| 齐阿荣,王川,孙丽华,曹子龙,陈新.胸部双能X线摄影中运动伪影的影响因素[J].中国医学影像技术,2020,36(7):1080~1083 |
| 胸部双能X线摄影中运动伪影的影响因素 |
| Impact factors of motion artifacts in chest dual-energy X-ray radiography |
| 投稿时间：2019-07-22 修订日期：2020-01-16 |
| DOI：10.13929/j.issn.1003-3289.2020.07.035 |
| 中文关键词: X线 减影技术 放射摄影术,胸部 质量控制 |
| 英文关键词:X-rays subtraction technique radiography, thoracic quality control |
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| 中文摘要: |
| 目的 观察胸部DR双能减影图像运动伪影的好发部位，分析其影响因素。方法 分析128例胸部双能减影图像，观察运动伪影出现的位置，测量并比较伪影长度和宽度，分析心率与不同位置运动伪影的相关性。结果 128例胸部双能减影图像中，115例出现黑白条运动伪影，分别位于左心室段（87例，75.65%）、主动脉弓处（82例，71.30%）、右心缘（60例，52.17%）、心膈缘（42例，36.52%）、左心房耳肺动脉段（30例，26.09%）及上腔静脉处（27例，23.48%），在骨组织图像中更为明显；其中15例膈肌伪影明显，经呼吸训练后行第2次摄片，膈肌伪影减小或消失。其中左心室段、主动脉弓段、右心缘处运动伪影的平均长度及宽度差异均有统计学意义（F=4.59、3.46，P均<0.05）。心率与左心室段、主动脉弓段运动伪影均呈正相关（r=1.00、0.99，P均<0.05）。结论 心脏搏动及呼吸运动可致胸部DR双能减影图像出现运动伪影，多位于左心室段及主动脉弓段，且心率越快越易出现运动伪影。 |
| 英文摘要: |
| Objective To observe the predilection sites of motion artifacts on chest DR dual-energy subtraction images, and to analyze the impact factors. Methods Dual-energy subtraction chest images of 128 cases were analyzed. The position of motion artifacts were observed, and the length and width were measured and compared, and the correlations of heart rate and motion artifacts at different sites were analyzed. Results Among 128 cases of dual-energy subtraction chest images, 115 cases showed black-and-white striped motion artifacts, 87 (75.65%) at left ventricular segment, 82 (71.30%)at aortic arch segment, 60 (52.17%)at right cardiac margin, 42 (36.52%) at diaphragmatic margin, 30 (26.09%)at left atrial auricular pulmonary segment and 27 (23.48%) at superior vena cava. Statistical differences of the mean length and width of motion artifacts were found among left ventricular segment, aortic arch segment and right cardiac margin (F=4.59, 3.46, both P<0.05). Heart rate was positively correlated with motion artifacts at left ventricular segment and aortic arch segment (r=1.00, 0.99, both P<0.05). Conclusion Cardiac pulsation and breathing exercises can cause occurrence of motion artifacts in chest DR dual-energy subtraction images, mostly located at left ventricular segment and aortic arch segment. The faster the heart rate, the more obvious the motion artifacts. |
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