Advanced Imaging Flashcards by Heather Stephens

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

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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

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List the 3 components of the CT Scanner

Gantry
operator console
computer

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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

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How are images taken for CT scans?

a. in slices
b. spinal scanning
c. vertically
d. none of the above

spiral scanning

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This type of scanning leads to images in planes other than the axial or horizontal plane images

spiral scanning

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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

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CT images are free of _

superimposition

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This term is defined as something stacked on top of something else

superimposition

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What is the correct patient positioning for viewing CT images?

a. prone
b. supine
c. standing
d. sitting

supine

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What are two planes for the viewing position to look at CT images?

frontal plane

sagittal plane

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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

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What are the best uses for CT scans?

subtle/complex fractures
loose bodies in joint
spinal stenosis
osseous alignment

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What are the advantages of CT scanning?

cost less than MRI
less claustrophobia
faster imaging

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What are the disadvantages of CT scanning?

soft tissue differentiation

radiation exposure

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Which imaging is faster?

a. CT scanning
b. MRI

CT scanning

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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

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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

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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

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Energy emitted _ with various tissues which leads to tissue _

differs

differentiatoin

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Both relate to realignment of tissue molecules with the magnetic field after radiofrequency wave has been turned off

T1 and T2 phenomena

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This imaging measures energy released shortly after RF turned off

a. T1 imaging
b. T2 imaging
c. MRI imaging
d. CT scans

T1 imaging

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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