目的：探讨16层螺旋CT肾脏皮质早期扫描及血管成像在肾癌定性诊断及术前评估中的价值。
Purpose:To discuss the value of16-slice spiral CT contrast enhanced early corticomedullary phase scanning and CT angiography(CTA)in diagnosis and preoperative evaluation of renal cell carcinoma.
随着超声波扫描的广泛使用，人们越来越多地发现这样的情况：妊娠早期扫描发现了孪生胎，后来却消失了。
And the widespread use of ultrasonic scanning means that, increasingly often, twins are spotted in early scans and subsequently vanish.
CT 扫描对于检测注射液的泄漏最为有用，这可能是驱出的早期阶段。
CT scans were mostly useful for detecting leakage of injectate, which may be the early phase of dislodgment.
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