Department of Radiological, Technology, Faculty of Medical Technology, Teikyo University, 2-11-1 Kaga, Itabashi-ku, Tokyo, 173-8605, Japan.
Department of Radiology, Saiseikai Yokohamashi Tobu Hospital, 3-6-1 Shimosueyoshi, Tsurumi-ku, Yokohama, Kanagawa, 230-0012, Japan.
Radiol Phys Technol. 2021 Sep;14(3):336-344. doi: 10.1007/s12194-021-00631-5. Epub 2021 Jul 24.
We aimed to compare the measurement and simulation data of bone scintigraphy of a chest phantom using a Monte Carlo simulation to verify the accuracy of the simulated data. The SIM bone phantom was enclosed using 300 kBq/mL of technetium-99 m (Tc) to represent the bone tumor and 50 kBq/mL of Tc to represent normal bone. Projection data were obtained using single-photon emission computed tomography (SPECT). Simulated projection data were constructed based on CT data. The contrast ratio, recovery coefficient (RC), % coefficient variation (CV), and power spectrum density (PSD) of each part were calculated from the reconstructed data. The contrast ratio and RC were equal between the actual and simulated data. Higher % CV values were noted for soft tissue than for normal bone. The PSD was equal for all frequency band ranges. Our results prove the utility of the Monte Carlo simulation for verifying various data using phantoms.
我们旨在比较使用蒙特卡罗模拟对胸部体模骨闪烁成像的测量和模拟数据，以验证模拟数据的准确性。SIM 骨体模使用 300kBq/mL 的锝-99（Tc）来表示骨肿瘤，使用 50kBq/mL 的 Tc 来表示正常骨。使用单光子发射计算机断层扫描（SPECT）获得投影数据。模拟投影数据基于 CT 数据构建。从重建数据中计算出每个部分的对比比、恢复系数（RC）、%变异系数（CV）和功率谱密度（PSD）。实际数据和模拟数据的对比比和 RC 相等。软组织的 % CV 值高于正常骨。在所有频带范围内 PSD 相等。我们的结果证明了蒙特卡罗模拟在使用体模验证各种数据方面的实用性。
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