |
| 005 |
20231224034030.0 |
| 007 |
cr uuu---uuuuu |
| 008 |
231224s2012 xx |||||o 00| ||eng c |
| 024 |
7 |
|
|a 10.1109/TUFFC.2012.2245
|2 doi
|
| 028 |
5 |
2 |
|a pubmed24n0724.xml
|
| 035 |
|
|
|a (DE-627)NLM217422047
|
| 035 |
|
|
|a (NLM)22547278
|
| 040 |
|
|
|a DE-627
|b ger
|c DE-627
|e rakwb
|
| 041 |
|
|
|a eng
|
| 100 |
1 |
|
|a Heyde, Brecht
|e verfasserin
|4 aut
|
| 245 |
1 |
0 |
|a Regional cardiac motion and strain estimation in three-dimensional echocardiography
|b a validation study in thick-walled univentricular phantoms
|
| 264 |
|
1 |
|c 2012
|
| 336 |
|
|
|a Text
|b txt
|2 rdacontent
|
| 337 |
|
|
|a ƒaComputermedien
|b c
|2 rdamedia
|
| 338 |
|
|
|a ƒa Online-Ressource
|b cr
|2 rdacarrier
|
| 500 |
|
|
|a Date Completed 30.08.2012
|
| 500 |
|
|
|a Date Revised 01.05.2012
|
| 500 |
|
|
|a published: Print
|
| 500 |
|
|
|a Citation Status MEDLINE
|
| 520 |
|
|
|a Automatic quantification of regional left ventricular deformation in volumetric ultrasound data remains challenging. Many methods have been proposed to extract myocardial motion, including techniques using block matching, phase-based correlation, differential optical flow methods, and image registration. Our lab previously presented an approach based on elastic registration of subsequent volumes using a B-spline representation of the underlying transformation field. Encouraging results were obtained for the assessment of global left ventricular function, but a thorough validation on a regional level was still lacking. For this purpose, univentricular thick-walled cardiac phantoms were deformed in an experimental setup to locally assess strain accuracy against sonomicrometry as a reference method and to assess whether regions containing stiff inclusions could be detected. Our method showed good correlations against sonomicrometry: r(2) was 0.96, 0.92, and 0.84 for the radial (ε(RR)), longitudinal (ε(LL)), and circumferential (ε(CC)) strain, respectively. Absolute strain errors and strain drift were low for ε(LL) (absolute mean error: 2.42%, drift: -1.05%) and ε(CC) (error: 1.79%, drift: -1.33%) and slightly higher for ε(RR) (error: 3.37%, drift: 3.05%). The discriminative power of our methodology was adequate to resolve full transmural inclusions down to 17 mm in diameter, although the inclusion-to-surrounding tissue stiffness ratio was required to be at least 5:2 (absolute difference of 39.42 kPa). When the inclusion-to-surrounding tissue stiffness ratio was lowered to approximately 2:1 (absolute difference of 22.63 kPa), only larger inclusions down to 27 mm in diameter could still be identified. Radial strain was found not to be reliable in identifying dysfunctional regions
|
| 650 |
|
4 |
|a Journal Article
|
| 650 |
|
4 |
|a Research Support, Non-U.S. Gov't
|
| 700 |
1 |
|
|a Cygan, Szymon
|e verfasserin
|4 aut
|
| 700 |
1 |
|
|a Choi, Hon Fai
|e verfasserin
|4 aut
|
| 700 |
1 |
|
|a Lesniak-Plewinska, Beata
|e verfasserin
|4 aut
|
| 700 |
1 |
|
|a Barbosa, Daniel
|e verfasserin
|4 aut
|
| 700 |
1 |
|
|a Elen, An
|e verfasserin
|4 aut
|
| 700 |
1 |
|
|a Claus, Piet
|e verfasserin
|4 aut
|
| 700 |
1 |
|
|a Loeckx, Dirk
|e verfasserin
|4 aut
|
| 700 |
1 |
|
|a Kaluzynski, Krzysztof
|e verfasserin
|4 aut
|
| 700 |
1 |
|
|a D'hooge, Jan
|e verfasserin
|4 aut
|
| 773 |
0 |
8 |
|i Enthalten in
|t IEEE transactions on ultrasonics, ferroelectrics, and frequency control
|d 1986
|g 59(2012), 4 vom: 01. Apr., Seite 668-82
|w (DE-627)NLM098181017
|x 1525-8955
|7 nnns
|
| 773 |
1 |
8 |
|g volume:59
|g year:2012
|g number:4
|g day:01
|g month:04
|g pages:668-82
|
| 856 |
4 |
0 |
|u http://dx.doi.org/10.1109/TUFFC.2012.2245
|3 Volltext
|
| 912 |
|
|
|a GBV_USEFLAG_A
|
| 912 |
|
|
|a SYSFLAG_A
|
| 912 |
|
|
|a GBV_NLM
|
| 912 |
|
|
|a GBV_ILN_22
|
| 912 |
|
|
|a GBV_ILN_24
|
| 912 |
|
|
|a GBV_ILN_350
|
| 951 |
|
|
|a AR
|
| 952 |
|
|
|d 59
|j 2012
|e 4
|b 01
|c 04
|h 668-82
|