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.
Over an 18-year period, French researchers determined that men with the highest blood levels of magnesium are 40 percent less likely to die of any cause than those with the lowest levels. Magnesium can make multivitamins too bulky, so add a 250 milligram (mg) pill from iherb.com or GNC to your daily regimen.