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NCT04686500 · ClinicalTrials.gov registry record · NA

VisionRT-based Deep Inspiration Breath-hold (DIBH) Respiratory Motion Management Strategy, A Pilot Study for Thoracic and Abdominal Tumors

A NA study of Thoracic Cancer and Abdominal Cancer, sponsored by University of Texas Southwestern Medical Center.

Completed
Registry status
NA
Development phase
10
Enrollment target
1
Study location

NCT04686500: Completed NA study of Thoracic Cancer and Abdominal Cancer, sponsored by University of Texas Southwestern Medical Center.

NCT04686500 is a NA study of Thoracic Cancer and Abdominal Cancer that has completed, run by University of Texas Southwestern Medical Center. The registered enrollment target is 10 participants, below the 348-participant average among 15 other Thoracic Cancer trials with a reported enrollment target (97% lower). The trial reports 1 study location across 1 state. According to ClinicalTrials.gov, the official US trial registry.

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The verdict

NCT04686500, a NA study of Thoracic Cancer and Abdominal Cancer, has completed, sponsored by University of Texas Southwestern Medical Center.

COMPLETED
Registry status
NA
Development phase
10 participants
Enrollment target
1
Study location

Study Summary

A more recent competing technology for implementing the DIBH technique is real-time surface photogrammetry using the AlignRT system (Vision RT Ltd., London, UK). AlignRT system use non-ionization near infrared light to track patient surface motion. The system has one projector projecting near infrared optical pattern on patient surface. The optical pattern is imaged by optical cameras (two per pod) at \~25 Hz. The user selects a region-of-interest (ROI) on the surface and the software calculates and displays the real-time position in six degrees (3 translations and 3 rotations) in real-time. Once the patient has matched the pre-determined DIBH position (within threshold accuracy), the radiation beam is enabled to be turned on for treatment.

Primary Outcome

VRT-DIBH (VisionRT-based deep inspiration breath-hold) feasibility will be evaluated using descriptive statistics to explore the geometry accuracy and to characterize tumor motion/surface stability and repeatability during treatment. CT images of the treatment site, as well as kV projections and VRT surface images, will be taken and analyzed for this purpose. The trajectory data and kV projection data were analyzed in Matlab. In the kV images, the diaphragm was segmented and used for tracking of

Interventions

  • DEVICE Tidal volume measured by spirometer and DIBH surface from CT image

Study Locations (1)

Texas

  • UT Southwestern Medical Center - Dallas

Trial Details

FieldValue
Enrollment Target 10 participants
Start Date 2019-03-01
Est. Completion 2023-06-21
Phase NA

What the finished NCT04686500 record still lists

NCT04686500 is an interventional study that assigns participants to a tested intervention. The registry caps enrollment at 10 participants, a relatively small participant target, below the 348-participant average among 15 other Thoracic Cancer trials with a reported enrollment target (97% lower).

The record links to 2 conditions, with Thoracic Cancer appearing as the primary indexed condition, and to 1 intervention - of which Tidal volume measured by spirometer and DIBH surface from CT image is the first listed.

NCT04686500 reports a single indexed study location in Texas.

Frequently Asked Questions

What is clinical trial NCT04686500 about?

NCT04686500 is a clinical study titled "VisionRT-based Deep Inspiration Breath-hold (DIBH) Respiratory Motion Management Strategy, A Pilot Study for Thoracic and Abdominal Tumors". A more recent competing technology for implementing the DIBH technique is real-time surface photogrammetry using the AlignRT system (Vision RT Ltd., London, UK). AlignRT system use non-ionization near infrared light to track patient surface motion. The system has one projector projecting near infrar...

What is the current status of trial NCT04686500?

This trial is currently completed. It is a NA study. The enrollment target is 10 participants. The study started on 2019-03-01. Estimated completion is 2023-06-21.

What conditions does trial NCT04686500 study?

This clinical trial studies the following conditions: Thoracic Cancer, Abdominal Cancer.

What interventions are being tested in trial NCT04686500?

The interventions under investigation include: Tidal volume measured by spirometer and DIBH surface from CT image (DEVICE).

Who is sponsoring clinical trial NCT04686500?

This trial is sponsored by University of Texas Southwestern Medical Center, which has 837 total clinical trials registered on ClinicalTrials.gov.

Where is trial NCT04686500 being conducted?

This trial has 1 study location across Texas. Contact the study sites directly through ClinicalTrials.gov for enrollment availability.

Similar trials for Thoracic Cancer

Matched on the same primary condition, ranked to surface studies in the same phase first, then by recruiting status, no relevance scoring or editorial curation.

Where NCT04686500's enrollment target sits among peer trials

10 15th of 15 higher than 1 of 15 other Thoracic Cancer trials

participants (enrollment target), bucketed by value

Each bar is a band; taller bars hold more other Thoracic Cancer trials. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count and share, and where it sits relative to this entry.

Source ClinicalTrials.gov registry export · 2026-08-08

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Source: ClinicalTrials.gov NCT04686500, the US trial registry maintained by the National Library of Medicine. NCT04686500 (small enrollment · single site footprint · completed) retrieved and formatted by PlainTrial, see methodology.