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Correctness of multi-detector-row computed tomography for diagnosing mechanical prosthetic heart valve disorders

I-Chen Tsai1, Yung-Kai Lin, Yen Chang

  • 1Department of Radiology, Taichung Veterans General Hospital, Taichung, Taiwan, Republic of China. sillyduck.radiology@gmail.com

European Radiology
|November 28, 2008
PubMed

Insights

Multi-detector computed tomography (MDCT) accurately diagnoses prosthetic heart valve disorders, showing 100% concordance with surgical findings. This imaging technique is excellent for evaluating valve complications, excluding beam-hardening artifacts.

Area of Science:

  • Cardiology
  • Radiology
  • Medical Imaging

Background:

  • Prosthetic heart valves are crucial for cardiac function but can develop complications.
  • Accurate diagnosis of prosthetic valve disorders is essential for timely surgical intervention.

Purpose of the Study:

  • To compare multi-detector computed tomography (MDCT) findings with operative results for diagnosing prosthetic valve disorders.
  • To assess the efficacy of MDCT in evaluating pannus formation, dysfunction, paravalvular leaks, and pseudoaneurysms.

Main Methods:

  • Prospective enrollment of 25 patients with 31 prosthetic heart valves over 3 years.
  • Evaluation using MDCT and transthoracic echocardiography (TTE).
  • Comparison of MDCT findings with intraoperative findings in patients undergoing surgery within 1 week.

Main Results:

  • MDCT showed 100% concordance with surgical findings for diagnosing and localizing prosthetic valve disorders.
  • One patient (3.2%) was excluded due to beam-hardening artifact.
  • Prosthetic valve disorders were suspected in 12 patients; 6 underwent surgery.

Conclusions:

  • MDCT provides excellent delineation of prosthetic valve disorders, demonstrating high accuracy.
  • MDCT is a valuable tool for assessing complications of prosthetic heart valves, with limitations due to beam-hardening artifacts.

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