Swansea Radiology teaching site Helping Students to identify illness through X-rays

Introduction to the Abdominal Radiograph

Questions

Question 1:  T        F  
Erect abdominal radiographs are routinely used to diagnose pneumoperitoneum      
Riglers Sign describes the appearance of free gas beneath the diaphragms in a pneumoperitoneum      
If there is a small amount of free gas present in a pneumoperitoneum it is more likely to be seen under the right hemidiaphragm than the left on a plain radiograph      
A CT scan can be a useful test in equivocal cases of pneumoperitoneum      
Chilaiditi's syndrome is a cause of pneumoperitoneum      

Question 2:  T        F  
Bowel folds do not usually cross the whole bowel lumen in large bowel obstruction      
The large bowel can dilate to a maximum of 4cm to 5cm      
Pseudoobstruction and large bowel obstruction can be difficult to differentiate between on plain radiographs      
The most common cause of large bowel obstruction is a tumour      
If the ileocaecal valve is incompetent, dilatation of the small bowel is unlikely to develop if the large bowel is obstructed      
 

 

 

 
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