A-mode

A-mode

(mōd),
In diagnostic ultrasound, a one-dimensional presentation of a reflected sound wave in which echo amplitude (A) is displayed along the vertical axis and echo delay (depth) along the horizontal axis; the echo information derives from tissue interfaces along a single line in the direction of the sound beam.

A-mode

amplitude modulation in diagnostic ultrasonography. It represents the time required for the ultrasound beam to strike a tissue interface and return its signal to the transducer. The greater the reflection at the tissue interface, the larger the signal amplitude on the A-mode screen. See also B-mode, M-mode.

A-mode

(mōd)
diagnostic ultrasound A one-dimensional presentation of a reflected sound wave in which echo amplitude (A) is displayed along the vertical axis and time of rebound (depth) along the horizontal axis; the echo information is presented from interfaces along a single line in the direction of the sound beam.

A-mode

amplitude mode. See A-mode ultrasonography.
References in periodicals archive ?
Eye muscle area (EMA) was estimated by A-mode ultrasound scanning at 5 cm ventral to the dorsal point of the last thoracic vertebra.
The value of EMA estimated by the A-mode ultrasound scanner was adjusted for body weight (AEMA) on test day using the formula:
Although this control strategy works well, in future work we will simulate the SEMG-based 1-DOF prosthetic hand to collect the SMG from both the extensor and flexor with a multichannel A-mode ultrasound system for higher control accuracy.
In our previous work, we studied the relationships among A-mode thickness deformation SMG, SEMG, and wrist angle in wrist extension-flexion, and we also found that the A-mode SMG could be reliably extracted with a single-element ultrasound transducer by way of a one-dimensional CC tracking algorithm [7].
An A-mode SOU was not performed because of the patient's lack of cooperation.
One-dimensional A-mode imaging and two-dimensional B-mode imaging are the most common ultrasonographic modalities.
A-mode, B-scan, and a new device that performs an existing technology for an area of the body for which a code has been created, is reported according to the procedure performed.
At the time of testing, body weight was measured and ultrasound scanning on the back was made with A-mode (amplitude mode) scanners.
Although the two-dimensional SMG signal from ultrasound images is capable of detecting continuous muscle thickness changes, A-mode ultrasound, with a more portable and compact transducer, should be a less expensive and more practical alternative for detecting muscle thickness changes during contraction.
Resolution 22 Figure 3: A-Mode Ultrasound Image 24 Figure 4: B-Mode Ultrasound Image 26 Figure 5: M-Mode Ultrasound Image 27 Figure 6: Color Doppler Mode Ultrasound Image 28 Figure 7: 3D Ultrasound Image 30
announced that since the introduction of their A-mode diagnostic ultrasound system, Model SSD-2 in 1960, the cumulative production of diagnostic ultrasound systems, its mainstay product, has exceeded 200,000 units as of December 31, 2006 as a world first as a single brand.
In addition to TTL Auto Flash operation the SB-28DX also provides Manual flash operation, AA Auto Aperture Flash, non-TTL A-Mode and Repeating Flash Mode.