ESTRO 2024 - Abstract Book

S849

Clinical - CNS

ESTRO 2024

A Mann-Kendall trend test was performed to assess the trend of the GI with respect to the size of the targets. The results revealed significant decreasing trends (p < 0.05) in the GI as the size of the targets increased for all three techniques (figure 2).

Figure 2 Gradient Index vs Target Volume for the three techniques

Conclusion:

The sphericity of the target serves as an informative parameter for predicting the CI in cone-based SRS before planning. It is noteworthy that the gradient index is influenced by the size of the target, rather than its sphericity.

Keywords: Conformity Index, Gradient Index

References:

1.

PHYSICS CONTRIBUTION| VOLUME 106, ISSUE 3, P604-611, MARCH 01, 2020

Dose Gradient Index for Stereotactic Radiosurgery/Radiation Therapy

Tatsiana A. Reynolds, PhD

Andrew R. Jensen, MS

Ellen E. Bellairs, MD

Mustafa Ozer, MS