RAD 372 CH18 CT/MRI

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35 Terms

1
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1

1st generation CT has how many detectors?

2
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pencil thin

1st generation CT has what kind of x-ray beam?

3
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head

1st generation CT does only what body part CT?

4
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5 minutes

1st generation CT for 1 slice takes how long?

5
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180

1st generation CT for 1 slice with how many degrees tube rotation?

6
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30+

2nd generation CT has how many detectors?

7
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fan shaped

2nd generation CT has what kind of x-ray beam?

8
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15 seconds

2nd generation CT takes how long for 1 slice?

9
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950

3rd generation CT has how many detectors?

10
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360

3rd generation CT tube rotates how many degrees?

11
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1

3rd generation CT each rotation gives how much slices?

12
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4800+

4th generation CT has how many detectors?

13
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continues

4th generation CT has how many detectors?

14
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fixed ring

4th generation CT has continues tube rotation with what?

15
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1 minute

4th generation CT takes how long to do an entire exam?

16
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helical or spiral scanning

slip ring allows tube to continuously rotated is what volume CT?

17
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multislice CT

what volume CT acquires multiple slices each tube rotation?

18
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CT numbers

what determines the degree of attenuation (linear attenuation coefficient)?

19
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0

what is the CT number for water?

20
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+1000

what is the CT number for cortical bone?

21
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-1000

what is the CT number for air?

22
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white

a CT number of +1000 appears what color?

23
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black

a CT number of -1000 appears what color?

24
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tesla

the magnetic strength of an MRI measured in what?

25
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1.5-3.0

an MRI magnet is approximately how much strength?

26
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hydrogen atoms

MRI primarily interacts with what in the human body?

27
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dark

a T1 MRI fluid is what color?

28
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bright

a T2 MRI fluid is what color?

29
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waiting room

what is zone 1 for a MRI suite?

30
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patient dress room/holding room

what is zone 2 for a MRI suite?

31
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computer room

what is zone 3, for a MRI suite?

32
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magnet

what is zone 4, for a MRI suite?

33
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quench

what is the term to turn off an MRI magnet?

34
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life or death threatening situations

when is the only time you should quench a magnet?

35
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MR safe

what kind of wheelchairs, chairs, oxygen tanks, gurneys are allowed in the MRI suite?