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问题 单项选择题

K空间周边区域的数据主要决定

A．图像的矩阵
B．图像的信噪比
C．成像的速度
D．图像的解剖细节
E．图像的对比

答案

参考答案：D

解析： 愈靠近K空间周边的MR信号所含的空间信息越多，图像的解剖细节显得越细。

填空题

妊娠合并急性肾盂肾炎病人，应选用对胎儿影响较小的广谱抗生素抗感染，治疗最少维持______周，且维持每日尿量在______ml以上。
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单项选择题

Future Computer Trends:
The components of a PC will be built into the (6) and large plasma or electroluminescent flat panel display hanging on a partition wall will act as both a (7) and videophone display.

A. desk B. monitor C. built D. mouse-driven

A high resolution, touch sensitive LCD (8) into desktop will allow pan-based pointing and data input. In the home, meanwhile, computers will become as ubiquitous as TVs.
Computer interfaces will be far friendlier than (9) graphical user interfaces (GUI) of today. Computers will use "human interfaces" based on multimedia.
RISC microprocessors will finally obliterate the ever thinning gap between workstations and PCs. Similar advances in nonvolatile flash memory will lead to the replacement of magnetic (10) disks with electronic "silicon disks".
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