1. The tissue in the eye's cornea may opacify and the patient may go blind.

2. Cerene white frits are lead-free and do not contain zirconium silicate as the opacifying agent.

3. It is helpful to use oral and intravenous contrast material to opacify loops of bowel and vascular structures.

4. Proper imaging factors of DSA and superior images can be helpful to opacify small AVS of CHL.

5. It is helpful to use oral and intravenous contrast material to opacify (and identify) loops of bowel and vascular structures.