Ependymoma MRI: Difference between revisions

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<ref name=radio> Image courtesy of  Dr Frank Gaillard. [http://www.radiopaedia.org Radiopaedia](original file [http://radiopaedia.org/cases/ependymoma-lateral-ventricle ‘’here’’]).[http://radiopaedia.org/licence Creative Commons BY-SA-NC]</ref>
A91344c612b07b087964a93ee047df big gallery.jpg|T1<ref name=radio> Image courtesy of  Dr Frank Gaillard. [http://www.radiopaedia.org Radiopaedia](original file [http://radiopaedia.org/cases/ependymoma-lateral-ventricle ‘’here’’]).[http://radiopaedia.org/licence Creative Commons BY-SA-NC]</ref>
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73c54460c3e8d80f3d18cd522ed152 big gallery.jpg|T2<ref name=radio> Image courtesy of  Dr Frank Gaillard. [http://www.radiopaedia.org Radiopaedia](original file [http://radiopaedia.org/cases/ependymoma-lateral-ventricle ‘’here’’]).[http://radiopaedia.org/licence Creative Commons BY-SA-NC]</ref>
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Ependymoma-lateral-ventricle(5).jpg|FLAIR<ref name=radio> Image courtesy of  Dr Frank Gaillard. [http://www.radiopaedia.org Radiopaedia](original file [http://radiopaedia.org/cases/ependymoma-lateral-ventricle ‘’here’’]).[http://radiopaedia.org/licence Creative Commons BY-SA-NC]</ref>
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Ependymoma-lateral-ventricle(7).jpg|T1<ref name=radio> Image courtesy of  Dr Frank Gaillard. [http://www.radiopaedia.org Radiopaedia](original file [http://radiopaedia.org/cases/ependymoma-lateral-ventricle ‘’here’’]).[http://radiopaedia.org/licence Creative Commons BY-SA-NC]</ref>
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Ependymoma-lateral-ventricle(97777).jpg|T1+C<ref name=radio> Image courtesy of  Dr Frank Gaillard. [http://www.radiopaedia.org Radiopaedia](original file [http://radiopaedia.org/cases/ependymoma-lateral-ventricle ‘’here’’]).[http://radiopaedia.org/licence Creative Commons BY-SA-NC]</ref>
 
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Ependymoma-lateral-ventricle(9).jpg|DWI<ref name=radio> Image courtesy of  Dr Frank Gaillard. [http://www.radiopaedia.org Radiopaedia](original file [http://radiopaedia.org/cases/ependymoma-lateral-ventricle ‘’here’’]).[http://radiopaedia.org/licence Creative Commons BY-SA-NC]</ref></gallery>


==References==
==References==

Revision as of 18:34, 7 October 2015

Ependymoma Microchapters

Home

Patient Information

Overview

Historical Perspective

Classification

Pathophysiology

Causes

Epidemiology and Demographics

Risk Factors

Differentiating Ependymoma from other Diseases

Natural History, Complications and Prognosis

Diagnosis

History and Symptoms

Physical Examination

Staging

Laboratory Findings

CT

MRI

Ultrasound

Other Imaging Findings

Other Diagnostic Studies

Treatment

Medical Therapy

Surgery

Primary Prevention

Secondary Prevention

Cost-Effectiveness of Therapy

Future or Investigational Therapies

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Case #1

Ependymoma MRI On the Web

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Ongoing Trials at Clinical Trials.gov

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NICE Guidance

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Ependymoma MRI in the news

Blogs on Ependymoma MRI

Directions to Hospitals Treating Ependymoma

Risk calculators and risk factors for Ependymoma MRI

Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]

Overview

Imaging plays a central role in the diagnosis of ependymoma. On MRI brain, ependymoma is characterized by isointense to hypointense on T1-weighted scans, or hyperintense to white matter on T2-weighted MRI.

MRI

Brain

  • T1
  • Solid portions of ependymoma typically are isointense to hypointense relative to white matter 7
  • T2
  • Hyperintense to white matter
  • More reliable in differentiating tumour margins than non-contrast T1-weighted images (but less reliable than contrast enhanced T1)
  • T2* (e.g. SWI)
  • T1 C+ (Gd)
  • Enhancement present but heterogeneous
  • Enhancement with gadolinium is useful in differentiating tumour from adjacent vasogenic oedema and normal brain parenchyma
  • DWI/ADC
  • Restricted diffusion may be seen in solid components especially in anaplastic tumour
  • Diffusion should be interpreted with caution in masses with significant haemorrhage or calcification
  • MRS

References

  1. ↑ 1.0 1.1 1.2 1.3 1.4 1.5 Image courtesy of Dr Frank Gaillard. Radiopaedia(original file ‘’here’’).Creative Commons BY-SA-NC

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