题目内容

In which direction does an electromagnetic wave propagate?

A. a) The same as the electric field.
B. b) Opposite to the magnetic field.
C. c) Perpendicular to the electric and magnetic field.
D. d) Sinusoidally.

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MIP rotational reconstructions rotate

A. clockwise.
B. anticlockwise.
C. either way, you can't tell.

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A MIP reconstruction is used to:

A. visualize radio-opaque structures that are spread across a number of imaging slices.
B. create a 3D projection of a CT volume.
C. display the minimum values in a dataset

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In the final step of back projection for a 3 by 3 block of CT data with 4 projections, what number is each voxel divided by to obtain the final result matching the original data?

A. 3
B. 4
C. 5

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Generally, increasing the number of projections through an object during a CT acquisition:

A. Decreases resolution.
B. Increases resolution.
C. Does not affect resolution.

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In which direction does an electromagnetic wave propagate?

A. a) The same as the electric field. B. b) Opposite to the magnetic field. C. c) Perpendicular to the electric and magnetic field. D. d) Sinusoidally.

MIP rotational reconstructions rotate

A MIP reconstruction is used to:

In the final step of back projection for a 3 by 3 block of CT data with 4 projections, what number is each voxel divided by to obtain the final result matching the original data?

Generally, increasing the number of projections through an object during a CT acquisition:

A. a) The same as the electric field.
B. b) Opposite to the magnetic field.
C. c) Perpendicular to the electric and magnetic field.
D. d) Sinusoidally.