Tortuous aorta vs normal aorta - Overview. An aortic valve replacement is a type of open heart surgery used to treat problems with the heart's aortic valve. The aortic valve controls the flow of blood out from the heart to the rest of the body. An aortic valve replacement involves removing a faulty or damaged valve and replacing it with a new valve made from synthetic ...

 
If an aneurysm forms between the upper and lower parts of the aorta, it's called a thoracoabdominal aneurysm. A thoracic aneurysm may be round or tube …. Olivia rodrigo amex

Atherosclerosis in your aorta disrupts the normal flow of blood through your aorta and to the rest of your body. So, it raises your risk of ischemia (lack of oxygen-rich …Surgery. Open-chest surgery for thoracic aortic aneurysm Enlarge image. Ascending aortic root aneurysm procedure Enlarge image. Endovascular repair for thoracic aortic aneurysm Enlarge image. Surgery is generally recommended for thoracic aortic aneurysms about 1.9 to 2.4 inches (about 5 to 6 centimeters) and larger.The aorta is the largest artery of the body and carries blood from the heart to the circulatory system. It has several sections: The Aortic Root, the transition point where blood first exits the heart, functions as the water main of the body. The aorta root contains the aortic valve, the origins of both coronary arteries, and an elastic segment ...Fig. 1 Oblique coronal three-dimensional volume-rendered image of the abdominal aorta in a normal 19-year-old man. ... (CPRs) allow for a tortuous atherosclerotic aorta to be shown on 1 image in a contiguous fashion. This technique assists the surgeon in planning complex repairs, such as endovascular aortic aneurysm …Abstract. The aorta has 2 main functions, conduit and cushion, and is designed to transmit blood to the periphery and buffer pulsatile stress from ventricular …Conclusion: Tortuosity increases with age and blood flow in tortuous aortas is more helical. Increasing helicity, in turn, is associated with decreasing TKE. …Abstract. Objective: Tortuosity in the descending thoracic aorta (DTA) comes with aging and increases the risk of endoleaks after TEVAR. With this report, we would like to define and classify tortuosity in the DTA of patients with thoracic aortic disease. Methods: Retrospective case-control study of two hundred seven patients, comparing sixty ...Aortic aneurysm (say "a-OR-tik AN-yuh-rih-zum"). This is a bulge in the wall of the aorta. The bulge can burst, causing serious bleeding. Aortic dissection. This is a tear between the inner and outer layers of the aorta wall. The tear can cause the wall to separate and burst. This can cause serious bleeding. Limb ischemia (say "iss-KEE-mee-yuh ...The average overall length of the aorta in the thorax—ascending, aortic arch, and descending—is around 33.2 cm or about 13 inches in adult men. Rasi Bhadramani / Getty Images Location . The aortic arch is the part of the aorta between the ascending aorta and thoracic descending aorta. The sharpness of the angle can be …Jun 25, 2022 · Aortic coarctation (ko-ahrk-TAY-shun) is a narrowing of the aorta. It forces the heart to pump harder to move blood through the aorta. Coarctation of the aorta is generally present at birth (congenital heart defect). Symptoms can range from mild to severe. The condition might not be detected until adulthood. The Blue line on the right shows a straighter, wider curve,”uncoiled”. It is nothing serious by itself. “Uncoiled Aorta” reflects a change of the silhouette of the thoracic aorta as seen on the X ray. It usually refers to a mild enlargement and straightening of the thoracic aorta on the imaging test. It is an indication of normal aging ...The arch itself can have variation. If both aortic arches persist, there will be a double-aortic arch forming a “vascular ring ” around the trachea and esophagus (see Fig. 4.4b).Regression of the left aortic arch will produce a right aortic arch (see Figs. 4.4c and 4.5a, b).The reader is referred to other sources for extensive classification of these …Symptoms. Aortic dissection symptoms may be similar to those of other heart problems, such as a heart attack. Typical signs and symptoms include: Sudden severe chest or upper back pain, often described as a tearing or ripping sensation, that spreads to the neck or down the back. Sudden severe stomach pain. Loss of consciousness.1.2 Aortic Arch. The aortic arch (transverse aorta) is a short segment where branch vessels to the head and arms originate. It has typically three branches: First, the innominate (brachiocephalic) artery supplies the right arm and right portion of the head and brain with oxygenated blood.Arterial tortuosity syndrome (ATS) is characterized by widespread elongation and tortuosity of the aorta and mid-sized arteries as well as focal stenosis of segments of the pulmonary arteries and/or aorta combined with findings of a generalized connective tissue disorder, which may include soft or doughy hyperextensible skin, joint hypermobility...These deposits can cause the valve opening to become narrow. Severe narrowing can reduce blood flow through the aortic valve — a condition called aortic valve stenosis. Aortic valve calcification may be an early sign of heart disease, even if there aren't any other heart disease symptoms. Calcification and stenosis generally affect …Aortic inflammation has been shown to play a role in aneurysm progression 7; thus, it is theoretically possible that COVID-19 could worsen aortic disease or cause increased aortic complications. More data are needed to evaluate this question as patients with concomitant COVID-19 and aortic disease are identified and monitored. Aortic valve disease is a type of heart valve disease. In this condition, the valve between the lower left heart chamber and the body's main artery doesn't work properly. The aortic valve helps keep blood flowing in the correct direction through the heart. A damaged or diseased aortic valve can affect blood flow to the rest of the heart and body. Bovine aortic arch (BAA) is the second typical AA branching pattern with an incidence of 7.2% to 21% [ 2 ]. The BAA has a different aortic arch pattern than a cattle group of animals, unlike the name bovine. In cattle, a single great innominate artery originates from the arch and is divided into three branches of the right and left subclavian ...A tortuous aorta may be characterized as a twisted, curved, enlarged or narrowed blood vessel of the heart. An underlying cause of the distorted shape may be due to a build up …We showed that the aorta is more tortuous in older patients, who usually benefit from endovascular repair. However, they do have a higher risk of complications …A tortuous thoracic aorta is serpentine in its shape or path, according to Yale University School of Medicine. The thoracic aorta is the portion of the descending aorta above the d...This iceberg knows it looks like a sheet cake but it would like you to leave it alone. At some point someone said, “there are no right angles in nature,” and then everyone believed...Ribs demonstrate a normal configuration. Vascular tortuosity. Under the category of large vessel involvement, most striking observations are noted in the tortuosity and dilatation of the aortic arch. ... Coronal CT image shows lateral location of the tortuous aorta (empty arrows) reaching to mid-thoracic cavity. (b) 1-month-old female with ...Apr 25, 2023 · An abdominal aortic aneurysm is an enlarged area in the lower part of the body's main artery, called the aorta. The aorta runs from the heart through the center of the chest and belly area, called the abdomen. The aorta is the largest blood vessel in the body. An abdominal aortic aneurysm that ruptures can cause life-threatening bleeding. seen in 70% of cases presenting in older children or adults. if the coarctation is distal to either subclavian artery, then increased flow occurs through the subclavian artery, forming a collateral pathway via the internal thoracic artery, anterior intercostal artery, posterior intercostal artery and then into the descending thoracic aorta.Aneurysmal ascending aorta. This patient had aortic stenosis due to a congenital bicuspid aortic valve. The ascending aorta is enlarged due to post-stenotic dilatation – a common phenomenon in patients with aortic stenosis. Patients with aortic stenosis may have a normal chest X-ray. Patients may also have cardiomegaly indicating left ...In these aorta segments, it is particularly important to avoid off-axis imaging that can overestimate the aortic diameter in patients with tortuous aorta courses. Therefore, adequate MPRs with CT/CMR should be warranted. ... Reported reference maximum normal aortic diameters values at different segments of the aorta are shown …Aorta length increases heterogeneously 16,49 with age as quantified by CT 38,50 and MRI. 13,49 The tortuosity of the descending aorta, 37, 51 but not of the aortic arch, 52 increases with aging ...The descending thoracic aorta (DTA) was analyzed and was divided into four zones of equal length. Subjects were divided into three groups based on their maximum tortuosity value: low (< 30°), moderate (30° – 60°) and high (> 60°). A linear regression model was built to test the effect of age and gender on tortuosity.We present a patient with symptomatic aortic stenosis and regurgitation with extremely tortuous aorta, and scoliosis and kyphosis who underwent TAVR. By using ...Abstract. The patient was a 76-year-old woman with an atypical descending thoracic aortic aneurysm due to a highly tortuous descending aorta. The surgical approach in this case required special consideration because of the aneurysm’s location. The main body of the aneurysm was in the right thoracic cavity. Descending thoracic …Germany's XaaS platform Equipme secures $3.8M Seed led by La Famiglia VC As the economy has gotten tougher, plenty of companies have switched from buying in assets to renting them....If you regularly use a dishwasher in your kitchen and you run out of dishwasher liquid, you’ve likely pondered if just normal dish soap will work in the machine. Tempting though it...Aorta. The aorta is a large, cane-shaped vessel that delivers oxygen-rich blood to your body. It starts in the lower-left part of the heart and passes through the chest and abdomen. Along the way, blood vessels branch off the aorta, extending to organs and supporting tissue. Contents Overview Function Anatomy Conditions and Disorders Care.Symptoms. Aortic dissection symptoms may be similar to those of other heart problems, such as a heart attack. Typical signs and symptoms include: Sudden severe chest or upper back pain, often described as a tearing or ripping sensation, that spreads to the neck or down the back. Sudden severe stomach pain. Loss of consciousness.Your heart has to work harder to squeeze blood through the narrow valve than it does when the valve opening is normal. Aortic stenosis can be caused when a person is born with an aortic valve that has only two leaflets, rather than three. More commonly, though, the condition develops as a result of aging. Aortic stenosis tends to get worse over ...Aortic atheroma refers to plaque that builds up in your aorta. This condition is called atherosclerosis of the aorta. Your aorta is the largest artery in your body. It extends upward from your heart and then curves downward through your chest and belly. Plaque buildup in your aorta raises your risk of many conditions, including: Aortic aneurysm.Anterior aortic sinus: occupies the space between the wall of the aorta and the right cusp of the aortic valve. ... An aortic aneurysm is diagnosed when the increase in aortic wall diameter is 1.5 times more than its normal size. Since the normal diameter of the ascending aorta amounts to about 3.5 cm, and 2.5 cm for the abdominal aorta, the ...Jul 16, 2023 · A 4-cm aortic aneurysm is a little larger than the average diameter of the aorta. The average diameter of the abdominal aorta is about 2 cm, according to the American Heart Association. A 2021 ... Acute aortic occlusion, studied via translumbar aortogram. There are atherosclerotic renal arteries and a normal superior mesenteric artery. (B). Another patient demonstrates chronic aortic occlusion. There is a markedly enlarged and tortuous inferior mesenteric artery providing collateral flow. FIGURE 20-5. (A).The management of thoracic aortic aneurysm is reviewed here. The etiology, natural history, clinical features, and diagnosis of TAA, as well as specific techniques for repair of the thoracic aorta, are discussed separately. (See "Epidemiology, risk factors, pathogenesis, and natural history of thoracic aortic aneurysm and …Jun 23, 2016 · Abstract. At present time, both CT and MRI are valuable techniques in the study of the thoracic aorta. Nowadays, CT represents the most widely employed technique for the study of the thoracic aorta. The new generation CTs show sensitivities up to 100% and specificities of 98-99%. Sixteen and wider row detectors provide isotropic pixels ... Sep 30, 2015 · Ectasia and tortuosity are commonly seen throughout the body and in certain disease states. Diameter: Aneurysm 2x normal size of native aorta. Tortuous regards to the course of the vessel. Ectasia refers to enlarged vessel but less than twice normal. Arteriomegaly-large arteries, not aneurysmal. A 4-cm aortic aneurysm is a little larger than the average diameter of the aorta. The average diameter of the abdominal aorta is about 2 cm, according to the American Heart Association. A 2021 ...These deposits can cause the valve opening to become narrow. Severe narrowing can reduce blood flow through the aortic valve — a condition called aortic valve stenosis. Aortic valve calcification may be an early sign of heart disease, even if there aren't any other heart disease symptoms. Calcification and stenosis generally affect …Aorta length increases heterogeneously 16,49 with age as quantified by CT 38,50 and MRI. 13,49 The tortuosity of the descending aorta, 37, 51 but not of the aortic arch, 52 increases with aging ...Get ratings and reviews for the top 6 home warranty companies in Normal, IL. Helping you find the best home warranty companies for the job. Expert Advice On Improving Your Home All...Many who voted for the UK's exit from the EU now want back in, according to polls Few people, it’s safe to say, enjoyed the tortuous process of negotiating Brexit. Extricating the ...Aortic aneurysm (say "a-OR-tik AN-yuh-rih-zum"). This is a bulge in the wall of the aorta. The bulge can burst, causing serious bleeding. Aortic dissection. This is a tear between the inner and outer layers of the aorta wall. The tear can cause the wall to separate and burst. This can cause serious bleeding. Limb ischemia (say "iss-KEE-mee-yuh ...There is a mild thoracic aorta ectasia, especially in the ascendant and aortic arch, observed as a prominent aortic knob (red circle on frontal x-ray). On the lateral view is possible to follow all the thoracic aortic (red lines) thanks to diffuse parietal atherosclerotic calcifications. The aorta has 3.8 cm in diameter. Heart size is normal.Arterial tortuosity syndrome (ATS) is characterized by widespread elongation and tortuosity of the aorta and mid-sized arteries …An isolated aortic arch aneurysm is an uncommon disease entity and often remains clinically silent, given its indolent growth pattern. Aneurysms of the aortic arch are commonly found in association with aneurysms of the adjacent ascending or descending aorta. The true incidence and natural course are still relatively unknown; however, …seen in 70% of cases presenting in older children or adults. if the coarctation is distal to either subclavian artery, then increased flow occurs through the subclavian artery, forming a collateral pathway via the internal thoracic artery, anterior intercostal artery, posterior intercostal artery and then into the descending thoracic aorta.Aneurysmal ascending aorta. This patient had aortic stenosis due to a congenital bicuspid aortic valve. The ascending aorta is enlarged due to post-stenotic dilatation – a common phenomenon in patients with aortic stenosis. Patients with aortic stenosis may have a normal chest X-ray. Patients may also have cardiomegaly indicating left ...Citation, DOI, disclosures and article data. Right-sided aortic arch is a type of aortic arch variant characterized by the aortic arch coursing to the right of the trachea. Different configurations can be found based on the supra-aortic branching patterns, with the two most common patterns being the right-sided aortic arch with mirror image ...Most patients with TAA have no symptoms. Aneurysms that produce symptoms are typically very large and are at an increased risk for rupture, which is associated with high mortality rates. When symptoms do occur, patients can present with chest or upper back pain, or with symptoms related to compression of surrounding structures leading to nerve ... The aorta is the main artery of the body that exits the heart and delivers blood to every organ of our body. A tortuous aorta is a twisting or distortion of the aorta that brings on the narrowing or constriction of that vessel, which can cause blood flow to be blocked. This condition, although not immediately life-threatening, can lead to high ... Aortic coarctation (ko-ahrk-TAY-shun) is a narrowing of the aorta. It forces the heart to pump harder to move blood through the aorta. Coarctation of the aorta is generally present at birth (congenital heart defect). Symptoms can range from mild to severe. The condition might not be detected until adulthood.Aortic dissection can occur even with normal aortic dimensions, as illustrated by the CT scans (Fig. 3). Therefore, education of the affected individual and their family is important, so that they ensure urgent review if they suffer any chest pain. Annual MRA scanning of the aorta is mandated and if there is evidence of serial growth then ...Jun 2, 2020 · Abstract. The patient was a 76-year-old woman with an atypical descending thoracic aortic aneurysm due to a highly tortuous descending aorta. The surgical approach in this case required special consideration because of the aneurysm’s location. The main body of the aneurysm was in the right thoracic cavity. Descending thoracic aorta ... Mar 15, 2022 · The thoraco-abdominal aorta is tortuous. Included abdominal aorta shows dilated and tortuous branches of the coeliac axis. The main pulmonary artery is short with early bifurcation with long tubular configuration and parallel proximal course of the right and left main pulmonary arteries (arrowheads in C). Normal morphology of bilateral ... Since tortuous aorta causes palpitations, this may only be the first complaint by the patients with this aortic abnormality. Nevertheless, tortuous aorta has also been thought to cause pain due to dislocated esophagus, seeing that the vessel’s twistings can thrust the normal position of the esophagus.Arterial tortuosity syndrome (ATS) is characterized by widespread elongation and tortuosity of the aorta and mid-sized arteries as well as focal stenosis of segments of the pulmonary arteries and/or aorta combined with findings of a generalized connective tissue disorder, which may include soft or doughy hyperextensible skin, joint hypermobility...Arterial tortuosity syndrome (ATS) is characterized by widespread elongation and tortuosity of the aorta and mid-sized arteries as well as focal stenosis of segments of the pulmonary arteries and/or aorta combined with findings of a generalized connective tissue disorder, which may include soft or doughy hyperextensible skin, joint …1. Introduction. In a 2016 statement, the guidelines for the diagnosis and management of patients with thoracic aortic disease was amended to recommend prophylactic repair of the ascending aorta in asymptomatic patients with bicuspid aortic valves (BAV) when the maximum aortic diameter is >5 cm and patients have other risk factors for aortic …Arterial tortuosity syndrome (ATS) is characterized by widespread elongation and tortuosity of the aorta and mid-sized arteries as well as focal stenosis of segments of the pulmonary arteries and/or aorta combined with findings of a generalized connective tissue disorder, which may include soft or doughy hyperextensible skin, joint … In some health conditions, the arteries in the heart may be twisted. The heart arteries are called the coronary arteries. Twisted arteries also are called tortuous arteries. There is a problem with information submitted for this request. Review/update the information highlighted below and resubmit ... The size of the aorta decreases with distance from the aortic valve in a tapering fashion. The normal diameter of the ascending aorta has been defined as <2.1 cm/m 2 and of the descending aorta as <1.6 cm/m 2. 1 The normal diameter of the abdominal aorta is regarded to be less than 3.0 cm. The normal range has to be corrected for age and sex ...Not related: THe two problems are not related. A tortuous aorta tht is not enlarged significantly is not a great concern. In general there is nothing to worry about if the aortic diameter is less than 5 cm and intervention in the chest is not recommended in most cases unless diameter of 5.5-6 cm NO dilation no worryMany radiologists use “ectatic” rather than “dilated” to describe a mildly enlarged aorta, whereas others use “ectatic” to describe an abnormal aortic shape, such as a “tortuous” aorta. 7 Even more problematic is the fact that some imaging groups use the term “ectasia” to describe larger aortas, such as those 4.5 cm to 5.4 ...Many of us have spent the last year pining for the things we were once allowed to do. Sure, there were the basics, like going to work and school with other humans, but there were a...Variant anatomy of the aortic arch occurs when there is failure of normal aortic development.It results in a number of heterogenous anomalies of the aorta and its branch vessels. Gross anatomy. Normally, the aorta ascends in the superior mediastinum to the level of the sternal notch before arching posteriorly and descending in the left …Aortic unfolding · 'Unfolding' of the aorta – a common X-ray finding in elderly patients – is a phenomenon which arises due to elongation of the ascending aorta ...Jul 7, 2023 · The aorta is the largest artery in your body and carries blood from your heart and lungs to everywhere else. Although your aorta is thick and large (running the length of your chest and abdomen ... Two cases of ascending aorta PAU complicated by rupturing into the pericardial cavity and leading to hemopericardium. 64,68 Cardiac tamponade, aortic regurgitation, and left-sided haemothorax are less common sequelae of PAU. 3,49,64,69 Kazerooni et al described a case of contained extrapleural hemorrhage secondary to …Apr 23, 2019 · Aorta length increases heterogeneously 16,49 with age as quantified by CT 38,50 and MRI. 13,49 The tortuosity of the descending aorta, 37, 51 but not of the aortic arch, 52 increases with aging ... Aortic aneurysm (say "a-OR-tik AN-yuh-rih-zum"). This is a bulge in the wall of the aorta. The bulge can burst, causing serious bleeding. Aortic dissection. This is a tear between the inner and outer layers of the aorta wall. The tear can cause the wall to separate and burst. This can cause serious bleeding. Limb ischemia (say "iss-KEE-mee-yuh ...Aortic unfolding. ‘Unfolding’ of the aorta – a common X-ray finding in elderly patients – is a phenomenon which arises due to elongation of the ascending aorta with age. It is not usually considered a pathological …Aug 30, 2014 · Radiological signs in arterial tortuosity syndrome: Aortic elongation sign. (a and b) 4-month-old female with dysmorphic features and abnormal echo was diagnosed with ATS. Elongated tortuous aorta projects laterally (arrow). Sign is particularly useful in younger patient where the aortic knuckle is normally inconspicuous. Aortic unfolding · 'Unfolding' of the aorta – a common X-ray finding in elderly patients – is a phenomenon which arises due to elongation of the ascending aorta ...

1.2 Aortic Arch. The aortic arch (transverse aorta) is a short segment where branch vessels to the head and arms originate. It has typically three branches: First, the innominate (brachiocephalic) artery supplies the right arm and right portion of the head and brain with oxygenated blood.. Towson ice hockey

tortuous aorta vs normal aorta

A contrast-enhanced CT scan of the chest in the coronal plane revealed normal diameter and non-tortuous ascending aorta ( Fig. 1B). The descending aorta was pushed by the stomach and duodenum ( Fig. 1C). A contrast-enhanced CT scan of the chest in the sagittal plane showed the pushed descending aorta ( Fig. 1D).If you regularly use a dishwasher in your kitchen and you run out of dishwasher liquid, you’ve likely pondered if just normal dish soap will work in the machine. Tempting though it...10 Aug 2016 ... ... aorta and a large aneurysm via CT scan, compared to what is actually seen in the body during surgery, and compare it to a post-surgery view.Results The length of the thoracic aorta was significantly related to age (r=0.54) and increased by 59 mm (males) or 66 mm (females) between the ages of 20 and 80 years. Elongation was most pronounced in the proximal descending aorta, which showed an almost 2.5-fold length increase during life. The lengthening of the thoracic aorta was ...Aorta. The aorta is a large, cane-shaped vessel that delivers oxygen-rich blood to your body. It starts in the lower-left part of the heart and passes through the chest and abdomen. Along the way, blood vessels branch off the aorta, extending to organs and supporting tissue. Contents Overview Function Anatomy Conditions and Disorders Care.Overview Definitions. Thoracic aortic aneurysm (TAA) Dilation of the thoracic aorta Aorta The main trunk of the systemic arteries. Mediastinum and Great Vessels: Anatomy by > 50% of its normal diameter; Diameter affected by age, sex Sex The totality of characteristics of reproductive structure, functions, phenotype, and genotype, …Most aortic aneurysms occur in the infrarenal segment (95%). The average size for an infrarenal aorta is 2 cm; therefore, AAAs are usually defined by diameters greater than 3 cm. The normal size for the thoracic and thoracoabdominal aorta is larger than that of the infrarenal aorta, and aneurysmal degeneration in these areas is defined …Maybe a warning: A tortuous aorta is one that is not straight ( the normal condition ) but does not contain and aneurysm. This may occur normally in older people or those with long standing hypertension. It may also occur in younger people who have abnormal composition of their artery walls. In this circumstance it may be a warning of … Normal aorta – 27-year-old. Hover on/off image to show/hide findings. Tap on/off image to show/hide findings. Click image to align with top of page. Normal aorta – 27-year-old. Only part of the aorta is visible on a chest X-ray; A small part of the ascending aorta may be visible; The ‘aortic knuckle’ forms a reliable landmark The location and shape of the aortic root dilatation may provide clues to the aetiology of the ascending aortic aneurysm. The aorta in Marfan syndrome is typically pear‐shaped, being largest at the sinuses of Valsalva, with the ascending aorta tapering to normal calibre at the origin of the innominate artery (fig 3 3).). Aortic aneurysm in ...Thoracic aorta. The thoracic aorta begins where the left ventricle ends at the aortic valve and continues down through the chest. A weakening of the artery wall in this region is called a thoracic aortic aneurysm. A healthy aorta is about 1 inch (2.5 centimeters [cm]) wide, or about the diameter of a garden hose.Apr 23, 2019 · The descending thoracic aorta (DTA) was analyzed and was divided into four zones of equal length. Subjects were divided into three groups based on their maximum tortuosity value: low (< 30°), moderate (30° - 60°) and high (> 60°). A linear regression model was built to test the effect of age and gender on tortuosity. The Aorta. The aorta is the largest artery in the body, initially being an inch wide in diameter. It receives the cardiac output from the left ventricle and supplies the body with oxygenated blood via the systemic circulation. The aorta can be divided into four sections: the ascending aorta, the aortic arch, the thoracic (descending) aorta and ...The aorta is the largest vessel within the human body. It originates from the left ventricle of the heart anterior to the pulmonary artery before arching posteriorly and descending along the posterior mediastinum. It descends to the level of the L4 vertebral body where it bifurcates into the left and right common iliac arteries. It is the main artery …The descending thoracic aorta (DTA) was analyzed and was divided into four zones of equal length. Subjects were divided into three groups based on their maximum tortuosity value: low (< 30°), moderate (30° – 60°) and high (> 60°). A linear regression model was built to test the effect of age and gender on tortuosity..

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