Imaging options Flashcards
What is the most common data acqusition imaging option in which a single line of k-space is filled by data acquired from each slice before the TR period is repeated?
2D imaging
What type of imaging option where all data is acquired as a volume and no gap space?
3D imaging
During 3D data acquisition, when does slice encoding occur?
Post data acquisition
What slice order is an imaging option in which data is acquired from alternative slices through two seperate acquisitions?
Interleaving
A spatial saturation pulse is capable of saturating all tissues within a specified area through the use of an extra 90 degree pulse and a _________ transmission bandwidth
Broad
What type of flow is gradient moment nulling most efficient at rephasing?
Laminar flow (1st order flow)
When gradient moment nulling is applied during the acquisition of axial images, which gradient is used for flow compensation?
Slice Select gradient
When gradient moment nulling is applied during the acquisition of coronal or sagittal images, which gradient is used for flow compensation?
Frequency encoding gradient
What parameter determines the time between the 90 degree saturation pulse and the alpha pulse when applying chemical suppression technique?
SAT TR
What equation can be used to calculate the Sat TR needed when applying a chemical suppression technique?
TR/# of slices
During cardiac gating/triggering, motion is usually tracked using what device?
ECG or EKG
What component of the QRS complex is the utmost important?
The Q phase
What equation is used to calculate the length of one R to R interval
60,000ms / BPM
Thes short waiting period following each R phase is referred to as the
R phase delay
