Utility of compact ultrasound in a mass surgical selection program in Africa: experience of a sonologist at the MV Africa Mercy Hospital Ship's screening day. | LitMetric
Department of Radiology, Dartmouth-Hitchcock Medical Center, Lebanon, New Hampshire USA (R.D.H.); Geisel School of Medicine, Dartmouth University, Hanover, New Hampshire USA (R.D.H.); and MV Africa Mercy, Pointe Noire, Republic of Congo, West Africa (G.P.).
Published: February 2015
AI Article Synopsis
Article Abstract
Compact ultrasound (US) was introduced in an austere setting with no other available imaging for an annual mass surgical screening day. Compact US examinations were performed on 25 patients from more than 7000 potential patients, as deemed possibly useful by the screening surgeons. Of the 20 patients with recorded data, compact US was helpful in 14 of 20 as a decision-making tool, obviating computed tomography for preoperative planning. Compact US was helpful in most cases, saving resources (computed tomography), technologist time, and radiation risk in this select population.
The most common transducers used to generate ultrasound in medical applications are based on short electrical pulses applied to piezoelectric transducers and capacitive micromachined ultrasound transducers. However, piezoelectric transducers have a limited frequency bandwidth, defined by their physical thickness, and capacitive micromachined ultrasound transducers have poor transmission efficiency. The high frequency cutoff limits the spatial resolution of ultrasonic images.
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