Comparison of image quality using a X-ray stereotactical whole-body system and a direct flat-panel X-ray device in examinations of the pelvis and knee
| Autor: | Martin Hellmich, David Maintz, S Peters, K. Wegmann, K. B. Krug, C. Weber, K. Ewen, Dirk Müller, B Wein, H Schwabe, V. Sendler, N Sinzig |
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| Rok vydání: | 2013 |
| Předmět: |
Adult
Male medicine.medical_specialty Image quality Radiography Sensitivity and Specificity Standard deviation Pelvis Stereotaxic Techniques Young Adult Imaging Three-Dimensional medicine Humans Radiology Nuclear Medicine and imaging Knee Whole Body Imaging X-Ray Intensifying Screens Image resolution Digital radiography Aged Aged 80 and over business.industry Reproducibility of Results Equipment Design Middle Aged Image Enhancement Equipment Failure Analysis medicine.anatomical_structure Radiological weapon Orthopedic surgery Female Radiology business |
| Zdroj: | RoFo : Fortschritte auf dem Gebiete der Rontgenstrahlen und der Nuklearmedizin. 186(1) |
| ISSN: | 1438-9010 |
| Popis: | Purpose: The novel biplanar X-ray unit “EOS”, EOS Imaging, allows to acquire simultaneously 2 perpendicular planes of full-length spine and limbs and to measure spatially correct angles based on the acquired image data sets. This is to be seen alongside with a low spatial resolution, high investment costs and high operating expenses. The use of the biplanar X-ray unit in morphology based scelettal radiography might improve the cost-benefit-relation. Thus, the purpose of this study was to compare image quality of the EOS-unit and the flat panel (FP)-technology as reference in a clinical setting. Materials and Methods: All 114 patients of the Orthopedic Hospital Dept., who had a biplanar full-length lower limb radiograph and a FP-examination of the pelvis and/or the knee with maximum time interval of 3 months without changes in the clinical and radiological findings were included in the study. All X-ray examinations had been carried out due to clinical indications. Secondary captures comparable to the FP-images were extracted from the electronic EOS-image data sets. 4 radiologists independently from each other compared the visualization of normal anatomical structures of the pseudonymous EOS- and FP-images in a randomized order. Results: In the overwiew of all readers and all sceletal regions image quality of the FP-images was considered being superior in a mean of 83 ± 13 % standard deviation of the pair comparisons (minimum 48 %, maximum 100 %). Image quality of the EOS-images was assessed as being superior in 2 ± 3 % of the cases (0 %, 10 %). Image quality of 0.8 ± 3 % of the FP-images (0 %, 17 %) and 30 ± 34 % (0 %, 100 %) of the EOS-images was estimated as diagnostically inadequate. 30 ± 33 % of the pair comparisons (0 %, 100 %) showed a diagnostically inadequate image quality of the EOS-images and a diagnostically good image quality of the FP-images. Conclusion: Image quality of biplanar full-length lower limb X-ray examinations is not suitable to be used for the diagnostic assessment of the morphological bone structure using the currently available technological setting. Key points: Citation Format |
| Databáze: | OpenAIRE |
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