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Implantation and Monitoring by PET/CT of an Orthotopic Model of Human Pleural Mesothelioma in Athymic Mice
Published on: December 21, 2019
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A dedicated breast-PET/CT scanner: Evaluation of basic performance characteristics
Raymond R Raylman1, Will Van Kampen2, Alexander V Stolin1
1Center for Advanced Imaging, Department of Radiology, 1 Medical Center Dr., West Virginia University, Morgantown, WV, 26506, USA.
Medical Physics
|February 2, 2018
Summary
A new dedicated breast PET/CT scanner shows promising performance, comparable to existing systems. Its dual-modality imaging capability could enhance breast cancer detection and diagnosis.
Area of Science:
- Medical Imaging
- Radiology
- Oncology
Background:
- Advanced imaging techniques like PET and x-ray CT can improve breast cancer detection.
- Both PET and CT have limitations in detecting certain breast lesions.
- Combining PET and CT may offer enhanced diagnostic capabilities for breast imaging.
Purpose of the Study:
- To evaluate the fundamental performance of a novel dedicated breast-PET/CT scanner.
- To assess the capabilities of both PET and CT components individually.
- To demonstrate the combined imaging potential of the integrated system.
Main Methods:
- PET component performance evaluated using NEMA NU4-2008 protocols.
- CT component performance assessed with specialized phantoms.
- Radiation dose during CT imaging measured using kerma measurements.
- Combined system utility demonstrated via micro-hot-rod phantom imaging.
Main Results:
- PET component shows comparable performance to existing scanners, with 2.2 mm spatial resolution.
- PET peak NECR of 24.6 kcps, peak sensitivity of 1.36%, and scatter fraction of 27%.
- CT scanner achieves 1.1 lp/mm spatial resolution; radiation dose measured at 2.33 mGy (air) and 1.24 mGy (PMMA).
- Dual-modality imaging successfully visualized phantom structures, indicating system utility.
Conclusions:
- The new dedicated breast-PET/CT scanner exhibits good basic performance characteristics.
- System performance is comparable to current dedicated PET and CT scanners.
- The integrated system's potential lies in producing combined dual-modality images to improve breast disease detection.
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