主要研究者 meaning in English

pi principal investigator
principle investigator, pi
principle investigator， pi

Patients report deciding positively or negatively about the trial in some measure at the time of meeting and talking with the principal investigator
因为病人需要开会时一定程度上决定对试验的看法是赞同还是反对，病人还需要直接与主要研究者交谈。
Have the principal investigator present to meet the patient and family , as well as other staff with whom the patient will interact ; this initial contact should neither be hurried nor cursory
让主要研究者和将要与患者打交道的工作人员到场接见患者及其家属，这种最初的接触不应该匆忙和草率。