For example , a dual - headed camera can be used with heads spaced 180 degrees apart , allowing two projections to be acquired simultaneously , with each head requiring 180 degrees of rotation .
Multi-headed gamma cameras can provide accelerated acquisition .
A dual - headed camera can be used with heads spaced 180 degrees apart , allowing two projections to be acquired simultaneously , with each head requiring 180 degrees of rotation .
Multi-headed gamma cameras can provide accelerated acquisition .