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Article Open Access

Effects of respiratory motion on volumetric and positional difference of GTV in lung cancer based on 3DCT and 4DCT scanning

  • Authors:
    • Shijiang Wang
    • Dongping Shang
    • Xue Meng
    • Xindong Sun
    • Yan Ma
    • Jinming Yu
  • View Affiliations / Copyright

    Affiliations: Department of Radiation Oncology, Shandong Cancer Hospital Affiliated to Shandong University, Jinan, Shandong 250117, P.R. China
    Copyright: © Wang et al. This is an open access article distributed under the terms of Creative Commons Attribution License.
  • Pages: 2388-2392
    |
    Published online on: December 18, 2018
       https://doi.org/10.3892/ol.2018.9844
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Abstract

Differences in gross target volume (GTV) and central point positions among moving lung cancer models constructed by CT scanning at different frequencies were compared, in order to explore the effect of different respiratory frequencies on the GTV constructions in moving lung tumors. Eight models in different shapes and sizes were established to stimulate lung tumors. The three-dimensional computed tomography (3DCT) and four-dimensional computed tomography (4DCT) scanning were performed at 10, 15 and 20 times/min in different models. Differences in GTV volumes and central point positions at different motion frequencies were compared by means of GTV3Ds (GTV3D-10, GTV3D-15, GTV3D-20) and IGTV4Ds (IGTV4D-10, IGTV4D-15, IGTV4D-20). Volumes of GTV3D-10, GTV3D-15, GTV3D-20 were 12.41±14.26, 10.38±11.18 and 12.50±15.23 cm3 respectively (P=0.687). Central point coordinates in the x-axis direction were -8.16±96.21, -8.57±96.08 and -8.56±95.73 respectively (P=0.968). Central point coordinates in the y-axis direction were 108.22±25.03, 110.41±22.47 and 109.04±24.24 (P=0.028). Central point coordinates in the z-axis direction were 65.19±13.68, 65.43±13.40 and 65.38±13.17 (P=0.902). The difference was significant in the y-axis direction (P=0.028). Volumes of IGTV4D-10, IGTV4D‑15, IGTV4D-20 were 17.78±19.42, 17.43±19.56 and 17.44±18.80 cm3 (P=0.417). Central point coordinates in the x-axis direction were -7.73±95.93, -7.86±95.56 and -7.92±95.14 (P=0.325). Central point coordinates in the y-axis direction were 109.41±24.54, 109.60±24.13 and 109.16±24.28 (P=0.525). Central point coordinates in the z-axis direction were 65.52±13.31, 65.59±13.39 and 65.51±13.34 (P=0.093). However, the central point position of GTV in the head and foot direction by 3DCT scanning was severely affected by the respiratory frequency.
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Copy and paste a formatted citation
Spandidos Publications style
Wang S, Shang D, Meng X, Sun X, Ma Y and Yu J: Effects of respiratory motion on volumetric and positional difference of GTV in lung cancer based on 3DCT and 4DCT scanning. Oncol Lett 17: 2388-2392, 2019.
APA
Wang, S., Shang, D., Meng, X., Sun, X., Ma, Y., & Yu, J. (2019). Effects of respiratory motion on volumetric and positional difference of GTV in lung cancer based on 3DCT and 4DCT scanning. Oncology Letters, 17, 2388-2392. https://doi.org/10.3892/ol.2018.9844
MLA
Wang, S., Shang, D., Meng, X., Sun, X., Ma, Y., Yu, J."Effects of respiratory motion on volumetric and positional difference of GTV in lung cancer based on 3DCT and 4DCT scanning". Oncology Letters 17.2 (2019): 2388-2392.
Chicago
Wang, S., Shang, D., Meng, X., Sun, X., Ma, Y., Yu, J."Effects of respiratory motion on volumetric and positional difference of GTV in lung cancer based on 3DCT and 4DCT scanning". Oncology Letters 17, no. 2 (2019): 2388-2392. https://doi.org/10.3892/ol.2018.9844
Copy and paste a formatted citation
x
Spandidos Publications style
Wang S, Shang D, Meng X, Sun X, Ma Y and Yu J: Effects of respiratory motion on volumetric and positional difference of GTV in lung cancer based on 3DCT and 4DCT scanning. Oncol Lett 17: 2388-2392, 2019.
APA
Wang, S., Shang, D., Meng, X., Sun, X., Ma, Y., & Yu, J. (2019). Effects of respiratory motion on volumetric and positional difference of GTV in lung cancer based on 3DCT and 4DCT scanning. Oncology Letters, 17, 2388-2392. https://doi.org/10.3892/ol.2018.9844
MLA
Wang, S., Shang, D., Meng, X., Sun, X., Ma, Y., Yu, J."Effects of respiratory motion on volumetric and positional difference of GTV in lung cancer based on 3DCT and 4DCT scanning". Oncology Letters 17.2 (2019): 2388-2392.
Chicago
Wang, S., Shang, D., Meng, X., Sun, X., Ma, Y., Yu, J."Effects of respiratory motion on volumetric and positional difference of GTV in lung cancer based on 3DCT and 4DCT scanning". Oncology Letters 17, no. 2 (2019): 2388-2392. https://doi.org/10.3892/ol.2018.9844
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