Abstract
Displacement fields are important to analyze deformation, which is associated with functional and material tissue properties often used as indicators of health. Magnetic resonance imaging (MRI) techniques like DENSE and image registration methods like Hyperelastic Warping have been used to produce pixel-level deformation fields that are desirable in high-resolution analysis. However, DENSE can be complicated by challenges associated with image phase unwrapping, in particular offset determination. On the other hand, Hyperelastic Warping can be hampered by low local image contrast. The current work proposes a novel approach for measuring tissue displacement with both DENSE and Hyperelastic Warping, incorporating physically accurate displacements obtained by the latter to improve phase characterization in DENSE. The validity of the proposed technique is demonstrated using numerical and physical phantoms, and in vivo small animal cardiac MRI.
| Original language | English (US) |
|---|---|
| Article number | 6767030 |
| Pages (from-to) | 1350-1362 |
| Number of pages | 13 |
| Journal | IEEE transactions on medical imaging |
| Volume | 33 |
| Issue number | 6 |
| DOIs | |
| State | Published - Jan 1 2014 |
| Externally published | Yes |
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Keywords
- Cardiac deformation
- Cardiac imaging
- Magnetic resonance displacement encoding
- Magnetic resonance imaging (MRI)
- Weighted phase imaging
ASJC Scopus subject areas
- Software
- Radiological and Ultrasound Technology
- Computer Science Applications
- Electrical and Electronic Engineering
Cite this
Accurate high-resolution measurements of 3-D tissue dynamics with registration-enhanced displacement encoded MRI. / Gomez, Arnold; Merchant, Samer S.; Hsu, Edward W.
In: IEEE transactions on medical imaging, Vol. 33, No. 6, 6767030, 01.01.2014, p. 1350-1362.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Accurate high-resolution measurements of 3-D tissue dynamics with registration-enhanced displacement encoded MRI
AU - Gomez, Arnold
AU - Merchant, Samer S.
AU - Hsu, Edward W.
PY - 2014/1/1
Y1 - 2014/1/1
N2 - Displacement fields are important to analyze deformation, which is associated with functional and material tissue properties often used as indicators of health. Magnetic resonance imaging (MRI) techniques like DENSE and image registration methods like Hyperelastic Warping have been used to produce pixel-level deformation fields that are desirable in high-resolution analysis. However, DENSE can be complicated by challenges associated with image phase unwrapping, in particular offset determination. On the other hand, Hyperelastic Warping can be hampered by low local image contrast. The current work proposes a novel approach for measuring tissue displacement with both DENSE and Hyperelastic Warping, incorporating physically accurate displacements obtained by the latter to improve phase characterization in DENSE. The validity of the proposed technique is demonstrated using numerical and physical phantoms, and in vivo small animal cardiac MRI.
AB - Displacement fields are important to analyze deformation, which is associated with functional and material tissue properties often used as indicators of health. Magnetic resonance imaging (MRI) techniques like DENSE and image registration methods like Hyperelastic Warping have been used to produce pixel-level deformation fields that are desirable in high-resolution analysis. However, DENSE can be complicated by challenges associated with image phase unwrapping, in particular offset determination. On the other hand, Hyperelastic Warping can be hampered by low local image contrast. The current work proposes a novel approach for measuring tissue displacement with both DENSE and Hyperelastic Warping, incorporating physically accurate displacements obtained by the latter to improve phase characterization in DENSE. The validity of the proposed technique is demonstrated using numerical and physical phantoms, and in vivo small animal cardiac MRI.
KW - Cardiac deformation
KW - Cardiac imaging
KW - Magnetic resonance displacement encoding
KW - Magnetic resonance imaging (MRI)
KW - Weighted phase imaging
UR - http://www.scopus.com/inward/record.url?scp=84901919536&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84901919536&partnerID=8YFLogxK
U2 - 10.1109/TMI.2014.2311755
DO - 10.1109/TMI.2014.2311755
M3 - Article
C2 - 24771572
AN - SCOPUS:84901919536
VL - 33
SP - 1350
EP - 1362
JO - IEEE Transactions on Medical Imaging
JF - IEEE Transactions on Medical Imaging
SN - 0278-0062
IS - 6
M1 - 6767030
ER -