Abstracts of Papers in Acoustical Science and Technology

摘要

This paper reviews the basic imaging methods available using ultrasonic diagnostic equipment, including the pulse-echo method, beamforming for improving image resolution, and harmonic imaging using the nonlinearity of ultrasonic waves. Further topics discussed include the use of the pulse Doppler method in blood flow measurement, and the differential diagnosis of benign and malignant tumor via the contrast echo method using microbub-bles. Of particular relevance, the characteristic ultrasound image features used to inform the diagnosis of pneumonia severity, which is important in planning the treatment of COVID-19 patients, are described. Finally, a bird's eye view of future trends in ultrasonic diagnosis is provided.