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Duplex sonography in splenomegaly.

L Jarvis1, P G Cook, C M James

  • 1Department of Diagnostic Ultrasound, Plymouth Group Hospital, UK.

The British Journal of Radiology
|June 1, 1991
PubMed
Summary
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Doppler assessment of the splenic artery in splenomegaly did not reveal significant changes in waveform, peak frequency, or pulsatility index. These findings suggest that splenic artery Doppler characteristics offer limited diagnostic information for determining the cause of splenomegaly.

Area of Science:

  • Medical Imaging
  • Vascular Ultrasound
  • Abdominal Radiology

Background:

  • Splenomegaly (enlarged spleen) often lacks a clear cause from clinical or imaging assessments.
  • Standard ultrasound shows homogeneous enlargement but poorly correlates with underlying pathology.
  • Further diagnostic information is needed for splenomegaly.

Purpose of the Study:

  • To assess Doppler characteristics of the splenic artery in splenomegaly.
  • To determine if these characteristics provide additional diagnostic information beyond standard imaging.
  • To exclude cases of portal hypertension from the analysis.

Main Methods:

  • Duplex ultrasound assessment of the splenic artery.
  • Inclusion of 18 normal subjects and 10 patients with splenomegaly from various causes.

Related Experiment Videos

  • Analysis of waveform, peak frequency, and pulsatility index.

    • Main Results:

    • No significant changes were observed in waveform, peak frequency, or pulsatility index in patients with splenomegaly compared to normal subjects.
    • The low-resistance circulation of the spleen, characterized by forward diastolic flow, is maintained in splenomegaly.
    • Increased blood flow in splenomegaly is due to vessel diameter/flow velocity changes, not specific pathology identifiable by Doppler indices.

    Conclusions:

    • Doppler assessment of the splenic artery does not provide significant additional diagnostic information for splenomegaly.
    • The spleen maintains a low-resistance circulation even when enlarged.
    • Splenic artery Doppler parameters do not correlate with specific pathologies causing splenomegaly.