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Magn Reson Med. 2010 Jul;64(1):47-53. doi: 10.1002/mrm.22376.

Multishot PROPELLER for high-field preclinical MRI.

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  • 1Center for In Vivo Microscopy, Department of Radiology, Duke University Medical Center, Durham, North Carolina 27710, USA.

Abstract

With the development of numerous mouse models of cancer, there is a tremendous need for an appropriate imaging technique to study the disease evolution. High-field T(2)-weighted imaging using PROPELLER (Periodically Rotated Overlapping ParallEL Lines with Enhanced Reconstruction) MRI meets this need. The two-shot PROPELLER technique presented here provides (a) high spatial resolution, (b) high contrast resolution, and (c) rapid and noninvasive imaging, which enables high-throughput, longitudinal studies in free-breathing mice. Unique data collection and reconstruction makes this method robust against motion artifacts. The two-shot modification introduced here retains more high-frequency information and provides higher signal-to-noise ratio than conventional single-shot PROPELLER, making this sequence feasible at high fields, where signal loss is rapid. Results are shown in a liver metastases model to demonstrate the utility of this technique in one of the more challenging regions of the mouse, which is the abdomen.

(c) 2010 Wiley-Liss, Inc.

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