Automatic segmentation of the ribs, the vertebral column, and the spinal canal in pediatric computed tomographic images.
We propose methods to perform automatic identification of the rib structure, the vertebral column, and the spinal canal in computed tomographic (CT) images of pediatric patients. The segmentation processes for the rib structure and the vertebral column are initiated using multilevel thresholding and...
| Publicado en: | Journal of Digital Imaging Vol. 23; no. 3; pp. 301 - 323 |
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| Autores principales: | , , |
| Formato: | diagnostic images equations & formulas research tables/charts Journal Article |
| Publicado: |
Springer Nature
Jun2010
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| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ccm&AN=105202690&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 105202690 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 08971889 DOQ jtl: Journal of Digital Imaging issn: 08971889 maglogo: N pubinfo: dt: Jun2010 vid: 23 iid: 3 pid: 237 pub: Springer Nature place: New York, New York artinfo: ui: 105202690 2010656978 10.1007/s10278-009-9176-x NLM19219504 105202690 ppf: 301 ppct: 22 formats: fmt: @attributes: type: P tig: atl: Automatic segmentation of the ribs, the vertebral column, and the spinal canal in pediatric computed tomographic images. aug: au: Banik S Rangayyan RM Boag GS affil: Department of Electrical and Computer Engineering, Schulich School of Engineering, University of Calgary, 2500 University Drive NW, Calgary, AB, Canada T2N 1N4. sug: subj: Cervical Vertebrae Radiography Image Processing, Computer Assisted Methods Lumbar Vertebrae Radiography Ribs Radiography Spinal Canal Radiography Thoracic Vertebrae Radiography Algorithms Automation Cervical Vertebrae Pathology Confidence Intervals Evaluation Research Funding Source Human Lumbar Vertebrae Pathology Ribs Pathology Spinal Canal Pathology Thoracic Vertebrae Pathology Tomography, X-Ray Computed ab: We propose methods to perform automatic identification of the rib structure, the vertebral column, and the spinal canal in computed tomographic (CT) images of pediatric patients. The segmentation processes for the rib structure and the vertebral column are initiated using multilevel thresholding and the results are refined using morphological image processing techniques with features based on radiological and anatomical prior knowledge. The Hough transform for the detection of circles is applied to a cropped edge map that includes the thoracic vertebral structure. The centers of the detected circles are used to derive the information required for the opening-by-reconstruction algorithm used to segment the spinal canal. The methods were tested on 39 CT exams of 13 patients; the results of segmentation of the vertebral column and the spinal canal were assessed quantitatively and qualitatively by comparing with segmentation performed independently by a radiologist. Using 13 CT exams of six patients, including a total of 458 slices with the vertebra from different sections of the vertebral column, the average Hausdorff distance was determined to be 3.2 mm with a standard deviation (SD) of 2.4 mm; the average mean distance to the closest point (MDCP) was 0.7 mm with SD = 0.6 mm. Quantitative analysis was also performed for the segmented spinal canal with three CT exams of three patients, including 21 slices with the spinal canal from different sections of the vertebral column; the average Hausdorff distance was 1.6 mm with SD = 0.5 mm, and the average MDCP was 0.6 mm with SD = 0.1 mm. pubtype: Academic Journal doctype: diagnostic images equations & formulas research tables/charts Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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