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Файл:Ординатура / Хирургия / Библиотека им академика М.И. Перельмана / Книга_5820_Библиотеки_им_академика_М_И_Перельмана.pdf
Image Protocol for Cerebrovascular Duplex Scanning n 470
3. Longitudinal B-Mode image of the right
middle common carotid artery.
Labeled: SAG RT MCCA
4. Spectral waveforms from the right middle
common carotid artery with peak systolic and
end diastolic velocities measured.
Labeled: RT MCCA
5. Longitudinal B-Mode image of the right distal
common carotid artery.
Labeled: SAG RT DCCA
Image Protocol for Cerebrovascular Duplex Scanning n 471
6. Spectral waveforms from the right distal common carotid artery with peak systolic and end
diastolic velocities measured.
100
50
cm/s
Labeled: RT DCCA
PART VII
Image Protocol for Cerebrovascular Duplex Scanning n 472
7. Longitudinal B-Mode image of the right
carotid bulb (bifurcation).
Labeled: SAG RT BIFURCATION
8. Spectral waveforms from the right carotid bulb
with peak systolic and end diastolic velocities
measured.
100
50
cm/s
Labeled: RT BIFURCATION
9. Longitudinal B-Mode image of the right
proximal internal carotid artery at its origin.
Labeled: SAG RT PICA
Image Protocol for Cerebrovascular Duplex Scanning n 473
10. Spectral waveforms from the right proximal
internal carotid artery with peak and end
diastolic velocities measured.
80
60
40
20
cm/s
20
Labeled: RT PICA
PART VII
Image Protocol for Cerebrovascular Duplex Scanning n 474
11. Longitudinal B-Mode image of the right midsegment of the internal carotid artery.
Labeled: SAG RT MICA
12. Spectral waveforms from the right mid segment of the internal carotid artery with peak
and end diastolic velocities measured.
60
40
20
cm/s
20
Labeled: RT MICA
13. Longitudinal B-Mode image of the right distal
cm/s
internal carotid artery.
Labeled: SAG RT DICA
Image Protocol for Cerebrovascular Duplex Scanning n 475
14. Spectral waveforms from the right distal
internal carotid artery with peak and end
diastolic velocities measured.
50
Labeled: RT DICA
PART VII
Image Protocol for Cerebrovascular Duplex Scanning n 476
15. Longitudinal B-Mode image of the right
external carotid artery.
Labeled: SAG RT ECA
16. Spectral waveforms representing the right
external carotid artery flow pattern with peak
and end diastolic velocities measured.
80
60
40
20
cm/s
20
Labeled: RT ECA
17. Optional longitudinal B-Mode image of the
right vertebral artery in the midcervical
segment of the neck.
Labeled: SAG MIDCERVICAL RT VERT
Image Protocol for Cerebrovascular Duplex Scanning n 477
18. Spectral waveforms from the right midcervical segment of the vertebral artery with peak
systolic and end diastolic velocities measured.
60
40
20
cm/s
20
Labeled: MIDCERVICAL RT VERT
PART VII
Image Protocol for Cerebrovascular Duplex Scanning n 478
19. Longitudinal B-Mode image of the right vertebral artery at its origin from the
right subclavian artery.
Labeled: SAG PROX RT VERT
20. Spectral waveforms from the right proximal vertebral artery with peak systolic and end diastolic
velocities measured.
SCANNING TIP: Repeat the required images on
50
the left side beginning with a thorough survey.
NOTE: Even in the absence of visible signs of
cm/s
Labeled: PROX RT VERT
pathology, it is important to carefully image the
carotid bulb. It is thought that this area is most
prone to atherosclerosis because of shear forces
imposed on the arterial wall by the moving
blood and by the geometry of this region of
the bifurcation. Stenotic lesions often remain
asymptomatic until they produce a pressure-flow
gradient (reduce the diameter of the arterial
lumen by more than 60%). Lesser lesions may
be detected only with careful, thorough scanning
in the transverse and longitudinal planes.
Image Protocol for Cerebrovascular Duplex Scanning n 479
PART VII