Comparison of computed radiography and conventional film-screen radiography of the equine stifle.
Abstract: Major advantages of computed radiography are the potential reduction of dose and the possibility of postprocessing. In our study, we compared conventional radiographs to digital radiographs of the equine stifle by subjective evaluation of diagnostic quality when using a decreasing photon flux (mAs). Twelve equine stifle joints from horses of different weight and size were examined. Conventional and digital radiographs were performed identically in a caudocranial projection with the tube angled 15 degrees. A series of four radiographs was performed in each technique with an increasing photon flux starting with 2.5 mAs and going up to 5, 10, and 20 mAs. All radiographs were evaluated subjectively in a blinded fashion by seven readers in terms of contrast, bone structure, and diagnostic value and were graded using a 1-5 scale. Results from conventional and digitized radiographs were compared, and differences between the individual observers were analyzed statistically. Contrast, bone structure, and diagnostic value from digital images were rated significantly better than from conventional images (p < .001). For both techniques, a decrease in ranking was found with a decrease of photon flux. There was only slight interobserver variability. A dose reduction up to a factor of 4 compared to a 100 speed film-screen system seems to be possible without loss of information. Weight and size of the horse are not major influences.
Publication Date: 2002-10-12 PubMed ID: 12375780DOI: 10.1111/j.1740-8261.2002.tb01033.xGoogle Scholar: Lookup
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- Comparative Study
- Evaluation Study
- Journal Article
- Anatomy
- Bones
- Clinical Pathology
- Clinical Study
- Comparative Study
- Computed Tomography
- Diagnosis
- Diagnostic Imaging
- Diagnostic Technique
- Disease Diagnosis
- Disease Treatment
- Equine Diseases
- Equine Health
- Horses
- Imaging Techniques
- Physiology
- Radiology
- Stifle Joint
- Veterinary Medicine
- Veterinary Procedure
- Veterinary Research
Summary
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This research paper compares conventional film-screen radiography to computed radiography for examining horse stifle joints and found that digital images are significantly better in contrast, bone structure, and diagnostic value. The study suggests digital radiography could potentially reduce the dose of radiation and allows for image post-processing.
Study Overview
- The experiment involved analysis of the digital and conventional radiographs of the stifle joints from 12 different horses of varied weights and sizes.
- Both types of images were recorded under identical conditions in a caudocranial projection, with an angled tube of 15 degrees.
- The experiment took four sets of radiographs for each technique. This was done at an increasing photon flux, starting from 2.5 mAs and increasing up to 5, 10, and 20 mAs.
Image Evaluation
- The radiographs were subjectively evaluated by seven independent observers.
- The evaluators were not informed about the image type (conventional or digital) to avoid bias.
- The images were scrutinized for contrast, bone structure, and diagnostic value, and were graded on a 1-5 scale.
Results & Comparisons
- The results of the conventional and digital radiographs comparisons were statistically analyzed.
- The digital images had better scores in terms of contrast, bone structure, and diagnostic value than the conventional images, making them significantly better (p < .001).
- However, it was found that with both techniques, the image quality diminished with a decrease in photon flux.
- There was minimal variation between the evaluations of the individual observers, indicating consistent results across readers.
Dose Reduction & Effect of Size and Weight
- The study suggests that digital radiography may allow for a radiation dose reduction by up to a factor of 4 compared to a 100 speed film-screen system, without any loss of information.
- Interestingly, this study found that the weight and size of the horses did not have a significant influence on the results.
Cite This Article
APA
Bindeus T, Vrba S, Gabler C, Rand T, Stanek C.
(2002).
Comparison of computed radiography and conventional film-screen radiography of the equine stifle.
Vet Radiol Ultrasound, 43(5), 455-460.
https://doi.org/10.1111/j.1740-8261.2002.tb01033.x Publication
Researcher Affiliations
- University of Veterinary Medicine Vienna, Clinic of Orthopaedics in Ungulates, Austria.
MeSH Terms
- Animals
- Horse Diseases / diagnostic imaging
- Horses / anatomy & histology
- Joint Diseases / diagnostic imaging
- Joint Diseases / veterinary
- Predictive Value of Tests
- Radiation Dosage
- Radiographic Image Interpretation, Computer-Assisted / standards
- Reference Values
- Stifle / anatomy & histology
- Stifle / diagnostic imaging
- Tomography, X-Ray Computed / standards
- Tomography, X-Ray Computed / veterinary
Citations
This article has been cited 2 times.- Thirunthaiyan MR, Mukherjee K, Prashanth T, Kumar DR. Predicting the Anatomical Location of Neck of Femur Fractures in Osteoporotic Geriatric Indian Population. Malays Orthop J 2022 Mar;16(1):103-111.
- Tebrün W, Ludewig E, Köhler C, Böhme J, Pees M. Needle-based storage-phosphor detector radiography is superior to a conventional powder-based storage phosphor detector and a high-resolution screen-film system in small patients (budgerigars and mice). Sci Rep 2019 Jul 11;9(1):10057.
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