儿童全身¹⁸F-FDG PET/CT有效剂量的临床研究 by 庞春兰, 关邵翔, 杨小春, 肖子正, 林晓平

“…结果全部3组患儿¹⁸F-FDG PET/CT的<italic>ED_TOTAL</italic>为（4.42～14.35）mSv，平均（9.37±2.21）mSv，其中，¹⁸F-FDG PET产生的有效剂量（<italic>ED_PET</italic>）为（2.76～6.79）mSv，平均（4.49±0.96） mSv，总CT有效剂量（<italic>ED_CT</italic>）为1.66～8.19 mSv，平均（4.88±1.63）mSv，其中全身CT有效剂量（<italic>ED_WBCT</italic>）为（1.66～6.69）mSv，平均（3.26±1.05）mSv。…”
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How long does carbon stay in a near-pristine central Amazon forest? An empirical estimate with radiocarbon by I. Chanca, I. Chanca, I. Chanca, I. Levin, S. Trumbore, K. Macario, K. Macario, K. Macario, J. Lavric, J. Lavric, C. A. Quesada, A. Carioca de Araújo, C. Quaresma Dias Júnior, H. van Asperen, S. Hammer, C. A. Sierra

“…The <span class="inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" id="M7" display="inline" overflow="scroll" dspmath="mathml"><mrow><mi mathvariant="italic">δ</mi><msub><mrow class="chem"><msup><mi/><mn mathvariant="normal">13</mn></msup><mi mathvariant="normal">C</mi></mrow><mtext>ER</mtext></msub></mrow></math><span><svg:svg xmlns:svg="http://www.w3.org/2000/svg" width="38pt" height="16pt" class="svg-formula" dspmath="mathimg" md5hash="a84556e7a28adc0442bd7db619ab3714"><svg:image xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="bg-22-455-2025-ie00005.svg" width="38pt" height="16pt" src="bg-22-455-2025-ie00005.png"/></svg:svg></span></span> showed a smaller variation, being <span class="inline-formula">−27.8</span> ‰ <span class="inline-formula">±</span> 0.3 ‰ in October 2019 and <span class="inline-formula">−29.0</span> ‰ <span class="inline-formula">±</span> 0.5 ‰ in December 2021. …”
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