Comparison of tumor delineation using dual energy computed tomography versus magnetic resonance imaging in head and neck cancer re-irradiation cases.
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Date
2020-04Source Title
Physics and Imaging in Radiation OncologyPublisher
Elsevier BVAffiliation
Medicine Dentistry & Health SciencesMetadata
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Ng, S. P., Cardenas, C. E., Elhalawani, H., Pollard, C., Elgohari, B., Fang, P., Meheissen, M., Guha-Thakurta, N., Bahig, H., Johnson, J. M., Kamal, M., Garden, A. S., Reddy, J. P., Su, S. Y., Ferrarotto, R., Frank, S. J., Brandon Gunn, G., Moreno, A. C., Rosenthal, D. I. ,... Phan, J. (2020). Comparison of tumor delineation using dual energy computed tomography versus magnetic resonance imaging in head and neck cancer re-irradiation cases.. Phys Imaging Radiat Oncol, 14, pp.1-5. https://doi.org/10.1016/j.phro.2020.04.001.Access Status
Open AccessOpen Access at PMC
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7807720Abstract
In treatment planning, multiple imaging modalities can be employed to improve the accuracy of tumor delineation but this can be costly. This study aimed to compare the interobserver consistency of using dual energy computed tomography (DECT) versus magnetic resonance imaging (MRI) for delineating tumors in the head and neck cancer (HNC) re-irradiation scenario. Twenty-three patients with recurrent HNC and had planning DECT and MRI were identified. Contoured tumor volumes by seven radiation oncologists were compared. Overall, T1c MRI performed the best with median DSC of 0.58 (0-0.91) for T1c. T1c MRI provided higher interobserver agreement for skull base sites and 60 kV DECT provided higher interobserver agreement for non-skull base sites.
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