Millions of Americans have lost their health insurance. In Canada, and many countries in Europe, health insurance is guaranteed. Some experts here argue that universal health insurance can be successful. Other equally well qualified people counter that it would be too expensive or claim that the care would be poor. They believe that market forces will fix any shortcomings of the U. Health insurance in the United States is a relatively new phenomenon.
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Medical imaging is the technique and process of creating visual representations of the interior of a body for clinical analysis and medical intervention, as well as visual representation of the function of some organs or tissues physiology. Medical imaging seeks to reveal internal structures hidden by the skin and bones, as well as to diagnose and treat disease. Medical imaging also establishes a database of normal anatomy and physiology to make it possible to identify abnormalities. Although imaging of removed organs and tissues can be performed for medical reasons, such procedures are usually considered part of pathology instead of medical imaging. As a discipline and in its widest sense, it is part of biological imaging and incorporates radiology which uses the imaging technologies of X-ray radiography , magnetic resonance imaging , medical ultrasonography or ultrasound, endoscopy , elastography , tactile imaging , thermography , medical photography and nuclear medicine functional imaging techniques as positron emission tomography PET and Single-photon emission computed tomography SPECT.
Medicine is the science and practice of establishing the diagnosis , prognosis , treatment , and prevention of disease. Medicine encompasses a variety of health care practices evolved to maintain and restore health by the prevention and treatment of illness. Contemporary medicine applies biomedical sciences , biomedical research , genetics , and medical technology to diagnose , treat, and prevent injury and disease, typically through pharmaceuticals or surgery , but also through therapies as diverse as psychotherapy , external splints and traction , medical devices , biologics , and ionizing radiation , amongst others. Medicine has been around for thousands of years, during most of which it was an art an area of skill and knowledge frequently having connections to the religious and philosophical beliefs of local culture.