Abstract:
:Segmented interleaved echo planar imaging offers a fast and efficient approach to magnetic resonance angiography. Unfortunately, this technique is particularly sensitive to oblique flow in the imaging plane. In this work, a mathematical analysis of oblique flow effects for several types of k-space coverage is presented. The conventional linear acquisition scheme, an alternating centric and a nonalternating centric encoding scheme are compared with respect to their flow properties. It is shown both by simulations and imaging experiments that artifacts from oblique in-plane flow are effectively reduced by both centric reordered phase-encoding schemes. The nonalternating centric acquisition scheme is preferred to the alternating centric scheme due to the smoother phase error transition in k-space in the presence of obliquely-angled flow. Magn Reson Med 45:623-629, 2001.
journal_name
Magn Reson Medjournal_title
Magnetic resonance in medicineauthors
Beck G,Li D,Haacke EM,Noll TG,Schad LRdoi
10.1002/mrm.1084subject
Has Abstractpub_date
2001-04-01 00:00:00pages
623-9issue
4eissn
0740-3194issn
1522-2594pii
10.1002/mrm.1084journal_volume
45pub_type
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journal_title:Magnetic resonance in medicine
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journal_title:Magnetic resonance in medicine
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