Quatech Audio/Video Capture USB 2.0 Especificaciones descargar pdf (Pagina 385)

z.one ultra and z.one ultra sp OPERATOR MANUAL 17-3

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PAL Phase Alternating Line: A video standard format setting used in a number of

different countries worldwide. See also NTSC.

Power Doppler A Doppler imaging mode, displayed in a 2D format, using color to visualize the

presence and volume of blood flow in a wide range of flow states.

POT Programmed Orientation Text: Palette of pre-created text annotation values (Left/

Right, Sag/Cor, Prx/Mid/Dist, etc.) that can be selected by the Operator for quick

on-screen annotation on the ultrasound images.

PRF Pulse Repetition Frequency: A measurement of the rate at which ultrasound

transmit beams are triggered and sent into the body, in the various operating

modalities (PW, Color, B-Scan).

PW Pulsed Wave mode: A Doppler recording of blood flow velocities in a range

specific area along the length of the beam.

Retrospective Retrospective imaging: A functional operation on the z.one ultra where

pre-processed image data (from internal Cine memory) is recalled, with the

capability to perform extensive image processing (gain, etc.) that is normally

reserved only for live images on most other manufacturers ultrasound systems.

ROI Region Of Interest: In Color mode, the targeted area within the B-mode image

where acquisition of blood flow information will be targeted. The size, shape and

location of this area is selected by the user, and delineated on the display by a

green graphical border overlay.

RLE Run-Length Encoding: An industry standard protocol used for compressing of

color and black-white image files, to reduce their size for minimizing storage

requirements and/or maximizing file transfer rates.

Skinline A location within the B-mode (2D) image, on the display, that corresponds to the

skin/transducer interface.

TI Thermal Index: The ratio of total acoustic power to the acoustic power required to

raise tissue temperature by 1°C under defined assumptions.

TIB Thermal Index in Bone: Thermal index where the ultrasound beam passes

through soft tissue and a focal region in the immediate vicinity of bone.

TIC Thermal Index in Cranial bone: Thermal index where the ultrasound beam passes

through bone (in the skull) at the entrance to the body.

TIS Thermal Index in Soft tissue: Thermal index where the ultrasound beam passes

through bone at the entrance to the body

Transducer Often commonly referred to as a “probe.” A device that transforms mechanical

energy to electrical energy (during transmit cycle), and vice-versa (during the

receive cycle). Ultrasound transducers contain piezoelectric elements, which

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Quatech Audio/Video Capture USB 2.0 Especificaciones Pagina 385