A Novel Tapered Applicator for Vaginal Vault Brachytherapy

Status Completed

Clinical Trial Summary

This study will assess the comfort and fit of a novel applicator for endometrial cancer patients who are candidates for vaginal brachytherapy. This study is only assessing the applicator fitting. No patients in this study will be treated with the novel applicator.

Clinical Trial Description

In the treatment of endometrial cancer, adjuvant vaginal brachytherapy is typically performed to deliver radiation dose to the apex of the vagina with a fixed diameter vaginal applicator which extends the full length of the vagina. The largest cylinder which fits at the apex provides the best dosimetry. Smaller diameter cylinders may provide sub-optimal coverage of potential areas of disease. Due to pain or discomfort with a large cylinder, some women may be treated with a smaller diameter cylinder. A novel applicator, with a tapered design and two-step insertion was fabricated to improve the comfort, fit, and patient compliance of this procedure while maintaining optimum geometry and dosimetry at the dome. Our primary aim is to assess patient comfort with the new applicator. Patients will be fit with different applicators (standard of care and novel tapered vaginal applicator) and their comfort will be assessed with a visual analog scale-based survey, comparing the two. Aim #1: Assess if the 3.0cm diameter novel tapered applicator is more comfortable than the standard 3.0cm diameter applicator among patients fitted with a standard 3.0cm diameter applicator. Aim #2: Determine what percentage of patients who would otherwise be treated with a standard 2.6cm diameter vaginal cylinder can be up-sized to a 3.0cm diameter cylinder with the novel tapered applicator design. Aim #3: Assess in vivo dosimetry (optional for all patients). Patients who are prescribed vaginal brachytherapy undergo 3-dimensional cross-sectional imaging (i.e., MRI or CT) prior to treatment, as standard of care. This is done with the standard treatment applicator inserted to assess radiation dose distribution. In this optional aim, patients will undergo a slightly longer MRI, with additional MRI images performed with the novel tapered applicator in place to characterize and assess dosimetry, fit, contact with mucosal surfaces and presence of air gaps in comparison to a standard cylindrical applicator. ;

Study Design

Related Conditions & MeSH terms

Clinical Trial Details

NCT number	NCT04318340
Study type	Interventional
Source	Yale University
Contact
Status	Completed
Phase	N/A
Start date	July 16, 2020
Completion date	March 20, 2023

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Clinical trials are conducted in a series of steps, called phases - each phase is designed to answer a separate research question.

Phase 1: Researchers test a new drug or treatment in a small group of people for the first time to evaluate its safety, determine a safe dosage range, and identify side effects.
Phase 2: The drug or treatment is given to a larger group of people to see if it is effective and to further evaluate its safety.
Phase 3: The drug or treatment is given to large groups of people to confirm its effectiveness, monitor side effects, compare it to commonly used treatments, and collect information that will allow the drug or treatment to be used safely.
Phase 4: Studies are done after the drug or treatment has been marketed to gather information on the drug's effect in various populations and any side effects associated with long-term use.