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Provide a 8 pages analysis while answering the following question:

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Posted on 
October 25th, 2021
Home Uncategorized Provide a 8 pages analysis while answering the following question:

Provide a 8 pages analysis while answering the following question: Tutorials Paraphrasing. Prepare this assignment according to the guidelines found in the APA Style Guide. An abstract is required. &nbsp.

No specific position because there is no relationship between the positioning of data in the bottom left corner of the k-space and the image.

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Answer: No: 5

The k-space data needs to be acquired as echoes. When we apply gradient in any particular slice gradient, it dephases the transverse coherence quickly, eliminating any chance to receive data.

Answer: No: 6

The phase gradient is zero at this stage, and the center of the echo in the read direction directly corresponds to the center of k-space.

Answer: No: 7

A 180° pulse refocuses time-independent changes in transverse phase coherence. The difference in gradient dependent phase only occurs if the gradient is on. It does not depend on the total time for which the angle remains on or off. Reversing the rise and applying it to the sample refocus the phase coherence lost due to gradients.

Tutorial 3

Answer: No: 1

Fourier transformation determines the intensities and frequencies of the individual frequencies present in the acquired data. It is always expressed in terms of Fourier Sine transform and Fourier Cosine transform. Fourier transform analysis is also used to understand the evolvement of the quantum-mechanical system with time.

Answer: No: 2

Analog signals use electric currents and voltages for reproducing the data, whereas digital signals use binary data strings for the same purpose.

Answer: No: 3

Nyquist’s theorem states that the signal must be sampled equal to or greater than twice the signal’s frequency to define a sine curve’s frequency accurately. This theorem is used for the digitization of analog signals. Folding or aliasing results in detecting the sign outside the FOV that is being placed over the image. This change in detection occurs because the frequency of a signal calculated outside the defined FOV is always more significant than the sampling rate. Hence, this signal is placed over the movement of a lower frequency.

&nbsp.Figure 6.7 was acquired with a mid-range TE (100 ms), which gives a high signal for areas that have long T2 values. For example, CSF fluid and low motion for regions with short T2 values, such as grey matter. This is a typical T2 weighted image and gives good contrast.Figure 6.8 was acquired with a long TE (500 ms). In this figure, the signal is only obtained from areas with long T2 values, such as the CSF fluid. The signals from all other regions with shorter T2 values were reduced to zero.

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