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Lung CancernpUBDNCT03305978

Pulmonary Nodule Detection: Comparison of an Ultra Low Dose vs Standard Scan.

A study testing Ultra low dose chest CT and Low dose chest CT in people with Lung Cancer and Smoking, run by University Hospital, Grenoble at 1 site in France.

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

Lung cancer screening programs are still discussed in Europe today, and one of the concern is radiation due to iterative CT. The aim of this monocentric, prospective, non randomized study is to compare an ultra low dose chest CT (approaching a two views X ray) versus a standard low dose chest CT for ≥4mm lung nodules… Read more about this study

Who is it for?
Ages 18 years and older
Conditions the study is for
Lung Cancer, Smoking, Radiation Exposure
What is being tested?
Ultra low dose chest CT and Low dose chest CT
Type of treatment
Medical device
Could I receive a placebo?
No, everyone receives an active treatment
How many people
150 participants
Where
1 siteFrance
Study dates
26 Sep 2017to 10 Jul 2019
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

  • Patients referred for non enhanced chest CT for following indications :
  • lung nodule search or control
  • nodular abnormality on chest X ray
  • statement of COPD or emphysema
  • asbestos exposure
  • nodule localization before radio frequency ablation
Show all 10Show fewer
  • assessment of disease extent of an extra thoracic cancer (in case of iodinated intravenous contrast agent contraindication)
  • statement before extrathoracic transplantation (in case of iodinated intravenous contrast agent contraindication)
  • Affiliated with the french social security
  • Who signed consent

Who cannot join

  • Inability to lie down and still during the examination
  • Inability to hold breath more than 5 seconds
  • Pneumonia in the last 3 months
  • Body mass index more than 35kg/m²
  • exclusion period of another interventionnal study
  • referred for articles L1121-5 to L1121-8 of french public health code
  • Pregnant or breastfeeding women

Trial locations and contacts

1 site in 1 country.

France1 site
  • University Hospital Grenoble

    Grenoble, 38043

Other trials in France

About this study

Official title: Detection of Pulmonary Nodules: Comparison of Ultra-low-dose Chest CT (Approaching a Two Views Chest X-ray Radiation) and Standard Low Dose CT. A Monocentric, Prospective, Non-randomized, Comparative, Open-label Study With Blind Reading of the Judgment Criteria.

Lung cancer screening programs are still discussed in Europe today, and one of the concern is radiation due to iterative CT. The aim of this monocentric, prospective, non randomized study is to compare an ultra low dose chest CT (approaching a two views X ray) versus a standard low dose chest CT for ≥4mm lung nodules detection, and secondary for lung nodule characterization and smoking associated findings (emphysema, bronchial abnormalities and coronary calcifications).

Read the detailed description

An additional Ultra Low Dose CT, approaching 0.2mSv, will be performed in consenting patients referred for non enhanced chest CT in our Revolution CT scanner (GE Healthcare®).The dose delivered with the two acquisitions is still lower than the french diagnostic reference level. Standard CT is interpreted and a report is sent to the referent physician as usual. Then the two acquisitions are read over time by two independent radiologists, blinded over judgment criterias. In case of discordance, an other radiologist will arbitrate. We hope to validate our Ultra low dose chest CT protocol, which is more than 10 times less radiating than a standard low dose CT, as a sensitive tool to detect lung nodules.

Being tested
Ultra low dose chest CT, Low dose chest CT
Keywords
Ultra low dose chest CT, lung cancer screening
Medical subject headings
Lung Neoplasms, Smoking

What participants receive

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

  • Ultra low dose chest CTDevice

    Also called Revolution CT (GE Healthcare) 442507CN0, equiped with ASIR V

    An additional ultra low dose CT row is performed for every subject besides standard diagnostic low dose chest CT.

  • Low dose chest CTDevice

    Also called Revolution CT (GE Healthcare)

    standard diagnostic low dose chest CT

Study groups in NCT03305978
Study groupRoleWhat they receive
Ultra low dose chest CTExperimentalNot described
Receives: Device: Ultra low dose chest CT
Low dose chest CTActive comparatorNot described
Receives: Device: Low dose chest CT

What is being measured

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

  1. Ultra low dose CT lung nodule detection sensibility

    Detection rate (%) of ≥4mm lung nodules in ultra low dose chest CT versus standard low dose chest CT

    Measured: 22 months

Secondary outcomes (7)
  1. Ultra low dose CT diagnostic performances of lung nodule detection

    true positives, false positives, true negatives, false negatives, positive predictive value, negative predictive value, specificity, of ≥4mm lung nodules detection within ultra low dose chest CT versus standard low dose chest CT

    Measured: 22 months

  2. Concordance of ≥4mm lung nodules characteristics between ultra low dose and standard low dose chest CT

    comparison of size, density, type (true nodule or intrapulmonary ganglion) of ≥4mm lung nodule between ultra low dose and standard low dose chest CT

    Measured: 22 months

  3. Ultra low dose CT inter-observer reproducibility

    inter observer reproducibility for size, density and type of ≥4mm lung nodule detected in ultra low dose CT

    Measured: 22 months

  4. Influence of subjects characteristics, nodule location, and nodule size on detection between ultra low dose and standard low dose chest CT

    analysis of subjects characteristics (age, gender, body mass index), ≥4mm nodule location, and ≥4 mm nodule size on detection between ultra low dose and standard low dose chest CT

    Measured: 22 months

  5. Concordance of emphysema characteristics between ultra low dose and standard low dose chest CT

    comparison of emphysema detection, type (centrilobular, paraseptal, panlobular, bullous) and distribution between ultra low dose and standard low dose chest CT

    Measured: 22 months

  6. Concordance of coronary calcification detection and quantification between ultra low dose and standard low dose chest CT

    Comparison of Weston scores between ultra low dose and standard low dose chest CT

    Measured: 22 months

  7. Concordance of bronchial abnormalities evaluation between ultra low dose and standard low dose chest CT

    comparison of detection of bronchial thickening or dilatation between ultra low dose and standard low dose chest CT

    Measured: 22 months

Timeline

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

  1. First posted10 Oct 2017
  2. Study start26 Sep 2017
  3. Primary completion10 Jul 2019
  4. Study completion10 Jul 2019

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
Diagnosis
Allocation
Non-randomised
Intervention model
Sequential
Model description
Major Patient Addressed for Thoracic CT without Injection of Contrast
Masking
Single blind
Who is masked
Outcomes assessor
Enrolment
150 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT03305978
Sponsor's protocol ID
38RC17.132
Acronym
npUBD
Status last verified
Aug 2019
First submitted
26 Sep 2017
Last updated
21 Aug 2019
Results posted
No
Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
Individual data sharing
No

Publications

  • Ludwig M, Chipon E, Cohen J, Reymond E, Medici M, Cole A, Moreau Gaudry A, Ferretti G. Detection of pulmonary nodules: a clinical study protocol to compare ultra-low dose chest CT and standard low-dose CT using ASIR-V. BMJ Open. 2019 Aug 15;9(8):e025661. doi: 10.1136/bmjopen-2018-025661.

    PubMed 31420379

Questions about this trial

What is this clinical trial studying?

A study testing Ultra low dose chest CT and Low dose chest CT in people with Lung Cancer and Smoking, run by University Hospital, Grenoble at 1 site in France.

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 10 inclusion and 7 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 21 Aug 2019. 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 France. 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. 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?

Ultra low dose CT lung nodule detection sensibility (time frame: 22 months). It is what the study was designed to measure, not a finding.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT03305978, which also lists 1 linked publication.

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 21 Aug 2019.

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