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Skeletal Radiology

, Volume 46, Issue 11, pp 1541–1551 | Cite as

Normative values for CT-based texture analysis of vertebral bodies in dual X-ray absorptiometry-confirmed, normally mineralized subjects

  • Manoj Mannil
  • Matthias Eberhard
  • Anton S. Becker
  • Denise Schönenberg
  • Georg Osterhoff
  • Diana P. Frey
  • Ender Konukoglu
  • Hatem Alkadhi
  • Roman GuggenbergerEmail author
Scientific Article

Abstract

Objectives

To develop age-, gender-, and regional-specific normative values for texture analysis (TA) of spinal computed tomography (CT) in subjects with normal bone mineral density (BMD), as defined by dual X-ray absorptiometry (DXA), and to determine age-, gender-, and regional-specific differences.

Materials and methods

In this retrospective, IRB-approved study, TA was performed on sagittal CT bone images of the thoracic and lumbar spine using dedicated software (MaZda) in 141 individuals with normal DXA BMD findings. Numbers of female and male subjects were balanced in each of six age decades. Three hundred and five TA features were analyzed in thoracic and lumbar vertebrae using free-hand regions-of-interest. Intraclass correlation (ICC) coefficients were calculated for determining intra- and inter-observer agreement of each feature. Further dimension reduction was performed with correlation analyses.

Results

The TA features with an ICC < 0.81 indicating compromised intra- and inter-observer agreement and with Pearson correlation scores r > 0.8 with other features were excluded from further analysis for dimension reduction. From the remaining 31 texture features, a significant correlation with age was found for the features mean (r = −0.489, p < 0.001), variance (r = −0.681, p < 0.001), kurtosis (r = 0.273, p < 0.001), and WavEnLL_s4 (r = 0.273, p < 0.001). Significant differences were found between genders for various higher-level texture features (p < 0.001). Regional differences among the thoracic spine, thoracic–lumbar junction, and lumbar spine were found for most TA features (p < 0.021).

Conclusion

This study established normative values of TA features on CT images of the spine and showed age-, gender-, and regional-specific differences in individuals with normal BMD as defined by DXA.

Keywords

Computed tomography Texture analysis Spine Bone 

Abbreviations

BMI

Body mass index

CT

Computed tomography

DICOM

Digital imaging and communications in medicine

DXA

Dual X-ray absorptiometry

FOV

Field of view

GLCM

Gray level co-occurrence matrix

IRB

Institutional review board

kVp

Peak kilovoltage

L

Lumbar vertebra(e)

RLM

Run length matrix

SD

Standard deviation

TA

Texture analysis

Th

Thoracic vertebra(e)

TLJ

Thoracic–lumbar junction

Notes

Compliance with ethical standards

Conflicts of interest

The authors declare that they have no conflicts of interest.

Supplementary material

256_2017_2728_MOESM1_ESM.doc (35 kb)
ESM 1 (DOC 35 kb)
256_2017_2728_MOESM2_ESM.doc (319 kb)
ESM 2 (DOC 319 kb)
256_2017_2728_MOESM3_ESM.doc (138 kb)
ESM 3 (DOC 137 kb)

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Copyright information

© ISS 2017

Authors and Affiliations

  • Manoj Mannil
    • 1
  • Matthias Eberhard
    • 1
  • Anton S. Becker
    • 1
  • Denise Schönenberg
    • 2
  • Georg Osterhoff
    • 2
  • Diana P. Frey
    • 4
  • Ender Konukoglu
    • 3
  • Hatem Alkadhi
    • 1
  • Roman Guggenberger
    • 1
    Email author
  1. 1.Institute of Diagnostic and Interventional RadiologyUniversity Hospital ZurichZurichSwitzerland
  2. 2.Division of Trauma SurgeryUniversity Hospital ZurichZurichSwitzerland
  3. 3.Department of Information Technology and Electrical EngineeringComputer Vision LaboratoryZurichSwitzerland
  4. 4.Department of RheumatologyUniversity Hospital ZurichZurichSwitzerland

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