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In an early pregnancy of approximately 6 weeks, fetal age can be estimated by measuring

A. a) From nose to tail.
B. b) From crown to rump.
C. c) Width of head.

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In an inversion recovery T1-weighted image, tissues with short, medium, and long T1 relaxation times will have low T1 contrast between each other when TI is:

A. ) short, around 10 milliseconds.
B. ) long, around 3 seconds.
C. ) both A and B.

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The diagnosis of lung tumours with CT imaging methods is routinely used due to:

A. a) the small difference in density between the lungs and the tumours
B. b) the large contrast between low density, air-filled lung tissue and solid lung tumour masses
C. c) the absence of other imaging modalities to diagnose tumours

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Which contrast agent is used routinely during a Coronary CT angiogram?

A. Gadolinium
Barium Sulfate
C. Iodine

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The CT values in the Hounsfield Unit(HU) scale are proportional to the measured attenuation coefficient μ of any tissue, scaled by the attenuation coefficient of water. The HU values for water and air are respectively:

A. -1000 and 0
B. 0 and -1000
C. 0 and -5000

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In an early pregnancy of approximately 6 weeks, fetal age can be estimated by measuring

A. a) From nose to tail. B. b) From crown to rump. C. c) Width of head.

In an inversion recovery T1-weighted image, tissues with short, medium, and long T1 relaxation times will have low T1 contrast between each other when TI is:

The diagnosis of lung tumours with CT imaging methods is routinely used due to:

Which contrast agent is used routinely during a Coronary CT angiogram?

The CT values in the Hounsfield Unit(HU) scale are proportional to the measured attenuation coefficient μ of any tissue, scaled by the attenuation coefficient of water. The HU values for water and air are respectively:

A. a) From nose to tail.
B. b) From crown to rump.
C. c) Width of head.