Technical NoteMultishot Diffusion-Weighted PROPELLER Magnetic Resonance Imaging of the AbdomenDeng, Jie MS*†; Miller, Frank H. MD*; Salem, Riad MD*; Omary, Reed A. MD*†; Larson, Andrew C. PhD*†Author Information From the Departments of *Radiology and †Biomedical Engineering, Northwestern University, Chicago, Illinois. Received May 18, 2006, and accepted for publication, after revision, July 5, 2006. Reprints: Andrew C. Larson, PhD, Northwestern University, Department of Radiology, 448 E. Ontario, Suite 700, Chicago, IL 60611. E-mail: [email protected]. Investigative Radiology: October 2006 - Volume 41 - Issue 10 - p 769-775 doi: 10.1097/01.rli.0000236808.84746.95 Buy Metrics Abstract Objective: The objective of this study was to evaluate the feasibility of using multishot PROPELLER for diffusion-weighted imaging (DWI) of the abdomen. Materials and Methods: Diffusion-weighted abdominal imaging was performed in 9 healthy volunteers and 3 patients using both single-shot DW-SE-EPI and multishot DW-PROPELLER (BLADE sequence). We compared ADC measurements in phantoms, liver and pancreatic tissues and performed qualitative comparisons of the diffusion-weighted images and ADC maps provided by these 2 techniques. Results: DW-PROPELLER significantly improved image quality (P < 0.05) with reduced geometric distortion and artifact. The ADC values of phantoms and abdominal organs measured by DW-PROPELLER were generally greater than those measured by single-shot DW-SE-EPI. The ADC values measured by both DWI techniques were significantly different for liver tissues but not for pancreatic tissues (P < 0.05). Preliminary patient studies demonstrated clearly distinguished lesion areas from surrounding normal liver tissues in the DW-PROPELLER images. DW-PROPELLER offers the potential for high-resolution DWI of the abdomen. Conclusions: The multishot DW-PROPELLER sequence is a promising technique for DWI of abdominal organs. Future clinical studies will evaluate the use of DW-PROPELLER technique for abdominal oncologic imaging applications. © 2006 Lippincott Williams & Wilkins, Inc.