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What is the primary reason to use compression?
What is the primary reason to use compression?A . Increase line densityB . Reduce the focal regionC . Improve the axial resolutionD . Adjust the contrast resolutionView AnswerAnswer: D Explanation: Compression in ultrasound imaging adjusts the range of grayscale displayed, affecting the contrast resolution. This function allows sonographers to enhance...
During 3-D volume acquisition, the quality of the images is most dependent upon which factor?
During 3-D volume acquisition, the quality of the images is most dependent upon which factor?A . Number of slices acquiredB . Power outputC . Rendering method utilizedD . Speed of post-processing image compressionView AnswerAnswer: A Explanation: During 3-D volume acquisition in ultrasound, the quality of the images is most dependent...
Which factor affects temporal resolution?
Which factor affects temporal resolution?A . Display depthB . Time gain compensationC . Overall gainD . Log compressionView AnswerAnswer: A Explanation: Temporal resolution refers to the ability of an ultrasound system to distinguish between events occurring closely in time. It is primarily affected by the frame rate, which is the...
Which target group is used to evaluate transverse distance measurement accuracy in this tissue-mimicking phantom image?
Which target group is used to evaluate transverse distance measurement accuracy in this tissue-mimicking phantom image? A . Option AB . Option BC . Option CD . Option DView AnswerAnswer: D Explanation: In the tissue-mimicking phantom image, Option D (blue box) is used to evaluate transverse distance measurement accuracy. Phantoms...
Which change can be made in order to avoid exceeding the Nyquist limit?
Which change can be made in order to avoid exceeding the Nyquist limit?A . Increase output powerB . Decrease output powerC . Increase pulse repetition frequencyD . Decrease pulse repetition frequencyView AnswerAnswer: C Explanation: To avoid exceeding the Nyquist limit and prevent aliasing in Doppler ultrasound, the pulse repetition frequency...
