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[Principles of duplex ultrasound diagnosis of the internal thoracic artery]

R Marx1, H Sons, B Lösse

  • 1Abteilung für Thorax- und Kardiovaskularchirurgie, Heinrich-Heine-Universität, Düsseldorf.

Zeitschrift Fur Kardiologie
|November 1, 1994
PubMed

Insights

Ultrasonic duplex scanning is a suitable noninvasive tool for evaluating the internal thoracic artery (ITA). This method accurately visualizes the ITA and assesses blood flow velocities, aiding in its use for myocardial revascularization.

Area of Science:

  • Cardiovascular Surgery
  • Medical Imaging
  • Vascular Ultrasound

Background:

  • The internal thoracic artery (ITA) is the preferred conduit for myocardial revascularization due to its superior long-term patency.
  • Assessing the ITA's suitability and patency is crucial for successful surgical outcomes.

Purpose of the Study:

  • To evaluate the suitability of ultrasonic duplex scanning for investigating the internal thoracic artery.
  • To establish baseline hemodynamic and dimensional parameters of the ITA in healthy volunteers.

Main Methods:

  • Utilized a two-dimensional B-mode and Doppler ultrasound system.
  • Investigated thirty healthy young volunteers to assess the internal thoracic artery.
  • Measured systolic peak flow velocity and vessel diameter, and analyzed flow curves.

Main Results:

  • Mean systolic peak flow velocity in the proximal ITA was 1.15 m/s, decreasing to 0.55 m/s distally.
  • Mean diameters were 2.18 mm (left ITA) and 2.43 mm (right ITA).
  • Flow curves were predominantly elastic-type, with some exhibiting muscular-type resistance characteristics.

Conclusions:

  • Ultrasonic duplex scanning is a noninvasive and effective diagnostic tool for visualizing the internal thoracic artery.
  • The study demonstrated the feasibility of duplex scanning for assessing ITA hemodynamics and dimensions, supporting its use in pre-operative evaluations for myocardial revascularization.

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