测量白内障手术中晶状体乳化能的量热法。

IF 2.6 3区 医学 Q2 OPHTHALMOLOGY
Dr Rosa Braga-Mele, Satish Yalamanchili, Sarah Makari, Guangyao Jia
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引用次数: 0

摘要

目的:本研究的目的是确定在白内障手术中以焦耳为单位传递到眼睛的超声(US)能量,焦耳是国际通用系统(SI)的能量单位。这种SI能量测量单位允许在各种美国模式,超声乳化系统和其他应用之间进行比较。设置:实验室。设计:实验室内超声乳化能量耗散模型。方法:使用量热法测量能量,将美国机头、尖端和套筒用适配器固定在装有0.5 g水的测试室中。热电偶测量水温的上升。每种超声方式的超声功率以10%至100%的增量进行测试。结果:在扭转和纵向模态中都观察到高重复性,正如每个功率水平的变异系数小于0.5所表明的那样,并且整个测试的标准偏差幅度很低(根据超声功率水平,扭转模态为0.020 J/s至0.149 J/s,纵向模态为0.036 J/s至0.150 J/s)。三阶多项式在超声能量和功率级之间表现出强烈的非线性相关性,R2值较高(>0.99)。结论:量热超声能量测量方法能更好地了解眼内总能量。以焦耳为单位测量超声乳化术的总能量,可以采用标准化的方法比较不同平台的总能量,并作为评估和改善临床结果的潜在临床相关指标。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Calorimetric Method for Measuring Phacoemulsification Energy Delivered During Cataract Surgery.

Purpose: The purpose of this study was to determine the ultrasound (US) energy delivered to the eye during cataract surgery in Joules, a universal System Internacional (SI) unit of energy. This SI energy unit of measurement allows for comparison among various US modalities, phacoemulsification systems and other applications.

Setting: Laboratory.

Design: Experimental laboratory phacoemulsification energy dissipation model.

Methods: A calorimetric method of energy measurement was used, with a US handpiece, tip, and sleeve were held in place by an adaptor into a test chamber holding 0.5 g of water. Thermocouples measured the water temperature rise. The ultrasound power was tested in 10% increments from 10% to 100% with each ultrasound modality.

Results: High repeatability was observed in both the torsional and longitudinal modality, as indicated by a coefficient of variation less than 0.5 for each power level and the low standard deviation magnitude across the tests (0.020 J/s to 0.149 J/s in the torsional modality and 0.036 J/s to 0.150 J/s in the longitudinal modality, depending on ultrasound power levels). Third order polynomials demonstrated strong and non-linear correlations between ultrasound energy and power levels as indicated by high R2 values (>0.99).

Conclusion: A calorimetric ultrasound energy measurement method provides greater insight into the total energy in the eye. Measuring total phacoemulsification energy in Joules allows for a standardized way to compare total energy across variable platforms and to be used as a potentially more clinically relevant proxy for assessing and improving clinical outcomes.

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来源期刊
CiteScore
5.60
自引率
14.30%
发文量
259
审稿时长
8.5 weeks
期刊介绍: The Journal of Cataract & Refractive Surgery (JCRS), a preeminent peer-reviewed monthly ophthalmology publication, is the official journal of the American Society of Cataract and Refractive Surgery (ASCRS) and the European Society of Cataract and Refractive Surgeons (ESCRS). JCRS publishes high quality articles on all aspects of anterior segment surgery. In addition to original clinical studies, the journal features a consultation section, practical techniques, important cases, and reviews as well as basic science articles.
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