PHY16 Mechanical Scanning Methods

Mechanical Scanning Methods Recording of ultrasound B-images of a simple specimen with two ultrasound probes of different frequencies using a computer-controlled scanner Using a computer-controlled scanner, ultrasound B-images of a simple specimen are recorded using two ultrasound probes of different frequencies. The image quality of the B-images is analyzed with regard to focus zone, resolution and possible artifacts. Keywords: Ultrasound echography, A-image, B-image, resolution, image artifacts To obtain a B-image with an ultrasound transducer, the transducer or the sound beam must be moved along the desired cutting line. Compared to a hand-held scanning procedure, mechanical and electronic scanning methods offer better image quality due to good resolution and freely selectable line density. Due to the low frame rate, however, electronic multi-element scanners are used for real-time images and moving structures. By using ultrasound probes of different frequencies in combination with