( ( Ultrasound imaging ) ( ( is ( performed ( using ( a ( high ( frequency ( linear ( array transducer ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (JJ Ultrasound) (NN imaging)) (VP (VBZ is) (VP (VBN performed) (S (VP (VBG using) (NP (DT a) (JJ high) (NN frequency) (JJ linear) (NN array) (NN transducer)))))) (. .)))
Ultrasound imaging is performed using a high frequency linear array transducer.
(ROOT (S (NP (NP (NNP Ultrasound)) (, ,) (NP (DT a) (JJ diagnostic) (NN technology)) (, ,)) (VP (VBZ uses) (NP (NP (JJ high-frequency) (NNS vibrations)) (VP (VBN transmitted) (PP (IN into) (NP (NP (DT any) (NN tissue)) (PP (IN in) (NP (NN contact))))) (PP (IN with) (NP (DT the) (NN transducer)))))) (. .)))