Coronary magnetic resonance angiography could be a good alternative examination to CT angiography for selected patients

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  • Takekawa Shoichi D.
    Department of Diagnostic Radiology, Southern Tohoku General Hospital, Koriyama, Fukushima, Japan Research Institute of Diagnosis and Therapy of Vascular Diseases, Foundation: Southern Tohoku Research Institute for Neuroscience, Koriyama, Fukushima, Japan
  • Munechika Hirotsugu
    Department of Diagnostic Radiology, Southern Tohoku General Hospital, Koriyama, Fukushima, Japan
  • Saginoya Toshiyuki
    Department of Diagnostic Radiology, Southern Tohoku General Hospital, Koriyama, Fukushima, Japan
  • Wen-Han Liu
    Department of Diagnostic Radiology, Southern Tohoku General Hospital, Koriyama, Fukushima, Japan
  • Ono Masahiro
    Department of Cardiology, Southern Tohoku General Hospital, Koriyama, Fukushima, Japan
  • Kawamura Keiichi
    Department of Cardiology, Southern Tohoku General Hospital, Koriyama, Fukushima, Japan
  • Kanno Megumu
    Department of Cardiovascular Surgery, Southern Tohoku General Hospital, Koriyama, Fukushima, Japan
  • Midorikawa Hirofumi
    Department of Cardiovascular Surgery, Southern Tohoku General Hospital, Koriyama, Fukushima, Japan
  • Nakazawa Makoto
    Pediatric and Lifelong Congenital Cardiology Institute, Koriyama, Fukushima, Japan
  • Morishima Shigehiro
    Department of Pediatrics, Southern Tohoku General Hospital, Koriyama, Fukushima, Japan
  • Yamazaki Hidekazu
    Department of Radiological Technology, Southern Tohoku General Hospital, Koriyama, Fukushima, Japan
  • Konno Takashi
    Department of Radiological Technology, Southern Tohoku General Hospital, Koriyama, Fukushima, Japan
  • Chiba Yoshihiro
    Department of Radiological Technology, Southern Tohoku General Hospital, Koriyama, Fukushima, Japan

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Abstract<br>Purpose: This study aimed to present the utilization of non-contrast coronary magnetic resonance angiography ( MRA ) in selected patients with renal dysfunction, contrast medium allergy, or other reasons by reviewing clinical cases.<br>Methods: A total of 53 patients underwent coronary three-dimensional whole cardiac MRA for 7 years starting in July 2016, wherein three patients received the examination twice. Coronary MRA is an alternative to CT angiography ( CTA ). MRA was performed using a 1.5T MR unit with a 32-channel cardiac coil, respiration navigation, and cardiac gating.The detection rates of significant stenosis, no significant stenosis and indeterminate findings were calculated. The prognoses of all patients after MRA were assessed to determine whether acute coronary syndrome ( ACS ) occurred during the follow-up period.<br> Results: Significant stenosis was observed in six patients among 53 patients ( positive cases, 11.3% ). No significant stenosis was noted in 36 patients ( negative cases, 67.9% ). In five patients, the finding of MRA was indeterminate ( 9.4% ). The prognosis of patients with positive, negative, and indeterminate cases, including eight preoperative cases, revealed no occurrence of ACS during the follow-up period ( 39.8 months on average ). There was one false-negative case and five early deaths soon after MRA. <br>Conclusion: Non-contrast coronary MRA was beneficial for the preoperative examination in patients with suspected coronary diseases. Coronary MRA may be an alternative to coronary CT Angiography in selected patients.

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  • 弘前医学

    弘前医学 75 (1), 44-56, 2024-10-30

    弘前大学大学院医学研究科・弘前医学会

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