Related Experiment Video

Updated: Jul 3, 2026

Novel and Innovative Hybrid Technique for Type A Aortic Dissection
06:26

Novel and Innovative Hybrid Technique for Type A Aortic Dissection

Published on: March 28, 2025

Assessment of thoracic aortic conformational changes by four-dimensional computed tomography angiography in patients

Tim F Weber1, Maria-Katharina Ganten, Dittmar Böckler

  • 1Department of Radiology, German Cancer Research Center, Heidelberg, Germany. t.weber@dkfz.de

European Radiology
|July 24, 2008
PubMed

Insights

Heartbeat-related aortic distension in chronic aortic dissection type B (CADB) shows greater changes in the true lumen. Non-dissected segments exhibit even distension, while the dissected aorta

Area of Science:

  • Cardiovascular Imaging
  • Thoracic Aorta
  • Aortic Dissection

Background:

  • Chronic aortic dissection type B (CADB) affects the thoracic aorta.
  • Understanding aortic distension in CADB is crucial for patient management.

Purpose of the Study:

  • To characterize heartbeat-related distension in dissected and non-dissected thoracic aortic segments in CADB patients.
  • To compare distension amplitudes between different aortic segments and channels.

Main Methods:

  • ECG-gated computed tomography angiography in ten CADB patients.
  • Multiplanar reformations at 20 time points of the R-R interval.
  • Quantification of relative amplitudes of aortic area and major/minor axis diameter changes.

Main Results:

  • Aortic area and minor axis diameter showed significantly greater distension in the true channel (Ct) compared to the false channel (Cf) and aortic vertex (B).
  • No significant differences were observed in major axis diameter distension.
  • Non-dissected aortic arch segments (A, B) demonstrated evenly distributed distension.

Conclusions:

  • Heartbeat-related distension is evenly distributed in non-dissected aortic arch segments in CADB.
  • The true channel of the dissected aorta experiences significantly greater conformational changes due to altered blood flow properties.

More Related Videos

Time-Resolved, Dynamic Computed Tomography Angiography for Characterization of Aortic Endoleaks and Treatment Guidance via 2D-3D Fusion-Imaging09:32

Time-Resolved, Dynamic Computed Tomography Angiography for Characterization of Aortic Endoleaks and Treatment Guidance via 2D-3D Fusion-Imaging

Published on: December 9, 2021

Four-Dimensional Computed Tomography-Guided Valve Sizing for Transcatheter Pulmonary Valve Replacement09:57

Four-Dimensional Computed Tomography-Guided Valve Sizing for Transcatheter Pulmonary Valve Replacement

Published on: January 20, 2022

Related Concept Videos

Aneurysm II: Clinical Manifestations and Diagnostic Studies01:21

Aneurysm II: Clinical Manifestations and Diagnostic Studies

Thoracic, aortic arch and abdominal aneurysms are significant vascular conditions that can present with various clinical manifestations and lead to serious complications. Understanding these manifestations and the appropriate diagnostic studies is essential for effective management and treatment.Thoracic Aortic AneurysmsThoracic aortic aneurysms often remain asymptomatic until they reach a size that impinges on adjacent structures. They typically cause deep, diffuse chest pain that radiates to...
Aortic Regurgitation II: Clinical Features and Diagnostic Tests01:22

Aortic Regurgitation II: Clinical Features and Diagnostic Tests

Aortic valve regurgitation (AR) occurs when the aortic valve fails to close properly, allowing blood to flow backward from the aorta into the left ventricle. This backflow can result in two distinct clinical presentations: acute and chronic AR, each characterized by its own set of symptoms and physical findings.Acute Aortic RegurgitationAcute AR presents with a sudden onset of severe symptoms. Patients typically experience profound dyspnea (shortness of breath), chest pain, and signs of left...
Aneurysm III: Interprofessional Care01:26

Aneurysm III: Interprofessional Care

Aneurysm management involves either conservative medical therapy or surgical intervention, depending on the size and symptoms of the aneurysm. Conservative management is generally reserved for smaller, asymptomatic aneurysms, while larger or symptomatic aneurysms often necessitate surgical repair.Conservative Medical TherapyFor small, asymptomatic aneurysms, particularly abdominal aortic aneurysms (AAA) less than 5.5 centimeters in diameter, conservative medical therapy is recommended. This...
Imaging Studies for Cardiovascular System V: CT01:28

Imaging Studies for Cardiovascular System V: CT

Cardiac computed tomography (CT) scanning is an advanced cardiac imaging technique that utilizes CT technology, with or without intravenous (IV) contrast, to produce accurate cross-sectional virtual slices of specific areas of the heart, coronary circulation, and major blood vessels such as the aorta, pulmonary veins, and arteries. The computer processes these slices to generate three-dimensional images. Multidetector CT (MDCT) is a rapid form of CT scanning that captures multiple slices...
Thoracic Aorta01:15

Thoracic Aorta

The thoracic section of the aorta begins at the T5 vertebra and extends to the T12 level at the diaphragm, initially progressing through the mediastinum to the left of the spinal column. Throughout its course in the thoracic segment, the thoracic aorta emits various offshoots known collectively as visceral and parietal branches. The branches that predominantly supply blood to visceral organs are termed visceral branches and include bronchial, pericardial, esophageal, and mediastinal arteries,...
Aortic Regurgitation IV: Nursing Management01:17

Aortic Regurgitation IV: Nursing Management

A nurse managing a patient with aortic regurgitation begins with a comprehensive assessment, including a review of the patient's medical history, family history, and lifestyle factors. During the cardiac examination, the nurse listens for heart sounds and checks for signs of valve abnormalities. The nurse also observes for symptoms such as dyspnea, orthopnea, and paroxysmal nocturnal dyspnea and assesses the patient's endurance and daily activity tolerance.Based on the findings, the nurse...