Related Experiment Video
Updated: Nov 29, 2025
Treatment of Liver Metastases Using an Internal Target Volume Method for Stereotactic Body Radiotherapy
Published on: May 8, 2018
External Beam Radiation Therapy for Liver Metastases
Paul B Romesser1, Brian P Neal2, Christopher H Crane3
1Department of Radiation Oncology, Memorial Sloan Kettering Cancer Center, 1275 York Avenue, Box #22, New York, NY 10065, USA; Early Drug Development Service, Department of Medicine, Memorial Sloan Kettering Cancer Center, 1275 York Avenue, Box #22, New York, NY 10065, USA.
Stereotactic ablative radiotherapy (SABR) is effective for small liver tumors. Larger tumors pose challenges due to proximity to organs at risk, requiring advanced techniques for safe treatment delivery.
Area of Science:
- Oncology
- Radiation Oncology
- Medical Physics
Background:
- Stereotactic ablative radiotherapy (SABR) is a standard treatment for small liver metastases.
- Advanced radiotherapy techniques like 3D-CRT and IMRT facilitate SABR for small liver volumes.
Purpose of the Study:
- To discuss the challenges and necessary adaptations for delivering SABR to larger liver tumors.
- To highlight techniques ensuring safe radiation delivery when treating larger liver lesions.
Main Methods:
- Utilizing modern conformal radiotherapy techniques (3D-CRT, IMRT).
- Implementing strategies to manage challenges associated with larger tumors and proximity to organs at risk.
- Employing image guidance and fractionated radiotherapy schedules.
Main Results:
- SABR is safely delivered to small liver metastases using conformal techniques.
- Challenges arise with larger tumors due to limited healthy liver tissue and proximity to radiosensitive organs (stomach, duodenum, intestines).
- Controlling respiratory motion, image guidance, and increased fractionation are key for safe SABR in complex cases.
Conclusions:
- SABR is a viable option for liver metastases, with technique adaptation crucial for larger tumors.
- Careful planning and advanced techniques are essential to minimize toxicity when treating larger liver tumors with SABR.
- Managing motion and utilizing image guidance are critical for safe and effective SABR delivery in challenging liver cases.
