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Novel and Innovative Hybrid Technique for Type A Aortic Dissection
Published on: March 28, 2025
Modernizing Aortic Dissection Classification in the Era of Endovascular and Hybrid Repair: Implications for Radiology
Jeremy Jia Qi Soon1, Wendy Sook Chuei Cheong2, Jasmine Ming Er Chua3
1Department of Diagnostic Radiology, Changi General Hospital, Singapore. jeremy_soon_jq@hotmail.com.
Insights
Accurate aortic dissection classification is crucial for patient care. Modern systems like TEM and SVS/STS offer better guidance for current treatments than traditional DeBakey or Stanford classifications.
Area of Science:
- Cardiovascular Imaging
- Radiology
- Thoracic Surgery
Background:
- Traditional aortic dissection classifications (DeBakey, Stanford) lack guidance for modern endovascular and hybrid repair techniques.
- The Stanford classification, while widely used, has limitations in addressing contemporary aortic dissection management.
- Advancements in aortic repair necessitate more detailed classification systems.
Purpose of the Study:
- To compare traditional and modern aortic dissection classification systems.
- To highlight the implications of these classifications for radiologic reporting.
- To emphasize how detailed descriptors align radiological findings with current management strategies.
Main Methods:
- Review and comparison of DeBakey, Stanford, Type/Entry/Malperfusion (TEM), and Society for Vascular Surgery/Society of Thoracic Surgeons (SVS/STS) classifications.
- Analysis of high-risk imaging features identified in contemporary guidelines.
- Pictorial review format to illustrate classification differences and reporting implications.
Main Results:
- Modern classifications (TEM, SVS/STS) incorporate detailed anatomic and clinical descriptors, including entry tear location and malperfusion.
- The TEM system adds a 'non-A non-B' category and entry/malperfusion details.
- The SVS/STS classification utilizes a zone-based model for dissection typing.
- High-risk imaging features are crucial for predicting outcomes in uncomplicated dissections.
Conclusions:
- Contemporary aortic dissection classifications provide superior guidance for current surgical and endovascular treatments.
- Detailed anatomic and risk-based descriptors in modern classifications improve radiologic reporting and clinical decision-making.
- Accurate classification is essential for effective communication and optimal patient management in aortic dissection.
Abstract:
Accurate classification of aortic dissection is essential for guiding clinical treatment and facilitating communication between radiologists and clinicians. Traditional classifications, such as the DeBakey and Stanford systems, categorize dissections according to their origin and extent, or by involvement of the ascending aorta. The Stanford classification has gained widespread use due to its clear correlation with the surgical and medical treatments available at the time. However, these traditional classifications provide limited guidance for contemporary management, particularly in the era of endovascular and hybrid surgical techniques for aortic repair. Modern classifications, such as the Type/Entry/Malperfusion (TEM) system and Type B dissection reporting standards proposed by the Society for Vascular Surgery and the Society of Thoracic Surgeons (SVS/STS), incorporate more detailed anatomic and clinical descriptors. The TEM system expands upon the Stanford classification by adding a "non-A non-B" category for arch dissections and incorporating entry tear and malperfusion descriptors. The SVS/STS classification introduces a zone-based model that defines the dissection type by the location and extent of the entry tear. Contemporary guidelines have identified several high-risk imaging features that predict poor outcomes in otherwise uncomplicated dissections. This pictorial review compares these classifications and highlights their implications for radiologic reporting, emphasizing how detailed anatomic and risk-based descriptors better align radiologic interpretations with contemporary management strategies.
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