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00000ctm a2200000Ka 4500 |
| 001 |
in00001645461 |
| 005 |
20190325102929.0 |
| 008 |
020123s2001 xx a b 000 0 eng d |
| 035 |
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|a (OCoLC)ocm48843496
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| 037 |
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|a 99-11678
|b UMI
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| 040 |
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|a TXA
|c TXA
|d UtOrBLW
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| 049 |
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|a TXAM
|a TXAR
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| 099 |
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|a 2001
|a Dissertation
|a B342
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| 100 |
1 |
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|a Bankson, James Andrew,
|d 1972-
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| 245 |
1 |
3 |
|a An investigation of the practical limitations of rapid, phased array encoded magnetic resonance imaging /
|c by James Andrew Bankson.
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| 264 |
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1 |
|a [Place of publication not identified] :
|b [publisher not identified] ;
|c 2001.
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| 300 |
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|a xvi, 231 leaves :
|b illustrations ;
|c 28 cm.
|
| 336 |
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|a text
|b txt
|2 rdacontent
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| 337 |
|
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|a unmediated
|b n
|2 rdamedia
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| 338 |
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|a volume
|b nc
|2 rdacarrier
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| 502 |
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|b Ph. D.
|c Texas A&M University
|d 2001.
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| 504 |
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|a Includes bibliographical references (leaves 203-209).
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| 500 |
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|a Vita.
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| 500 |
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|a "Major Subject: Electrical Engineering".
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| 530 |
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|a Issued also on microfiche from University Microfilm Inc.
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| 520 |
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|a Parallel and partially parallel imaging techniques have been demonstrated to utilize spatial information inherent in phased array receive coil sensitivities to achieve faster image acquisition. Such strategies can be considered as part of a broad class of alternative reconstruction algorithms that seek to minimize the impact of patient motion on image quality, which is accomplished in this case by reducing the amount of time that motion that can occur during image acquisition. Additionally, these techniques can allow higher resolution images to be generated in a fixed amount of imaging time, or an increase in image refresh rates for real-time imaging applications. A number of different approaches to parallel and partially parallel imaging have been suggested in recent years, and there has been extensive debate as to the relative merits of each. This work addresses realistic limitations of these techniques through three approaches. First, an existing multi-channel hardware architecture is refined and shown to be useful in increasing the number of array elements supported on virtually any console system to demonstrate that the ultimate limitations are not a function of available receiver hardware. Second, current partially parallel algorithms are shown to be equivalent, differing only in the filter scheme chosen to reject the partially parallel aliasing function. Finally, it is shown that each of these techniques can only be used for a limited amount of acceleration, depending on image plane depth, desired field of view, and the signal-to-noise ratio achieved by the phased array system.
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| 650 |
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4 |
|a Major electrical engineering.
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| 856 |
4 |
1 |
|u http://proxy.library.tamu.edu/login?url=http://proquest.umi.com/pqdweb?did=728908761&sid=1&Fmt=2&clientId=2945&RQT=309&VName=PQD
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| 948 |
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|a cataloged
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|c 2002/1/23
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| 952 |
f |
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|p noncirc
|a Texas A&M University
|b College Station
|c Cushing Memorial Library & Archives
|s cush tdrm
|d Cushing: Theses & Dissertations Microforms (Does not check out)
|t 0
|e 2001 Dissertation B342
|h Other scheme
|i unmediated -- volume
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| 952 |
f |
f |
|a Texas A&M University
|b College Station
|c Electronic Resources
|s www_evans
|d Available Online
|t 0
|e 2001 Dissertation B342
|h Other scheme
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| 998 |
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|a 2001 Dissertation B342
|t 0
|l Available Online
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| 998 |
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|a 2001 Dissertation B342
|t 0
|l Cushing: Theses & Dissertations Microforms (Does not check out)
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