Unforeseen Computed Tomography Resimulation for Initial Radiation Planning: Associated Factors and Clinical Impact.
PURPOSE: Repeat computed tomography (CT) simulation is problematic because of additional expense of clinic resources, patient inconvenience, additional radiation exposure, and treatment delay. We investigated the factors and clinical impact of unplanned CT resimulations in our network.
METHODS AND MATERIALS: We used the billing records of 18,170 patients treated at 5 clinics. A total of 213 patients were resimulated before their first treatment. The disease site, location, use of 4-dimensional CT (4DCT), contrast, image fusion, and cause for resimulation were recorded. Odds ratios determined statistical significance.
RESULTS: Our total rate of resimulation was 1.2%. Anal/colorectal (
CONCLUSIONS: The most common sites for resimulation were anal/colorectal and head and neck, largely because of change in setup or changes in anatomy. The 4DCT technique correlated with higher resimulation rates. The resimulation rate was 1.2%, and median treatment delay was 7 days. Further studies are warranted to limit the rate of resimulation.
Published In/Presented At
Metzger, A., Renz, P., Hasan, S., Karlovits, S., Sohn, J., & Gresswell, S. (2019). Unforeseen Computed Tomography Resimulation for Initial Radiation Planning: Associated Factors and Clinical Impact. Advances in radiation oncology, 4(4), 716–721. https://doi.org/10.1016/j.adro.2019.06.002
Medicine and Health Sciences | Oncology
Department of Radiation Oncology