The only nuclear medicine procedure i know for imaging the pituitary gland, a rather exotic one, ist I-123 IBZM (iodobenzamide) SPECT in prolactinomas. in general, pituitary diseases are investigated with MRI. but Tc-99m MIBI can visualise the parathyroid glands.
Excessive use of magnesium supplements can be toxic. The upper limit -- the highest dose a person can take -- of magnesium supplements is: 65 mg/day for children ages 1-3. 110 mg/day for children ages 4-8. 350 mg/day for adults and children ages 9 and up.
1 For example, the instructions could say: âAdults and teenagersâ650 to 1000 milligrams (mg) every 4 to 6 hours as needed.â This DOES NOT mean that you can take 1000 mg every 4 hours! 2  Because the maximum dose for an adult is 4 grams per day, you can take either 650 mg every 4 hours or 1000 mg every 6 hours.