AbstractID: 12035 Title: Clinical implementation of respiration motion correlated
imaging, treatment planning and delivery
Respiratory motion is a significant factor in determining a suitable planning target
volume (PTV) that surrounds the demonstrable gross tumor volume (GTV) in the
radiotherapy of mobile lesions. Historically, a “one-size-fits-all” margin derived from
population statistics has been employed to account for such motion. The advent of
respiratory phase correlation (4D) and multi-slice CT technology has enabled
patient-specific determination of both demonstrable tumor volume and its motion
from a single imaging study. Management of such additional information during
treatment planning and delivery however presents several challenges. Furthermore,
guidelines for establishing clinical treatment planning and delivery protocols based
on respiratory correlated imaging data differ from one institution to the other. The
purpose of this presentation is to educate the community on the different respiratory
correlated radiotherapy approaches currently available and compare the benefits and
pitfalls in each case. Special focus will be on treatment planning, dose calculation
and treatment delivery related issues.
After the course, the attendees should be able to:
1) Understand the different respiratory correlated treatment planning and
delivery approaches
2) Compare the benefits and pitfalls of each of the above approaches
3) Develop and establish respiratory correlated imaging, treatment planning and
delivery appropriate to the available equipment