Coronary artery fistula is a rare congenital cardiac anomaly that is often found incidentally during computed tomography angiography. Coronary fistula between the left circumflex coronary artery and the coronary sinus is among the less common forms of coronary artery fistula. A 60-yea\r-old female patient presented to our outpatient cardiology department with symptoms of severe, de novo heart failure. Echocardiogram revealed severe mitral regurgitation and a dilated duct that turbulently accelerated colour Doppler flow behind the left ventricle with significant left-to-right shunt. Cardiac magnetic resonance imaging and computed tomography angiography revealed a massively dilated fistula between the left circumflex coronary artery and the coronary sinus with a diameter of 3–4 cm. The patient underwent combined heart surgery involving mitral ring annuloplasty and fistula ligation and was discharged in stable condition on guideline-based medical therapy. At 18 months of follow-up, minimal residual shunt flow and mild-to-moderate mitral regurgitation were found. We report a rare case of congenital coronary disorder resulting in heart failure and highlight the importance of complex non-invasive cardiac diagnostic procedures before planning and performing heart surgery.

Aim: The purpose of this study is to provide comprehensive and structured knowledge about the state and development opportunities of domestic public video surveillance systems.Methodology: The author conducted a comprehensive study in this qualitative and quantitative analysis-based research, focusing on the planning, operation, and management aspects of public video surveillance systems in Hungary. To achieve this, they conducted a questionnaire-based survey in the county seats of the country as well as in the 23 districts of Budapest.Findings: The extent of system deployment, operating conditions, as well as supervision and usage methods vary from county to county and district to district. The use of various image analysis software is negligible compared to the possibilities.Value: The comprehensive survey, which provides an insight into the prevalence of domestic surveillance systems, is a crucial and missing element in Hungarian literature. The research results highlight numerous development opportunities in the operation of surveillance video surveillance systems.

Video surveillance systems are used today in many parts of the world in public spaces. Although most publications date the appearance of the systems in public spaces to the 1980s, the use of the systems by the British police dates back 60 years. However, the actual spread of these systems has only been significant since the 1990s, as the development of technology made it possible to produce images of a quality that can be well utilised for the suppression and detection of crime through constant and intensive surveillance of public spaces at a cost-effective price. The speed of spread, size of infrastructure, mode of supervision and use, and the purpose of installation of the systems vary from country to country in Europe. This is mainly determined by the political, social, criminal, economic and legal context of the country.

Aim: The aim of this study is to provide comprehensive and organised knowledge about the development of public space surveillance systems in Europe, including Hungary.Methodology: In this qualitative, descriptive-analytical research, the Author provides a historical overview that examines the reasons behind the different levels of adoption of public space surveillance systems in various European countries. This is done by studying domestic and foreign literature, as well as analysing and evaluating information available on the internet.Findings: The speed of adoption, the extent of implementation, the supervision and usage methods, and the purpose of installation of these systems vary between countries in Europe. This is mainly determined by the political, social, criminal, economic, and legal context of each country.Value: The comprehensive historical overview that presents the development and history of the application of surveillance cameras is a crucial and much-needed element in Hungarian literature. The research results highlight the varying roles that surveillance cameras play in ensuring the security of public spaces and preventing crime across European countries.

Aim: The aim of the study is to draw attention to the dangers of using artificial intelligence. Methodology: Alongside a relevant literature review, the author illustrates the aspects of artificial intelligence jeopardising our security by providing examples and addresses the existing and evolving regulatory environment. Findings: Artificial intelligence can directly or indirectly pose a threat to our security. The risks associated with artificial intelligence, coupled with the current rapid technological advancement, make it imperative to establish appropriate and adaptive continuous regulations to ensure the increasing use of AI comes with minimal negative consequences. Value: The study explores previously overlooked features that compromise security. Its findings can contribute to understanding how artificial intelligence can endanger our security on both narrower and broader societal levels.

Aim: The aim of the study is to draw attention to the dangers of using artificial intelligence. Methodology: Alongside a relevant literature review, the author illustrates the aspects of artificial intelligence jeopardizing our security by providing examples and addresses the existing and evolving regulatory environment. Findings: Artificial intelligence can directly or indirectly pose a threat to our security. The risks associated with artificial intelligence, coupled with the current rapid technological advancement, make it imperative to establish appropriate and adaptive continuous regulations to ensure the increasing use of AI comes with minimal negative consequences. Value: The study explores previously overlooked features that compromise security. Its findings can contribute to understanding how artificial intelligence can endanger our security on both narrower and broader societal levels.