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核心技术专利：CN118964589B侵权必究

核心技术专利：CN118964589B侵权必究

J Can Assoc Radiol. 1980 Mar;31(1):26-9.

Depth-dosage distributions of pions and heavy ions are similar, but the dose fall-off near the range is much steeper for heavy ions compared to pions. 2. Radiation quality and hence biologic effects of heavy ion beams in the peak region depend only on peak width, whereas for pion beams because of fast neutrons from stars, the radiation quality may depend not only on peak width but also on beam size. 3. For neon and argon ions, the biologic effects of fractionated doses in proliferating cells are found to be more effective than for single doses. Such an effect was not observed for either fast neutrons or for pions. 4. Radiobiologically, pion beams are similar to helium and carbon ions.

介子和重离子的深度剂量分布相似，但与介子相比，重离子在射程附近的剂量下降要陡峭得多。2. 重离子束在峰值区域的辐射质量以及生物效应仅取决于峰值宽度，而对于介子束，由于星产生的快中子，辐射质量可能不仅取决于峰值宽度，还取决于束流尺寸。3. 对于氖离子和氩离子，发现增殖细胞中分次剂量的生物效应比单次剂量更有效。快中子或介子均未观察到这种效应。4. 从放射生物学角度看，介子束与氦离子和碳离子相似。

J Can Assoc Radiol. 1980 Mar;31(1):26-9.

Depth-dosage distributions of pions and heavy ions are similar, but the dose fall-off near the range is much steeper for heavy ions compared to pions. 2. Radiation quality and hence biologic effects of heavy ion beams in the peak region depend only on peak width, whereas for pion beams because of fast neutrons from stars, the radiation quality may depend not only on peak width but also on beam size. 3. For neon and argon ions, the biologic effects of fractionated doses in proliferating cells are found to be more effective than for single doses. Such an effect was not observed for either fast neutrons or for pions. 4. Radiobiologically, pion beams are similar to helium and carbon ions.

介子和重离子的深度剂量分布相似，但与介子相比，重离子在射程附近的剂量下降要陡峭得多。2. 重离子束在峰值区域的辐射质量以及生物效应仅取决于峰值宽度，而对于介子束，由于星产生的快中子，辐射质量可能不仅取决于峰值宽度，还取决于束流尺寸。3. 对于氖离子和氩离子，发现增殖细胞中分次剂量的生物效应比单次剂量更有效。快中子或介子均未观察到这种效应。4. 从放射生物学角度看，介子束与氦离子和碳离子相似。