| Evaluation of the effect of computed tomography scan protocols and freeform fabrication methods on bone biomodel accuracy. | |
| | |
MedLine Citation:
|
PMID: 21879975 Owner: NLM Status: In-Data-Review |
Abstract/OtherAbstract:
|
Objective-To assess the effect of computed tomography (CT) scan protocols (radiation amounts) and fabrication methods on biomodel accuracy and variability. Sample-Cadaveric femur of a Basset Hound. Procedures-Retroreconstructions (n = 158) were performed of 16 original scans and were visually inspected to select 17 scans to be used for biomodel fabrication. Biomodels of the 17 scans were made in triplicate by use of 3 freeform fabrication processes (stereolithography, fused deposition modeling, and 3-D printing) for 153 models. The biomodels and original bone were measured by use of a coordinate measurement machine. Results-Differences among fabrication methods accounted for 2% to 29% of the total observed variation in inaccuracy and differences among method-specific radiation configurations accounted for 4% to 44%. Biomodels underestimated bone length and width and femoral head diameter and overestimated cortical thickness. There was no evidence of a linear association between thresholding adjustments and biomodel accuracy. Higher measured radiation dose led to a decrease in absolute relative error for biomodel diameter and for 4 of 8 cortical thickness measurements. Conclusions and Clinical Relevance-The outside dimensions of biomodels have a clinically acceptable accuracy. The cortical thickness of biomodels may overestimate cortical thickness. Variability among biomodels was caused by model fabrication reproducibility and, to a lesser extent, by the radiation settings of the CT scan and differences among fabrication methods. |
| | |
Authors:
|
Kathryn L Fitzwater; Denis J Marcellin-Little; Ola L A Harrysson; Jason A Osborne; E Christine Poindexter |
Related Documents
:
|
17962935 - Gradient-recalled echo sequences in direct shoulder mr arthrography for evaluating the ... 11105035 - Utilization of "used" vials: cost-effective technique for mr arthrography. 21889895 - Will ct ordering practices change if we educate residents about the potential effects o... 12169465 - Serial mr imaging of annular tears in lumbar intervertebral disks. 9196515 - Serial computed tomographic evaluation in desquamative interstitial pneumonia. 16861505 - Tibialis anterior tendon and extensor retinaculum: imaging in cadavers and patients wit... |
Publication Detail:
|
Type: Journal Article |
Journal Detail:
|
Title: American journal of veterinary research Volume: 72 ISSN: 1943-5681 ISO Abbreviation: Am. J. Vet. Res. Publication Date: 2011 Sep |
Date Detail:
|
Created Date: 2011-09-01 Completed Date: - Revised Date: - |
Medline Journal Info:
|
Nlm Unique ID: 0375011 Medline TA: Am J Vet Res Country: United States |
Other Details:
|
Languages: eng Pagination: 1178-85 Citation Subset: IM |
Affiliation:
|
Department of Clinical Sciences, College of Veterinary Medicine, North Carolina State University, Raleigh, NC 27606. |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
|
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Comparison of temporospatial and kinetic variables of walking in small and large dogs on a pressure-...
Next Document: Anatomic, histologic, and two-dimensional-echocardiographic evaluation of mitral valve anatomy in do...