本論文主要是利用成大醫院的飛利浦磁振造影系統提供數據資料，並利用MATLAB軟體進行數據的重組以及分析。
磁振造影系統能夠提供基本的切面流速資料，但是人體為一個三維的結構，所以重組過後的三維模型更能夠幫助醫生清楚的判斷。我們透過MATLAB所開發出的程式將原先多層切面的2維流速資料進行影像重組使之成為3維模型，再進行影像濾波、流速分析、壓力梯度分析與壁面剪應力分析等。

MR image has been further developed over the past few decades. With its nonradioactive and non-invasive it is widely used for disease detection. Nowadays we are enabled to obtain higher spatial resolution data. With higher quality data we allow a more thorough assessment of cardiovascular diseases. PC-MRI can provide three-dimensional velocity data at different times. Since these data contain complete space and time information we can quantitatively analysis on aorta. This study mainly uses MATLAB software for data processing and make a further analysis. In this study we will have investigation about relative pressure distribution and wall shear stress.

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