Abstract
Retrospective correction of magnetic resonance (MR) image data to eliminate the effects of patient motion is possible with use of adaptive correction techniques. These methods require an accurate record of the motion that occurs during imaging. The authors evaluated whether motion information suitable for adaptive correction could be obtained from phase-encoded image data alone rather than from separate navigator echoes. Once such displacements were estimated from the image data, motion correction proceeded with use of the same algorithm used for the navigator echoes. The results show that image data alone can be used to effectively measure view-to-view displacements in phantoms, but external markers are required for accurate measurement during axial head imaging of patients.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 139-142 |
| Number of pages | 4 |
| Journal | Radiology |
| Volume | 179 |
| Issue number | 1 |
| State | Published - 1991 |
Fingerprint
Keywords
- Magnetic resonance (MR), image processing, 10.1214
- Magnetic resonance (MR), motion correction
- Magnetic resonance (MR), quality assurance, 10.1214
ASJC Scopus subject areas
- Radiological and Ultrasound Technology
Cite this
Adaptive motion compensation in MR imaging without use of navigator echoes. / Felmlee, J. P.; Ehman, Richard Lorne; Riederer, Stephen J; Korin, H. W.
In: Radiology, Vol. 179, No. 1, 1991, p. 139-142.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Adaptive motion compensation in MR imaging without use of navigator echoes
AU - Felmlee, J. P.
AU - Ehman, Richard Lorne
AU - Riederer, Stephen J
AU - Korin, H. W.
PY - 1991
Y1 - 1991
N2 - Retrospective correction of magnetic resonance (MR) image data to eliminate the effects of patient motion is possible with use of adaptive correction techniques. These methods require an accurate record of the motion that occurs during imaging. The authors evaluated whether motion information suitable for adaptive correction could be obtained from phase-encoded image data alone rather than from separate navigator echoes. Once such displacements were estimated from the image data, motion correction proceeded with use of the same algorithm used for the navigator echoes. The results show that image data alone can be used to effectively measure view-to-view displacements in phantoms, but external markers are required for accurate measurement during axial head imaging of patients.
AB - Retrospective correction of magnetic resonance (MR) image data to eliminate the effects of patient motion is possible with use of adaptive correction techniques. These methods require an accurate record of the motion that occurs during imaging. The authors evaluated whether motion information suitable for adaptive correction could be obtained from phase-encoded image data alone rather than from separate navigator echoes. Once such displacements were estimated from the image data, motion correction proceeded with use of the same algorithm used for the navigator echoes. The results show that image data alone can be used to effectively measure view-to-view displacements in phantoms, but external markers are required for accurate measurement during axial head imaging of patients.
KW - Magnetic resonance (MR), image processing, 10.1214
KW - Magnetic resonance (MR), motion correction
KW - Magnetic resonance (MR), quality assurance, 10.1214
UR - http://www.scopus.com/inward/record.url?scp=0026013137&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0026013137&partnerID=8YFLogxK
M3 - Article
VL - 179
SP - 139
EP - 142
JO - Radiology
JF - Radiology
SN - 0033-8419
IS - 1
ER -