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Diagnostic ultrasound ( PDFDrive )

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CHAPTER

27

Peripheral Vessels

Mark E. Lockhart, Heidi R. Umphrey, Therese M. Weber, and Michelle L. Robbin

SUMMARY OF KEY POINTS

• Key aspects of vascular Doppler imaging include

knowledge of anatomy and waveform morphology,

scanning technique, and attention to detail.

• Spectral Doppler velocity criteria can characterize stenosis

detected by gray-scale and color Doppler.

• Doppler evaluation of peripheral artery disease can provide

diagnostic information and enable surgical planning and

evaluation of bypass grafts.

• Extremity aneurysm and pseudoaneurysm have typical

Doppler indings similar to other areas of the arterial

system.

• Evaluation of the upper and lower extremity

venous system is primarily performed with

sonography.

• Differentiation of acute from residual or chronic deep

venous thrombosis (DVT) with imaging and clinical

parameters is often dificult.

• Controversial venous issues include clinical criteria for

treatment of DVT, when to recommend a follow-up

examination, calf vein evaluation, and two-point or focused

examination approach.

• Preoperative sonographic mapping of upper extremity and

thigh vessels assists surgical planning for placement of

hemodialysis arteriovenous istula (AVF) and grafts.

• Postoperative evaluation of hemodialysis AVF and grafts

with ultrasound aids the assessment of AVF maturation, as

well as evaluation for access stenosis, steal, thrombus,

and focal complications.

CHAPTER OUTLINE

PERIPHERAL ARTERIES

Sonographic Examination Technique

Stenosis Evaluation

Lower Extremity Arteries

Normal Anatomy

Ultrasound Examination and Imaging

Protocol

Peripheral Arterial Occlusion

Peripheral Arterial Stenosis

Aneurysm

Pseudoaneurysm

Arteriovenous Fistula

Lower Extremity Vein Bypass

Grafts

Upper Extremity Arteries

Normal Anatomy

Ultrasound Examination and Imaging

Protocol

Arterial Occlusion, Aneurysm, and

Pseudoaneurysm

Arterial Stenosis

Subclavian Stenosis

Thoracic Outlet Syndrome

Radial Artery Evaluation for Coronary

Bypass Graft

PERIPHERAL VEINS

Sonographic Examination Technique

Lower Extremity Veins

Normal Anatomy

Ultrasound Examination and Imaging

Protocol

Acute Deep Venous Thrombosis

Residual (Chronic) Deep Venous

Thrombosis

Potential Pitfalls

Complete Venous Doppler Versus

More Limited Examinations

Recommendations for Deep Venous

Thrombosis Follow-Up

Venous Insuficiency

Venous Mapping

Upper Extremity Veins

Normal Anatomy

Ultrasound Examination and Imaging

Protocol

Upper Extremity Acute Deep Venous

Thrombosis

Differentiation of Acute From

Residual or Chronic Venous

Thrombosis

Potential Pitfalls

HEMODIALYSIS

Sonographic Examination Technique

Vascular Mapping Before Hemodialysis

Access

Upper Extremity

Ultrasound Examination and Imaging

Protocol

Arteriovenous Fistula and Graft

Arteriovenous Fistula

Graft

Palpable Focal Masses Near

Arteriovenous Fistula and Graft

Arteriovenous Fistula Maturation

Evaluation

Arteriovenous Fistula and Graft

Stenosis

Arterial Steal

Arm and Leg Swelling With

Arteriovenous Fistula or Graft

Arteriovenous Fistula and Graft

Occlusion

CONCLUSION

964

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