Radiotherapy response evaluation using FDG PET-CT-established and emerging applications.

Area of Science:

• Oncology
• Medical Imaging
• Radiotherapy

Background:

• Radiation therapy is a standard curative cancer treatment.
• Treatment failure occurs frequently, necessitating timely assessment for salvage options.
• Anatomical measurements alone may inaccurately reflect disease status post-radiotherapy.

Purpose of the Study:

• To highlight the critical need for accurate assessment of treatment response after radiation therapy.
• To introduce combined positron emission tomography (PET) and computed tomography (CT) as an advanced imaging technique.
• To demonstrate the utility of PET-CT in evaluating treatment success or failure.

Main Methods:

• Utilizing combined positron emission tomography (PET) and computed tomography (CT) imaging.
• Employing radioactive tracers to detect molecular characteristics of tissues.
• Leveraging the differences in molecular profiles between malignancies and surrounding tissues.

Main Results:

• PET-CT provides complementary anatomical and functional information.
• Enables accurate, non-invasive assessment of disease activity.
• Facilitates early recognition of treatment success or failure.

Conclusions:

• Combined PET-CT imaging improves the accuracy of treatment response assessment in cancer patients.
• This enhances clinical decision-making for salvage therapies.
• Optimizes patient survival and reduces treatment-related morbidity.