ESTRO 2024 - Abstract Book

S1391

Clinical - Head & neck

ESTRO 2024

SPLICE-DWI. Furthermore, the ongoing assessment of geometric accuracy indicates a superior Dice score for SPLICE-DWI. While a potential ADC value discrepancy was observed in the Bland-Altman analyses, its clinical impact may be minimal if SPLICE-DWI can effectively replace SS-EPI-DWI.

Keywords: DWI, Distortion, Head and Neck

References:

1. Schakel T, Hoogduin JM, Terhaard CHJ, Philippens MEP. Technical Note: Diffusion-weighted MRI with minimal distortion in head-and-neck radiotherapy using a turbo spin echo acquisition method. Med Phys. Aug 2017;44(8):4188-4193. doi:10.1002/mp.12363

2. Schakel T, Hoogduin JM, Terhaard CH, Philippens ME. Diffusion weighted MRI in head-and-neck cancer: geometrical accuracy. Radiother Oncol. Dec 2013;109(3):394-7. doi:10.1016/j.radonc.2013.10.004

3. van Egmond SL, Stegeman I, Grolman W, Aarts MC. A Systematic Review of Non-Echo Planar Diffusion Weighted Magnetic Resonance Imaging for Detection of Primary and Postoperative Cholesteatoma. Otolaryngol Head Neck Surg. Feb 2016;154(2):233-40. doi:10.1177/01945998156130 4. Verhappen MH, Pouwels PJ, Ljumanovic R, et al. Diffusion-weighted MR imaging in head and neck cancer: comparison between half-fourier acquired single-shot turbo spin-echo and EPI techniques. AJNR Am J Neuroradiol. Aug 2012;33(7):1239-46. doi:10.3174/ajnr.A2949

5. Schick F. SPLICE: sub-second diffusion-sensitive MR imaging using a modified fast spin-echo acquisition mode. Magn Reson Med. Oct 1997;38(4):638-44. doi:10.1002/mrm.1910380418

2286

Digital Poster

Risk Factors and Individualized Nomogram for Unplanned ED Visit in Head & Neck Ca Patients During RT

Yu-Ming Wang 1 , Jen-Yu Cheng 1 , Ching-Nung Wu 2 , Tai-Jan Chiu 3 , Wei-Chih Chen 2 , Shao-Chun Wu 4 , Yao-Hsu Yang 5 , Eng Yen Huang 1 , Sheng-Dean Luo 2 1 Kaohsiung Chang Gung Memorial Hospital, Department of Radiation Oncology & Proton and Radiation Therapy Center, Kaohsiung, Taiwan. 2 Kaohsiung Chang Gung Memorial Hospital, Department of Otolaryngologyrtment of Radiation Oncology & Proton and Radiation Therapy Center, Kaohsiung, Taiwan. 3 Kaohsiung Chang Gung Memorial Hospital, Department of Hematology-Oncology, Kaohsiung, Taiwan. 4 Kaohsiung Chang Gung Memorial Hospital, Department of Anesthesiology, Kaohsiung, Taiwan. 5 Chiayi Chang Gung Memorial Hospital, Department of Traditional Chinese Medicine, Chiayi, Taiwan

Purpose/Objective: