Anatomy
Hydronephrosis occurs within here
What are the kidneys?
Wrap will always appear in this direction
What is Phase?
The time interval between 90 degree RF Pulses or the time between the start of a pulse sequence and the beginning of the next pulse sequence
What is TR/Time of Repetition?
This Imaging technique allows for reduction in phase encoding steps resulting in faster scan times.
What is Parallel Imaging/Acceleration?
Should the pt report that they have an eye related foreign body. The pt is usually cleared to have the MRI with this exam
What is an X-ray of the Orbits?
The olecranon is the strongest part of this bone
What is the Ulna?
This artifact most likely is found in images with high contrast interfaces.
What is Gibbs/Truncation?
Whether in the C spine , T spine or L Spine a healthy intervertebral disc/disc space on T2 will appear???
What is bright?
In the MRI "triangle" Resolution, Time and this have to be taken into consideration in order to achieve adequate image quality.
What is SNR?
Arthrograms can be done to evaluate labral tears on two of these joints
What are the hip and shoulder joints?
When Imaging the ankle, it’s very important to include the base of this metatarsal.
What's the 5th?
This artifact is most common on 2D and 3D TOF..."don't close the curtain just yet" adjust your spacing/gap to solve it
What is venetian/stair step artifact?
The common use for this sequence is to evaluate small amounts/traces of blood or calcium. Other sequences may not be able to distinguish these structures. This pulse sequence also exploits the the loss in signal to better show us venous structures.
What is SWI/SWAN?
The gyromagnetic ratio of hydrogen at 1T is this
What is 42.58Mhz?
A pillcam is swallowed by the pt and able to take a video of the pt's bowels. MR scanning is discouraged due to this.
What is susceptibility?
Usually there this many vertebraes within the Thoracic Spine.
What is 12?
This artifact is when there is an interaction matter with an electrical field/component...more prevalent on 3T
What is dielectric effect?
This pulse sequence starts with a 180 degree RF pulse instead of a 90 degree RF pulse.
What is an inversion pulse/IR?
Partial Fourier allows for as little as half of reconstruction of this data
What is K-Space?
MR Elastography (MRE) allows estimation of the mechanical properties of tissue in response to compression or vibration. Applications for this exam is commonly used for this body part.
What is the Liver?
The Hamate is located within this joint
What is the wrist??
When two tissues are in close proximity and misregistration occurs resulting in signal intensity alterations. This artifact is called
What is chemical shift?
A spin-echo sequence using a long TR and long TE produces this type of weighted image
What is a T2?
The Bo in the Larmor equation represents this
fo = γ Bo
What is the field strength?
The amount of NAA (acetyl aspartate) can be evaluated in ppm with this type of imaging technique.
What is MR Spectroscopy?