Essentials of Radiographic Physics and Imaging

Essentials of Radiographic Physics and Imaging, 4th Edition, delivers comprehensive instructional coverage of physical science for radiography students, radiologic science students, and practicing radiologic technologists. Authored by James Johnston, this foundational textbook establishes a clear understanding of diagnostic radiation physics, technical equipment operations, and image formation without overwhelming readers with unnecessary theoretical complexity.

The text integrates core physical topics including atomic structure, electricity, magnetism, and electromagnetic radiation, followed by x-ray production and electrical circuits. It progresses into x-ray interactions with matter, digital image receptors, exposure factors, scatter control techniques, image quality evaluation, fluoroscopic equipment, and advanced imaging modalities such as computed tomography.

This revised edition incorporates the recommended curriculum guidelines set by the American Society of Radiologic Technologists. By integrating updated ARRT and ASRT professional standards, the textbook supports students preparing for credentialing certification examinations while helping learners build essential competencies for modern clinical diagnostic environments.