Calibr-Ì: Comparative Evaluation of Phantomless Calibration Methods to Quantify Bone Mineral Density for Opportunistic Analysis of CT Scans (Calibr-Ì)

June 9, 2025 updated by: Istituto Ortopedico Rizzoli

Comparative Evaluation of Phantomless Calibration Methods to Quantify Bone Mineral Density for Opportunistic Analysis of CT Scans

Osteoporosis is a systemic disease characterized by a reduction in bone mineral density (BMD) and qualitative alteration of the skeleton, resulting in increased bone fragility and fracture risk. The epidemiological impact of osteoporosis is extremely high. Proper diagnosis and clinical management of osteoporosis are critical to reducing the incidence of fragility fractures and preventing their complications. The diagnosis is generally confirmed by instrumental analysis of bone mineral density. The standard method is X-ray bone densitometry (DXA), which allows diagnosis based on criteria defined by the World Health Organization (WHO) by virtue of the T-score. DXA is a relatively quick and inexpensive examination with low exposure to ionizing radiation. However, this method has limitations in detecting fracture risk, and in addition, not all patients are properly referred for DXA services, which, among other things, require specific criteria to be reimbursed by the National Health System. Currently, computed tomography (CT) scanning is the most widely used three-dimensional diagnostic modality in clinical practice, and the number of investigations performed in high-income countries is continuously growing. Quantitative assessment of bone mineral density by CT is possible by proper calibration of the machine for the purpose of converting the CT numbers (or Hounsfield units) measured by the scanner into BMD units.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Recruiting

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Observational

Enrollment (Estimated)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
100

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Study Contact

The name and contact information for the person who can answer enrollment questions for a clinical study. Each location where the study is being conducted may also have a specific contact, who may be better able to answer those questions.

Study Contact Backup

Study Locations

  • Italy
    • Bo
      • Bologna, Bo, Italy, 40136
        • Recruiting
        • The Rizzoli Orthopaedic Institute
        • Contact:
  • New Zealand
      • Auckland, New Zealand
        • Not yet recruiting
        • Auckland Hospital - Greenlane Clinical Centre - National Women's Hospital
        • Contact:
          • Maria Pilar Aparisi Gómez, MD

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

  • Adult
  • Older Adult

Accepts Healthy Volunteers

No

Sampling Method

Non-Probability Sample

Study Population

The study will involve a population of patients undergoing CT scans including the lumbar spine at the Diagnostic and Interventional Radiology Unit of each participating center. In CT scans requiring the administration of contrast medium, only the non-contrast-enhanced images will be considered.

Description

Inclusion Criteria:

  • Both sexes.
  • All ethnicities.
  • Age equal or above 18 years.
  • Any clinical indication (no specific pathology is required) for a CT scan of the lumbosacral spine or abdomen in which the entire lumbar spine (L1 to L5), paravertebral muscles, abdominal aorta, and subcutaneous adipose tissue are visible.
  • Ability to give informed consent.

Exclusion Criteria:

  • General contraindications to CT examination, including pregnancy or body weight/size exceeding scanner limits.
  • Severe degenerative manifestations of the lumbosacral spine.
  • Severe scoliosis of the lumbosacral spine.
  • Surgical hardware that prevents adequate CT scanning.
  • Oncologic pathology in progress or in recent history.
  • Any other situation deemed incompatible with the study by the designated physician or investigator.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

Cohorts and Interventions

Group / Cohort

Group / Cohort

A group or subgroup of participants in an observational study that is assessed for biomedical or health outcomes.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Experimental
Patients that require a TC scan.
Other: Phantom
The patients will be simultaneously scanned with a QCT phantom

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
Comparison of different internal calibration methods
Time Frame: At baseline (Day 0)
Compare the different methods of internal or phantomless calibration described in the literature with synchronous and asynchronous calibration in a population of patients undergoing CT scans that include the lumbar spine to assess their feasibility.
At baseline (Day 0)

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
Definition of performance of internal calibration methods
Time Frame: At baseline (Day 0)
Define the performance of various internal or phantomless calibration methods for the purpose of identifying the most appropriate and reliable technique.
At baseline (Day 0)
Optimization of existing internal calibration methods
Time Frame: Through study completion, up to 2 years
Optimize existing internal calibration methods, and eventually define a new phantomless targeted calibration protocol based on the results of the study.
Through study completion, up to 2 years

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
Istituto Ortopedico Rizzoli

Collaborators

Collaborators

An organization other than the sponsor that provides support for a clinical study. This support may include activities related to funding, design, implementation, data analysis, or reporting.
Auckland Hospital - Greenlane Clinical Centre - National Women's Hospital

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
June 6, 2024

Primary Completion (Estimated)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
June 1, 2026

Study Completion (Estimated)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
June 1, 2026

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
June 6, 2024

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
June 6, 2024

First Posted (Actual)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
June 12, 2024

Study Record Updates

Last Update Posted (Actual)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
June 10, 2025

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
June 9, 2025

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
June 1, 2025

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • Calibr-I

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

UNDECIDED

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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