This chapter will briefly introduce you to the major imaging modalities: conventional radiography, computed tomography, ultrasound, magnetic resonance imaging, and the use of fluoroscopy. Nuclear medicine has its own online chapter (see e-Appendix A ). In every chapter of this…
How It Works A radioactive isotope (radioisotope) is an unstable form of an element that emits radiation from its nucleus as it decays. Eventually the end product is a stable, nonradioactive isotope of another element. Radioisotopes can be produced artificially…
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Ionizing Radiation in Radiology In the modalities of conventional radiography, CT and fluoroscopy, images are produced using ionizing radiation. Besides producing the image, this radiation can also have harmful effects if used in excess. All health care providers should understand…
Recognizing Adult Heart Disease From the Frontal Chest Radiograph This is a system for diagnosing cardiac disease in adults by asking a series of questions in a set fashion , the answers to which are certain fundamental observations made from…
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Children differ physiologically from adults and are susceptible to abnormalities in development and maturation not seen in adults. They differ in anatomy (e.g., the thymus) and are more susceptible to the harmful effects of ionizing radiation. This chapter highlights some…
Advances in neuroimaging have had a remarkable impact on the diagnosis and treatment of neurologic diseases ranging from earlier detection and treatment of stroke to a more timely diagnosis of dementia, from the rapid detection and treatment of cerebral aneurysms…
Abdominal Trauma The role of advanced imaging techniques deserves special mention in abdominal trauma. Radiology has made a significant impact on the lives of traumatized patients by distinguishing those patients who can be managed conservatively from those who need surgical…