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Respiratory Adaptive Computed Tomography: Feasibility Study on Real-Time Gated 4DCT for Lung Cancer Radiotherapy

NCT05030207 · Status: RECRUITING · Phase: NA · Type: INTERVENTIONAL · Enrollment: 30

Last updated 2026-05-19

No results posted yet for this study

Summary

This study does not involve a therapeutic intervention as standard radiation therapy treatment will be prescribed. This study involves one additional 4DCT scan (i.e. the Real-Time Gated 4DCT scan) acquired immediately before or following the conventional 4DCT scan. This will take place on the day of the patient's treatment simulation, as per the current standard of care. The scanning sequence (i.e. conventional first versus gated first) will be randomised.

The Real-Time Gated 4DCT is anticipated to take longer than the conventional 4DCT scan, due to its gated (beam-pause) nature. However, upper limits for timing will be implemented in the software, and the scan aborted for highly erratic breathing traces that would not benefit from a Real-Time Gated 4DCT scan.

Conditions

Interventions

DIAGNOSTIC_TEST

Real-time Gated 4DCT

Real-time gated four-dimensional cone beam computed tomography (4DCT) will be conducted at the simulation session. The Real-Time Gated 4DCT will be conducted while the patient moves through the rotating X-ray imager. This method detects and then pauses the CT beam during irregular breathing events.

DIAGNOSTIC_TEST

Conventional 4DCT

Four-dimensional computed tomography (4DCT), the standard of care for modern high-precision stereotactic ablative body radiotherapy (SABR), will be conducted at the simulation session. It will run continuously while the patient moves through the rotating X-ray imager.

Sponsors & Collaborators

  • Western Sydney Local Health District

    collaborator OTHER

  • University of Sydney

    lead OTHER

Principal Investigators

  • Ricky O'Brien, PhD · University of Sydney

Study Design

Allocation
NA
Purpose
OTHER
Masking
NONE
Model
SINGLE_GROUP

Eligibility

Min Age
18 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2024-05-15
Primary Completion
2026-12-31
Completion
2026-12-31

Countries

  • Australia

Study Locations

More Related Trials

Entities

Diseases

Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT05030207 on ClinicalTrials.gov