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Clinical Trial Summary

Optimization of radiotherapy to reduce xerostomia is difficult, because many gland locations cannot be seen with current imaging modalities and biological dose-effect are currently insufficiently understood. PSMA PET is a new diagnostic instrument which can visualize the presence of vital acinar cells in salivary gland locations throughout the head and neck, with a sensitive and quantitative signal. A reduction of PSMA accumulation in salivary glands is thought to correlate with loss of vital acinar cells. The PET images can be correlated with radiotherapy dose distributions in gland-based or voxel-based evaluations. This makes PSMA PET a suitable instrument to derive the radiobiological dose-effect relations that are required to develop better and gland-specific dose constraints for radiotherapy. The results of this study can contribute to lower toxicity and better quality of life in patients treated with high-dose radiotherapy in the head and neck.


Clinical Trial Description

Primary objective of this prospective observational study is to determine the gland-based dose-effect relation between conventionally fractionated radiotherapy (RT) and long-term loss of acinar cells, per salivary gland type. The study population consists of a maximum of 20 patients with HNSCC referred for high-dose (CC)RT. There is no therapeutic intervention. Diagnostic intervention is PSMA PET/CT. ;


Study Design


Related Conditions & MeSH terms


NCT number NCT03367780
Study type Observational
Source The Netherlands Cancer Institute
Contact
Status Completed
Phase
Start date November 21, 2017
Completion date July 15, 2021

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