HMI 101 | Health Medical Imaging | 100 Exam Questions on X-ray Physics, Fluoroscopy, Digital Radiography

This in-depth document features 100 expertly curated exam questions and correct answers for HMI 101 – Health Medical Imaging, designed to prepare students for university-level examinations in the 2025/2026 academic year. The content thoroughly covers foundational and advanced topics essential to understanding modern medical imaging practices. Key focus areas include: X-ray tube output parameters (effects of kVp, mA, exposure time, and mAs) Radiation dose calculations (including DAP, ESD, and Effective Dose) Half Value Layer (HVL) standards and regulatory compliance Fluoroscopy system performance, including spatial resolution and image artifacts Digital Radiography (DR) and Computed Radiography (CR) system principles Poisson noise analysis, digital image histograms, and pixel-based spatial resolution Electronic circuit concepts relevant to imaging equipment (resistance, current, logic gates) Radiation safety principles such as time, distance, shielding, and fetal dose considerations This resource is particularly useful for students in: Bachelor or Diploma programs in Medical Imaging Radiologic Technology and Diagnostic Radiography Biomedical Engineering with a focus on imaging modules Allied Health Sciences, Applied Physics, or Health Physics programs Suitable for exam preparation, review sessions, and practical reinforcement of imaging concepts, the document reflects current academic standards and clinical relevance in the field of diagnostic radiology. Keywords: radiation physics, x-ray output, exposure time, mA and kVp, HVL, DAP, image resolution, scatter grid, focal spot, digital radiography, computed radiography, fluoroscopy, Poisson noise, pixel size, dose calculation, radiologic safety, logic circuits, histogram analysis, spatial resolution, thermionic emission