Barium is used for
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Checking Blood Group
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X-ray of alimentary canal
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X-ray of brain
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None of these
Barium sulfate is used as a radiopaque contrast medium for X-ray imaging of the gastrointestinal (alimentary) tract. Because barium is dense and absorbs X-rays, it allows the soft tissues of the esophagus, stomach, and intestines to be clearly visible on an X-ray.
To answer this question, you need to understand the application of barium in medical procedures.
Option A) Checking Blood Group - This option is incorrect because barium is not used for checking blood groups. Blood group testing is typically done using specific antibodies.
Option B) X-ray of alimentary canal - This option is correct because barium is commonly used in a procedure called a barium swallow or upper gastrointestinal (GI) series. In this procedure, a patient consumes a barium solution, which coats the lining of the alimentary canal (esophagus, stomach, and intestines). This allows the radiologist to visualize the structure and function of the digestive system using X-rays.
Option C) X-ray of brain - This option is incorrect because barium is not used for X-rays of the brain. Other contrast agents, such as iodine-based substances, are typically used for brain imaging.
Option D) None of these - This option is incorrect because barium is indeed used for X-ray imaging of the alimentary canal.
Therefore, the correct answer is B) X-ray of alimentary canal.