Improvements in Rupture Prediction of Abdominal Aortic Aneurysms Using Local Mechanical Property Estimation Obtained From ECG-Gated Computed Tomography

2010 ◽  
Author(s):  
Áine Tierney ◽  
Anthony Callanan ◽  
Tim M. McGloughlin
Keyword(s):  
Computed Tomography ◽  
Abdominal Aortic Aneurysms ◽  
Common Type ◽  
Aortic Aneurysms ◽  
Diagnostic Tools ◽  
The Past ◽  
Property Estimation ◽  
Abdominal Aortic ◽  
The Us ◽  
Local Mechanical Property

Cardiovascular disease concerns any disease which affects the heart or blood vessels. Aneurysms account for a significant portion of these cardiovascular diseases. The most common type of aneurysm is abdominal aortic aneurysm (AAA) which affects up to 5% of the population over the age of 55. AAA is a focal balloon like dilation of the terminal aorta that occurs gradually over a span of years [1]. There are approximately 200,000 patients in the US and 500,000 patients worldwide diagnosed with AAA each year [2]. The incidences of AAA’s has increased largely during the past two decades due in part to the aging demographic, the rise in the number of smokers, the introduction of screening programmes and improved diagnostic tools [3].

Development and 3D Finite Element Implementation of a Multiaxial Constitutive Relation for Abdominal Aortic Aneurysms

2004 ◽  
Author(s):  
Jonathan Vande Geest ◽  
Ajay Bohra ◽  
Wei Sun ◽  
Elena Di Martino ◽  
Michael S. Sacks ◽  
...  
Keyword(s):  
Abdominal Aortic Aneurysms ◽  
Aortic Aneurysms ◽  
Western World ◽  
Infrarenal Aorta ◽  
3D Finite Element ◽  
Finite Element Implementation ◽  
The Past ◽  
Abdominal Aortic ◽  
The Us ◽  
Significant Disease

Abdominal aortic aneurysm (AAA), a localized dilation of the infrarenal aorta, represents a significant disease in the western population. There are approximately 200,000 patients in the US and 500,000 patients worldwide diagnosed with AAAs every year (Bosch, et al. 2001), and rupture of AAAs currently ranks as the 13th leading cause of death in the US. (Silverberg and Lubera 1987) In the past 30 years, the diagnosis of AAA has tripled in the Western world, and this will likely increase in the coming years as the average age of the population is increasing. (Bosch, et al. 2001)

scholarly journals Comparison of ultrasonography, computed tomography and magnetic resonance imaging with intraoperative measurements in the evaluation of abdominal aortic aneurysms

Clinics ◽  
2005 ◽  
Vol 60 (1) ◽  
pp. 21-28 ◽  
Author(s):  
Francisco das Chagas de Azevedo ◽  
Antonio Eduardo Zerati ◽  
Roberto Blasbalg ◽  
Nelson Wolosker ◽  
Pedro Puech-Leão
Keyword(s):  
Magnetic Resonance Imaging ◽  
Computed Tomography ◽  
Magnetic Resonance ◽  
Abdominal Aortic Aneurysms ◽  
Aortic Aneurysms ◽  
Resonance Imaging ◽  
Abdominal Aortic

scholarly journals A Case Report on the Successful Treatment ofStreptococcus pneumoniae-Induced Infectious Abdominal Aortic Aneurysm Initially Presenting with Meningitis

2015 ◽  
Vol 2015 ◽  
pp. 1-6
Author(s):  
Yohei Kawatani ◽  
Yoshitsugu Nakamura ◽  
Yujiro Hayashi ◽  
Tetsuyoshi Taneichi ◽  
Yujiro Ito ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Abdominal Aortic Aneurysm ◽  
Back Pain ◽  
Streptococcus Pneumoniae ◽  
Aortic Aneurysm ◽  
Successful Treatment ◽  
Abdominal Aortic Aneurysms ◽  
Aortic Aneurysms ◽  
Limb Weakness ◽  
Abdominal Aortic

Infectious abdominal aortic aneurysms often present with abdominal and lower back pain, but prolonged fever may be the only symptom. Infectious abdominal aortic aneurysms initially presenting with meningitis are extremely rare; there are no reports of their successful treatment. Cases withStreptococcus pneumoniaeas the causative bacteria are even rarer with a higher mortality rate than those caused by other bacteria. We present the case of a 65-year-old man with lower limb weakness and back pain. Examination revealed fever and neck stiffness. Cerebrospinal fluid showed leukocytosis and low glucose levels. The patient was diagnosed with meningitis and bacteremia caused byStreptococcus pneumoniaeand treated with antibiotics. Fever, inflammatory response, and neurologic findings showed improvement. However, abdominal computed tomography revealed an aneurysm not present on admission. Antibiotics were continued, and a rifampicin soaked artificial vascular graft was implanted. Tissue cultures showed no bacteria, and histological findings indicated inflammation with high leukocyte levels. There were no postoperative complications or neurologic abnormalities. Physical examination, blood tests, and computed tomography confirmed there was no relapse over the following 13 months. This is the first reported case of survival of a patient with an infectious abdominal aortic aneurysm initially presenting with meningitis caused byStreptococcus pneumoniae.

A Relation Between Particle Hemodynamics and Intraluminal Thrombus Formation in Abdominal Aortic Aneurysms

2009 ◽  
Author(s):  
Christopher A. Basciano ◽  
Julie H. Y. Ng ◽  
Ender A. Finol ◽  
Clement Kleinstreuer
Keyword(s):  
Particle Deposition ◽  
Thrombus Formation ◽  
Abdominal Aortic Aneurysms ◽  
Aortic Aneurysms ◽  
Blood Proteins ◽  
Intraluminal Thrombus ◽  
Abdominal Aortic ◽  
Cellular Debris ◽  
The Us ◽  
Normal Diameter

Abdominal aortic aneurysms (AAAs) are local dilations of the aorta below the renal arteries where the lumen diameter is ≥ 1.5 times the normal diameter of the healthy blood vessel. Ruptured aneurysms are the 13th leading cause of death in the US [1]. In approximately 75% of all AAAs, a particle-deposition layer forms adjacent to the arterial wall within the lumen called the intra-luminal thrombus (ILT). The thrombus composition has been shown to be a fibrin structure composed of blood cells, platelets, blood proteins, and other cellular debris [2]. Additionally, Yamazumi et al. [3] have presented data that suggest AAA morphology is associated with an elevated state of blood coagulation and fibrinolysis within the aneurysm.

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