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Published in: European Radiology 11/2021

Open Access 01-11-2021 | Magnetic Resonance Imaging | Oncology

Prospective comparison of the diagnostic accuracy of 18F-FDG PET/MRI, MRI, CT, and bone scintigraphy for the detection of bone metastases in the initial staging of primary breast cancer patients

Authors: Nils Martin Bruckmann, Julian Kirchner, Lale Umutlu, Wolfgang Peter Fendler, Robert Seifert, Ken Herrmann, Ann-Kathrin Bittner, Oliver Hoffmann, Svjetlana Mohrmann, Christina Antke, Lars Schimmöller, Marc Ingenwerth, Katharina Breuckmann, Andreas Stang, Christian Buchbender, Gerald Antoch, Lino M. Sawicki

Published in: European Radiology | Issue 11/2021

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Abstract

Objectives

To compare the diagnostic performance of [18F]FDG PET/MRI, MRI, CT, and bone scintigraphy for the detection of bone metastases in the initial staging of primary breast cancer patients.

Material and methods

A cohort of 154 therapy-naive patients with newly diagnosed, histopathologically proven breast cancer was enrolled in this study prospectively. All patients underwent a whole-body [18F]FDG PET/MRI, computed tomography (CT) scan, and a bone scintigraphy prior to therapy. All datasets were evaluated regarding the presence of bone metastases. McNemar χ2 test was performed to compare sensitivity and specificity between the modalities.

Results

Forty-one bone metastases were present in 7/154 patients (4.5%). Both [18F]FDG PET/MRI and MRI alone were able to detect all of the patients with histopathologically proven bone metastases (sensitivity 100%; specificity 100%) and did not miss any of the 41 malignant lesions (sensitivity 100%). CT detected 5/7 patients (sensitivity 71.4%; specificity 98.6%) and 23/41 lesions (sensitivity 56.1%). Bone scintigraphy detected only 2/7 patients (sensitivity 28.6%) and 15/41 lesions (sensitivity 36.6%). Furthermore, CT and scintigraphy led to false-positive findings of bone metastases in 2 patients and in 1 patient, respectively. The sensitivity of PET/MRI and MRI alone was significantly better compared with CT (p < 0.01, difference 43.9%) and bone scintigraphy (p < 0.01, difference 63.4%).

Conclusion

[18F]FDG PET/MRI and MRI are significantly better than CT or bone scintigraphy for the detection of bone metastases in patients with newly diagnosed breast cancer. Both CT and bone scintigraphy show a substantially limited sensitivity in detection of bone metastases.

Key Points

[18F]FDG PET/MRI and MRI alone are significantly superior to CT and bone scintigraphy for the detection of bone metastases in patients with newly diagnosed breast cancer.
Radiation-free whole-body MRI might serve as modality of choice in detection of bone metastases in breast cancer patients.
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Metadata
Title
Prospective comparison of the diagnostic accuracy of 18F-FDG PET/MRI, MRI, CT, and bone scintigraphy for the detection of bone metastases in the initial staging of primary breast cancer patients
Authors
Nils Martin Bruckmann
Julian Kirchner
Lale Umutlu
Wolfgang Peter Fendler
Robert Seifert
Ken Herrmann
Ann-Kathrin Bittner
Oliver Hoffmann
Svjetlana Mohrmann
Christina Antke
Lars Schimmöller
Marc Ingenwerth
Katharina Breuckmann
Andreas Stang
Christian Buchbender
Gerald Antoch
Lino M. Sawicki
Publication date
01-11-2021
Publisher
Springer Berlin Heidelberg
Published in
European Radiology / Issue 11/2021
Print ISSN: 0938-7994
Electronic ISSN: 1432-1084
DOI
https://doi.org/10.1007/s00330-021-07956-0

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