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Electrocardiogram-gated 16-multidetector computed tomographic angiography of the coronary arteries in dogs
  1. Edoardo Auriemma1,
  2. Felice Armienti2,
  3. Simona Morabito1,3,
  4. Swan Specchi1,
  5. Vincenzo Rondelli1,
  6. Oriol Domenech1,
  7. Carlo Guglielmini4,
  8. Giuseppe Lacava1,
  9. Eric Zini1,4,5 and
  10. Toufic Khouri2
  1. 1Istituto Veterinario di Novara, Granozzo con Monticello (No), Novara, Italy
  2. 2Diagnostic Imaging Department, Policlinico di Monza Hospital, Monza, Italy
  3. 3Department of Veterinary Science, University of Messina, Messina, Italy
  4. 4Department of Animal Medicine, Production and Health, University of Padova, Legnaro (PD), Italy
  5. 5Clinic for Small Animal Internal Medicine, Vetsuisse Faculty, University of Zurich, Zurich, Switzerland
  1. E-mail for correspondenceIstituto Veterinario di Novara Granozzo con Monticello (No) Novara Italy; edoardo.auriemma{at}gmail.com

Abstract

The aims of this study were to assess if ECG-gated 16-multidetector CT (MDCT) provides sufficient temporal and spatial resolution to evaluate canine coronary arteries and provide a detailed description of their anatomy. A total of 24 dogs were included. Images were reviewed to assess: (1) coronary artery opacification and dominance; (2) choice of optimal R-R ECG reconstruction interval for both left coronary artery (LCA) and right coronary artery (RCA); (3) branching patterns of the left main coronary artery (LMCA); and (4) diameter and length of the LCA and RCA and classification of their branches by adapting a previously described segmental coding system. The degree of opacification of the coronary arteries was subjectively judged as excellent or good in five and 19 dogs, respectively. All hearts showed a left coronary dominance. The best R-R reconstruction interval for both LCA and RCA arteries was 75 per cent. Seven different subtypes of LMCA branching patterns were noted. The rami circumflexus and interventricularis paraconalis were divided into three angiographic segments, and the ramus septi interventricularis and the RCA in two and three segments, respectively. ECG-gated 16-MDCT coronary angiography provides adequate resolution to assist the basic anatomy of the main coronary artery branches.

  • imaging
  • cardiology
  • computed tomography (CT)
  • dogs
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Footnotes

  • Funding The authors have not declared a specific grant for this research from any funding agency in the public, commercial or not-for-profit sectors.

  • Competing interests None declared.

  • Ethics approval The study protocol was approved by the ethics committee of the University of Padua, Italy (permission number: 54/2016).

  • Provenance and peer review Not commissioned; externally peer reviewed.

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