Comparison of tumor delineation using dual energy computed tomography versus magnetic resonance imaging in head and neck cancer re-irradiation cases

Sweet Ping Ng, Carlos E. Cardenas, Hesham Elhalawani, Courtney Pollard, Baher Elgohari, Penny Fang, Mohamed Meheissen, Nandita Guha-Thakurta, Houda Bahig, Jason M. Johnson, Mona Kamal, Adam S. Garden, Jay P. Reddy, Shirley Y. Su, Renata Ferrarotto, Steven J. Frank, G. Brandon Gunn, Amy C. Moreno, David I. Rosenthal, Clifton D. FullerJack Phan

Research output: Contribution to journalArticlepeer-review

Abstract

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.

Original languageEnglish (US)
Pages (from-to)1-5
Number of pages5
JournalPhysics and Imaging in Radiation Oncology
Volume14
DOIs
StatePublished - Apr 2020

Keywords

  • Delineation
  • Dual energy computed tomography
  • Head and neck
  • Magnetic resonance imaging
  • Re-irradiation

ASJC Scopus subject areas

  • Radiation
  • Radiology Nuclear Medicine and imaging

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