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Main Paths of Brain Fibers in Diffusion Images Mixed with a Noise to Improve Performance of Tractography Algorithm-Evaluation in Phantom | ||
| Journal of Biomedical Physics and Engineering | ||
| مقالات آماده انتشار، اصلاح شده برای چاپ، انتشار آنلاین از تاریخ 11 اردیبهشت 1401 اصل مقاله (1.49 M) | ||
| نوع مقاله: Original Research | ||
| شناسه دیجیتال (DOI): 10.31661/jbpe.v0i0.2108-1387 | ||
| نویسندگان | ||
| Alireza Shirazinodeh1؛ Hadis Faraji2؛ Sam Sharifzadeh Javidi1؛ Amir Homayoun Jafari3، 4؛ Mohammadreza Nazemzadeh4، 5؛ Hamidreza Saligheh Rad* 4، 6 | ||
| 1PhD Candidate, Department of Medical Physics and Biomedical Engineering, Medicine School, Tehran University of Medical Sciences, Tehran, Iran | ||
| 2MSc, Research Center for Molecular and Cellular Imaging Advanced Medical Technologies and Equipment, Tehran University of Medical Sciences | ||
| 3PhD, Research Center for Biomedical Technologies and Robotics (RCBTR) Tehran University of Medical Sciences, Tehran, Iran | ||
| 4PhD, Department of Medical Physics and Biomedical Engineering, Medicine School, Tehran University of Medical Sciences, Tehran, Iran | ||
| 5PhD, Research Center for Molecular and Cellular Imaging Advanced Medical Technologies and Equipment, Tehran University of Medical Sciences, Tehran, Iran | ||
| 6PhD, Quantitative Medical Imaging Systems Group, Research Center for Molecular and Cellular Imaging, Tehran University of Medical Sciences, Tehran, Iran | ||
| چکیده | ||
| Background: Some voxels may alter the tractography results due to unintentional alteration of noises and other unwanted factors. Objective: This study aimed to investigate the effect of local phase features on tractography results providing data are mixed by a Gaussian or random distribution noise. Material and Methods: In this simulation study, a mask was firstly designed based on the local phase features to decrease false-negative and -positive tractography results. The local phase features are calculated according to the local structures of images, which can be zero-dimensional, meaning just one point (equivalent to noise in tractography algorithm), a line (equivalent to a simple fiber), or an edge (equivalent to structures more complex than a simple fiber). A digital phantom evaluated the feasibility current model with the maximum complexities of configurations in fibers, including crossing fibers. In this paper, the diffusion images were mixed separately by a Gaussian or random distribution noise in 2 forms: a zero-mean noise and a noise with a mean of data. Results: The local mask eliminates the pixels of unfitted values with the main structures of images, due to noise or other interferer factors. Conclusion: The local phase features of diffusion images are an innovative solution to determine principal diffusion directions. | ||
| کلیدواژه‌ها | ||
| Diffusion Tractography؛ Diffusion Magnetic Resonance Imaging؛ Features؛ Gaussian Distribution؛ Local Phase؛ Noise؛ Feasibility Studies؛ Brain | ||
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آمار تعداد مشاهده مقاله: 106,028 تعداد دریافت فایل اصل مقاله: 156 |
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