Dynamic DR in the examination of the advantages of digestive medicine
At present, the clinical diagnosis of digestive diseases, X-ray examination of dynamic DR applications is still the preferred medical imaging technology. Although there are other advanced imaging techniques, such as CT, MRI and ultrasound, which show great advantages, X-ray examination has an irreplaceable clinical advantage in certain diseases. Although endoscopy has been hailed as the "gold standard" for the diagnosis of gastrointestinal mucosal diseases, it is a traumatic examination for patients, especially for middle-aged and young children. Ultrasound can not detect early gastric cancer. It is not sensitive to the small symptoms in the stomach, so the X-ray barium meal examination is the most suitable method for the examination of digestive diseases in a special population.
X-ray barium angiography (oral and enema) examination, divided into conventional esophagography, upper gastrointestinal angiography, and total gastrointestinal angiography. Conventional esophagography is suitable for the diagnosis of esophageal tumors, diverticulum, varicose veins, foreign bodies, inflammation, lesions of adjacent esophageal organs such as heart, aorta, mediastinum and the like. Esophageal hypotension double contrast angiography is suitable for early detection of esophageal tumors, inflammation, diverticulum and routine angiography. Conventional upper gastrointestinal angiography is suitable for any upper abdominal discomfort and gastrointestinal symptoms; suspected pancreatic cysts and pancreatic head cancer and other diagnostic tests. Gastric and duodenal hypotonic double contrast angiography is suitable for early gastric cancer, pancreatic head cancer, duodenal cancer and cholangiocarcinoma, and examination of suspicious cases of common gastrointestinal tract. Total gastrointestinal angiography is suitable for congenital dysplasia; chronic non-specific inflammation and tuberculosis examination of benign and malignant tumors of the digestive tract; observation of intestinal parenteral lesions and intestinal relationship, postoperative functional observation. Colonic enema is suitable for colonic tumor, polyp, granulomatous lesions, localized enteritis; ulcerative colitis; megacolon; diagnosis of colonic intussusception.
With the development of X-ray imaging technology, the emergence of visual DR-dynamic DR has enabled X-ray barium meal inspection technology to improve the precision diagnosis of digestive tract diseases.
The advantages of dynamic DR in digestive medicine are mainly reflected in the following aspects:
Dynamic DR imaging has a large format: 17×17 inches, which can be completed in one exposure for a wide range of imaging sites such as esophagus, stomach, small intestine, colon, etc., greatly reducing the radiation dose of patients;
Dynamic DR image clarity: Compared to traditional gastrointestinal machines (image intensifiers), spatial resolution can be increased by one to two times, and image quality is significantly improved;
Millisecond-level dynamic and static switching: In the perspective process, real-time spotting can realize millisecond-level dynamic and static image switching, especially in esophageal angiography, and quickly capture images of lesions;
Video save, real-time playback: with video save playback function, after the patient check is over, the patient can still be diagnosed by video playback, no need to repeat the check.
The following two cases are typical of using dynamic DR diagnosis to be more advantageous than other diagnostic methods.
First, esophageal achalasia
Axillary achalasia, also known as sputum sputum, giant esophagus, is due to esophageal dysfunction caused by neuromuscular dysfunction of esophageal and stenosis, causing insufficiency of the lower esophageal sphincter, food can not pass smoothly and stay, thus gradually reducing esophageal tension and peristalsis And a disease of esophageal dilation.
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