Nishi T
Department of Obstetrics and Gynecology, Arida City Hospital, Arida-shi, Wakayama, Japan.
Acta Obstet Gynecol Scand. 1997 May;76(5):409-13. doi: 10.3109/00016349709047820.
To compare magnetic resonance imaging with ultrasonography for the diagnosis of urinary tract abnormalities.
Two cases of multicystic dysplastic kidney, six cases of ureteropelvic junction obstruction, and one case of autosomal recessive polycystic kidney disease were diagnosed on antenatal ultrasonography and/or magnetic resonance imaging.
In case of multicystic dysplastic kidney and ureteropelvic junction obstruction, ultrasonography showed characteristic features of their diseases. Magnetic resonance imaging was insufficient to diagnose these diseases. In a case of autosomal recessive polycystic kidney disease, ultrasonography and magnetic resonance imaging were both useful to show characteristic features of this disease, and thus made it possible to make a correct diagnosis of the disease.
For a prenatal fetal diagnosis, it is necessary to observe both fetal anatomy and an evolution of the fetal abnormality. The above mentioned three types of urinary tract abnormalities changed their anatomic configurations and/or texture of urinary tracts as the pregnancies progressed. To observe these changes, the usefulness of ultrasonography is superior to that of magnetic resonance imaging for the present. Although ultrasonography and magnetic resonance imaging show fetal urinary tract abnormalities, these instruments should be used properly during the period of the pregnancy on case-by-case bases.
比较磁共振成像与超声检查在诊断泌尿系统异常方面的效果。
通过产前超声检查和/或磁共振成像诊断出2例多囊性发育不良肾、6例肾盂输尿管连接处梗阻及1例常染色体隐性多囊肾病。
对于多囊性发育不良肾和肾盂输尿管连接处梗阻，超声检查显示出其疾病的特征性表现。磁共振成像不足以诊断这些疾病。对于常染色体隐性多囊肾病，超声检查和磁共振成像均有助于显示该疾病的特征性表现，从而得以对该疾病做出正确诊断。
对于产前胎儿诊断，有必要同时观察胎儿解剖结构及胎儿异常情况的演变。上述三种泌尿系统异常会随着孕周增加而改变其解剖结构和/或尿路质地。为观察这些变化，目前超声检查的实用性优于磁共振成像。尽管超声检查和磁共振成像可显示胎儿泌尿系统异常，但在孕期应根据具体情况合理使用这些检查手段。
