Magnetic resonance image guided brachytherapy.

Area of Science:

• Oncology
• Radiotherapy
• Medical Imaging

Background:

• Magnetic resonance image (MRI)-guided brachytherapy has seen significant growth over the past two decades.
• Clinical advancements in cervix cancer outcomes are associated with repeated MRI use for identifying residual tumor volumes during radiotherapy.
• This has shifted clinical practice towards individualized dose administration, with growing evidence of improved local control, survival, and reduced morbidity.

Purpose of the Study:

• To review the advancements and clinical impact of MRI-guided brachytherapy in gynecological and prostate cancers.
• To highlight the potential of MRI-guided brachytherapy for improved target delineation, dose prescription, and personalized treatment strategies.
• To emphasize the importance of multidisciplinary teams and training for the safe implementation of MRI-guided brachytherapy.

Main Methods:

• Review of clinical outcomes and practice changes associated with MRI-guided brachytherapy.
• Analysis of the role of repeated MRI in radiotherapy for cervix cancer.
• Evaluation of MRI-guided brachytherapy techniques for prostate cancer, including high-dose-rate and low-dose-rate applications.

Main Results:

• MRI-guided brachytherapy has led to improved clinical outcomes in cervix cancer, including better local control, overall survival, and reduced morbidity.
• For prostate cancer, MRI-guided brachytherapy enhances the accuracy of target and organs-at-risk delineation, with potential for improved dose prescription.
• MRI-guided prostate brachytherapy can identify subvolumes and dominant lesions, enabling dose administration tailored to differential recurrence risks.

Conclusions:

• MRI-guided brachytherapy represents an advanced approach involving sophisticated imaging, target concepts, and dose planning.
• The successful and safe dissemination of high-quality MRI-guided brachytherapy relies on establishing qualified multidisciplinary teams and robust training strategies.
• Continued development and implementation of MRI-guided brachytherapy promise further improvements in cancer treatment efficacy and patient care.