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Comparative Study
. 2006 Feb;101(2):231-8.
doi: 10.1016/j.tripleo.2005.02.078. Epub 2005 Dec 27.

Utility of diffusion-weighted images using fast asymmetric spin-echo sequences for detection of abscess formation in the head and neck region

Shinji Kito  1 , Yasuhiro Morimoto, Tatsurou Tanaka, Kazuhiro Tominaga, Manabu Habu, Hideo Kurokawa, Yoshihiro Yamashita, Shinobu Matsumoto, Yuji Shinohara, Sachiko Okabe, Yuka Matsufuji, Tetsu Takahashi, Jin-ichi Fukuda, Takeshi Ohba
Affiliations
Comparative Study

Utility of diffusion-weighted images using fast asymmetric spin-echo sequences for detection of abscess formation in the head and neck region

Shinji Kito et al. Oral Surg Oral Med Oral Pathol Oral Radiol Endod. 2006 Feb.

Abstract

Objective: The objective of this study was to evaluate the utility of new diffusion-weighted magnetic resonance images (DWI) using fast asymmetric spin-echo (FASE) sequences for the detection of abscess formation in patients with phlegmon in the oral and maxillofacial regions.

Methods: We compared diffusion-weighted images using FASE sequences with those using the gradient-echo type of echo-planar images (EPI) in 10 control volunteers and 10 patients with phlegmon in the oral and maxillofacial regions.

Results: Many kinds of tissues in the oral and maxillofacial regions were relatively well visualized in all subjects on FASE-DWI, but not well on EPI-DWI. Apparent diffusion coefficients calculated from FASE sequences in abscess areas of patients with phlegmon were significantly lower than those in abscess-free areas; however, apparent diffusion coefficients calculated from EPI were not significantly different due to prominent distortion in small sample size study.

Conclusions: We could accurately recognize the presence of abscess formation within inflammatory tissue in 5 patients with phlegmon using FASE-DWI. As an additional magnetic resonance examination, FASE-DWI might be useful in the detection of abscess formation in the oral and maxillofacial regions.

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