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Ct Review Quick > Quick > Flashcards

Quick Flashcards

1
Q

Bun

A

8-25 mg/dl

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2
Q

Creatinine

A

0.6-1.7 mg/dl

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3
Q

Glomerular filtration rate(Gfr)

A

95-120 ml/min/1.73 m2

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4
Q

eGFR

A

> 60

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5
Q

Prothrombin time (pt)

A

10-14sec

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6
Q

Partial thromboplastin time (ptt)

A

20-40sec

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7
Q

INR

A

0.9-1.3

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8
Q

D dimer

A

Less than 500 mg/ liter of fibrin equivalent units

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9
Q

1 rad=

A

1 rem

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10
Q

1 gy=

A

1000 rad

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11
Q

1 sv=

A

100 rem

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12
Q

Max effective dose

A

20 mSv per year no more than 50 mSv a year

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13
Q

Ct annual dose

A

0.15 rem or 1.5 mSV

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14
Q

Normal heart rate

A

60-100 bpm

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15
Q

Normal bp

A

120/80

Systolic / diastolic

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16
Q

Normal temps

A

97-99 oral

  1. 5-98.5 axillary
  2. 5-99.5 rectal
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17
Q

Pulse

A

70-100 bpm adult

95-119 bpm child

100-180 bpm infant

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18
Q

Respiration rates

A

12-20 adult

15-30 child

25-50 infant

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19
Q

Hepatic arterial phase

A

20-40 sec

20
Q

Portal venous phase

A

60-90 sec

21
Q

Head exam

A

Dose- 100 ml

Delay- up 5 mins

No oral

22
Q

Neck exams

A

Dose -100 ml

Rate- 3ml/sec

Delay- 35 sec

No oral

Saline?- reduces streaks in subclavian

23
Q

Chest exam

A

Dose - 100 ml

Rate- 3 ml/ sec

Delay- 30 sec

No oral

24
Q

Abdomen exams

A

Dose - 75-100 ml

Rate- 2-4 ml/sec

Delay-

Kidneys - 80-90 sec

Liver- 70-80 sec

Pancreas- 50-60

Oral contrast used

25
Q

Pelvis exam

A

Dose - 100 ml

Rate- 2-3 ml/sec

Delay- few mins

Oral contrast used

26
Q

Dose measurement for contrast

A

2ml per kilogram body weight

27
Q

Kidney phases

A

Corticomedullary - 30-40 sec( optimal renal cortex and veins)

Nephrographic- 70-90 sec( difference between renal cortex and medulla)

Excretory- 3 mins after injection ( contrast in calyces, ureter,bladder)

28
Q

Bone window

A

Ww- 2500

Wl- 350

29
Q

Soft tissue windows

A

Ww- 160

Wl- 40

30
Q

Standard windows

A

Ww- 300

Wl- 40

31
Q

Circle Willis exam

A

100 ml @ 4-5 ml/sec

24 sec delay

32
Q

P wave

A

Atrial contraction

33
Q

T wave

A

Ventricular relaxation ( complete diastole)

34
Q

Qrs wave

A

Ventricular contraction

35
Q

R wave

A

Highest amplitude and best for gating

36
Q

Ww up——- contrast?

A

Down

37
Q

Ww down——-contrast?

A

Up

38
Q

Wl down——-image brightness

A

Up

39
Q

Wl up ——— image brightness?

A

Darker image

40
Q

Slice thickness formula( mdct)

A

Thickness of beam
_____________________
Total number rows of detectors

41
Q

In plane spatial resolution formula

A

Reconstruction fov
___________________
Number of pixels alone each direction of image matrix

42
Q

Pancreas biphasic delays

A

25-30 sec arterial

60-70 portal venous

43
Q

Liver biphasic delays

A

30 secs arterial

70 sec portal venous

44
Q

Spleen delay

A

75-85 secs

45
Q

Pediatric patient contrast formula

A

1ml per lb body weight

46
Q

Pixel range modern ct system

A

-1024 hu to + 3071 Hu

47
Q

Iv angle

A

20-45

Ct Review Quick (1 decks)

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