Mri Registry Review

Front 1

Blood flow that slows to a point of immobility is known as what type of flow?

Back 1

Stagnant flow

Front 2

The type of MRA that uses gradient echo pulse sequences and gradient moment nulling to enhance flow is known as:

Back 2

TOF MRA

Front 3

At a field strength of 1.0 tesla

Back 3

the approximate T1 relaxation time for water is what?

Front 4

Blood flow that travels in the same direction in which the slices are acquired is known as what type of flow?

Back 4

Co-current flow

Front 5

Which of the following is the pulse sequence that is used most commonly?

Back 5

Spin echo

Front 6

The type of pulse sequence that fills all lines of K space per TR is known as what?

Back 6

Echo planar

Front 7

Blood flow velocity is measured in what type of unit?

Back 7

cm/sec

Front 8

The process that uses mathematical conversions to calculate the amplitude of individual frequencies is known as ______

Back 8

Fast fourier transformation

Front 9

The flow phenomenon that is characterized by the contrast differences between fresh flowing nuclei entering a slice and stationary tissue within that slice is known as what?

Back 9

Entry slice phenomenon

Front 10

When image matrix is increased

Back 10

spatial resolution______

Front 11

In a T1 weighted image

Back 11

tissues with short T1 relaxation times produce what type of signal?

Front 12

When echo time is increased

Back 12

signal to noise ratio _______

Front 13

When the direction of blood flow is opposite the direction in which slices are acquired

Back 13

the effects of entry slice phenomenon

Front 14

Typical peak velocities of the ascending aorta are usually within what range?

Back 14

150-175 cm/sec