RADR 2305 Digital Imaging Q&A 200+ Questions – Radiography Digital Systems CR DR PACS Image Processing

This document provides a comprehensive collection of over 200 exam-style questions and correct answers focused on digital imaging concepts in radiography for RADR 2305. It covers essential principles required to understand digital image acquisition, processing, storage, and display, making it a complete study resource for both theoretical exams and clinical applications. The material begins with foundational computer and digital concepts such as hardware, software, binary systems, memory, and data processing (pages 1–3), then progresses into core imaging principles including pixels, voxels, matrix size, and spatial resolution (pages 3–4) . It provides detailed coverage of image quality factors such as signal-to-noise ratio (SNR), dynamic range, contrast manipulation through window level and width, and the relationship between pixel size, matrix size, and image detail (pages 5–6). The document further explores advanced digital imaging systems, including computed radiography (CR) and digital radiography (DR), direct vs indirect acquisition methods, photostimulable phosphor (PSP) technology, and detector materials such as amorphous selenium and amorphous silicon (pages 8–12). It also includes key topics such as exposure indicators (S-number, EI), histogram analysis, image artifacts, and image processing techniques like filtering and edge enhancement. Additionally, it covers PACS, RIS, HIS systems, DICOM standards, and networking concepts (LAN/WAN), providing a complete understanding of modern radiology workflows (pages 12–18). The content aligns closely with standard textbooks such as Radiographic Imaging and Exposure by Terri L. Fauber and Digital Radiography: Physical Principles and Quality Control by Euclid Seeram. It is particularly suitable for students enrolled in Radiologic Technology (RADR2305), Medical Imaging, and Radiography programs. This document is ideal for radiography students, imaging students, and allied health learners preparing for exams, lab assessments, clinical competencies, or registry-level examinations such as ARRT. Keywords: digital imaging radiography, computed radiography, direct radiography, CR DR systems, PACS RIS HIS, DICOM standards, image processing, window level, window width, pixel size, matrix size, spatial resolution, signal to noise ratio, dynamic range, exposure index, S number, histogram analysis, image artifacts, digital detectors, amorphous selenium, amorphous silicon, radiography exam prep