More About Parabola. 1  The graph of any quadratic equation is a parabola.  All parabolas have an axis of symmetry and the point at which the axis of symmetry intersects the parabola is called the vertex of the parabola and the vertex lies half way between the focus and the directrix.
How much does ketamine therapy cost? In the US, doctors typically charge $400-800 per infusion. Thatâs a lot of money, but itâs consistent with the cost of similar procedures. Unfortunately, insurance doesnât cover ketamine therapy, so the patient must bear the full cost. Thatâs a serious problem since many lifelong sufferers are unable to work.
The initial six infusions cost $3,800, the beneficial effects of which last anywhere from 3 to 5 weeks for some patients, and up to 12 weeks for others. Patients return as needed for single boosters, which cost $600. Because the FDA has not approved ketamine for this use, insurance doesn't cover it.