Nuth Ellie K, Armbrust Laura J, Roush James K, Biller David S
Department of Clinical Sciences and Veterinary Health Center, College of Veterinary Medicine, Kansas State University, Manhattan, KS 66506.
J Am Vet Med Assoc. 2014 Apr 15;244(8):961-7. doi: 10.2460/javma.244.8.961.
To identify common errors in film and digital radiographs provided by referring veterinarians and determine the effect of such errors on the perceived diagnostic quality of image sets.
Prospective study.
135 sets of radiographic images acquired by referring veterinarians for client-owned small animals evaluated at a university hospital.
Sets of radiographs were prospectively collected and evaluated for proper performance of various radiographic technical variables including exposure, collimation, positioning, inclusion of all appropriate views, presence of artifacts, radiation safety, and labeling. Sets of radiographs were subjectively determined to be of diagnostic or nondiagnostic quality by 2 evaluators.
The variables exposure, correct positioning, absence of artifacts, and acquisition of all appropriate views were significantly associated with a determination of diagnostic quality for radiograph sets. Correct patient labeling, radiation safety, and x-ray beam centering and collimation were not associated with a determination of diagnostic quality for radiograph sets. The number of categories with errors was significantly associated with identification of radiograph sets as having diagnostic or nondiagnostic quality. Digital radiographs had a significantly lower number of image artifacts and significantly higher frequency of proper labeling versus film radiographs.
Results of this study suggested the technical variables proper exposure, proper positioning, absence of artifacts, and acquisition of all appropriate views were important for acquisition of sets of radiographs of high diagnostic quality. Identification of these errors and adjustment of radiographic technique to eliminate such errors would aid veterinarians in obtaining radiographs of high diagnostic quality and may reduce misinterpretation.
识别转诊兽医提供的胶片和数字X线片的常见错误，并确定这些错误对影像集可感知诊断质量的影响。
前瞻性研究。
135组由转诊兽医获取的、在大学医院接受评估的客户拥有的小动物的X线影像。
前瞻性收集X线片组，并评估各种X线摄影技术变量的正确执行情况，包括曝光、准直、定位、包含所有合适的视图、伪影的存在、辐射安全和标记。由2名评估人员主观判定X线片组具有诊断质量或非诊断质量。
曝光、正确定位、无伪影以及获取所有合适的视图这些变量与X线片组诊断质量的判定显著相关。正确的患者标记、辐射安全以及X线束对中与准直与X线片组诊断质量的判定无关。有错误的类别数量与X线片组被判定为具有诊断质量或非诊断质量显著相关。与胶片X线片相比，数字X线片的图像伪影数量显著更少，正确标记的频率显著更高。
本研究结果表明，适当曝光、正确定位、无伪影以及获取所有合适的视图这些技术变量对于获取具有高诊断质量的X线片组很重要。识别这些错误并调整X线摄影技术以消除此类错误，将有助于兽医获得具有高诊断质量的X线片，并可能减少误诊。
