Can the Risk of Dysphagia in Head and Neck Radiation Therapy Be Predicted by an Automated Transit Fluence Monitoring Process During Treatment? A First Comparative Study of Patient Reported Quality of Life and the Fluence-Based Decision Support Metric

Overview

Journal Technol Cancer Res Treat

Specialties Biomedical Engineering
Oncology
Pharmacology

Date 2021 Jun 30

PMID 34190006

Citations 1

Authors

Seng Boh Lim

Nancy Lee

Kaveh Zakeri

Peter Greer

Todsaporn Fuangrod

Frederick Coffman

Laura Cervino

D Michael Lovelock

Affiliations

Soon will be listed here.

Abstract

Purpose/objective(s): The additional personnel and imaging procedures required for Adaptive Radiation Therapy (ART) pose a challenge for a broad implementation. We hypothesize that a change in transit fluence during the treatment course is correlated with the change of quality of life and thus can be used as a replanning trigger.

Materials/methods: Twenty-one head and neck cancer (HNC) patients filled out an MD Anderson Dysphagia Inventory (MDADI) questionnaire, before-and-after the radiotherapy treatment course. The transit fluence was measured by the Watchdog (WD) portal dosimetry system. The patients were monitored with daily WD and weekly CBCTs. The region of interest (ROI) of each patient was defined as the outer contour of the patient between approximate spine levels C1 to C4, essentially the neck and mandible inside the beam's eye view. The nth day integrated transit fluence change, Δϕ, and the volume change, ΔV, of the ROI of each patient was calculated from the corresponding WD and CBCT measurements. The correlation between MDADI scores and age, gender, planning mean dose to salivary glands <D>, weight change ΔW, ΔV, and Δϕ, were analyzed using the ranked-Pearson correlation.

Results: No statistically significant correlation was found for age, gender and ΔW. <D> was found to have clinically important correlation with functional MDADI (ρ = -0.39, = 0.081). ΔV was found to have statistically significant correlation of 0.44, 0.47 and 0.44 with global, physical and functional MDADI (-value < 0.05). Δϕ was found to have statistically significant ranked-correlation (-0.46, -0.46 and -0.45) with physical, functional and total MDADI (-value < 0.05).

Conclusion: A transit fluence based decision support metric (DSM) is statistically correlated with the dysphagia risk. It can not only be used as an early signal in assisting clinicians in the ART patient selection for replanning, but also lowers the resource barrier of ART implementation.

Citing Articles

Predictive Factors for Chemoradiation-Induced Oral Mucositis and Dysphagia in Head and Neck Cancer: A Scoping Review.

Nicol A, Ching J, Tam V, Liu K, Leung V, Cai J Cancers (Basel). 2023; 15(23).

PMID: 38067408 PMC: 10705154. DOI: 10.3390/cancers15235705.

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