This formula is not exact: It assumes the current density is totally uniform in the conductor, which is not always true in practical situations. However, this formula still provides a good approximation for long thin conductors such as wires.
Deferasirox is used in the treatment of transfusional iron overload in people with thalassemia. Chelation therapy is used as a treatment for metal poisoning, including acute mercury, iron (including in cases of thalassemia), arsenic, lead, uranium, plutonium and other forms of toxic metal poisoning.
The Bottom Line. Chelation therapy is a treatment for heavy metal poisoning: iron, mercury, arsenic, and lead. Some people give chelation therapy for other conditions such as cardiovascular disease, autism, and Alzheimer's. This exposes patients to risks without benefit.helation therapy as a treatment for autism is based on the erroneous belief that mercury in childhood vaccines is a cause of autism. This belief arose when it was noted that 1) the number of cases of autism was growing and 2) the number of recommended childhood vaccines was increasing.