Abstract Background Globally, reports have suggested that cardiac catheterization procedures, particularly elective coronary procedures declined as a result of the COVID-19 pandemic. However, there is scarce data on this aspect, in terms South Asian low- & middle-income country (LMIC) setting. Purpose We aimed to evaluate temporal trends and impact pandemic emergency procedural volumes at h...

Abstract Background Acute total occlusion of the unprotected left main coronary artery (ATOLMCA) is a dramatic entity with very high mortality. Owing to its infrequency, there limited and inconsistent data regarding this population. Purpose To describe clinical presentation, short- long-term outcomes patients ATOLMCA. Methods This retrospective multicentric cohort study included all presenting ...

Sir, Myocardial perfusion imaging using single-photon emission computed tomography (SPECT) is the most commonly applied diagnostic imaging modality in patients with suspected coronary artery disease in the US, with more than 9 million procedures performed annually. The positive predictive value of SPECT is limited, and in a considerable number of patients with suspected perfusion deficits conve...

BACKGROUND The study was designed to investigate the safety and feasibility of gadopentetate dimeglumine, a gadolinium-based contrast medium, as an alternative angiographic contrast agent in patients with impaired renal function and high risk for iodinated contrast-induced nephropathy. METHODS Gadopentetate dimeglumine was used as the radiographic contrast agent in 32 diagnostic or interventi...

We present a new method to register high and low resolution color images of the retina as well as high resolution angiographies. The registration method is based on global point mapping with blood vessel bifurcations as control points. We also present results of various image fusion algorithms to determine the most appropriate one. Registration and fusion quality assessment is also discussed.

Retinal vessel extraction has become an important task of medical image processing applications in order to diagnose ocular diseases. In this paper, a novel methodology is proposed to extract vessels automatically from retinal angiographies. The proposed methodology has been implemented by means of Cellular Neural Networks techniques to take advantage of their capabilities of massively parallel...

The recent decline in postinfarction mortality reflects the success of the most recent therapeutical proposals incorporated into clinical practice . Despite this evolutional enhancement, mostly due to the use of thrombolytic agents, an increase in the recurrence of thrombotic phenomena, such as reinfarction and unstable angina, has occurred creating the need for strategies that adequately ident...

To evaluate the feasibility of a single injection protocol for coronary CT angiography (CTA) and lower extremity CTA in patients suspected for peripheral arterial disease (PAD).This prospective observational study included a total of 103 patients who showed an ankle brachial index ≤0.9 and underwent the single injection protocol for coronary and lower extremity CTA. All CTAs used iodinated cont...