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Cancer of LungNCT04717804

4D CBCT and Intrafractional Imaging for the Determination of the Most Representative 4D Simulation Planning Technique for Lung SBRT Technique Patients

A study testing AIP CT and FB (Free-Breathing) CT in people with Cancer of Lung, run by The University of Texas Health Science Center at San Antonio at 1 site in United States.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
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Trial summary

The researchers plan to investigate two ways of visualizing and planning to account for the respiratory motion which takes place while treating lung tumors with radiation therapy. Read more about this study

Who is it for?
Ages 18 years and older
Conditions the study is for
Cancer of Lung
What is being tested?
AIP CT and FB (Free-Breathing) CT
Could I receive a placebo?
Yes, some participants may receive a placebo
How many people
12 participants
Where
1 siteUnited States
Study dates
17 Aug 2021to 14 Nov 2023
Phase
Interventional
Are there results?
None posted in the registry

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 18 years and older
  • All sexes
  • No healthy volunteers
  • Adult, Older adult

Who may be able to join

  • Age ≥ 18 years.
  • Ability to provide informed written consent in either English or Spanish.
  • Patients with cancer or presumed cancer involving the lung (primary or secondary) planned to undergo lung SBRT technique or IMRT technique with an SBRT setup in 10 or fewer fractions.

Who cannot join

  • Current pregnancy, as this is a contraindication to receiving radiation therapy.
  • Patients to be treated to multiple targets concurrently.
  • Any condition or history as evidenced by patient record and/or self-report that, in the opinion of the investigator, would interfere with adherence to the prescribed pattern of radiation therapy.
  • Poor lung function, as judged by the prescribing radiation oncologist, sufficiently limiting to make the patient not a candidate for 4D imaging (for example major differences between the 4D and free-breathing CT scan).

Trial locations and contacts

1 site in 1 country.

United States1 site
  • Mays Cancer Center, UT Health San Antonio

    San Antonio, Texas, 78229

Other trials in United States

About this study

Official title: 4D(Dimensional) CBCT (Cone-beam Computed Tomography) and Intrafractional Imaging for the Determination of the Most Representative 4D Simulation Planning Technique for Lung SBRT (Stereotactic Body Radiation Therapy) Technique Patients

The researchers plan to investigate two ways of visualizing and planning to account for the respiratory motion which takes place while treating lung tumors with radiation therapy. The researchers will determine if a traditional snapshot (free-breathing) CT or a longer-lasting CT encompassing the breathing cycle better matches a patient's breathing during treatment.

Read the detailed description

As part of this study the patient will receive the standard of care treatment of Stereotactic Body Radiation Therapy (SBRT) approach for treatment of lung cancer. The study will compare whether the quick snapshot or longer-last image is more representative of breathing motion. The standard of care way to verify breathing is to use the Cone Beam Computerized Tomography (CBCT) before each treatment. For this study the researchers will use two other standard of care ways to verify breathing motion during treatment only during the first and last radiation treatment sessions. During the other radiation treatment sessions the CBCT alone will be used. These two other methods are FDA approved, but not routinely being used at the Mays Cancer Center. One method is called 4D-CBCT and is conducted immediately prior to treatment. This will create an image taken over a longer time of the patient's lungs which will be compared with the images from the CT Simulation used to plan the radiation. The other way is called Intrafractional CBCT and is imaging that is done at the same time as the radiation treatment delivery. This will show the researchers how the tumor is moving while the radiation treatment is taking place. These two methods require a longer treatment time, approximately 10 minutes during the first and last treatments.

Conditions
Cancer of Lung
Being tested
AIP CT, FB (Free-Breathing) CT
Medical subject headings
Lung Neoplasms

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • AIP CTOther

    Also called CT Imaging

    An image taken over a longer time of the lungs (average intensity projection of 4DCT) will be compared with breathing during treatment.

  • FB (Free-Breathing) CTOther

    Also called CT Imaging

    A snapshot of breathing (free-breathing traditional CT) will be used to compare with breathing during treatment.

Study groups in NCT04717804
Study groupRoleWhat they receive
AIP (Average Intensity Projection) CT (Computed Tomagraphy)Active comparatorAn image taken over a longer time of the lungs (average intensity projection of 4DCT) will be compared with breathing during treatment.
Receives: Other: AIP CT
FB (Free-Breathing) CTPlacebo comparatorA snapshot of breathing (free-breathing traditional CT) will be used to compare with breathing during treatment.
Receives: Other: FB (Free-Breathing) CT

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. To investigate radiation therapy treatment tumor localization accuracy by determining whether the FB or AIP images is more representative of the target at treatment.

    This will be quantitively determined by quantifying the agreement between the two CT scans using the Dice coefficient (DSC) as a metric for localization accuracy.

    Measured: 2 weeks

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted22 Jan 2021
  2. Study start17 Aug 2021
  3. Primary completion14 Nov 2023
  4. Study completion14 Nov 2023

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase N/A
Primary purpose
Screening
Allocation
Randomised
Intervention model
Parallel groups
Masking
None (open label)
Enrolment
12 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT04717804
Sponsor's protocol ID
CTMS# 20-0107
Status last verified
Jun 2024
First submitted
11 Jan 2021
Last updated
27 Jun 2024
Results posted
No
Data monitoring committee
Yes
FDA-regulated drug
No
FDA-regulated device
No
Individual data sharing
No

Questions about this trial

What is this clinical trial studying?

A study testing AIP CT and FB (Free-Breathing) CT in people with Cancer of Lung, run by The University of Texas Health Science Center at San Antonio at 1 site in United States.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 3 inclusion and 4 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: finished, as of the sponsor's last update on 27 Jun 2024. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 1 site in United States. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. Some participants in this study may receive a placebo. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

Are results available for this study?

The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

To investigate radiation therapy treatment tumor localization accuracy by determining whether the FB or AIP images is more representative of the target at treatment. (time frame: 2 weeks). It is what the study was designed to measure, not a finding.

Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 27 Jun 2024.

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