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RecruitingNCT06745791CleverBonesUpdated Oct 7, 2026

Clinical Validation of BoneMRI in the Spine

An observational study in Bone Diseases, Image and Medical Device, sponsored by MRIguidance B.V.. Recruiting at 10 sites in 4 countries. Open to participants aged 12 Years and older. Per ClinicalTrials.gov, last updated 2026-10-07.

Sponsored by MRIguidance B.V. · Observational

From the registry’s dates

  • Started Aug 2021; still recruiting 5 years 2 months later.
Updated Oct 7, 2026Site recruiting status changedGo to Updates ↓
Study type
Observational
Model
Other
Time perspective
Prospective
Enrollment
450
Ages
12 Years and older
Sex
All
01

Study summary

BoneMRI is a quantitative 3D MRI technique that has been developed recently by MRIGuidance BV©, which is based on a multiple gradient-echo sequence and a machine learning processing pipeline. The BoneMRI technology is capable of generating CT-like, quantitative radiodensity bone MRI images to visualize cortical and trabecular bone, allowing to assess bone structure and morphology, in addition to regular clinical MRI images. The use of BoneMRI has been investigated and clinically validated in multiple musculoskeletal studies involving the cervical spine, hip and sacro-iliac joint. In order to clinically use BoneMRI in the entire spine, the BoneMRI technology needs to be validated in that area as well, focussing on geometrical and voxelwise accuracy of the radiodensity contrast to assure accurate visualization of the osseous structures. As robustness against expected data variability between hospitals is crucial for successful machine learning algorithms, multiple MR field strengths and scanner types from different manufacturers will be included in this study. If successful, BoneMRI will facilitate a better, easier and cheaper workflow by enabling diagnosis, treatment planning and surgical navigation using a single radiological examination, without the potential hazards of ionizing radiation.

Read the detailed description

Rationale: BoneMRI is a quantitative 3D MRI technique that has been developed recently by MRIGuidance BV©, which is based on a multiple gradient-echo sequence and a machine learning processing pipeline. The BoneMRI technology is capable of generating CT-like, quantitative radiodensity bone MRI images to visualize cortical and trabecular bone, allowing to assess bone structure and morphology, in addition to regular clinical MRI images. The use of BoneMRI has been investigated and clinically validated in multiple musculoskeletal studies involving the cervical spine, hip and sacro-iliac joint. In order to clinically use BoneMRI in the entire spine, the BoneMRI technology needs to be validated in that area as well, focussing on geometrical and voxelwise accuracy of the radiodensity contrast to assure accurate visualization of the osseous structures. As robustness against expected data variability between hospitals is crucial for successful machine learning algorithms, multiple MR field strengths and scanner types from different manufacturers will be included in this study. If successful, BoneMRI will facilitate a better, easier and cheaper workflow by enabling diagnosis, treatment planning and surgical navigation using a single radiological examination, without the potential hazards of ionizing radiation.

Primary objective: The primary objective of this study is to investigate the performance of BoneMRI in terms of geometrical accurate visualization of the spinal osseous structures by radiodensity reconstruction when exposed to clinically relevant data variability.

Study design: This study is a prospective multi-center clinical validation study, following a comparative design.

Study population: Subjects referred to the radiology department for an MRI and CT scan of the spine having symptoms related to a spine disorder with suspected underlying involvement of osseous structures, will be asked to participate in this study.

Duration of the study: Expectation is that it will take approximately 36-48 months to include 50 patients per center.

Main study parameters/endpoints: Geometric accuracy in terms of visualization of the 3D osseous morphology of the spinal column.

Nature and extent of the burden and risk associated with participation, benefit and group relatedness: The patient does not benefit from participating in this study and will receive routine care, which includes undergoing an MRI and CT scan. For research purposes an additional MRI sequence will be obtained for each patient. The CT scan is part of routine clinical care, so patients do not receive additional ionizing radiation compared to standard care. The subjects will in no way be exposed to BoneMRI as BoneMRI will not be installed at the investigation site and will not be part of the clinical workflow, nor the BoneMRI reconstructions will be part of the patient's file or decision making process of the healthcare professional. Therefore, there are no additional risks for the patients when participating in this study. This study may contribute to lower radiation doses in future patients when concluded that BoneMRI accurately visualizes the 3D morphology of the spinal osseous structures. This would render an additional conventional CT scan redundant.

02

Conditions studied

  • Bone Diseases
  • Image
  • Medical Device

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Keywords

  • medical device
  • software
  • synthetic CT
  • MRI sequence
03

In context

Bone Diseases

177 studies on the registry are indexed under Bone Diseases; 38 are open to participants now.

This study's planned enrollment of 450 is above the median of 150 across 55 observational studies indexed under Bone Diseases.

Browse Bone Diseases studies →

Lead sponsor

This is the only study on the registry with MRIguidance B.V. as lead sponsor.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
12 Years and older
Sexes eligible
All
Accepts healthy volunteers
No
Sampling method
Non-probability sample

Study population

Subjects referred to the radiology department for an MRI and CT scan of the spine having symptoms related to a spine disorder with suspected underlying involvement of osseous structures, will be asked to participate in this study.

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • ≥ 12 years old
  • Indication for diagnostic MRI of the spine
  • Indication for diagnostic CT of the spine
  • Eligible for MRI
  • Eligible for CT
  • Written

Exclusion criteria

Exclusion Criteria:

  • Pregnancy
  • History of (psychiatric) disorder which causes the patient to be incompetent to make a thought-out decision
  • claustrophobia
  • >3 months between CT and MRI scan
Terms in these criteria, in plain language(1)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Informed consent

Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.

You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.

05

Study design

Observational model
Other
Time perspective
Prospective
Enrollment
450 participants (estimated)
Patient registry
No

Groups and cohorts

  • Spinal MRI and CT

    Subjects referred to the radiology department for an MRI and CT scan of the spine having symptoms related to a spine disorder with suspected underlying involvement of osseous structures, will be asked to participate in this study.

    Device: BoneMRI

Interventions

  • DeviceBoneMRI

    BoneMRI is a quantitative 3D MRI technique,capable of generating CT-like, quantitative radiodensity bone MRI images to visualize cortical and trabecular bone, allowing to assess bone structure and morphology, in addition to regular clinical MRI images.

06

What researchers measure

Primary outcomes

  1. Accuracy of the BoneMRI image reconstructions in terms of tissue radiodensity and tissue radiodensity contrast (in HU), and 3D morphology (in mm)

    The relevant outcome parameters defined for the BoneMRI application are related to the accurate reconstructions of tissue radiodensity, tissue radiodensity contrast and 3D morphology. The outcomes of geometrical (mm) and voxelwise (HU) accuracy of the radiodensity contrast assure accurate visualization of the osseous structures, in terms of visualization of the 3D osseous morphology of the spinal column. The following outcome parameters for BoneMRI are therefore defined: * Accuracy of the reconstruction of radiodensity and radiodensity contrast in Hounsfield Units (HU). * Accuracy of the 3D morphology of osseous structures in mm.

    Time frame: Expected duration: approximately 36-48 months to include 50 patients per MRI configuration.

07

Study locations

4 of 10 sites recruiting
08

Updates

1 registry update since Sep 25, 2026
Sites
5 sites changed recruiting status (5 now completed)
Show 5 sites
  • UZ Gent · Ghent, BelgiumRecruiting→Completed
  • UZ Leuven · Leuven, BelgiumRecruiting→Completed
  • VITAZ · Sint-Niklaas, BelgiumRecruiting→Completed
  • Hopital saint joseph · Marseille, FranceRecruiting→Completed
  • Kantonsspital st. gallen · Sankt Gallen, SwitzerlandRecruiting→Completed
Oct 7, 2026
Site contacts
Changed at 5 sites. See the sites
Show 5 sites
  • UZ Gent · Ghent, BelgiumContact removed l•••@ugent.be
  • UZ Leuven · Leuven, BelgiumContact removed b•••@uzleuven.be
  • VITAZ · Sint-Niklaas, BelgiumContact removed j•••@vitaz.be
  • Hopital saint joseph · Marseille, FranceContact removed k•••@hopital-saint-joseph.fr
  • Kantonsspital st. gallen · Sankt Gallen, SwitzerlandContact removed m•••@kssg.ch
Oct 7, 2026
Show all 1 update
  1. Oct 7, 2026
    5 sites changed recruiting status (5 now completed)
    Show 5 sites
    • UZ Gent · Ghent, BelgiumRecruiting→Completed
    • UZ Leuven · Leuven, BelgiumRecruiting→Completed
    • VITAZ · Sint-Niklaas, BelgiumRecruiting→Completed
    • Hopital saint joseph · Marseille, FranceRecruiting→Completed
    • Kantonsspital st. gallen · Sankt Gallen, SwitzerlandRecruiting→Completed
    Site contacts Changed at 5 sites. See the sites
    Show 5 sites
    • UZ Gent · Ghent, BelgiumContact removed l•••@ugent.be
    • UZ Leuven · Leuven, BelgiumContact removed b•••@uzleuven.be
    • VITAZ · Sint-Niklaas, BelgiumContact removed j•••@vitaz.be
    • Hopital saint joseph · Marseille, FranceContact removed k•••@hopital-saint-joseph.fr
    • Kantonsspital st. gallen · Sankt Gallen, SwitzerlandContact removed m•••@kssg.ch
    + 1 other change: verification date

From the registry record's own update history. This site started tracking changes on Sep 25, 2026; for anything earlier, see the record history on ClinicalTrials.gov ↗

09

Registry details

Key details

Study ID
NCT06745791
Lead sponsor
MRIguidance B.V.
Responsible party
Sponsor
First posted
Dec 20, 2024
Start date
Aug 20, 2021
Primary completion
Dec 31, 2026 (estimated)
Completion
Dec 31, 2026 (estimated)
Last update
Oct 7, 2026

Study contacts

Peter R Seevinck, dr. ir.
Contact
peter.seevinck@mriguidance.com
00316 81741711
Hilde Geraedts, phd
Contact
clinical@mriguidance.com
Peter R Seevinck, dr. ir.
study director · iCEO, Founder

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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