Coronary angiography and computed tomography angiography in the diagnosis of extrinsic compression of left internal mammary artery A 82-year-old man with a previous coronary artery bypass graft was admitted to our hospital for recurrent and refractory episodes of rest angina with electrocardio-graphic signs of anterior myocardial ischemia. Coronary angiography revealed a three-vessel obstructiv...

AIMS PCI with drug eluting stents (DES) has been shown to reduce restenosis and major adverse cardiac event (MACE) rates compared to bare metal stents (BMS) in native coronary vessels, although outcomes in saphenous vein graft (SVG) lesions are less clear. We retrospectively studied 388 consecutive patients admitted to our centre for SVG PCI to assess mortality and MACE outcomes (defined as com...

As medical imaging rapidly expands, there is an increasing need to structure and organize image data for efficient analysis, storage and retrieval. In response, a large fraction of research in the areas of content-based image retrieval (CBIR) and picture archiving and communication systems (PACS) has focused on structuring information to bridge the “semantic gap”, a disparity between machine an...

BACKGROUND Bilateral internal thoracic artery (BITA) grafting with a composite T-graft enables right coronary artery (RCA) system revascularization with the distal end of the free right internal thoracic artery (RITA). This study compares this grafting technique to left-sided BITA grafting and RCA revascularization with the right gastroepiploic artery (RGEA) and saphenous vein grafts (SVG). M...

Mailing Address: Gonzalo Martinez Rodriguez • Hospital Clinico Pontificia Universidad Catolica de Chile. Marcoleta 367, Santiago. Postal Code 8320000, Santiago – Chile. E-mail: [email protected] Manuscript received March 18, 2016; revised manuscript March 23, 2016; accepted April 13, 2016. A 76 year-old man with a past medical history of type 2 Diabetes, stage 3 chronic kidney disease and previous...

Long-term patency of saphenous vein grafts remains low. Recurrent ischemia after late graft failure can be treated by re-operation or percutaneous coronary intervention (PCI). The intervention can be performed in the native artery or the bridging vein graft. We report a case of 62-year-old patient, who presented with a recurrent ischemic heart disease despite many revascularization attempts. In...

The paper presents two techniques to convert raster images in a Scalable Vector Graphics format. The first method is a technique that generates a Data Dependent Triangulation just by swapping the edges generated by a regular triangulation; the second technique is a Wavelet Based Triangulation and generates a multi-level triangulation based on the data collected from the wavelet multi-level tran...

This paper presents a web environment for the Z formal specification language using the Scalable Vector Graphics (SVG) technology. The Z Specification Web Editor (ZSWE) is the first prototype of a web based graphical editor for the Z specification language. It not only supports graphical editing and global accessibility for the Z formal specifications, but also provides model comprehension faci...

In many regions around the world, changes in weather conditions are not a slow process. With the weather being likely to break up in a matter of hours if not minutes every other day, people who have to adapt to the weather highly appreciate sound and accurate weather forecasts. As weather depends on a multitude of global and local factors, however, weather forecasts require complex and timecons...

To evaluate the improvement in myocardial oxygen delivery following saphenous vein graft surgery (SVG) for angina pectoris (AP), 46 patients underwent a multistage treadmill test of maximal exercise capacity before and 3-22 (average 8) months after SVG. Variables from exercise testing were correlated with symptomatic response, left ventricular hemodynamics, and graft patency. Functional capacit...