Prevalence of congenital coronary artery anomalies and variants in 726 consecutive patients based on 64-slice coronary computed tomography angiography

  Background: Coronary computed tomography angiography (CCTA) is helpful in making a precise noninvasive evaluation of coronary anatomy, allowing concomitant evaluation of other cardiac structures. The aim of this study was to determine the prevalence of coronary artery variations detected by 64-slice mutidetector CT. Materials and methods: The results of ECG-gated CCTA in 726 consecutive patients (mean age 58 years) were analysed retrospectively. The main indicationsfor CCTA were a typical chest pain, angina pectoris, screening for coronary artery disease and determination of the patency of bypass grafts or stents. Acquisitionwas performed with a 64-detector CT scanner with retrospective ECG gating. Imaging results were assessed by experienced cardiovascular radiologist. Results: The overall incidence of coronary artery anomalies was 1.1% (8 out of 726 participants). The most common anomaly was an anomalous origin of the circumflex artery from the right coronary sinus with a retroaortic course (4 patients,0.6%), followed by origin of right coronary artery from the left coronary sinus (2 patients, 0.3%). One patient with abnormal origin of the left main artery from the right coronary sinus (0.1%) and 1 patient with a circumflex artery origin from the proximal segment of the right coronary artery (0.1%) were observed, both with retroartic course. Conclusions: CCTA is a noninvasive imaging technique useful for the precise evaluation of variations of the coronary arteries. This study shows similar results to other reports on this subject.

Persistent left superior vena cava with an absent right superior vena cava in a 72-year-old male with multivessel coronary artery disease

Congenital anomalies of systemic veins are usually asymptomatic and foundincidentally during ultrasonography, computed tomography (CT) or magneticresonance examinations performed for other clinical indications. Persistent leftsuperior vena cava (PLSVC) with absent right superior vena cava (RSVC) is thecongenital aberration in the thoracic venous system which occurs in only 0.09%to 0.13% of patients who have congenital heart defects. In this paper, we presentthe extremely rare case of a 72-year-old male with PLSVC associated withan absence of RSVC, referred for coronary CT angiography. Multidetector CTangiography is a powerful tool for the detection of venous anomalies, which isessential before invasive procedures such as the implantation of pacemakers

Variable structure robot control systems: The RAPP approach

International audienceThis paper presents a method of designing variable structure control systems for robots. As the on-board robot computational resources are limited, but in some cases the demands imposed on the robot by the user are virtually limitless, the solution is to produce a variable structure system. The task dependent part has to be exchanged, however the task governs the activities of the robot. Thus not only exchange of some task-dependent modules is required, but also supervisory responsibilities have to be switched. Such control systems are necessary in the case of robot companions, where the owner of the robot may demand from it to provide many services.

Korzystanie z mediów społecznościowych przez mieszkańców terenów wiejskich

The study assesses the use of social media by rural residents. The study was conducted in Lublin county in 2016. Residents of rural areas (especially farmers) are a social group perceived to be the least technologically developed, the latest in adopting innovations and least advanced in using electronic devices. However, in recent years, differences between city dwellers and rural area inhabitants have been decreasing. Until today, in Poland, not all residents of rural areas have telephones or internet access. The explanation could be that their work does not involve using a computer as in the case of, for example, an insurance agent, architect or journalist. It was found that differences in the category of household equipment involving the possession of a computer and access to the Internet are diminishing – the largest increase has been recorded in recent years in the scope of access to broadband Internet. In the study, a visible relationship between the use of social media and the education of respondents was observed.Celem artykułu jest ocena korzystania z mediów społecznościowych przez mieszkańców wsi. Mieszkańcy obszarów wiejskich (zwłaszcza rolnicy) to grupa społeczna postrzegana jako najmniej rozwinięta technologicznie, najpóźniej wprowadzająca innowacje, najmniej zaawansowana w korzystaniu z urządzeń elektronicznych, choć w ostatnich latach w porównaniu z mieszkańcami miast różnice te maleją. Do dziś w Polsce nie wszyscy mieszkańcy wsi mają telefony lub dostęp do Internetu. Można przypuszczać, że tak się dzieje, ponieważ ich praca nie polega na korzystaniu z komputera, tak jak na przykład w przypadku agenta ubezpieczeniowego, architekta lub dziennikarza. Badanie przeprowadzono w powiecie lubelskim w 2016 roku. Stwierdzono, że różnice w kategorii sprzętu gospodarstwa domowego i dostępu do Internetu zmniejszają się w porównaniu do mieszkańców miast – największy wzrost odnotowano w ostatnich latach w zakresie dostępu do Internetu szerokopasmowego. Widoczny był również związek między korzystaniem z mediów społecznościowych a wykształceniem respondentów

Cortical mapping by functional magnetic resonance imaging in patients with brain tumors

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