• Radiation dosimetry and therapy planning emerge as a coherent methodological paradigm, integrating depth-dose data, isodose curve construction, energy absorption calculations, and wedge-filter strategies to optimize treatment and safety across radio-therapy studies [1], [3], [4], [9], [11], [20].

• Cardiovascular imaging and physiologic monitoring unify imaging modalities with hemodynamic measurements, visualizing cardiac chambers, vascular flows, plethysmography components, and electrophysiology-linked assessment tools [2], [5], [6], [8], [12], [13], [15].

• Imaging biology and radiobiology frame biological responses to radiation through imaging/ histology, including brain lesions, X-ray chromosomal effects, and virus-inactivation under radiative exposure [7], [10], [18], [19].

• Early imaging instrumentation and diagnostic methods reflect rapid radiographic/methodological development, spanning roentgenkymography, heart-sound recording via cathode-ray, and temporomandibular radiography innovations [12], [13], [16], [17].