Medical Physics: Some Recollections in Diagnostic X-ray Imaging and Therapeutic Radiology

Abstract

Medical physics has changed dramatically since 1895. There was a period of slow evolutionary change during the first 70 years after Roentgen's discovery of x rays. With the advent of the computer, however, both diagnostic and therapeutic radiology have undergone rapid growth and changes. Technologic advances such as computed tomography and magnetic resonance imaging in diagnostic imaging and three-dimensional treatment planning systems, stereotactic radiosurgery, and intensity modulated radiation therapy in radiation oncology have resulted in substantial changes in medical physics. These advances have improved diagnostic imaging and radiation therapy while expanding the need for better educated and experienced medical physics staff.

Comparative evaluation of the efficacy of clinical diagnosis, conventional radiography and ultrasonography (usg) in the diagnosis of odontogenic lesions – A short study

“…This method can be performed without the application of heavy sedation, has no effect on the general health of an individual and could be repeated as and when required. 3 Even though in recent years, it has been applied in the orofacial areas, it is still not used routinely in the diagnostic procedure for day-to-day clinical practice. USG could be extraordinarily helpful in recognizing, distinguishing and measuring the on-screen nodes in various jaw lesions including the inflammatory swellings due to dental and skin infections, salivary glands disorders and lymph node reaction due to inflammation or metastasis, cysts and cystic components, neoplasms and the post-operative internal tomography of oral tissues.…”

“…USG could be extraordinarily helpful in recognizing, distinguishing and measuring the on-screen nodes in various jaw lesions including the inflammatory swellings due to dental and skin infections, salivary glands disorders and lymph node reaction due to inflammation or metastasis, cysts and cystic components, neoplasms and the post-operative internal tomography of oral tissues. 3 It has been observed that in dentistry, the possible application of USG has been discovered and utilized only in very few researches. Hence, a need was felt to conduct a study to determine the potential usefulness of ultrasonography as a complimentary diagnostic tool for odontogenic lesions of the head and neck and to assess the diagnostic capability of ultrasonography the same.…”