Conformal heating using scanned 1-D phased array for external ultrasound hyperthermia

The feasibility of one-dimensional phased array transducer with mechanical scanning to produce a conformal heating for external ultrasound hyperthermia was evaluated. For the configuration of this system, numbers of focal spots were distributed within the target volume. To achieve the goal of conformal heating, an algorithm was introduced to calculate the power weighting for each field pattern to produce a heating volume conformal to the shape of the target volume. Simulation results showed that rather high cure rate in target volume with less damage rate in normal tissue can be obtained for target volumes with different shapes