Using a priori structural information from magnetic resonance imaging to investigate the feasibility of prostate diffuse optical tomography and spectroscopy: a simulation study.

Li C; Liengsawangwong R; Choi H; Cheung R

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Using a priori structural information from magnetic resonance imaging to investigate the feasibility of prostate diffuse optical tomography and spectroscopy: a simulation study.

机译：使用来自磁共振成像的先验结构信息来研究前列腺扩散光学层析成像和光谱学的可行性：模拟研究。

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Implementation of diffuse optical tomography (DOT) for prostate cancer is challenging because the prostate is a deep-seated organ. We investigated whether diffuse optical tomography (DOT) and spectroscopy could be applied to monitor the physiology of prostate cancer using a small probe that could be placed endorectally. We manually segmented the prostate, the intraprostatic tumor, and the rectum using data from endorectal magnetic resonance imaging. These structures were reconstructed and meshed with tetrahedral finite elements in three dimensions. A 2 x 4 cm probe that has ten sources and 52 detectors were placed to face the anterior wall of the rectum in our simulation. Optical properties of the organs were obtained from the literature in the near infrared regime. Diffusion approximation was used to simulate photon migration with finite element method. Five wavelengths were used to simulate tissue absorption with realistic water, oxy- and deoxyhaemoglobin concentrations in the prostate. We combined aglobal search based on genetic algorithm with gradient-driven local search methods to fit the simulated data. Our results suggest that the optical properties and the concentrations of the chromophores of the prostate and the prostate cancer can be reliably recovered from the measurements using an endorectal probe. Prostate DOT is worth further investigation for clinical application.

机译：由于前列腺是一种深部器官，因此对前列腺癌实施扩散光学层析成像（DOT）具有挑战性。我们调查了是否可以使用可以放置在直肠内的小探针将漫射光学层析成像（DOT）和光谱学应用于监测前列腺癌的生理学。我们使用来自直肠内磁共振成像的数据手动分割前列腺，前列腺内肿瘤和直肠。这些结构被重建并与三维的四面体有限元啮合。在我们的模拟中，将一个具有10个光源和52个探测器的2 x 4 cm探头面对着直肠的前壁放置。器官的光学性质是从文献中获得的近红外状态。扩散近似用于有限元方法模拟光子迁移。使用五个波长模拟前列腺中实际水，含氧和脱氧血红蛋白浓度的组织吸收。我们将基于遗传算法的全局搜索与梯度驱动的局部搜索方法相结合，以拟合模拟数据。我们的结果表明，可以使用直肠内探针从测量中可靠地恢复前列腺和前列腺癌的光学性质和发色团的浓度。前列腺DOT在临床上值得进一步研究。

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《Medical Physics》 |2007年第1期|共9页
作者
Li C; Liengsawangwong R; Choi H; Cheung R;
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正文语种 eng
中图分类基础医学;
关键词
Algorithms; Diffusion Magnetic Resonance Imaging; Image Interpretation; Computer-Assisted; 算法; 图像解释; 计算机辅助; 前列腺; 前列腺肿瘤;

机译：Algorithms;Diffusion Magnetic Resonance Imaging;Image Interpretation;Computer-Assisted;算法;图像解释;计算机辅助;前列腺;前列腺肿瘤;

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1. Using a priori structural information from magnetic resonance imaging to investigate the feasibility of prostate diffuse optical tomography and spectroscopy: a simulation study. [J] . Li C, Liengsawangwong R, Choi H, Medical Physics . 2007,第1期

机译：使用来自磁共振成像的先验结构信息来研究前列腺扩散光学层析成像和光谱学的可行性：模拟研究。
2. Simulation study of magnetic resonance imaging-guided cortically constrained diffuse optical tomography of human brain function [J] . David A. Boas, Anders M. Dale Applied Optics . 2005,第10期

机译：磁共振成像引导皮质约束弥散光学层析成像的仿真研究
3. Simulation study of magnetic resonance imaging-guided cortically constrained diffuse optical tomography of human brain function [J] . David A. Boas, Anders M. Dale Applied optics . 2005,第10期

机译：磁共振成像引导皮质约束弥散光学层析成像的仿真研究
4. Improving diffuse optical tomography with structural a priori from fluorescence diffuse optical tomography [C] . Wenjuan Ma, Feng Gao, Linjing Duan, Biomedical applications of light scattering VI. . 2012

机译：利用荧光扩散光学层析成像的先验结构改进扩散光学层析成像
5. Concurrent diffuse optical tomography, spectroscopy and magnetic resonance imaging of breast cancer. [D] . Ntziachristos, Vasilis. 2000

机译：乳腺癌的并行漫射光学层析成像，光谱学和磁共振成像。
6. A Simulation Study of the Variability of Indocyanine Green Kinetics and Using Structural a priori Information in Dynamic Contrast Enhanced Diffuse Optical Tomography (DCE-DOT) [O] . Mehmet Burcin Unlu, Ozlem Birgul, Gultekin Gulsen -1

机译：在动态对比增强扩散光学层析成像（DCE-DOT）中吲哚菁绿色动力学变异性和结构先验信息模拟研究
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机译：通过磁共振成像，磁共振波谱和正电子发射断层扫描在Novem抗肿瘤药物试验中早期检测神经纤维瘤病1型脑肿瘤生长和治疗反应

Using a priori structural information from magnetic resonance imaging to investigate the feasibility of prostate diffuse optical tomography and spectroscopy: a simulation study.

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