Spatial Restriction within Intracranial Epidermoid Cysts Observed Using Short Diffusion-time Diffusion-weighted Imaging

Christina Andica; Masaaki Hori; Kouhei Kamiya; Saori Koshino; Akifumi Hagiwara; Koji Kamagata; Issei Fukunaga; Nozomi Hamasaki; Michimasa Suzuki; Thorsten Feiweier; Katsutoshi Murata; Atsushi Arakawa; Akihide Kondo; Osamu Akiyama; Shigeki Aoki

doi:10.2463/mrms.cr.2017-0111

Case Report

Spatial Restriction within Intracranial Epidermoid Cysts Observed Using Short Diffusion-time Diffusion-weighted Imaging

Christina Andica, Masaaki Hori, Kouhei Kamiya, Saori Koshino, Akifumi Hagiwara, Koji Kamagata, Issei Fukunaga, Nozomi Hamasaki, Michimasa Suzuki, Thorsten Feiweier, Katsutoshi Murata, Atsushi Arakawa, Akihide Kondo, Osamu Akiyama, Shigeki Aoki

Author information

Christina Andica
Department of Radiology, Juntendo University Graduate School of Medicine
Masaaki Hori
Department of Radiology, Juntendo University Graduate School of Medicine
Kouhei Kamiya
Department of Radiology, Graduate School of Medicine, The University of Tokyo
Saori Koshino
Department of Radiology, Juntendo University Graduate School of Medicine
Department of Radiology, Graduate School of Medicine, The University of Tokyo
Akifumi Hagiwara
Department of Radiology, Juntendo University Graduate School of Medicine
Department of Radiology, Graduate School of Medicine, The University of Tokyo
Koji Kamagata
Department of Radiology, Juntendo University Graduate School of Medicine
Issei Fukunaga
Department of Radiology, Juntendo University Graduate School of Medicine
Nozomi Hamasaki
Department of Radiology, Juntendo University Graduate School of Medicine
Michimasa Suzuki
Department of Radiology, Juntendo University Graduate School of Medicine
Thorsten Feiweier
Siemens Healthcare GmbH
Katsutoshi Murata
Siemens Healthcare Japan KK
Atsushi Arakawa
Department of Human Pathology, Juntendo University School of Medicine
Akihide Kondo
Department of Neurosurgery, Juntendo University School of Medicine
Osamu Akiyama
Department of Neurosurgery, Juntendo University School of Medicine
Shigeki Aoki
Department of Radiology, Juntendo University Graduate School of Medicine

Keywords: diffusion-weighted imaging, oscillating gradient spin-echo, restricted diffusion, tissue microstructure, epidermoid cyst

JOURNAL OPEN ACCESS

2018 Volume 17 Issue 3 Pages 269-272

DOI https://doi.org/10.2463/mrms.cr.2017-0111

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Abstract

We report two cases of pathologically proven intracranial epidermoid cysts. Both cases were scanned with diffusion-weighted imaging using pulsed gradient spin-echo (PGSE) and oscillating gradient spin-echo (OGSE; 50 Hz) prototype sequences with diffusion times of 47.3 ms and 8.5 ms, respectively. The apparent diffusion coefficient measured by OGSE was higher than that measured by PGSE, indicating the spatial restriction of water diffusion in the laminated keratin layers within the cyst as demonstrated by histopathology.

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