Molecular Imaging in Photon Radiotherapy

Area of Science:

• Oncology
• Radiology
• Medical Imaging

Background:

• Cancer treatment increasingly relies on an interdisciplinary approach.
• Radiation therapy (RT) is a cornerstone of cancer care, offering curative and palliative options.
• Technological advancements, including intensity-modulated RT (IMRT), have significantly improved RT precision.

Purpose of the Study:

• To provide an overview of molecular imaging applications in photon RT.
• To highlight the role of advanced imaging in improving RT planning and monitoring.
• To demonstrate these applications using examples from various cancers.

Main Methods:

• Review of molecular imaging techniques, including PET and multiparametric MRI.
• Focus on photon RT, the most common RT modality.
• Case examples from brain tumors, head and neck, lung, esophageal, prostate, and uterine cancers.

Main Results:

• Molecular imaging offers enhanced precision for defining tumor spread (GTV and CTV) compared to traditional methods.
• PET and multiparametric MRI improve the accuracy of RT planning by providing detailed tumor information.
• These techniques aid in both RT planning and treatment monitoring.

Conclusions:

• Molecular imaging is crucial for optimizing radiation therapy precision.
• Accurate tumor delineation through advanced imaging is essential for effective cancer treatment.
• The integration of molecular imaging into RT planning promises improved patient outcomes across various cancer types.