Watson E E, Stabin M G, Davis J L, Eckerman K F
Oak Ridge Associated Universities, Tennessee.
J Nucl Med. 1989 Dec;30(12):2002-11.
Several therapeutic and diagnostic techniques involve injection of radioactive material into the peritoneal cavity. Estimation of the radiation dose to the surface of the peritoneum or to surrounding organs is hampered by the lack of a suitable source region in the phantom commonly used for such calculations. We have modified the Fisher-Snyder phantom to include a region representing the peritoneal cavity which may be employed to estimate such radiation doses. A geometric model is described which is coordinated with the existing organ regions in the phantom. Specific absorbed fractions (derived by Monte Carlo techniques) for photon emissions originating within the cavity are listed. Photon S-values for several radionuclides which have been administered intraperitoneally are shown. Dose conversion factors for electrons irradiating the peritoneal cavity wall, from either a thin plane or volume source of activity within the cavity, are also given for several nuclides.
几种治疗和诊断技术涉及将放射性物质注入腹腔。由于在通常用于此类计算的体模中缺乏合适的源区域，因此难以估计腹膜表面或周围器官的辐射剂量。我们对费舍尔 - 斯奈德体模进行了修改，使其包含一个代表腹腔的区域，可用于估计此类辐射剂量。描述了一种与体模中现有器官区域相协调的几何模型。列出了源自腔内的光子发射的特定吸收分数（通过蒙特卡罗技术得出）。展示了几种经腹腔给药的放射性核素的光子S值。还给出了几种核素从腔内薄平面或体积活度源照射腹膜腔壁的电子剂量转换因子。
