Limited Aortic Intimal Tears: CT Imaging Features and Clinical Characteristics.

Limited aortic intimal tear is an uncommon lesion of the dissection spectrum. The lesion has several imaging features that are not well known, including asymmetric aortic contour abnormalities, filling defects, and various morphologic patterns, such as linear, L-shaped, T-shaped, and stellate configurations. Hemorrhage of the aortic wall may also be present in patients with this rare entity.

Delivery of hepatocyte growth factor mRNA from nanofibrillar scaffolds in a pig model of peripheral arterial disease.

Chemical modification of mRNA (mmRNA) substantially improves their stability and translational efficiency within cells. Nanofibrillar collagen scaffolds were previously shown to enable the spatially localized delivery and temporally controlled release of mmRNA encoding HGF both and . Herein we developed an improved slow-releasing HGF mmRNA scaffold and tested its therapeutic efficacy in a porcine model of peripheral arterial disease.

Abdominal aortic aneurysms: pre- and post-procedural imaging.

Abdominal aortic aneurysm (AAA) is a relatively common, potentially life-threatening disorder. Rupture of AAA is potentially catastrophic with high mortality. Intervention for AAA is indicated when the aneurysm reaches 5.

Epidemiology and contemporary management of abdominal aortic aneurysms.

Abdominal aortic aneurysm (AAA) is most commonly defined as a maximal diameter of the abdominal aorta in excess of 3 cm in either anterior-posterior or transverse planes or, alternatively, as a focal dilation ≥ 1.5 times the diameter of the normal adjacent arterial segment. Risk factors for the development of AAA include age > 60, tobacco use, male gender, Caucasian race, and family history of AAA.

Pulmonary artery dissection complicating aortic dissection in a patient with bicuspid aortic valve and aortic coarctation.

We report a case of a type A aortic dissection with extension into the main pulmonary artery through a sinus of Valsalva fistula. Echocardiography and computed tomographic angiography of the chest were performed and bicuspid aortic valve, hemopericardium, and dilatation of the aortic root were found. A Stanford type A dissection was seen, extending to the distal transverse thoracic aorta, and there was a communication between the dissection at the left sinus of Valsalva and the main pulmonary artery, where a dissection flap was detected at computed tomographic angiography.

An unruptured, thrombosed 10 cm right coronary artery aneurysm mimicking a pericardial cyst.

Giant coronary artery aneurysms are a rare and potentially life-threatening condition. A 47 year old male presented with a progressive 6 month history of dyspnea and acute right sided chest pain. During the patients work-up, a 10 cm × 10 cm right coronary artery aneurysm was discovered on CT scan and confirmed by cardiac catheterization.

An unusual cause of dysphagia: pericardial effusion after implantable cardioverter-defibrillator placement.

Background: Dysphagia is a known complication of pericardial effusions. Most cases of pericardial effusions are idiopathic, infectious, and neoplastic, but can also occur after cardiac procedures.

Objective: To report the case of a patient who developed dysphagia from a sub-acute pericardial effusion caused by the placement of an implantable cardioverter-defibrillator (ICD).

Transient, marked flattening of the abdominal aorta, iliac arteries, and venous structures during active vomiting: report of a case demonstrated by MDCT.

In recent years, intra-abdominal hypertension has gained greater recognition both clinically and radiologically. Its most clinically significant form occurs when intra-abdominal pressure (IAP) is sustained at high pressures for long periods of time. This is known as abdominal compartment syndrome (ACS), which is a surgical emergency with high morbidity and mortality rates even when treated appropriately and its imaging characteristics are well described in the literature.

Tools of the trade for CTA: MDCT scanners and contrast medium injection protocols.

The introduction of multi-detector row computed tomography (MDCT) scanners in 1998 ushered in new advances in CT angiography (CTA). The subsequent expansion of MDCT scanner capabilities, coupled with advances in understanding of contrast medium (CM) dynamics, has further improved the clinical availability and consistency of CTA. We will review recent advances in CT scanner technology and discuss early CM dynamics.

In vivo MR angiographic quantification of axial and twisting deformations of the superficial femoral artery resulting from maximum hip and knee flexion.

Purpose: The goal of this study was to quantify in vivo deformations of the superficial femoral artery (SFA) during maximum knee and hip flexion with use of magnetic resonance (MR) angiography to improve description of the complex, dynamic SFA environment.

Materials And Methods: Contrast medium-enhanced MR angiography was performed on the leg vasculature of eight healthy adults in the supine and fetal positions. The SFA was defined as the centerline path of the iliofemoral segment from the profunda femoris to the descending genicular artery.

CT angiography of peripheral arterial disease.

Lower-extremity computed tomographic (CT) angiography (ie, peripheral CT angiography) is increasingly used to evaluate patients with peripheral arterial disease. It is therefore increasingly important for all vascular specialists to become familiar with the strengths and limitations of this new technique. The aims of this review are to explain the principles of scanning and injection technique for a wide range of CT scanners, to explain and illustrate the properties of current image postprocessing tools for effective visualization and treatment planning, and to provide an overview of current clinical applications of peripheral CT angiography.