Effects of position and operator on high-frequency ultrasound scan quality.
Effects of position and operator on high-frequency ultrasound scan quality.
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DOI：
10.1016/j.iccn.2014.11.001
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发表时间：
2015-06
影响因子：
5.3
通讯作者：
Grap MJ
中科院分区：
文献类型：
--
作者：
Burk RS;Parker A;Sievers L;Rooney MB;Pepperl A;Schubert CM;Grap MJ
高频超声波可能会评估那些有压力溃疡风险的人。临床医生可以通过有限的培训获得图像。建议采用俯卧位进行骶骨扫描，但对危重病人可能不可行。这项研究使用多个操作员和不同的患者体位来调查图像质量。三名不同的研究人员使用20 MHz的超声系统，在50名志愿者的三个随机位置进行了骶骨扫描。采用一般线性模型和ANOVA随机效应模型，考察了操作符和位置对图像质量分级的影响，以及真皮厚度和真皮密度的测量。每个位置和操作人员的最佳扫描用于分析(N=447张图像)。图像评分因操作员而异(p=0.0004)，尽管所有操作员的平均评分均在3.5%或以上。俯卧位真皮厚度小于90°和60°侧卧位(p=0.0137，p=0.0003)。俯卧位的真皮密度低于90°或60°体位(p<；两者均为0.0001)。这些数据表明，所有操作员在所有位置上的总体扫描质量都是可以接受的。然而，侧卧体位和俯卧位之间的真皮厚度和真皮密度测量结果存在差异。
High-frequency ultrasound may evaluate those at risk for pressure ulcers. Images may be obtained by clinicians with limited training. The prone position is recommended for obtaining sacral scans but may not be feasible in the critically ill. This study investigated image quality using multiple operators and a variety of patient positions. Sacral scans were performed in three randomized positions in 50 volunteers by three different investigators using a 20 MHz ultrasound system. General linear models and ANOVA random effects models were used to examine the effects of operator and position on image quality rating, and measures of dermal thickness, and dermal density. The best scan for each position and operator was used for analysis (N=447 images). Image rating varied by operator (p=0.0004), although mean ratings were 3.5 or above for all operators. Dermal thickness was less for the prone position than in 90° or 60° side-lying positions (p=0.0137, p=0.0003). Dermal density was lower for the prone position than for the 90° or 60° positions (p<0.0001 for both). These data show that overall scan quality was acceptable in all positions with all operators. However, differences were found between side-lying positions and the prone for dermal thickness and dermal density measures.
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作者：
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2010-01-01
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