Prospective assessment of bone texture parameters at the hand in rheumatoid arthritis

Sparsa, L.; Kolta, Sami; Briot, Karine; Paternotte, Simon; Masri, Rasha; Lœuille, Damien; Geusens, Piet; Roux, Christian

doi:10.1016/j.jbspin.2012.12.006

Cited by 4 publications

(7 citation statements)

References 22 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The method could be also useful in other applications in medicine and in engineering. In medicine, it could be used in the analysis of rheumatoid arthritis and bone mineral density using hand radiographs, 14,16 analysis of occlusal forces and detection of osteoporosis using dental radiographs, 39, 40 detection of lung nodules in chest radiographs, 41 or classification of skin lesions on dermoscopic images. 42 Also, the method could be extended to work on 3D images such as MRI and used, for example, in the characterisation of brain tumors.…”

Section: Discussionmentioning

confidence: 99%

“…They include statistical methods such as secondorder histogram statistics of gray-scale level values 14 and co-occurrence and run-length matrices. 15,16 However, their usefulness is limited by not accounting for the fractal properties of TB texture. Studies showed that the fractals are related to 3D bone structure.…”

Section: Introductionmentioning

confidence: 99%

“…13,17 Therefore, a fractal approach, called a maximum likelihood estimator (MLE) was used. 15,16 In this approach, fractal dimensions (FDs) are estimated in different directions. The dimensions are a measure of the roughness of bone texture on radiographs, i.e., higher dimension values correspond to higher roughness.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Directional fractal signature methods for trabecular bone texture in hand radiographs: Data from the Osteoarthritis Initiative

Wolski¹,

Podsiadło²,

Stachowiak³

2014

Medical Physics

View full text Add to dashboard Cite

show abstract

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Directional fractal signature methods for trabecular bone texture in hand radiographs: Data from the Osteoarthritis Initiative

Wolski¹,

Podsiadło²,

Stachowiak³

2014

Medical Physics

View full text Add to dashboard Cite

show abstract

“…13 Bone texture regions have also been used in studying rheumatoid arthritis and osteoporosis. [14][15][16][17] The TB texture analysis, however, is not yet a part of the clinical assessment of OA. The main reason is that the manual selection of bone texture regions is timeconsuming, tedious, and observer-dependent.…”

Section: Introductionmentioning

confidence: 99%

“…Observer selects manually or semi-manually several regions on fingers' bones that are small in size and arbitrarily oriented on X-ray images. [13][14][15][16] To make the process easier and faster, an accurate and automated method for TB region selection is required.…”

Section: Introductionmentioning

confidence: 99%

Automated selection of bone texture regions on hand radiographs: Data from the Osteoarthritis Initiative

Wolski

Englund

Stachowiak

et al. 2016

Proc Inst Mech Eng H

View full text Add to dashboard Cite

Manual selection of finger trabecular bone texture regions on hand X-ray images is time-consuming, tedious, and observer-dependent. Therefore, we developed an automated method for the region selection. The method selects square trabecular bone regions of interest above and below the second to fifth distal and proximal interphalangeal joints. Two regions are selected per joint (16 regions per hand). The method consists of four integral parts: (1) segmentation of a radiograph into hand and background, (2) identification of finger regions, (3) localization of center points of heads of distal phalanges and the distal interphalangeal, proximal interphalangeal, and metacarpophalangeal joints, and (4) placement of the regions of interest under and above the distal and proximal interphalangeal joints. A gold standard was constructed from regions selected by two observers on 40 hand X-ray images taken from Osteoarthritis Initiative cohort. Datasets of 520 images were generated from the 40 images to study the effects of hand and finger positioning. The accuracy in regions selection and the agreement in calculating five directional fractal parameters were evaluated against the gold standard. The accuracy, agreement, and effects of hand and finger positioning were measured using similarity index (0 for no overlap and 1 for entire overlap) and interclass correlation coefficient as appropriate. A high accuracy in selecting regions (similarity index 5 0.79) and a good agreement in fractal parameters (interclass correlation coefficient 5 0.58) were achieved. Hand and finger positioning did not affect considerably the region selection (similarity index 5 0.70). These results indicate that the method developed selects bone regions on hand X-ray images with accuracy sufficient for fractal analyses of bone texture.

show abstract

The Role of the Immune System in the Development of Osteoporosis and Fracture Risk

et al. 2016

View full text Add to dashboard Cite

Prospective assessment of bone texture parameters at the hand in rheumatoid arthritis

Cited by 4 publications

References 22 publications

Directional fractal signature methods for trabecular bone texture in hand radiographs: Data from the Osteoarthritis Initiative

Directional fractal signature methods for trabecular bone texture in hand radiographs: Data from the Osteoarthritis Initiative

Automated selection of bone texture regions on hand radiographs: Data from the Osteoarthritis Initiative

The Role of the Immune System in the Development of Osteoporosis and Fracture Risk

Contact Info

Product

Resources

About