目的：探讨有益于诊断的磁共振伪影。
Objective: to detect the effects of MRI artifacts useful to diagnosis.
半环状伪影为MRVE主要存在的伪影。
And half circle artifact was the main artifact of MRVE in this series.
环转伪影是CT扫描系统常见故障之一。
运动伪影一直是冠脉成像的一个最大挑战。
Motion artifact constitutes the most important challenge to coronary artery imaging.
本文提出一种消除磁共振图像截断伪影的新方法。
A new method of truncation MR artifact reduction is proposed in this paper.
针对金属伪影，提出一种快速而稳定的校正方法。
In this paper, a fast method for metal artifacts reduction is proposed.
前言：目的：探讨磁共振伪影的成因及其处理方式。
Objective: To discuss the reason of MRI artifacts and its disposition.
本方法可以有效地剔除由截断伪影而引入的虚假边缘。
False edges due to truncation artifacts can be removed using this method.
金属伪影的校正已成为CT技术中的研究难点和热点。
Correction method of metal artifacts has become the hot and difficult issue of ct technique.
射线CT系统的成像质量往往受到金属伪影的严重影响。
X-ray computed tomography (CT) reconstructions are often limited by metal artifacts from corrupted data.
开始之前必须的HRCT的技术、定则、伪影作基本的了解。
A basic understanding of HRCT technique, protocols, and artifacts is necessary before beginning.
LDRD胸片运动伪影基本上不会对临床诊疗产生重要影响。
The motion artifacts in thoracic LDRD has no important influence in clinical diagnosis and therapy.
目的解决少数据投影图像重建中分辨率差、伪影严重等问题。
Objective To solve the problem of low resolution and more artifacts in image reconstruction from incomplete projections.
快速成像序列大大减少运动伪影，两种序列诊断结果没有差别。
Motion artifacts were significantly reduced with the fast sequence, and the final MRI diagnosis did not differ between the two sequences.
结论合理地应用流动伪影有助于颅内动脉瘤的诊断和鉴别诊断。
Conclusion a rational use of flow artifacts is helpful for the diagnosis and differentiation of intracranial aneurysms.
结果：钛合金内固定伪影的大小为内固定大小的2 ~3倍。
Results: the artifact size was 2-3 times that of the internal fixator.
方法随机抽取CR图像1000张，分析其中伪影的产生原因。
Methods1000pieces of CR image were selected randomly and the causes of artifact were analyzed.
这些伪影严重影响了图像的质量，给人们的判断带来极大困难。
These artifacts seriously influence image quality and bring huge difficulties for judgment.
本文提出一种适合于含有截断伪影磁共振图像的边缘检测新算法。
We propose a new edge detection algorithm suited to MR images with truncation artifact.
通过合理选择金属材料，合理选择成像序列和参数可以减轻伪影。
Artifacts can be alleviated by using proper metallic materials or choosing proper imaging sequence and parameters.
同时比较不同修复体产生伪影与磁场强度及扫描序列之间的关系。
To compare the relationship between the artifact of different fixed prosthesis and field strength, scanning sequence.
牙用固位钉、镍铬合金冠等材料在快速自旋回波图像上伪影减轻。
Artifacts produced by retention pin, nickel chromium crown and so on were less severe on fast spin-echo.
方法根据故障现象，将图像伪影分为规则伪影和不规则伪影两大类。
Methods Image artifact was classified two sorts such as regular artifact and irregular artifact by faults phenomenon.
本文提出了一种适合于含有截断伪影磁共振图像的边缘检测新算法。
In this paper, we propose a new edge finding technology to fit to MR images with truncation artifact.
本文就口腔金属修复物与磁共振伪影相互关系的研究进展作一综述。
In this paper, the research progress of the relationship between dental metallic prosthesis and MRI artifact is summarized.
基于MATLAB7.0编程对图像进行分析，计算伪影的面积占原像面积的比重。
The images were analyzed based on MATLAB7.0 programming to calculate the area proportion of the artifacts.
结论：选择最佳时相进行图像重建可以最大限度减轻心脏运动伪影，提高图像质量。
Conclusion: image reconstruction in the optimal phase can decrease the artifacts of cardiac motion as possible and improve the quality of images.
差分串扰的减小减少了描述受验者内部部分的重现数据的伪影，提高数据的诊断价值。
This reduction in differential crosstalk reduces artifacts in a reconstructing data descriptive of internal portions of a subject, which improves diagnostic value of the data.
差分串扰的减小减少了描述受验者内部部分的重现数据的伪影，提高数据的诊断价值。
This reduction in differential crosstalk reduces artifacts in a reconstructing data descriptive of internal portions of a subject, which improves diagnostic value of the data.
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