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TU-E-217BCD-07: Pilot Study on Consistency in Size Metrics for a Multimodality PEM/MR Breast Imaging Approach.

M Sadinski1,1,1,2,2,1, M Giger1,1,1,2,2,1, K Drukker1,1,1,2,2,1

  • 1University Chicago, Chicago, IL.

Medical Physics
|May 19, 2017
PubMed
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Breast imaging using PEM and MRI shows consistent lesion size metrics. This multimodality approach supports accurate cancer staging and therapy evaluation.

Keywords:
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Area of Science:

  • Medical imaging
  • Radiology
  • Oncology

Background:

  • Multimodality breast imaging combines data from different systems.
  • Accurate size metrics are crucial for cancer staging and treatment response assessment.

Purpose of the Study:

  • To evaluate the consistency of lesion size metrics between PEM and MRI.
  • To determine the effectiveness of a combined PEM/MRI approach for breast imaging.

Main Methods:

  • 42 cases (16 patients, 28 lesions) with both PEM and MRI data were analyzed.
  • Lesion volumes and equivalent sphere diameters (ESD) were calculated.
  • Manual and semi-automatic delineation methods were employed for efficiency.

Main Results:

  • A significant linear trend and correlation (0.547) were found between PEM and MRI volumes.
  • The equivalent sphere diameter (ESD) metric showed higher consistency (correlation 0.733) between modalities.
  • High concordance (0.717) for ESD indicates excellent reproducibility.

Conclusions:

  • PEM/MRI multimodality imaging offers a powerful tool for cancer staging and therapy evaluation.
  • Size metrics derived from PEM and MRI are consistent, supporting the utility of this combined approach.
  • This pilot study demonstrates the reliability of size measurements in multimodality breast imaging.