氯沙坦肾显像是一种较新的诊断rvh的无创伤性方法，具有一定的灵敏度和准确性。
The losartan renography is a relatively new non-invasive method for diagnosing RVH, with definite sensitivity and specificity.
目的：本文旨在建立一种利用孕妇外周血中分选出的胎儿有核红细胞进行无创伤性产前诊断的有效方法。
Object: The purpose of this paper is to establish a effective method using fetal nucleated red blood cells form peripheral maternal blood for non-invasive prenatal diagnosis.
医学影像诊断是医学无创伤性诊断的主要方法之一。
Diagnosis by medical image is one of the main methods of none wound diagnosis.
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