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Urology General > Imaging > Flashcards

Imaging Flashcards

1
Q

how to ensure XR safety

A

.

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2
Q

mechanism of diagnostic USG

A

.

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3
Q

IVU phases

A

plain
nephrogram
pyelogram
pre post compression

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4
Q

Gy

Sv

unit

A

absorbed dose J per kg

effective dose

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5
Q

background radiation dose to fetus during pregnancy

A

1mGy

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6
Q

what is Hounsfield unit

A

0

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7
Q

mechanism of DECT

A

dataset
software
color coded

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8
Q

uric acid stone on DECT

A

red

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9
Q

CTU

what phases and timing?

A

30s
80 to 100s
8 to 10min

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10
Q

PET scan

mechanism

A

radiolabelling

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11
Q

Bone scan

mechanism

A

3 to 4hrs

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12
Q

68Ga 18F

half life
method of production

A

68min 109min

generator cyclotron

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13
Q

what is PSMA

A

.

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14
Q

what is Lutetium
half life
mean path length

A

6.7d

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15
Q

what is MRI

A

proton magnetisation

alignment

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16
Q

what is T1W

what is T2W

A

relaxation and relignment into longitudinal plane

transverse plane

17
Q

what is mpMRI

A

functional sequences

18
Q

what is DWI

A

Brownian motion of water moelcules

19
Q

what is b-value in MRI

A

diffusion weighting

20
Q

When to prefer mpMRI over bpMRI

A

4

21
Q

PROMIS
what is it
results

A

paired-cohort confirmatory study

NPV 89%

22
Q

PRECISION
what is it
results

A

noninferiority study
csCA 12% more
insigificant 13% less

23
Q

MRI first study
what is it
results

A

paired diagnostic study
only systematic miss 8%
only target miss 5%

24
Q

Proportion of csCA according to PIRADS

3 v 4 v 5

A

10
60
90

25
Q

how to ensure MRI safety

A

3

26
Q

what is renal scintigraphy

A

.

27
Q

Half life of 99m-Tc

A

6hr

28
Q

radiation risk (Sv)
MAG3:
DMSA:

A

0.4mSv

1 - 3mSv

29
Q

DMSA
what images are acquired
when

A

A, P, L R PO

3-4hr

30
Q

what are O’Reilly curves

A

.

31
Q

what is Whitaker test

what is the cut-off values for the pressure gradient

A

1973
pressure/perfusion study
< 15; > 22
Equivocal 15 - 22

32
Q

what is DEXA scan

A

.

33
Q

Frequency of TRUS probe

A

7.5MHz

34
Q

Frequency of abdominal USG probe

A

3.5MHz

35
Q

Frequency of high-resolution micro USG

A

29MHz

ExactVu

36
Q

what is mpUSG?

A

greyscale
shearwave elastography
CEUSG

37
Q

mpUSG
Advantages
Disadvantages

A

0.07mm (microUSG)

Urology General (13 decks)

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