Application of computed tomography and magnetic resonance imaging fusion images for delineating gross tumor volume in three-dimensional conformal radiotherapy of nasopharyngeal carcinoma

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CHEN H.; HUANG H.; LI G.; HUANG D.; CHEN S.; WANG Z.

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Journal: International Journal of Radiation Research Year:2017 | Volume:15 | Issue:3 Page(s): 251-257

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Title

Application of computed tomography and magnetic resonance imaging fusion images for delineating gross tumor volume in three-dimensional conformal radiotherapy of nasopharyngeal carcinoma

Author(s)

Keywords

Nasophanrygeal carcinoma

image fusion

three-dimensional conformal radiation therapy

Abstract

Background: To evaluate computed tomography (CT) and magne c resonance imaging (MRI) fusion images for delinea ng gross tumor volume (GTV) in three-dimensional conformal radiotherapy (3D-CRT) of Nasophanrygeal carcinoma (NPC), and compare treatment outcomes between CT-and CT+MRI-based targets. Materials and Methods: A total of 120 NPC pa ents treated with 3D-CRT were included, in which, 60 each were treated with CT-based and 60 with CT+MRI fusion targets. We explored the clinical applica on of CT+MRI fusion targets and compared the 1-, 3-, and 5-year survival and relapse rates between both targets. Results: The clinical characteris cs and treatment factors were well balanced. The differences in public volume using CT alone in the CT+MRI (Group A) and the CT arm (Group B) were not significant (33. 6± 2. 18 vs. 34. 3± 2. 98, P > 0. 05). The public volumes of GTV in the two arms were 49. 48± 2. 46 cm3 and 33. 6± 2. 18 cm3 respec vely (P < 0. 05). CT+MR fusion images did not influence the one-, three-, and 5-year survival rates (100% vs. 98. 3%, 85. 0% vs. 81. 2%, and 73. 3% vs. 68. 3%, respec vely). The three-and 5-year out-of-field progression was reduced in the CT+MRI arm. However, only the difference in 3-year out-of-field relapse rate was significant (3. 3% vs. 13. 3%; P < 0. 05). The incidence of acute toxici es was similar between groups. Conclusion: The variability in GTV delinea on in NPC was ascribed to intermodality and not interobserver variability. CT+MR fusion images likely reduced the 3-year out-of-field relapse rate.

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APA: Copy

CHEN, H., HUANG, H., LI, G., HUANG, D., CHEN, S., & WANG, Z.. (2017). Application of computed tomography and magnetic resonance imaging fusion images for delineating gross tumor volume in three-dimensional conformal radiotherapy of nasopharyngeal carcinoma. INTERNATIONAL JOURNAL OF RADIATION RESEARCH, 15(3), 251-257. SID. https://sid.ir/paper/286882/en

Vancouver: Copy

CHEN H., HUANG H., LI G., HUANG D., CHEN S., WANG Z.. Application of computed tomography and magnetic resonance imaging fusion images for delineating gross tumor volume in three-dimensional conformal radiotherapy of nasopharyngeal carcinoma. INTERNATIONAL JOURNAL OF RADIATION RESEARCH[Internet]. 2017;15(3):251-257. Available from: https://sid.ir/paper/286882/en

IEEE: Copy

H. CHEN, H. HUANG, G. LI, D. HUANG, S. CHEN, and Z. WANG, “Application of computed tomography and magnetic resonance imaging fusion images for delineating gross tumor volume in three-dimensional conformal radiotherapy of nasopharyngeal carcinoma,” INTERNATIONAL JOURNAL OF RADIATION RESEARCH, vol. 15, no. 3, pp. 251–257, 2017, [Online]. Available: https://sid.ir/paper/286882/en

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