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[Modern postmortem coronary angiographic examination methods in the service of clinical cardiology (author's transl)]
Insights
Postmortem coronary angiography using contrast medium or double x-ray contrast effectively visualizes coronary vessels and ostia. This radiological method aids in understanding coronary arterial and myocardial pathology relationships.
Area of Science:
- Cardiovascular Radiology
- Forensic Pathology
- Cardiac Imaging
Context:
- Postmortem examination of coronary vessels presents challenges in detailed anatomical and pathological assessment.
- Conventional methods may not fully reveal the intricate details of the coronary arterial system.
Purpose:
- To describe and evaluate advanced radiological techniques for postmortem coronary vessel imaging.
- To demonstrate the utility of contrast medium filling and double x-ray contrast methods for detailed visualization.
Summary:
- Contrast medium injection via the aorta allows comprehensive filling of coronary vessels, including those with stenoses or anastomoses.
- A specialized technique enables radiological reproduction in projections similar to intravital clinical cardiology, facilitating direct comparison.
- Combined radiological and histological examination of heart slices precisely maps coronary territories and correlates arterial pathology with myocardial conditions.
- The double contrast method excels in reproducing coronary ostia and individual vessels, even with overlapping structures.
- Postmortem pressure-induced diameter changes provide insights into the mechanical properties of coronary vessel walls.
Impact:
- These enhanced postmortem radiological methods offer significant potential for advancing scientific understanding in clinical cardiology.
- Provides a valuable tool for investigating the etiology and progression of coronary artery disease.
- Facilitates accurate correlation of vascular findings with clinical presentation and outcomes.
Abstract:
The coronary vessels of the postmortal heart can be radiologically reproduced after being filled compactly with a contrast medium or by x-ray double contrast. All vessels are primarily filled by injecting contrast medium over the aorta, even when multiple orifices, ostiumstenoses, or artificial anastomoses exist. Further, the possibility is granted to reproduce the coronary ostia. A special process permits the radiological reproduction of postmortal coronary vessels in the same projection as used by clinical cardiologists intravitally. Stereoscopic x-ray pictures are easily produced, even when using an x-ray tube in fixed position. The radiological examination of horizontal heart slices combined with histological giant sections, allows an exact determination of the supplying areas of singular coronary vessels and their branches, as well as providing information about the relationship between coronary arterial and myocardial pathology. The double contrast x-ray method offers the advantage of a faultless reproduction of the coronary ostia and an estimation of the singular vessels, even with multiple overshadowing. In addition conclusions can be drawn from the changes of diameters of the coronary vessels under defined pressure as to the mechanical wall characteristics post-mortem. By means of these extended methods the postmortal radiological examination of coronary vessels can play an important role in the solution of scientific problems of clinical cardiology today.