X-ray contrast medium comprising barium and xanthan gum for examination of large intestine and small intestine

摘要

This invention provides an X-ray contrast medium for examination of the large and the small intestine comprising an aqueous suspension containing 15 to 35 w/v % of barium sulfate and 0.6 to 0.15 w/v % of xanthan gum, wherein when the barium sulfate concentration is in the range of 15 to 20 w/v %, the amount of xanthan gum used is in the range of 0.3 to 0.6 w/v %; when the barium sulfate concentration is in the range of 20 to 30 w/v %, the amount of xanthan gum used is in the range of 0.2 to 0.5 w/v %; and when the barium sulfate concentration is in the range of 30 to 35 w/v %, the amount of xanthan gum used is in the range of 0.15 to 0.4 w/v %, and wherein, in each case, the higher the barium sulfate concentration is, the smaller the amount of xanthan gum used is; and the lower the barium sulfate concentration is, the larger the amount of xanthan gum used is.