Caltech ultrasound technique can selectively kill cancer cells

Researchers at Caltech have devised a new approach to fight cancer using ultrasound. The technique uses low-intensity pulses of ultrasound and has been shown to selectively kill cancer cells while leaving normal cells unharmed. The scientists say that high-intensity bursts of ultrasound can heat tissue, killing cancer cells and normal cells in the target area. The new research uses low-intensity …