Hungarian Radiology

[Application of radiostereometry]

SZÉKELY Miklós

JUNE 10, 2005

Hungarian Radiology - 2005;79(03)

COMMENTS

0 comments

Further articles in this publication

Hungarian Radiology

[Entertainment ultrasound]

HARKÁNYI Zoltán

Hungarian Radiology

[Imre Lélek Memorial Conference - 7th Conference on Ultrasound and Diagnostic Imaging]

FARBAKY Zsófia

Hungarian Radiology

[Prevention of thrombotic complications in vascular interventional procedures]

HORVÁTH László, BATTYÁNY István, ROSTÁS Tamás, HARMAT Zoltán, BODROGI Gabriella, RADICS Éva

[Procedures of vascular interventional radiology is linked inevitably a certain amount of risk of thrombotic complications, like intimal and vascular wall injuries, increased thrombotic risk caused by the catheter itself, etc. The first approach of thrombotic prevention was achieved by acetyl salicylic acid in case of peripheral arteries, this treatment was later replaced by long-term anticoagulation. Opportunities were provided by the recognition of risky blood characteristics in relation to thrombotic complications. Consequently, a well performed preparation and premedication of the patients could reasonably decrease the risk. The most important steps are the cessation of smoking, normalization of hemoconcentration and antithrombotic premedication. Better understanding of the nature of atherosclerotic progression led to the introduction of long-term fibrinolytic inhibition therapy. In the past decades beside patients with vascular stenosis, the oncology patients are also treated by different radiological interventions, like intraarterial chemotherapy and chemoembolization. The use of several-day-long infusion represent a new challenge, the treated vessels, the lumen and the surface of the catheter must be prevented of thrombosis. For this purpose a few suitable drugs can be applied with mild anticoagulant and fibrinolytic stimulating effect. We use the sodium pentosan polysulphate.]

Hungarian Radiology

[General Assembly of the Association of the Hungarian Radiographers]

FEHÉR Lászlóné

Hungarian Radiology

[The possibilities of invasive radiological therapy of deep venous thrombosis and in vitro experimental examination of therapeutic factors affecting the treatment]

HARMAT Zoltán, JÁRAY Ákos, BATTYÁNY István

[INTRODUCTION - The first part of this paper is an overview on the possibilities of invasive radiology treatment of deep venous thrombosis. In the next part an in vitro experiment is described demonstrating the basics of mechanical and pharmaco-mechanical catheters applied in deep venous thrombosis. MATERIALS AND METHODS - The in vitro haemodinamic model of the iliocaval veins contained a thermostat and an engine responsable for pulsing circulation according to the venous system. We tested the chance of driftage of thrombus in different age according to the state of the collateral system. Thrombectomy was made by mechanical (Simpson-catheter) and pharmaco-mechanical (Pulsespray catheter) ways. The weight of the non-drifted thrombi was measured. RESULTS - All the 16 thrombus were flown while collateral system was closed and none of them were flown while the collateral system was open but the rate of their solubility was different. The efficacy of the thrombus-removal by Simpson catheter was better than by Pulse-spray catheter and fresh thrombus-fragments were more soluble than older ones. CONCLUSION - By this in vitro experiment we opened the way for using mechanical and pharmaco-mechanical catheters in deep venous thrombosis.]

All articles in the issue

Related contents

Clinical Neuroscience

A rare entity of acquired idiopathic generalised anhidrosis which has been successfully treated with pulse steroid therapy: Does the histopathology predict the treatment response?

ÖKTEM Özdemir Ece, ÇANKAYA Şeyda, UYKUR Burak Abdullah, ERDEN Simsek Nazan, YULUG Burak

Acquired idiopathic generalised anhidrosis is an uncommon sweating disorder characterized by loss of sweating in the absence of any neurologic, metabolic or sweat gland abnormalities. Although some possible immunological and structural mechanisms have been proposed for this rare entity, the definitive pathophysiology is still un­clear. Despite some successfully treated cases with systemic corticosteroid application, the dose and route of steroid application are controversial. Here, we present a 41-year-old man with lack of genera­lised sweating who has been successfully treated with high dose pulse intravenous prednisolone. We have discussed his clinical and histopathological findings as well as the treatment options in view of the current literature.

LAM KID

[New findings in the cortical bone biology and its role in bone fractures]

BALOGH Ádám, BHATTOA Harjit Pál

[The authors surveyed the already known factors responsible for the osteoporotic bone fragility. Then the results of using modern imaging techniques (micro-CT, high-resolution peripheral computed quantitative tomograph - HR-pQCT) and advanced computer analytic methods (finite element analysis, FEA) are presented. These data - beyond the already known fracture risk factors (age, risk of falling, bone mineral density - BMD, and fine structure damage of trabecular bone) are stressing the importance of the (micro)damage of cortical bone as a fracture risk factor, which has been still underrated. The cortical thickening and increased porosity - verified on various population samples - are increasing the risk of fractures in certain subgroups of subjects having identical BMD values, even among those, who are considered only osteopenic by the earlier classification based on BMD values. Backed with modern software batteries, the new imaging techniques are expected to enter clinical application in the near future. Pharmacologic agents with stronger cortical effect are already available and research is continuing to find new drugs to use in the management of osteoporotic patients of high fracture risk.]

Clinical Neuroscience

[Primary prevention program of the Hungarian Spine Society - Part II Controlled prospective study of short term efficacy]

SOMHEGYI Annamária, TÓTH János, MAKSZIN Imre, GARDI Zsuzsa, FESZTHAMMER Artúrné, DARABOSNÉ Tim Irma, TÓTHNÉ Steinhausz Viktória, TÓTHNÉ Szabó Klára, VARGA Péter Pál

[Introduction - The primary prevention program of the Hungarian Spine Society is set around 12 test exercises that assess performance of postural muscles and then develops their strength and flexibility. By this the scheme aims to make the biomechanically correct use of the spinal column spontaneous. Subjects and methos - The application of the scheme in the frame of physical education in a primary school was investigated in a prospective controlled study in the school-year of 2001/2002. Participating children were aged 6 to 14. The intervention group (n=200) regularly did the posture correction exercises with their teacher's direction in physical education classes, while the control group (n=213) did not. The 12 test exercises of the posture correction scheme of the Hungarian Spine Society were tested by an independent physiotherapist at the beginning and at the end of the school-year in both groups. Results were analyzed by paired and unpaired t-tests and by a chi-square test. Results - At the end of the school-year the strength and flexibility of the postural muscles of the intervention group improved significantly compared both to their own performance (p<0.01) at the beginning of the school-year and to the control group. Test results of the control group were significantly (p<0.05) worse at the end of the school-year than their own results at beginning of the school-year, and were more significantly (p<0.01) worse than the test results of intervention group. Conclusion - The results of the controlled study confirm that regular use of the preventive exercises in physical education improves the strength and flexibility of postural muscles. In order to analyze the results concerning specific muscle groups or age groups a detailed study with age- and gender-matched controls will be necessary.]

Hungarian Radiology

[Basics and methods of radiostereometric analysis in orthopaedic practice]

ILLYÉS Árpád, KISS Rita M., KÖLLŐ Katalin, KISS Jenő

[Photogrametry is a discipline processing geometric information of images according to the general image concept. Radiostereometric analysis (Roentgen stereophotogrametric analysis) is the most dynamically developing area of the orthopaedic photogrametry. The aim of the authors was to summarize the different methods of radiostereometric analysis in use. Two basically different methods are used: marker-based and model-based radiostereometric analysis. The authors summarize and compare the steps, the advantages and the disadvantages of either method. Radiostereometric analysis is because of its high precision appropriate as a tool in scientific research and diagnostic in orthopaedics, such as detecting the 3D micromotion of different components of implants, the wear of polyethylene inserts or determining anterior-posterior and rotational movements of the knee. Analyzing the reproducibility and accuracy of the reconstruction methods one can establish that the accuracy of analytical methods in use is behind the accuracy of digital automated software. The precision of the model-based radiostereometry can never achieve the accuracy of the marker based radiostereometry because of the inaccuracy of the initial input model of implants, although the one of the method of reversed engineering - one of model-based radiostereometric analysis - can approach the accuracy of marker-based radiostereometry.]

LAM Extra for General Practicioners

[Parkinson’s disease from the perspective of general practice]

KOVÁCS Norbert

[Due to the recent developments in medicine, Parkinson’s disease became a relatively well-treatable condition. Recently the working abilities and the health-related quality of life of our patients dramatically improved by the application of optimal pharmacological and functional neurosurgical treatment options. Despite of these good progresses, the curative treatment option is still warranted. The aim of this review article is to present those pharmacological, neurosurgical and other treatments, which can improve the condition and quality of life of the patients. We also discuss the major concerns important for general practitioners including the assessment of driving abilities.]