Early changes of volume and spatial location in target and normal tissues caused by IMRT for cervical cancer

Tumori
Jianwu ChenQixin Li

Abstract

To investigate the early changes of volume and spatial location in target and normal tissues caused by intensity-modulated radiotherapy (IMRT) for cervical cancer. Forty patients with cervical cancer were included in this study and treated by IMRT. Computed tomography (CT) was performed before radiotherapy and when the patient had received 27 Gy in 15 fractions. After image registration, the volume of interest (VOI) for the targets and organs at risk was delineated by clinicians on the CT images. Changes of volume, spatial location and Dice similarity were calculated for all VOIs. There were significant changes in gross tumor volume (GTV) in the primary tumor (GTV-T) with t = 8.304 (p<0.01) and visible pelvic lymph nodes (GTV-N) with t = 4.996 (p<0.01) caused by IMRT. The mean volume differences for GTV-T and GTV-N were 38.64% ± 19.50% (range 3.16%-86.49%) and 42.49% ± 25.68% (range 2.79%-87.42%), respectively. Among the organs at risk, the bladder had the greatest volume change with 55.13% ± 33.40% (range 3.25%-116.01%). The Dice similarity for GTV-T and GTV-N was 0.50 ± 0.18 (range 0.10-0.85) and 0.31 ± 0.20 (range 0.00-0.71), respectively. The rectum had the least Dice similarity among the normal tissues, with a mean v...Continue Reading

References

Jun 6, 2000·International Journal of Radiation Oncology, Biology, Physics·G O De MeerleerW De Neve
Apr 17, 2002·International Journal of Radiation Oncology, Biology, Physics·Arno J MundtJohn C Roeske
Aug 17, 2010·International Journal of Radiation Oncology, Biology, Physics·Michael D HasselleLoren K Mell
Nov 3, 2010·Current Oncology Reports·Ann H Klopp, Patricia J Eifel
Nov 27, 2010·International Journal of Radiation Oncology, Biology, Physics·Neelam TyagiLoren K Mell
Feb 8, 2011·CA: a Cancer Journal for Clinicians·Ahmedin JemalDavid Forman
Feb 26, 2014·Clinical Oncology : a Journal of the Royal College of Radiologists·R JadonJ Staffurth
May 4, 2015·Cancer radiothérapie : journal de la Société française de radiothérapie oncologique·P FenogliettoD Azria

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