Ultrasound and color Doppler study of the carotid
arteries was done:
RT. CCA
|
RT. ICA
|
RT. ECA
|
LT. CCA
|
LT. ICA
|
LT. ECA
|
|
Normal PSV (reference) cms./sec
|
< 100
|
54-88
|
77-115
|
<100
|
54-88
|
77-115
|
PSV
Cms/sec.
|
97
|
47
|
70
|
68
|
53
|
74
|
EDV
End diast. vel. (cms./sec.)
|
46
|
28
|
16
|
25
|
32
|
12
|
ICA/CCA PSV ratio (normal= <2)
|
||||||
% of stenosis
|
Nil.
|
nil
|
nil
|
nil
|
nil
|
Nil
|
PLAQUE APPEARANCE
|
Nil
|
nil
|
Nil
|
nil
|
nil
|
Nil
|
IMT (intima medial thickness). Normal= <0.9 mm.
|
1.0 mm.
|
0.7 mm.
|
RT. VERTEBRAL ART.
|
LT. VERTEBRAL ART.
|
|
PSV (cms./sec)
|
||
DIRECTION
|
Antegrade
|
Antegrade
|
OPINION:
USG scan suggests – No evidence of stenosis in carotid arteries,
vertebral arteries of both sides.
Normal intima-medial thickness seen in carotid arteries.
Normal flow seen in carotid and vertebral arteries.
SUGGEST: clinical correlation and follow up.
CT or MRI angiography may be done to confirm these findings.
REFERENCE:
CRITERIA FOR CAROTID STENOSIS :
PSV:
· Normal: ICA PSV <125 cm/s and
no plaque or intimal thickening is visible.
· <50% stenosis: ICA PSV <125 cm/s and
plaque or intimal thickening is visible.
· 50-69% stenosis: ICA PSV is 125-230 cm/s and
plaque is visible.
· >70% stenosis to near occlusion: ICA PSV
>230 cm/s and visible plaque and lumen narrowing are seen
well tabulated
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