【单选题】【消耗次数：1】
MRI自旋回波序列T1加权像上肾皮、髓质之间信号强度的差异即形成皮髓质分辨是由于
①
肾皮质含较多自由水，信号较髓质低
②
肾皮质含脂肪成分，信号较髓质高
③
肾髓质含较多自由水，信号较皮质高
④
肾髓质含脂肪成分，信号较皮质高
⑤
肾皮、髓质之间存在化学位移伪影
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相关题目
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肾上腺素和去甲肾上腺素都是由髓质分泌的
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髓质激素的化学本质是类固醇
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went
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go
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will go
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would go
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worked/ wouldn’t have failed
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torn
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fragments
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pieces
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bits
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slices
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were canceled
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had been canceled
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having canceled
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Being disgraced
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Disgraced
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Disgracing
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She was disgraced
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bribe
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corrupt
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award
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hasty
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instant
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prompt
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rapid
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specific
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extraordinary
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abrupt
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abnormal
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exhausted
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unhealthy
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upset
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