A patient's abdomen (alimentary canal) can be examined by X-ray after administering which one of the following metal salts in the patient's meal?
- A. Barium sulphate ✓
- B. Barium chloride
- C. Strontium sulphate
- D. Magnesium chloride
Correct Answer: A. Barium sulphate
Explanation
Barium sulphate (BaSO_4) is highly insoluble and opaque to X-rays, making it an excellent radiocontrast agent for medical imaging of the gastrointestinal tract (Barium meal).
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