What are the most common errors that can be made when performing prostate SBRT?

For those that are developing a Prostate CyberKnife Program:

1. Fiducial placement: The fiducials should be clearly separated on orthogonal X-ray images. See our paper for one strategy:

Lei S et al. (2011) Frontiers in Radiation Oncology

2. Treatment planning MRI: Make sure the MRI-CT fusion is accurate. Commonly I contour on the CT scan and just use the MRI in the challenging areas (prostate apex, bladder prostate interface, penile bulb, prostatic urethra and membranous urethra) to guide contouring.

3. Pre-treatment low fiber diet: It is a lot easier to track prostate motion if it is not moving a lot.

If you are developing a Prostate CyberKnife Program you are welcome to visit Georgetown. Just send me an Email in advance.

Good Luck

Sean

Thank you, What regimen/dose are you using ?

George