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Author profile
George X. Ding, PhD
Vanderbilt University Medical Center
Comparison of AAA and Acuros Xb for Small‑Field Lung SBRT Dosimetry
To evaluate the accuracy of the Analytical Anisotropic Algorithm (AAA) and Acuros XB (AXB) implemented in the Eclipse treatment planning system for small-field dosimetry in low-density lung, with emphasis on their performance in lung stereotactic body radiati...
Poster Program · Professional
Effect of Focal Spot Size on the Beam Output between Circular and Square Small Fields
The source size (focal spot) of a photon beam from linacs is known to have effects on the output for small-field dosimetry. This study aims to determine quantitatively the sensitivity of beam field output factors (FOF) as a function of field sizes between cir...
Poster Program · Therapy Physics
State of Lung SBRT across Treatment Planning Systems: Implications for Small‑Field Dosimetry
Lung stereotactic body radiotherapy (SBRT) is now standard of care for oligometastatic and small pulmonary lesions, where very small radiation fields are used. Although inhomogeneity correction algorithms have been well validated for larger fields, limited da...
Poster Program · Therapy Physics
A Paradigm Shift: Monte Carlo Could Play a Primary Role While Measurement Serves a Validation Purpose In Small Field Dosimetry
Small field dosimetry has been challenging without reasonable data. However, we've reached the point that the Monte Carlo approach can play a primary role in providing comprehensive beam data (including field output factors(FOFs), %dd and dose profiles, etc.)...
Proffered Program · Therapy Physics