Peroral contrast
Author:
Mikael Häggström [notes 1]
Contents
In projectional radiography and fluoroscopy
Choice of contrast
- Barium sulfate is generally used.
- An iodine-based contrast medium is used where there is a risk of aspiration or perforation, where barium may cause chemical inflammation.[1][2]
- However, 1-2% of oral iodine is absorbed in the gastrointestinal tract, and can potentially case a contrast medium reaction.[3] Also, it is more expensive than barium.
Dosage
- Iodine
Patient age | Iodine |
---|---|
Under 5 years | 11g |
5-10 years | 22g |
Adults | 33g |
The concentration in adults is typically around 350 mg of iodine per ml, but can be diluted to about 100mg/ml (especially for children that are under 10 kg or debilitated).[notes 2]
Examinations
In CT scan
Notes
- ↑ For a full list of contributors, see article history. Creators of images are attributed at the image description pages, seen by clicking on the images. See Radlines:Authorship for details.
- ↑ 370mg/ml for undiluted gastrografin:
- . AUSTRALIAN PRODUCT INFORMATION - GASTROGRAFIN (Sodium amidotrizoate / Amidotrizoate meglumine). Bayer. Retrieved on 2018-11-07.<
- . Gastrografin Dosage. Drugs.com.Medically reviewed on December 2, 2017.
References
- ↑ Hundemer GL, Kumar V, Vaduganathan M (2015). "Large-volume barium aspiration. ". Proc (Bayl Univ Med Cent) 28 (2): 183-4. PMID 25829647. PMC: 4365113. Archived from the original. .
- ↑ Dr Vikas Shah ◉ and Dr Jeremy Jones. CT luminal contrast. Radiopaedia. Retrieved on 2018-11-07.
- ↑ . Oral Contrast Policies. Yale School of Medicine. Retrieved on 2018-11-07.