头颈部癌再程放疗病例中使用双能计算机断层扫描与磁共振成像进行肿瘤勾画的比较。
Comparison of tumor delineation using dual energy computed tomography versus magnetic resonance imaging in head and neck cancer re-irradiation cases.
作者信息
Ng Sweet Ping, Cardenas Carlos E, Elhalawani Hesham, Pollard Courtney, Elgohari Baher, Fang Penny, Meheissen Mohamed, Guha-Thakurta Nandita, Bahig Houda, Johnson Jason M, Kamal Mona, Garden Adam S, Reddy Jay P, Su Shirley Y, Ferrarotto Renata, Frank Steven J, Brandon Gunn G, Moreno Amy C, Rosenthal David I, Fuller Clifton D, Phan Jack
机构信息
Department of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA.
Department of Radiation Oncology, Peter MacCallum Cancer Centre, Melbourne, Australia.
出版信息
Phys Imaging Radiat Oncol. 2020 Apr 29;14:1-5. doi: 10.1016/j.phro.2020.04.001. eCollection 2020 Apr.
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.
在治疗计划中，可以采用多种成像方式来提高肿瘤勾画的准确性，但这可能成本高昂。本研究旨在比较在头颈部癌（HNC）再照射情况下，使用双能计算机断层扫描（DECT）与磁共振成像（MRI）进行肿瘤勾画时观察者间的一致性。确定了23例复发性HNC患者，他们有计划的DECT和MRI检查。比较了7名放射肿瘤学家勾画的肿瘤体积。总体而言，T1c MRI表现最佳，T1c的中位数DSC为0.58（0 - 0.91）。T1c MRI在颅底部位提供了更高的观察者间一致性，而60 kV DECT在非颅底部位提供了更高的观察者间一致性。
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