PRC RadTech study guide
PRC RadTech · Work through your exam, one topic at a time.
The Radiologic Technologist licensure examination is one of the licensure examinations administered by the Professional Regulation Commission (PRC) of the Philippines. In PRC's own listings the profession appears both as RADIOLOGIC TECHNOLOGIST and as X-RAY TECHNOLOGIST, and PRC issues Certificates of Board Rating and Passing to those who qualify. The credential is for graduates of a radiologic technology program who intend to practise diagnostic imaging and radiation-related procedures under professional regulation, and it is the licence employers and hospitals check when hiring. The examination is organised around four broad areas: radiologic physics, equipment and maintenance; radiographic positioning and radiographic anatomy; radiographic image production and evaluation; and radiation protection together with laws, ethics and professional practice. Topics on this exam: Radiologic Physics, Equipment and Maintenance, Radiographic Positioning and Radiographic Anatomy, Radiographic Image Production and Evaluation, and Radiation Protection and Radiologic Technology Laws, Ethics and Professional Practice. The PRC RadTech study guide has 4 sections and about 1,526 words.
01Radiologic Physics, Equipment and Maintenance
X-rays are produced when electrons are accelerated from a heated filament to an anode. Most energy becomes heat. Bremsstrahlung arises from nuclear-field deceleration and creates a continuous spectrum. Characteristic radiation arises when an inner-shell vacancy is filled and produces discrete peaks whose energies depend on the anode material, not on kVp.
572 words, about 3 min02Radiographic Positioning and Radiographic Anatomy
Position describes the patient's physical orientation; projection describes the path of the central ray. AP, PA, lateral, oblique, and tangential are projections. Decubitus is named by the side on which the patient lies. Chest PA: upright, 72 in SID, chin elevated, shoulders rolled forward, full inspiration, and no rotation.
247 words, about 1 min03Radiographic Image Production and Evaluation
A diagnostic image balances brightness, contrast, spatial resolution, distortion, and noise. In film-screen, mAs mainly controls density and kVp controls contrast. In digital imaging, mAs controls receptor exposure and quantum noise; displayed brightness is adjusted by windowing. kVp still affects contrast and scatter.
261 words, about 1 min04Radiation Protection and Radiologic Technology Laws, Ethics and Professional Practice
Justification, optimization, and dose limitation support ALARA. Time, distance, and shielding are the practical tools. The inverse-square law makes distance powerful: doubling distance quarters dose. Use the shortest fluoroscopy time, last-image hold, pulsed fluoroscopy, collimation, and appropriate shielding.
446 words, about 2 min