医学影像学2教学课件电子教案全套课件.pptx

Belly;Section 1 Technology;;;;;;;;;;;;;;Chapter ２ Diagnosis of digestive tract radiography ;Plain film/screen ;;;;;;Contrast examination;Barium sulfate;;;;;;double contrast with gas and barium;;Low tension contrast of duodenum ;(2)Barium meal study : jejunum, ileum, ileocecum ;barium-infusion study：;;(3)double-contrast barium enema ;２ Angiography;;;;;Section 2 Observation and analysis of gastrointestinal radiology;;Esophagus;Three phases of esophageal peristalsis：Primary peristalsisSecondary peristalsisTertiary contractions;Normal esophageal:;;double-contrast study of normal esophagus，normal impressions of esophagus;Stomach;;;Mucosal folds;;Duodenum;;bulb of Duodenum;jejunum and ileum;;Barium meal image of jejunum and ileum;Normal ileocecal part;large intestine;filling image muscal image;;Basic radiographic appearance of diseases of alimentary tract ;1．Changes of contour;crater: contour protruding outward the lumen（gastric ulcer）;crater in the lesser curvature of the stomach;crater（en face view）: localized barium on the posterior wall of the body of stomach and radiating folds extend directly to the ulcer;crater on duodenal bulb;Diverticulum of the descending portion of duodenum ;（2）filling defect;Filling image（ supine position）：mass in the gastric antrum;Filling image（supine position）： leiomyoma of stomach fundus;2．change of mucous membrane and mucous fold;destruction of mucosal folds：esophageal carcinoma;flattening of mucosal folds：narrowing of the lumen of the gastric antrum with stomach wall ;fixation and mucosal grooves shallowing;thickening of mucosal folds: mucosal folds of the gastric antrum appear resembling Polypoid（Polypoid）;ulcer of duodenal bulb：crater （arrow） on the center of the duodenal bulb，edema zone surround and radiating folds extend to it ;erosive gastritis: areae gastricae enlarged and coarsened;3．Change of lumen : narrowing and dilatation;;4．Position and and mobility ;5．Abnormalities of gastrointestinal motility;;;;;Secti