For renal imaging and GFR studies, the patient receives an intravenous injection of 3 to 5 mCi (111-185 MBq) and the kidneys are imaged for 20 to 30 minutes. The GFR is calculated by a quantitative method using a combination of imaging and counting the radioactivity in serum and urine samples. Renal and brain perfusion studies use doses from 10 to 20 mCi (370-740 MBq). Both dynamic and static images are usually acquired for perfusion studies. For lung studies, 30 to 50 mCi (1.11-1.85 GBq) is placed in a closed, disposable nebulizer system. After 5 to 10 minutes of inhalation by the patient, the nebulizer is detached and patient images from various projections are obtained. Images are comparable to those obtained with xenon-133.

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Conquering Fear In The 21th Century

Conquering Fear In The 21th Century

The Ultimate Guide To Overcoming Fear And Getting Breakthroughs. Fear is without doubt among the strongest and most influential emotional responses we have, and it may act as both a protective and destructive force depending upon the situation.

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