By Ronald Eisenberg JD MD FACR, Alexander Margulis MD
Scientific imaging now performs an important position in analysis, number of remedy, and follow-up. despite the fact that, sufferers are frequently intimidated by means of the a number of imaging modalities on hand, the indicators for his or her use, the enforcing gear, what the examinations are like and the way lengthy they final, and the benefits and drawbacks of assorted tactics. This publication is designed to supply motives for those and different matters to be able to relieve a number of the nervousness on the topic of clinical imaging experiences.
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Extra resources for A Patient's Guide to Medical Imaging
If you are a diabetic and take insulin or another medicine for this condition, check with your doctor to determine if the dosage will have to be adjusted while you are not eating. What Does the Equipment Look Like? The barium swallow is performed with standard x-ray equipment that includes a ﬂuoroscope. This enables the radiologist or technologist to follow the barium as it is being swallowed and to position you during the procedure so that images can be obtained with minimal obscuration by overlapping structures.
The demonstration of abnormalities within these structures requires sharp detail of their inner walls, which can only be produced by barium or a combination of barium and air. 38 A PATIENT’S GUIDE TO MEDICAL IMAGING Figure 2-13. Diffuse esophageal spasm. How Do I Prepare for a Barium Swallow? You will be asked not to eat or drink anything after midnight the night before the examination. You also should not chew gum or smoke during that time. You may take needed medicine with a small sip of water.
Over the next half century, further improvements in screens and image intensiﬁers, as well as the use of ﬂat-panel detectors, have substantially increased image quality while minimizing the radiation dose to the patient. What Does the Equipment Look Like? The ﬂuoroscopic screen and the image intensiﬁer are housed in a metal box that slides over the table so that it can be positioned over the part of the body being examined (Fig. 2-12). The radiologist or technologist uses a foot switch to activate the x-ray source.
A Patient's Guide to Medical Imaging by Ronald Eisenberg JD MD FACR, Alexander Margulis MD