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Article: Multilayer appearance on contrast-enhanced susceptibility-weighted images on patients with brain abscesses: Possible origins and effects of postprocessing

TitleMultilayer appearance on contrast-enhanced susceptibility-weighted images on patients with brain abscesses: Possible origins and effects of postprocessing
Authors
Keywordsparamagnetic spherical shell model
multilayer appearance
contrast-enhanced susceptibility-weighted imaging
pyogenic brain abscess
abscess capsule
Issue Date2012
Citation
Journal of Magnetic Resonance Imaging, 2012, v. 36, n. 6, p. 1353-1361 How to Cite?
AbstractPurpose: To demonstrate the presence of a multilayer appearance of the capsule on contrast-enhanced (CE) susceptibility-weighted imaging (SWI) in patients with pyogenic brain abscesses. Possible origins for the appearance and effects of postprocessing settings are discussed. Materials and Methods: Fourteen patients with pyogenic brain abscesses underwent post gadolinium-enhanced SWI at 1.5 T. All SWI images were postprocessed with various filter and mask settings to compare the image appearance. Computer simulations using a paramagnetic spherical shell model were performed to verify the clinical findings. Results: Pyogenic brain abscesses demonstrated a multilayer appearance with a darkened ring within the enhanced capsule on CE-SWI in all patients. The multilayer appearance was slice-orientation-dependent, decreased with larger widths of the high-pass filter, and increased with larger numbers of phase mask multiplication operations, consistently on both simulation results and the clinical images. Conclusion: CE-SWI shows the multilayer appearance of the capsule in pyogenic brain abscesses, which may arise from postprocessing procedures originally designed to enhance susceptibility contrast. Although SWI may provide additional information valuable in the diagnosis of pyogenic brain abscesses, image interpretation should be exercised with caution, particularly for CE-SWI. © 2012 Wiley-Liss, Inc.
Persistent Identifierhttp://hdl.handle.net/10722/210107
ISSN
2015 Impact Factor: 3.25
2015 SCImago Journal Rankings: 1.683

 

DC FieldValueLanguage
dc.contributor.authorChang, Hing Chiu-
dc.contributor.authorChuang, Tzu Chao-
dc.contributor.authorChung, Hsiao Wen-
dc.contributor.authorLin, Huey Shyan-
dc.contributor.authorLai, Ping Hong-
dc.contributor.authorWeng, Mei Jui-
dc.contributor.authorFu, Jui Hsun-
dc.contributor.authorWang, Po Chin-
dc.contributor.authorLi, Shang Chieh-
dc.contributor.authorPan, Huay Ben-
dc.date.accessioned2015-05-22T06:06:39Z-
dc.date.available2015-05-22T06:06:39Z-
dc.date.issued2012-
dc.identifier.citationJournal of Magnetic Resonance Imaging, 2012, v. 36, n. 6, p. 1353-1361-
dc.identifier.issn1053-1807-
dc.identifier.urihttp://hdl.handle.net/10722/210107-
dc.description.abstractPurpose: To demonstrate the presence of a multilayer appearance of the capsule on contrast-enhanced (CE) susceptibility-weighted imaging (SWI) in patients with pyogenic brain abscesses. Possible origins for the appearance and effects of postprocessing settings are discussed. Materials and Methods: Fourteen patients with pyogenic brain abscesses underwent post gadolinium-enhanced SWI at 1.5 T. All SWI images were postprocessed with various filter and mask settings to compare the image appearance. Computer simulations using a paramagnetic spherical shell model were performed to verify the clinical findings. Results: Pyogenic brain abscesses demonstrated a multilayer appearance with a darkened ring within the enhanced capsule on CE-SWI in all patients. The multilayer appearance was slice-orientation-dependent, decreased with larger widths of the high-pass filter, and increased with larger numbers of phase mask multiplication operations, consistently on both simulation results and the clinical images. Conclusion: CE-SWI shows the multilayer appearance of the capsule in pyogenic brain abscesses, which may arise from postprocessing procedures originally designed to enhance susceptibility contrast. Although SWI may provide additional information valuable in the diagnosis of pyogenic brain abscesses, image interpretation should be exercised with caution, particularly for CE-SWI. © 2012 Wiley-Liss, Inc.-
dc.languageeng-
dc.relation.ispartofJournal of Magnetic Resonance Imaging-
dc.subjectparamagnetic spherical shell model-
dc.subjectmultilayer appearance-
dc.subjectcontrast-enhanced susceptibility-weighted imaging-
dc.subjectpyogenic brain abscess-
dc.subjectabscess capsule-
dc.titleMultilayer appearance on contrast-enhanced susceptibility-weighted images on patients with brain abscesses: Possible origins and effects of postprocessing-
dc.typeArticle-
dc.description.natureLink_to_subscribed_fulltext-
dc.identifier.doi10.1002/jmri.23766-
dc.identifier.pmid23097197-
dc.identifier.scopuseid_2-s2.0-84869392927-
dc.identifier.volume36-
dc.identifier.issue6-
dc.identifier.spage1353-
dc.identifier.epage1361-
dc.identifier.eissn1522-2586-

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