Disclosed is an organic piezoelectric material which has excellent piezoelectric characteristics and excellent handling properties. Also disclosed are an ultrasound transducer using the organic piezoelectric material, an ultrasound probe, and an ultrasound medical diagnostic imaging system. Specifically disclosed is an organic piezoelectric material which contains a base material that is formed from a resin, and a specific compound (1) that has at least one linking group selected from among specific linking groups. The organic piezoelectric material is characterized in that the relation shown below is satisfied when the CLogP values of the specific compound (1) and the base material are respectively represented by CLogP(1) and CLogP(base material). Relation: |CLogP(1)−CLogP(base material)|≦3.0.
本发明公开了一种具有优异压电特性和良好操作性的有机压电材料。还公开了使用该有机压电材料的超声波换能器、超声波探头和超声医学诊断成像系统。具体公开了一种有机压电材料,它包含由
树脂形成的基材料和具有至少一种特定连接基团的特定化合物(1)。该有机压电材料的特征在于当特定化合物(1)和基材料的CLogP值分别表示为CLogP(1)和CLogP(基材料)时,满足如下关系:|CLogP(1)-CLogP(基材料)|≦3.0。