A Patient's Guide to Medical Imaging by Ronald Eisenberg JD MD FACR, Alexander Margulis MD

By Ronald Eisenberg JD MD FACR, Alexander Margulis MD

Scientific imaging now performs an incredible function in prognosis, collection of remedy, and follow-up. even though, sufferers are frequently intimidated through the a number of imaging modalities to be had, the indicators for his or her use, the implementing gear, what the examinations are like and the way lengthy they final, and the benefits and drawbacks of varied systems. This ebook is designed to supply motives for those and different concerns with a view to relieve a few of the anxiousness with regards to scientific imaging reports.

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However, the demonstration of abnormalities within these structures requires sharp detail of their inner walls, which can only be 48 A PATIENT’S GUIDE TO MEDICAL IMAGING Figure 2-17. Crohn’s disease. Single-contrast small bowel series shows a characteristic pattern of multiple areas of severe narrowing (string sign) separated by normal segments (skip lesions). produced by coating them with barium or a combination of barium and air (or methylcellulose). How Do I Prepare for a Small Bowel Series?

A) Localized polpyoid mass with ulcerations (arrow). (B) Bulky irregular filling defect with destruction of mucosal folds. How Is the Test Performed? You will be asked to remove any clothing covering your chest and upper abdomen and will be given a lightweight gown to wear. The test usually begins with you standing against the x-ray table, which has been raised to an upright position. As you drink the barium, the radiologist or technologist will observe what is happening using an x-ray fluoroscope, a device that projects the radiographic images like a movie onto a monitor that is similar to a television screen.

44 A PATIENT’S GUIDE TO MEDICAL IMAGING What Should You Tell Your Doctor? Before going for an upper GI series, make certain to tell your doctor if you: • Are or suspect that you may be pregnant • Are allergic to barium or any medicine • Are allergic to any ingredients of the artificial chocolate, berries, or citrus fruit used to flavor the barium mixture Why Was the Upper GI series Developed and How Does It Work? Air can be seen within portions of the esophagus, stomach, duodenum, and upper small bowel on plain radiographs of the chest and abdomen.

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