PMID- 16964615
OWN - NLM
STAT- MEDLINE
DCOM- 20070119
LR  - 20150525
IS  - 0740-3194 (Print)
IS  - 0740-3194 (Linking)
VI  - 56
IP  - 4
DP  - 2006 Oct
TI  - High-resolution continuously acquired peripheral MR angiography featuring partial 
      parallel imaging GRAPPA.
PG  - 859-65
AB  - Continuously-moving-table MRI, in contrast to traditional multistation 
      techniques, potentially can improve the scan time efficiency of whole-body 
      applications and provide seamless images of an extended field of view (FOV). 
      Contrast-enhanced MR angiography (CE-MRA) in particular requires high spatial 
      resolution and at the same time has rigid scan time constraints due to the 
      limited arterial contrast window. In this study a reconstruction method for 
      continuously acquired 3D data sets during table movement was combined with a 
      self-calibrated partial parallel imaging algorithm (generalized autocalibrating 
      partially parallel acquisitions (GRAPPA)). The method was applied to peripheral 
      CE-MRA and compared with a standard continuously-moving-table MRA protocol. The 
      gain in scan time was used to increase the data acquisition matrix and decrease 
      the slice thickness. The method was evaluated in five healthy volunteers and 
      applied to one patient with peripheral arterial occlusive disease (PAOD). The 
      protocols were intraindividually compared with respect to the signal-to-noise 
      ratio (SNR) and contrast-to-noise ratio (CNR) in selected vessel segments, as 
      well as overall vessel depiction. The combination of the 
      continuously-moving-table technique with parallel imaging enabled the acquisition 
      of seamless peripheral 3D MRA with increased resolution and an overall crisper 
      appearance.
FAU - Zenge, Michael O
AU  - Zenge MO
AD  - Department of Diagnostic and Interventional Radiology and Neuroradiology, 
      University Hospital Essen, Essen, Germany. michael.zenge@uni-duisburg-essen.de
FAU - Vogt, Florian M
AU  - Vogt FM
FAU - Brauck, Katja
AU  - Brauck K
FAU - Jokel, Michaela
AU  - Jokel M
FAU - Barkhausen, Joerg
AU  - Barkhausen J
FAU - Kannengiesser, Stephan
AU  - Kannengiesser S
FAU - Ladd, Mark E
AU  - Ladd ME
FAU - Quick, Harald H
AU  - Quick HH
LA  - eng
PT  - Journal Article
PL  - United States
TA  - Magn Reson Med
JT  - Magnetic resonance in medicine
JID - 8505245
RN  - 0 (Contrast Media)
SB  - IM
MH  - Algorithms
MH  - Contrast Media
MH  - Humans
MH  - Image Processing, Computer-Assisted
MH  - Imaging, Three-Dimensional
MH  - Leg/*blood supply
MH  - Magnetic Resonance Angiography/*methods
MH  - Peripheral Vascular Diseases/*diagnosis
EDAT- 2006/09/12 09:00
MHDA- 2007/01/20 09:00
CRDT- 2006/09/12 09:00
PHST- 2006/09/12 09:00 [pubmed]
PHST- 2007/01/20 09:00 [medline]
PHST- 2006/09/12 09:00 [entrez]
AID - 10.1002/mrm.21033 [doi]
PST - ppublish
SO  - Magn Reson Med. 2006 Oct;56(4):859-65. doi: 10.1002/mrm.21033.