Utility of diffusion-weighted images using fast asymmetric spin-echo sequences for detection of abscess formation in the head and neck region.
作者信息
Kito Shinji, Morimoto Yasuhiro, Tanaka Tatsurou, Tominaga Kazuhiro, Habu Manabu, Kurokawa Hideo, Yamashita Yoshihiro, Matsumoto Shinobu, Shinohara Yuji, Okabe Sachiko, Matsufuji Yuka, Takahashi Tetsu, Fukuda Jin-ichi, Ohba Takeshi
机构信息
Department of Oral Diagnostic Science, Kyushu Dental College, Kitakyushu, Japan.
出版信息
Oral Surg Oral Med Oral Pathol Oral Radiol Endod. 2006 Feb;101(2):231-8. doi: 10.1016/j.tripleo.2005.02.078. Epub 2005 Dec 27.
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.
Zotero 插件