Advanced Imaging Flashcards
This type of imaging merges x-ray with the computer to produce cross-sectional images
a. MRI
b. CT
c. Dx US
d. plain film radiograph
CT
This type of imaging takes cross-sections created by numerous projections taken from multiple angles
a. MRI
b. CT
c. Dx US
d. plain film radiograph
CT
List the 3 components of the CT Scanner
Gantry
operator console
computer
Which component of the CT scanner houses the x-ray rube, detectors and captures the x-ray?
a. gantry
b. operator console
c. computer
gantry
How are images taken for CT scans?
a. in slices
b. spinal scanning
c. vertically
d. none of the above
spiral scanning
This type of scanning leads to images in planes other than the axial or horizontal plane images
spiral scanning
What type of imaging represents radiodensites of various tissues/structures?
a. MRI images
b. CT images
c. Dx US
d. plain film radiograph
CT images
CT images are free of _
superimposition
This term is defined as something stacked on top of something else
superimposition
What is the correct patient positioning for viewing CT images?
a. prone
b. supine
c. standing
d. sitting
supine
What are two planes for the viewing position to look at CT images?
frontal plane
sagittal plane
The best uses for this type of imaging includes subtle/complex fractures, loose bodies in joint, spinal stenosis, osseous alignment
a. MRI
b. CT
c. Dx US
d. plain film radiograph
CT
What are the best uses for CT scans?
subtle/complex fractures
loose bodies in joint
spinal stenosis
osseous alignment
What are the advantages of CT scanning?
cost less than MRI
less claustrophobia
faster imaging
What are the disadvantages of CT scanning?
soft tissue differentiation
radiation exposure
Which imaging is faster?
a. CT scanning
b. MRI
CT scanning
This type of imaging uses radio frequency waves in a magnetic field interacting with tissues to produce information/signals
a. MRI
b. CT
c. Dx US
d. plain film radiograph
MRI
This type of imaging takes the information/signals/data collected relates to tissues re-emission of radio frequency while in the magnetic field
a. MRI
b. CT
c. Dx US
d. plain film radiograph
MRI
This type of imaging is data collected from a measure of energy emitted from tissue molecules after stimulation by radio waves
a. MRI
b. CT
c. Dx US
d. plain film radiograph
MRI
Energy emitted _ with various tissues which leads to tissue _
differs
differentiatoin
Both relate to realignment of tissue molecules with the magnetic field after radiofrequency wave has been turned off
T1 and T2 phenomena
This imaging measures energy released shortly after RF turned off
a. T1 imaging
b. T2 imaging
c. MRI imaging
d. CT scans
T1 imaging
This imaging measures energy released longer OR later after RF turned off
a. T1 imaging
b. T2 imaging
c. MRI imaging
d. CT scans
T2 imaging
T1 radiofrequency off and measuring is done _
quickly
T2 radiofrequency goes off and realigns with _ time
longer
This type of imaging is when tissues realigning fast image bright (fat), realigning slow image dark (water)
a. T1 imaging
b. T2 imaging
c. MRI imaging
d. CT scans
T1 imaging
This type of imaging is when tissues realigning fast image bright (water), realigning slow image dark (fat)
a. T1 imaging
b. T2 imaging
c. MRI imaging
c. CT scans
T2 imaging
What are the 3 components of the MRI scanner?
gantry
workstation
computer
This part of an MRI scanner houses the magnet, coils with radiofrequency and the table
a. gantry
b. workstation
c. computer
gantry
MRI images displayed in _ based on pulse sequenced used, T1 or T2
grayscale
MRI images can take slices in _ plane
any
transverse, sagittal, frontal
This type of view of an MRI image is as if you’re facing the patient
a. frontal
b. transverse
c. sagittal
frontal
This type of view of an MRI image is as if you are at the feet of the patient
a. frontal
b. transverse
c. sagittal
transverse
This type of view of an MRI image is as if you are looking at the patient from the right or left
a. frontal
b. transverse
c. sagittal
sagittal
MRI images are best for
variation in bone marrow for tumors/avascular necrosis
soft tissue detail - disk herniation/nerve root impingement
stages of neoplasm
This image is best for a variation in bone marrow for tumors/avascular necrosis, soft tissue detail - disc herniation/nerve root impingement, stages of neoplasm
a. MRI
b. CT
c. Dx US
d. plain film radiograph
MRI
MRI images take (shorter/longer) time to obtain
longer
What are the disadvantages of MRI images
does not image cortical bone well
longer time to obtain images
claustrophobia
cost - high
What are 2 contraindications for MRI imaging?
ferrous metals
claustrophobia
This type of imaging uses sound waves reflected off tissue interfaces to produce cross-sectional images
a. MRI
b. CT
c. Dx US
d. plain film radiograph
Dx US
What are the components of a Diagnostic Ultrasound?
pulser
transducer
scan converter
monitor
the _ produces the electrical energy sent through the _ and turns into a sound wave
pulse
transducer
What produces the vibration producing the sound wave?
a. pulser
b. transducer
c. crystal
d. scan converter
crystal
Dx US images are viewed as a _, oriented in the direction of the transducer/US beam, superficial to deep
slice
What are two ways to view Dx US images?
longitudinal
transverse
What is the clinical use of a Dx US?
image a variety of MS tissues under a variety of conditions
Dx US is best for
soft tissues
What are the advantages of Dx US?
low cost portable modifiable exams no hazard to patient differentiates tissue structure/architecture
What are the disadvantages of Dx US?
operator dependent
no bone penetration
does not cross air interface
obese
What type of imaging is good for seeing a variation in bone marrow for tumors/avascular necrosis?
a. MRI
b. CT scan
c. Dx US
d. plain film radiograph
MRI
What type of imaging is good for soft tissue detail disc herniation and nerve root impingement?
a. MRI
b. CT scan
c. Dx US
d. plain film radiograph
MRI
What type of imaging is good for seeing stages of neoplasm?
a. MRI
b. CT scan
c. Dx US
d. plain film radiograph
MRI
What type of imaging is good for seeing subtle/complex fractures?
a. MRI
b. CT scan
c. Dx US
d. plain film radiograph
CT scan
What type of imaging is good for seeing loose bodies in joint?
a. MRI
b. CT scan
c. Dx US
d. plain film radiograph
CT scan
What type of imaging is good for seeing spinal stenosis or narrowing?
a. MRI
b. CT scan
c. Dx US
d. plain film radiograph
CT scan
What type of imaging is the best for soft tissues?
a. MRI
b. CT scan
c. Dx US
d. plain film radiograph
Dx US
