NCT04310891

Markerless Image Guidance Using Intrafraction Kolovoltage X-ray Imaging for Lung Cancer Radiotherapy

Validation of Markerless Image Guidance Using Intrafraction Kolovoltage X-ray Imaging Using Implanted Fiducials: Phase I Observational Study of Lung Cancer Radiotherapy

• Status: Active Not Recruiting
• Phase: —
• Study type: Observational
• Enrollment: 5 (actual)
• Sponsor: Royal North Shore Hospital · Academic / Other
• Sex: All
• Age: 18 Years – 80 Years
• Healthy volunteers: —

Summary

In radiotherapy, tumour tracking allows us to ensure the radiation beam is accurately targeting the tumour while it moves in a complex and unpredictable way. Most tumour tracking techniques require the implantation of fiducial markers around the tumour. Markerless Tumour Tracking negates the need for implanted markers, enabling accurate and optimal cancer radiotherapy in a non-invasive way.

Detailed description

We will perform a phase I observational trial investigating the feasibility of the Markerless Tumour Tracking technology. Markerless Tumour Tracking will be integrated with existing treatment machines to provide real-time monitoring of tumour motion during treatment delivery. Eligible patients are implanted with fiducial markers, which act as the ground truth for evaluating the accuracy of Markerless Tumour Tracking. The patients will undergo the current standard of care radiotherapy, with the exception that kilovoltage x-ray images will be acquired continuously during treatment delivery and used to calculate online Markerless Tumour Tracking. Markerless Tumour Tracking determines the mean tumour position calculated over the most recent 15 seconds and displays shifts exceeding 3 mm. The trial will be a single-institution study recruiting only at RNSH Radiation Oncology Department. As this trial investigates feasibility, our focus will be on estimating the proportion of treatment time in which the Markerless Tumour Tracking is within acceptable limits.

Conditions

• Lung Cancer
• Markerless Image Guidance
• Intrafraction Kolovoltage X-ray Imaging

Interventions

Type	Name	Description
RADIATION	Markerless Tumour Tracking	Intrafraction Kolovoltage X-ray Imaging using Fiducials

Timeline

• Start date: 2020-12-04
• Primary completion: 2027-12-31
• Completion: 2027-12-31
• First posted: 2020-03-17
• Last updated: 2026-01-29

Locations

1 site across 1 country: Australia