[Imaging diagnostics in bone metastases]

Area of Science:

• Oncology
• Radiology
• Medical Imaging

Background:

• Bone metastases are frequent, leading to significant symptoms and poor prognosis.
• Early and accurate diagnosis of bone metastases is essential but challenging due to heterogeneity.
• Understanding the capabilities and limitations of various imaging modalities is critical.

Purpose of the Study:

• To review the diagnostic performance of different imaging modalities for bone metastases.
• To highlight the roles of MRI, PET/CT, and CT in diagnosis and management.
• To discuss emerging techniques like PET/MRI for bone metastasis detection.

Main Methods:

• Review of current literature on imaging techniques for bone metastases.
• Comparison of sensitivity and specificity of Magnetic Resonance Imaging (MRI) and Positron Emission Tomography-Computed Tomography (PET/CT).
• Evaluation of specific MRI sequences (gradient echo, diffusion-weighted) and CT for stability assessment.

Main Results:

• MRI and PET/CT demonstrate the highest sensitivity and specificity for detecting bone metastases.
• MRI is effective in differentiating osteoporotic from metastatic spinal fractures.
• CT is the preferred modality for assessing spinal fracture stability.

Conclusions:

• Advanced imaging techniques like MRI and PET/CT are vital for accurate bone metastasis diagnosis.
• The PET/MRI approach shows potential for improved diagnostic accuracy.
• Further large-scale clinical trials are needed to establish reliable imaging parameters for therapy response prediction.