Hungarian Radiology

[Celebrating Professor Endre Kuhn on his 80th birthday]

WENINGER Csaba, HORVÁTH László

JUNE 22, 2008

Hungarian Radiology - 2008;82(03-04)

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Further articles in this publication

Hungarian Radiology

[Complex licence examination on breast diagnostics]

PALKÓ András, ORMÁNDI Katalin, FORRAI Gábor, PÉNTEK Zoltán

Hungarian Radiology

[Not ‘rounded-off’ birthday - Professor László Horváth, 71 years old]

LOMBAY Béla

Hungarian Radiology

[Significance of MR-angiographic technical parameters and the contrast material in the diagnosis of peripherial vascular diseases]

PAVLIKOVICS Gábor, SHAIKH Shoahib, FARAGÓ Katalin, LOMBAY Béla

[Atherosclerosis presents as a significant problem in everyday healthcare. Thus far, its effect on the vascular bed was measured by means of digital subtraction angiography. More recently, due to advance in hardware, the less invasive techniques like the ultrasound, CT and MRI have into the practice, producing results very similar to those of digital subtraction angiography. Recently, contrast material aimed for blood-pool MR angiography has been introduced. This change presents as a challenge to the operating personnel since the injection rate and the MR sequence parameters need to be adjusted adequately. Also, there is a late-phase breakdown of the contrast material. A further challenge is to interpret the steadystate images. In this article an effort has been made to summarise the basis of MR angiography, with special emphasis on peripheral angiography and suitable contrast materials. Finally, we illustrate our parameters through concrete cases.]

Hungarian Radiology

[Breast Imaging Day - Budapest, 4th April, 2008]

SIMON Éva

Hungarian Radiology

[Successful international course on the imaging diagnostics of the liver; ESGAR Liver Imaging Workshop - Szeged, 18th-20th April, 2008]

HARKÁNYI Zoltán

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Interest in the hippocampal formation and its role in navigation and memory arose in the second part of the 20th century, at least in part due to the curious case of Henry G. Molaison, who underwent brain surgery for intractable epilepsy. The temporal association observed between the removal of his entorhinal cortex along with a significant part of hippocampus and the developing severe memory deficit inspired scientists to focus on these regions. The subsequent discovery of the so-called place cells in the hippocampus launched the description of many other functional cell types and neuronal networks throughout the Papez-circuit that has a key role in memory processes and spatial information coding (speed, head direction, border, grid, object-vector etc). Each of these cell types has its own unique characteristics, and together they form the so-called “Brain GPS”. The aim of this short survey is to highlight for practicing neurologists the types of cells and neuronal networks that represent the anatomical substrates and physiological correlates of pathological entities affecting the limbic system, especially in the temporal lobe. For that purpose, we survey early discoveries along with the most relevant neuroscience observations from the recent literature. By this brief survey, we highlight main cell types in the hippocampal formation, and describe their roles in spatial navigation and memory processes. In recent decades, an array of new and functionally unique neuron types has been recognized in the hippocampal formation, but likely more remain to be discovered. For a better understanding of the heterogeneous presentations of neurological disorders affecting this anatomical region, insights into the constantly evolving neuroscience behind may be helpful. The public health consequences of diseases that affect memory and spatial navigation are high, and grow as the population ages, prompting scientist to focus on further exploring this brain region.

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The syndrome of headache with neurologic deficits and cerebrospinal fluid lymphocytosis (HaNDL) is a rare entity. This disease has been related to migrainous headaches. It is a benign, self-limited disorder, which is characterized by fluctuating neurological symptoms and cerebrospinal fluid lymphocytosis. We describe a case of a 47 years old man with acute onset of headache and aphasia. Cerebrospinal fluid analysis revealed a lymphocytic pleocytosis (25 cells/μl, 100% lymphocytes). Electroencephalogram showed moderate slow rhythm in the left hemisphere, with temporoparietal predominance, and without epileptiform activity. His blood tests as well as magnetic resonance imaging (MRI) results were normal. With the diagnosis of HaNDL syndrome the patient was accepted in the Department of Neurology and discharged with full recovery.

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