医学影像学专业英语消化系统 戚云杰 (1)

Normal imaging appearances
• esophagus • stomach • small intestine • large intestine
ຫໍສະໝຸດ Baidu
Barium swallow
How it is done?
Swallow baking soda crystals (to make gas) Drink the barium liquid The passage of barium is “screened” with x-ray (patient standing)
Barium studies
Contraindication
complete bowel obstruction perforation of gastrointestinal tract acute bleeding of gastrointestinal
tract
Barium/Contrast studies
barium study
4. Computed tomography
be highly accurate for prensence, site, size, local invasion and metastases of tumor
Ba swallow
Barium enema
Ba meal Ba follow through Small bowel enema
Stomach
A： gastric fundus B： gastric body C：gastric arch
D : gastric antrum E： duodenal ampulla
Stomach shape
Crest of ilium
steerhorn stomach、fishhook stomach、 cascade stomach、longitypical stomach Somatype and stress of the patient
Methods of imaging investigation
1. Abdominal X-ray (AXR)
Mainly used for acute abdomin
2. Fluoroscopy
serve as scout films prior to contrast studies
3. contrast examination
Spot X-ray films are taken
Barium swallow
Why gas?
To help distend the esophagus and produce double contrast effect (for better definition of
small mucosal abnormalities)
esophagus
mucosal relief mucosal relief
esophagus
Double contrast
esophagus
The third wriggling wave is usually seen beneath the level of aortal arch。
Wave-like or like saw tooth
Attention
combined fluoroscopy and spot films pay equal attention to morphology
and function lay equal stress on fluoroscopy and
touching
Normal and abnormal imaging appearances
esophagus
esophagogastric junction (cardia)
The shape is pentagon
Barium meal
How is it done?
Swallow baking soda crystals (to make gas) Drink the barium liquid lying down on a x-ray couch Patient is gently rolled around to coat the walls of the stomach and duodenum The stomach is “screened” using X-rays Spot films are then taken patient in different positions
esophagus
barium filling mucosal relief double contrast The third wriggling wave esophagogastric junction (cardia)
esophagus
barium filling barium filling
Digestive system
Yunjie Qi
Diagnostic imaging department of xuzhou medical college
Gastrointestinal tract
esophagus stomach small intestine large intestine
Barium studies
Barium studies
All utilize X-rays to image the bowel
“Screening” (fluoroscopy) is used to view the passage of barium through the bowel.
This is in “real-time” and is like a video. It is done intermittently throughout the examination. Images are shown on a monitor.
“Spot films” are x-ray films (radiographs) taken at specific times and of a specific area of the bowel