Purpose or Case Report: To recognize imaging artifacts that are unique to digital radiography (DR) and to learn techniques to reduce the most common image quality issues. DR systems in medical imaging have transformed planar xray, one of the oldest imaging modalities. Computed radiography (CR) and DR share some of the same image quality challenges including poor positioning, inappropriate techniques, and motion. There are image quality issues unique to DR that may be unfamiliar to new operators. Although, artifacts have been a part of imaging since the use of film-screen xray, with DR, the technologists have to be aware of new artifacts related to digital acquisition and processing. At times, pediatric DR imaging can present even bigger challenges. Technologists must learn methods to avoid DR imaging artifacts, and how to identify them before sending the image to the Picture Archiving and Communication System (PACS). This exhibit will review how to identify common DR imaging artifacts, explain the reason they occur, and suggest methods to reduce their interference with image quality.
Methods & Materials: Common DR artifacts were identified by review of recent literature and a retrospective review of images acquired at our institution. A physicist was consulted regarding the source of these DR image quality issues. A radiologist was consulted to assess how much these artifacts interfere with clinical interpretation. Image quality issues were evaluated for their appearance on both image viewing station and the radiologist viewing station in order to assess differences in conspicuity and appearance. Example cases were identified where DR artifacts are significantly more prominent on high resolution PACS monitors than they appear at the technologists work station. A case-based technologist staff education was developed.
Results: A case-based educational module was developed that reviews common artifacts in DR, the physical principles behind these artifacts, and their effect on diagnostic quality. Methods to reduce or eliminate these artifacts were reviewed and summarized. A protocol to communicate with Radiologists regarding digital artifacts was developed including best practices for determining when repeat imaging is required.
Conclusions: Technologists familiar with CR may face challenges when learning DR because image artifacts are different. Case based education on artifacts unique to digital imaging may reduce image quality issues and the need for repeat imaging leading to reduced radiation exposure in children.