Lege Artis Medicinae

[The role of computer tomography and magnetic resonance imaging in organic neurological diagnosis]

KENÉZ József1

FEBRUARY 09, 1991

Lege Artis Medicinae - 1991;1(03)

[In the last two decades, neuroimaging became the basic investigative method in the diagnostics of organic neurology due to the rapid development of medical electronics. In the nineties called the "Decade of the Brain", the importance of these methods could hardly bee overestimated. The two outstanding investigations of neuroimaging are computer tomography (CT) and magnetic resonance imaging (MR). Surely in the near future the application of these investigations will be incorporated in the Hungarian healthcare system as well. In this review all the points of view are collected on the basis of neurologic clinical symptomatology to help clinicians to decide, which method and when has to be chosen to gain the most valuable and detailed information on the quickest way, with less risk, and for the least amount of money ]


  1. Egyetemi tanár Semmelweis Orvostudományi Egyetem Neurológiai Klinika Neuroradiológiai Részleg



Further articles in this publication

Lege Artis Medicinae

[Awareness of hypoglycaemia in diabetes mellitus: Prospective clinical-epidemiological investigations]


[In order to survey the frequency of hypoglycaemia and its awareness we investigated 91 insulin- treated diabetic women (48 pregnant and 43 non-pregnant) consecutively using 9 to 15 blood glucose measurements. Subjective hypoglycaemic symptoms of patients were registered by using a structured questionnaire. Biochemically proved hypoglycaemia has been found in two third of patients (62/91). One third of the patients had a loss of awareness, 23 had partial awareness and 19 were aware of hypoglycaemia. No significant difference were found according to age, diabetes duration, daily insulin dose/kg body weight, glycated haemoglobin levels and frequency of diabetic complications. Five standard cardiovascular autonomic reflex-tests were performed in 31 patients. Age, diabetes duration, frequency of diabetic complications of patients with evidence of autonomic neuropathy significantly surpassed that of having normal cardiovascular reflex-tests. Our results confirm from clinical-epidemiological aspect that hypoglycaemia unawareness is not invariably associated with cardiovascular autonomic neuropathy. ]

Lege Artis Medicinae

[Five cases of operated atrial tumors]


[Between November 1986. and June 1989. five patients underwent excision of an atrial tumour. Two of the patients had previous peripheral embolization, two had cardiac symptoms and one was symptomless. All the tumours were demonstrated by means of echocardiography and in four cases by angiocardiography as well. Four of them were left atrial tumors and one in the right atrium. The tumors were succesfully removed in all patients: in three cases by shaving them from the endocardium, in one case by excising a portion of atrial septum and in one case with a margin of normal atrial wall. Histological examination showed thrombus in one case. All patients survived operation and left hospital in good conditions. During the follow up there were no cardiac complication or local recurrence.]

Lege Artis Medicinae

[Hypothesis of natural birth]


[It's supposed by the author that there exists a natural birth. According to his assumption in every woman's subconscionsness there is the code of the natural birth's behaviour (CODE), which can be spontaneously mobilized in the gravid woman. Putting into practice whichever way for the preparation of the birth, this mobilization can be advanced and in this way the child-bearing women's behaving repertory during their birth is increasing and it's drawing near to the equivalent of its own code. This may be the explication of the success and result of the alternative obstetrics end the preparing programs for the different births. The psychological explanation of the theory is given on the basis of C. G. Jung's activity.]

Lege Artis Medicinae

[Report on gastroenterological endoscopic activity in Hungary in 1989]

NAGY György, JUHÁSZ László

[The Endoscopic Section of the Hungarian Gastroenterological Society, under the leadership of Professor Wittmann, published an annual report on the status and development of endoscopy of the digestive organs in Hungary from 1975. In 1976, the report reported 27453 examinations performed at 75 endoscopic workplaces with 163 instruments. The 1987 survey already included 139496 examinations (36623 in Budapest, 102873 in the countryside) performed at 117 workplaces (37 in Budapest, 80 in the countryside) with 565 instruments (219 in Budapest, 346 in the countryside). In a statistical summary of 13 years, 968090 endoscopic examinations resulted in 389 (0.4 per thousand) complications, of which 71 (7 per 100,000) were fatal. The collection of study data was interrupted with the death of Professor Wittmann. ]

Lege Artis Medicinae

[Brief News]

[High-resolution magnetic resonance imaging of skull base vascular lesions summary study; PET, CT and MR in the differential diagnosis of neuropsychiatric diseases today's applications; Infectious diseases of the brain]

All articles in the issue

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A case with reversible neurotoxicity induced by metronidazole

EREN Fulya, ALDAN Ali Mehmet, DOGAN Burcu Vasfiye, GUL Gunay, SELCUK Hatem Hakan, SOYSAL Aysun

Background - Metronidazole is a synthetic antibiotic, which has been commonly used for protozoal and anaerobic infections. It rarely causes dose - and duration - unrelated reversible neurotoxicity. It can induce hyperintense T2/FLAIR MRI lesions in several areas of the brain. Although the clinical status is catastrophic, it is completely reversible after discontinuation of the medicine. Case report - 36-year-old female patient who had recent brain abscess history was under treatment of metronidazole for 40 days. She admitted to Emergency Department with newly onset myalgia, nausea, vomiting, blurred vision and cerebellar signs. She had nystagmus in all directions of gaze, ataxia and incompetence in tandem walk. Bilateral hyperintense lesions in splenium of corpus callosum, mesencephalon and dentate nuclei were detected in T2/FLAIR MRI. Although lumbar puncture analysis was normal, her lesions were thought to be related to activation of the brain abscess and metronidazole was started to be given by intravenous way instead of oral. As lesions got bigger and clinical status got worse, metronidazole was stopped. After discontinuation of metronidazole, we detected a dramatic improvement in patient’s clinical status and MRI lesions reduced. Conclusion - Although metronidazole induced neurotoxicity is a very rare complication of the treatment, clinicians should be aware of this entity because its adverse effects are completely reversible after discontinuation of the treatment.

Clinical Neuroscience

Insights into the structure and function of the hippocampal formation: Relevance to Parkinson’s disease

GYÖRFI Orsolya, NAGY Helga, BOKOR Magdolna, KÉRI Szabolcs

The link between the hippocampus and declarative memory dysfunctions following the removal of the medial temporal lobe opened unexplored fields in neuroscience. In the first part of our review, we summarized current theoretical frameworks discussing the role of hippocampus in learning and memory. Several theories are highlighted suggesting that the hippocampus is responsible for assembling stimulus elements into a unitary representation that later can be utilized to simulate future events. The hippocampal formation has been implicated in a growing number of disorders, from neurodegenerative diseases to atypical cognitive ageing and depression. Recent neuroimaging studies provided new opportunities to study in detail the hippocampal formation’s role in higher levels of the nervous system. We will present data regarding the regional specialization of the hippocampus in experimental models developed for healthy and neurological conditions with a special focus on Parkinson’s disease. Combined evidence from neuroimaging studies suggested that hippocampal volume is reduced in non-demented, newly diagnosed patients with Parkinson’s disease, which is associated with impaired memory performance. These findings proposed that, beyond the well-known striatal dopamine loss, impaired hippocampal synaptic plasticity may contribute to cognitive and affective impairments in early Parkinson’s disease.

Lege Artis Medicinae

[The role of MRI in the diagnosis of tumours]


[Imaging is important in the evaluation of tumour detection, staging to determine the response to therapy, to follow the patient to find an early recurrent tumour. The ability to assess cancer spread has been revolutionized by advances of digital imaging modalities, such as digital ultrasound (US), computed tomography (CT), and magnetic resonance imaging (MRI). MRI is the method of choice for detecting and evaluating brain, spine, head and neck and musculoskeletal tumours, but it is complementary in the investigation of the thorax. US and CT remains the primary test for imaging the abdomen, while MRI plays a subsidiary role as a problem solving technique. In the evaluation of focal liver disease numerous prior reports have documented a superior performance of MRI compared to CT and US in the detection of primary and metastatic liver tumours. MRI is gaining more and more importance in imaging of the pelvis. Breast MRI is increasingly used as an adjunct to conventional imaging modalities. Several recent developments in MRI have altered the role of this imaging, and it is often the preferred choice among diagnostic tools for the detection and characterization of tumour cases.]

Clinical Neuroscience

[Post-traumatic ischemic stroke in childhood]


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Clinical Neuroscience

[Neurological and psychiatrical prospects of apathy]


[During his long practice as head physician of a neurological and psychiatrical department with over 100 beds performed the examination and department of more than a hundred thousand patients. Based on the acquired experience and the data of the most recent literature he treats every aspect of the apathy syndrome. He emphasizes the multidisciplinary approach during both establishing the causes and the examination and treatment of patients. In order to clarify the diagnosis consultations with other disciplines must be used as well as the the knowledge provided by the now essential CT, MRI, PET, SPECT. The author discusses the international therapeutical possibilities and practice after the recently alredy possible exact diagnosis.]