Sim Hoffman has been a practicing radiologist for nearly forty years. Currently the medical director at the Diagnostic Imaging Network Medical Group in Anaheim, California, Sim Hoffman is a graduate of the University of Virginia School of Medicine and a Certified Specialist of Nuclear Medicine, where he specializes in Diagnostic Radiology.
Diagnostic radiology, as the term implies, uses imaging exams such as x-rays and magnetic resonance imaging (MRI) to create detailed images of inside a patient’s body. X-rays have been around for more than a century. MRIs are a more recent technology. Unlike x-rays, they use a magnetic field to create an image. The patient undergoing an MRI is physically inserted into an MRI machine. The magnetic field temporarily realigns the body’s hydrogen atoms. Radio waves cause them to produce faint signals that are used to make a cross-sectional image that doctors can interpret to make a diagnosis.
Different kinds of x-rays are used for different reasons. A mammogram, for example, is a type of x-ray that is used in breast exams, and a barium enema is used to examine the gastrointestinal tract. An MRI may be used to diagnose spinal cord injuries, strokes, tumors, brain injuries from traumas and aneurysms of cerebral vessels. An MRI may also be used to examine tissue such as cartilage and bone, as in diagnosing a torn rotator cuff.
Sim Hoffman is a native of Los Angeles and has spent most of his life there. He received undergraduate degrees from UCLA, where he double majored in history and biochemistry.
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