1 What is shown in Figure 27-1 ? A topogram from a computed tomographic colonography (CTC), an examination tailored to evaluate for colorectal polyps and masses. 2 What is the adenoma-carcinoma sequence? The adenoma-carcinoma sequence refers to a series of…
1 Identify the parts of the colon (numbers 1 through 8) labeled in Figure 26-1 . For the answer, see the figure legend. 2 What are haustra? The longitudinal muscle layer of the colon is divided into three thick bands,…
1 What are the general indications for routine computed tomography (CT) and magnetic resonance imaging (MRI) of the upper gastrointestinal (GI) tract? General indications for routine abdominopelvic CT or MRI evaluation of the upper GI tract include: Assessment of patients…
1 What organs are studied during an upper gastrointestinal (GI) series? The esophagus, stomach, and duodenum are studied. The radiologist evaluates the morphology and motility of these organs. 2 What organs are studied during a pharyngoesophagogram? The radiologist evaluates the…
1 What is a “flat plate” of the abdomen? Flat plate is a historical term that refers to a past method of radiography when radiographs were recorded on flat plates of glass coated with an emulsion sensitive to x-rays. This…
1 What is the radiographic appearance of an endotracheal tube (ETT), and where is it optimally placed? An ETT usually appears as a faintly radiopaque tube with a thin, densely radiopaque line along its length, and its position should be…
1 Describe the normal pleural anatomy and physiologic features. The pleural space is a potential space that contains 2 to 10 mL of pleural fluid between the visceral and parietal pleural layers that essentially represents interstitial fluid from the parietal pleura…
1 Describe the anatomy of the mediastinum. The mediastinum is located centrally within the thorax between the pleural cavities laterally, the sternum anteriorly, the spine posteriorly, the thoracic inlet superiorly, and the diaphragm inferiorly. It is usually divided into anterior,…
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