Related Experiment Video
Updated: Jun 24, 2026
In Vivo Quantitative Assessment of Myocardial Structure, Function, Perfusion and Viability Using Cardiac Micro-computed Tomography
Published on: February 16, 2016
Ex vivo and in vivo coronary ostial locations in humans
Joseph Knight1, Vartan Kurtcuoglu, Karl Muffly
1Laboratory of Thermodynamics in Emerging Technologies, Department of Mechanical and Process Engineering, ETH Zurich, Sonneggstrasse 3, ML J 36, 8092, Zurich, Switzerland.
Insights
This study reveals significant differences in right coronary ostium location between living patients and cadavers, highlighting the importance of in vivo measurements for cardiac procedures.
Area of Science:
- Cardiovascular anatomy
- Medical imaging
- Interventional cardiology
Background:
- Accurate knowledge of coronary ostial locations is crucial for cardiac interventions.
- Previous studies relied solely on cadaveric data, limiting in vivo applicability.
Purpose of the Study:
- To assess in vivo coronary ostial locations using cardiac dual-source computed tomography (CT).
- To compare these in vivo measurements with ex vivo cadaveric data.
Main Methods:
- Dual-source CT was used to measure coronary ostial locations in 150 patients.
- Cadaveric measurements were performed on 75 specimens using open techniques.
- Measurements included the relationship to the aortic annulus and sinus of Valsalva height.
Main Results:
- In vivo mean locations: Right 17.0±3.6 mm, Left 15.3±3.1 mm.
- Significant differences (P < 0.0001) were found for the right coronary ostium between CT and cadaver data.
- Large variations in ostial origins were observed in both patient and cadaver groups.
Conclusions:
- This study provides essential in vivo data on coronary ostial origins.
- Significant discrepancies exist between in vivo and ex vivo measurements for the right coronary ostium.
- Understanding these anatomical variations is vital for developing improved cardiac treatments.
Purpose:
Knowledge of the normal in vivo distribution and variation of coronary ostial locations is essential in the planning of various interventional and surgical procedures. However, all studies to date have reported the distribution of coronary ostia locations only in cadaver hearts. In this study, we sought to assess the distribution of coronary ostial locations in patients using cardiac dual-source computed tomography (CT) and compare these values to those of human cadaveric specimens.
Methods:
Measurements of the coronary ostia location were performed in 150 patients undergoing dual-source CT and in 75 cadavers using open measurement techniques. All 150 patients had a normal aortic valve function and no previous cardiac intervention or surgery. The location of the right and left coronary origin in relation to the aortic annulus and the height of the sinus of Valsalva were measured.
Results:
Mean ostial locations at CT were 17.0 (+/-3.6) mm and 15.3 (+/-3.1) mm for the right and left coronary ostia, with large variations of both sides (right: 10.4-28.5 mm; left: 9.8-29.3 mm). In cadavers, mean locations were 14.9 (+/-4.3) mm [5-24 mm] for right and 16.0 (+/-3.6) mm [9-24 mm] for left coronary ostia. Comparison of CT and cadaver data showed statistically significant differences for right (P < 0.0001) but not left (P = 0.1675) coronary ostia.
Conclusions:
This study provides data of normal coronary ostial origins and demonstrates significant differences between in vivo and ex vivo measurements regarding the right coronary ostium. The observed large variations of coronary ostia origins emphasize the importance of considering such anatomic variations in the development of treatments.
