Comparison of MRI and PET as Potential Surrogate Endpoints for Treatment Response After Stereotactic Radiosurgery in

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Updated: Feb 5, 2026

Stereotactic Radiosurgery for Gynecologic Cancer
10:35

Stereotactic Radiosurgery for Gynecologic Cancer

Published on: April 17, 2012

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Chong Hyun Suh1, Ho Sung Kim1, Seung Chai Jung1

  • 11 Department of Radiology and Research Institute of Radiology, University of Ulsan College of Medicine, Asan Medical Center, 86 Asanbyeongwon-Gil, Songpa-Gu, Seoul 138-736, Republic of Korea.

AJR. American Journal of Roentgenology
|September 22, 2018
PubMed
Abstract

Insights

Magnetic Resonance Imaging (MRI) and Positron Emission Tomography (PET) effectively detect tumor recurrence after brain metastasis treatment. Advanced MRI demonstrated superior diagnostic performance compared to PET.

Area of Science:

  • Neuroradiology
  • Oncology Imaging
  • Radiotherapy Assessment

Background:

  • Differentiating tumor recurrence from radiation necrosis is crucial for patients with brain metastases treated with stereotactic radiosurgery.
  • Accurate diagnostic tools are essential for guiding subsequent treatment decisions.

Purpose of the Study:

  • To compare the diagnostic performance of MRI and PET in distinguishing tumor recurrence from radiation necrosis.
  • To evaluate advanced MRI techniques against PET for this diagnostic challenge.

Main Methods:

  • A systematic review and meta-analysis of studies comparing MRI and PET.
  • Searched Ovid-Medline and Embase databases up to November 11, 2017.
  • Used hierarchic logistic regression modeling and metaregression to pool sensitivity and specificity.

Main Results:

  • Twenty studies (728 patients, 872 metastases) were included.
  • MRI: pooled sensitivity 84%, specificity 88%. PET: pooled sensitivity 84%, specificity 86%.
  • Advanced MRI showed significantly higher diagnostic performance than PET (sensitivity 86%, specificity 95% vs. PET's 84%/86%).

Conclusions:

  • Both MRI and PET demonstrate high diagnostic performance for detecting tumor recurrence post-stereotactic radiosurgery.
  • No significant difference was found between conventional MRI and PET.
  • Advanced MRI, specifically perfusion MRI, offers superior diagnostic accuracy compared to PET.
Keywords:
MRIPETmetastasisperfusionradiosurgery

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