TBS INSIGHT
Device Facts
| Record ID | K121716 |
|---|---|
| Device Name | TBS INSIGHT |
| Applicant | Medimaps Group SA |
| Product Code | KGI · Radiology |
| Decision Date | Oct 5, 2012 |
| Decision | SESE |
| Submission Type | Traditional |
| Regulation | 21 CFR 892.1170 |
| Device Class | Class 2 |
| Attributes | Software as a Medical Device, Real-World Evidence |
Real-World Evidence
| Submission | Device | Sponsor | RWD Sources | RWE Use Summary | Key Tags |
|---|---|---|---|---|---|
| K121716 · Oct 5, 2012 | TBS INSIGHT | Medimaps Group SA | Clinical study cohorts; DEXA examination files; Patient treatment records | The device performance was evaluated using cross-sectional and longitudinal clinical studies to assess diagnostic value (fracture vs. non-fractured), prognostic value (fracture prediction), and treatment monitoring capabilities compared to standard DEXA analysis. | Fracture risk assessment; Longitudinal clinical studies; Treatment monitoring; Diagnostic value |
Clinical Evidence
| Study Design | Population | Comparator | Key Endpoints |
|---|---|---|---|
| Cross-sectional studies (5 studies); Cross-sectional | Women with and without fractures | Non-fractured control patients | TBS differentiation between fractured and non-fractured patients |
| Longitudinal studies (3 studies); Longitudinal | Patients at risk of fracture | Not applicable for this study | Fracture prediction |
| Treatment follow-up studies (6 studies); Comparative treatment study | Patients treated with various bone therapies (e.g., zoledronic acid, teriparatide, bisphosphonates) | Placebo or alternative treatment | Monitoring treatment effect on TBS and BMD |
Indications for Use
The Med-Imaps TBS iNsight is a software provided for use as a complement to a DEXA analysis. It computes the antero-posterior spine DEXA examination file and calculates a score (Trabecular Bone Score - TBS) that is compared to those of the age-matched controls. The TBS is derived from the texture of the DEXA image and has been shown to be related to bone microarchitecture and fracture risk. This data provides information independent of BMD value; it is used as a complement to the data obtained from the DEXA analysis and the clinical examination (questioning by the clinician about patient history, bioassay of bone resorption markers ... ). The TBS score can assist the health care professional in assessment of fracture risk and in monitoring the effect of treatments on patients across time. Overall fracture risk will depend on many additional factors that should be considered before making diagnostic or therapeutic recommendations. The software does not diagnose disease, or recommend treatment regimens. Only the health care professional can make these judgments.
Device Story
TBS iNsight is a software package for bone microarchitecture assessment; inputs are AP spine DEXA examination files (dual-energy images, regions of interest, patient data). The device utilizes a quantitative bone micro-structural algorithm to analyze the texture/porosity of trabecular bone in DEXA projection images via an experimental variogram approach. It produces a Trabecular Bone Score (TBS) compared against age-matched controls. Used by healthcare professionals in clinical settings to complement DEXA analysis and clinical history. Output assists in fracture risk assessment and monitoring treatment efficacy over time. Does not diagnose disease or recommend treatment; clinical judgment remains with the physician.
Clinical Evidence
Evidence includes bench testing and clinical studies. Bench testing: 30 human cadaveric vertebrae showed significant correlations between TBS and 3D microarchitecture parameters (µCT) and DEXA acquisitions. Ex-vivo reproducibility precision error <0.02, CV% <1.5%, least significant change <4.2%. Clinical studies: 5 cross-sectional studies showed TBS significantly lower in fractured vs. non-fractured women. 3 longitudinal studies showed TBS and BMD predicted fractures independently. In-vivo reproducibility (L1-L4) achieved 1.8% CV%. Treatment follow-up studies (zoledronic acid, teriparatide, bisphosphonates, etc.) showed results consistent with literature. Age-related reference data established for US white women aged 30-90.
Technological Characteristics
Software-based bone microarchitecture assessment. Utilizes quantitative bone micro-structural algorithm based on experimental variogram approach to analyze DEXA image texture. Connectivity: Importation of external DEXA data. Standards: IEC 62304:2006, ISO 14971:2007, FDA software validation and cybersecurity guidance. Operates on DEXA projection images.
Indications for Use
Indicated for use as a complement to DEXA analysis in patients undergoing bone density assessment. Assists healthcare professionals in evaluating fracture risk and monitoring treatment effects over time. Not for use as a standalone diagnostic tool.
Regulatory Classification
Identification
A bone densitometer is a device intended for medical purposes to measure bone density and mineral content by x-ray or gamma ray transmission measurements through the bone and adjacent tissues. This generic type of device may include signal analysis and display equipment, patient and equipment supports, component parts, and accessories.
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