Mo-Tc发生器中母体Mo是______核素,子体Tc是______核素。
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电子俘获衰变核素I发射的______,可用于核素治疗,I也广泛用于______中。
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每37MBq(1mCi)的放射性药物锝在注射给药时,Mo的含量不能超过______。
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理想的单光子发射断层显像(SPECT)所用的放射性核素应是单纯发射____或____射线,即____,而且最好是____核素。
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Mo(t=67h)→Tc(t=6.02h)→Tc(t=2×105y)→Ru是____之一。
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Tc-PYP心肌显像对于急性心肌梗死的探测灵敏度取决于梗死后显像的时间,通常在胸痛发生后4~8小时即可出现阳性,5日内持续显影,_________小时阳性率最高,2周左右转为阴性。
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PET检查必须使用能够产生___________的超短半衰期核素制备的显像剂,这类显像剂引入人体之后,根据该显像剂的特定__________,按照一定的规律,在人体内分布,且随时间发生一定变化。
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骨骼显像的原理是_______________________从血液中获取Tc标记的磷酸盐等特异的使骨骼显像。
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由于受母体雌激素的影响,女性新生儿出生后可发生______、______及______,这些都是正常生理现象,短期内可______。
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Mo-Tc发生器中母体Mo是______核素,子体Tc是______核素。
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妊娠是_____和_____在母体内发育成长的过程。
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人工放射性核素用反应堆和加速器生产,包括核素发生器所用的______。
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114.Mo(u)lded depth is measured from the ______.
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Mo Yan made a speech at the Nobel Banquet in the Stockholm City Hall to accept the Nobel Prize in 2012, and his speech is ______
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Mo Yan made a speech at the Nobel Banquet in the Stockholm City Hall to accept the Nobel Prize in 2012, and his speech is ______
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Suppose Mo Yan, the Nobel laureate for Literature, is going to deliver a speech in your university. Then his speech is ______
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符号MO (F)中,角标0表示______,若没有角标O,则M(F)______。
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Suppose Mo Yan, the Nobel laureate for Literature, is going to deliver a speech in your university. Then his speech is ______
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If you want to inform your audience about the artistic features of Mo Yan’s novels, you would most probably arrange it in ________ order.
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放射性核素与稳定核素在______方面不同,放射性核素能自发地在其核衰变过程中发出射线,能够有效地被相应的______所检测到,可对标记的物质进行精确的定性、定量及定位的研究。
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【填空题】符号MO (F)中,角标0表示______,若没有角标O,则M(F)______。
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放射性核素示踪技术的应用,在揭示______的本质、阐明______的物质基础、______的变化规律以及疾病发生的原因和药物的作用机制等方面,发挥了极为重要的作用。
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Scientists are pushing known technologies to their limits in an attempt to ________mo
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99Mo-99Tcm核素发生器母子体达到平衡后,母体核素活度(A1)和子体核素活度(A2)之间关系有()。
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25Cr1Mo耐热钢的预热温度一般是________