Procedimiento de cálculo de pérdidas por accesorios en la cubierta

Ultrasound is an inexpensive and ubiquitous tool that emits high-frequency sound waves (1-10MHz) through tissue and measures its reflection using piezoelectric sensors to characterize the acoustic properties of that tissue. While not traditionally used for lung imaging, recent studies suggest that ultrasound imaging is capable of detecting non-aerated areas and edematous regions of the lungs35_{. What is more, ultrasound imaging offers the}

dual advantages of using portable scanners and visualizing the changes in lung aeration in real-time. However, it also offers suffers from diagnostic error and poor specificity, though these disadvantages can be limited by properly training the operator as well as by developing probes that are specifically designed for lung ultrasound35_.

Another recently developed method for imaging the lungs is electrical impedance tomography (EIT), which uses several electrodes positioned around the chest to conduct a small alternating electrical current through the body in order to estimate the impedance across the thorax35_{. This impedance drastically changes in well-aerated areas during a}

respiratory cycle, thereby localizing such areas. EIT currently suffers from low spatial resolution. However, it offers tremendous potential as an imaging tool, since it is

inexpensive and can be used to obtain images in real-time. Information provided by EIT could potentially be used to adjust the ventilator strategy for each patient at point-of-care35_.

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