Hungarian Radiology

[Dr. János Kurai 1928-2009]

SÍK Erzsébet

DECEMBER 21, 2009

Hungarian Radiology - 2009;83(04)

COMMENTS

0 comments

Further articles in this publication

Hungarian Radiology

[Residents here and over the rainbow]

LOMBAY Béla

Hungarian Radiology

[Cervical space occupying lesions: diagnosis at sonoelastography]

UJLAKI Mátyás, MAGYAR Péter, KARLINGER Kinga

[Among cervical (neck) region tumours, the thyroid lesions and the metastatic lymph nodes are the most detectable with conventional B-mode ultrasonography (US). The use of MRI and CT scans are limited because of the cost, and in case of CT, the radiation. With the introduction and constant development of sonoelastography, we have in our hands a new imaging procedure which is cheap, fast and harmless, yet giving more information to the examiner than conventional US. The elastographic examination of thyroid lesions is a more explored area than the elastographic visualisation of cervical lymph nodes. The ‘off-line’ elastography showed the highest accuracy allowing to calculate and analyse the strain index of cervical lymph nodes - strain index > 1.5 (85% sensitivity, 98% specificity) - but the ‘off-line’ processing of US elastograms is still too time consuming to be used in busy clinical settings. During the examinations of the thyroid gland both real-time and off-line processed strain imaging were used. An Italian team made a great leap forward as they standardized the degree of distorsion under the application of the external force. Then using the Ueno and Itoh elasticity score they achieved remarkable accuracy with real-time sonoelastography (P <0.0001). On the other hand only those organs are suitable for the US elastography characterization which can be slightly compressed, consequently the examination of a lesion with calcified shell cannot give useful information. Near to the pulsating arteries substantial amounts of decorrelation noise may appear and the examiner has to pay attention what structures are in the ROI box since the sonoelastography method assumes computations relative to the average strain inside the box. To detect a follicular carcinoma in the thyroid gland remains a big challenge. Despite of the limitations most researchers agree on the fact that sonoelastography is a perfect tool to use in addition to the conventional US examination. B-mode US combined with sonoelastography raised the accuracy in differentiation in all cases. With this modality it is also possible to deduce the number of cases when healthy lymph nodes or tissue peaces are taken for biopsy during FNAB.]

Hungarian Radiology

[Clinical significance of nuclear scans in assessing function of thyroid nodules]

NAGY Dezső, BORBÉLY Katalin

[Functional and anatomical imaging plays an important role in the diagnosis and treatment of thyroid nodules presenting with continuously increasing number. In the first part of the paper the usefulness and recent trends of the classical nuclear medicine is discussed. The second part presents the interpretation of incidental thyroid lesions detected by PET-CT and the usefulness of PET in the evaluation of thyroid carcinoma.]

Hungarian Radiology

[Digital volume tomography - The use of cone beam CT in dentistry, oral and maxillofacial surgery]

PLACHTOVICS Márk

[Oral and maxillofacial radiology is a subspecialty with its own field of indication. The goal is to achieve proper diagnostic image quality with the minimal amount of harmful radiation. The most common acquisition techniques are the intraoral radiograph and the panoramic radiograph which result in an overview picture of the whole dental status of the patient or the full mouth survey with the higher doses of radiation indicated for periodontological treatment. The next level is the supplementary radiograph such as occlusal radiograph, transversal tomography (some panoramic radiographs have this option), lateral cephalometric projection, submentovertex view or Waters projection, etc. More over cone beam CT acquisition or digital volume tomography as is called. In case of some described special indications CT, MRI or sometimes US acquisition can be made. In the field of three dimensional radio-diagnostics, the CT has a superior place with well-known advantages for everybody, and the usage has been limited only by the high radiation dose. The main point of the acquisition is the image quality. The load of radiation only makes the field of indication narrow. In every day practice - because of the higher radiation load of each high quality CT - the pictures passing to the doctor are preferred to take with lower resolution and wider slices although the diagnostic value of this never reaches the wanted level. This is why this new acquisition system also mentioned in the title would be better known. This system works with reasonable low radiation coupling with the possibilities of the high fidelity 3D imaging focusing on the bony structures of the head and neck region. The purpose of this article is to give a comprehensive introduction to this method in use for more than a decade. From 2006 in Hungary we also have the option to use the technology.]

Hungarian Radiology

[Voiding sonocystography with ultrasound contrast material for the diagnosis of vesicoureteral reflux]

KIS Éva

[Voiding sonocystography with intravesical administration of ultrasound contrast agent is a sensitive method to detect vesicoureteral reflux without irradiation. Depicting microbubbles in the ureters and collecting system is feasible even with very small amounts of a second-generation ultrasound contrast agent, Sonovue. The reflux is graded (I-V) in a similar manner to the system used in voiding cystourethrography. In this article a detailed description is presented.]

All articles in the issue

Related contents

Clinical Neuroscience

Is stroke indeed a “Monday morning disease”?

FOLYOVICH András, BÉRES-MOLNÁR K Anna, GIMESI-ORSZÁGH Judit, KATONA Lajos, BICZÓ Dávid, VÖRÖS Károly, GŐBL Gábor, AJTAY András, BERECZKI Dániel

Introduction - The therapeutic time window of acute stroke is short. Decision on the use of intravenous thrombolysis is based on well-defined criteria. Any delay in the transport to a designated stroke centre decreases the odds of therapeutic success. In Hungary, the admission rate of stroke patients peaks on Monday, the number gradually decreasing by the end of the week. This phenomenon has long been suggested to be due to the lack of emergency care approach. According to the literature, however, returning to work following a holiday is a risk factor for acute stroke. A similar phenomenon is well-known in veterinary medicine, a condition in horses referred to as ‘Monday morning disease’. In our study, we analysed the distribution of admissions due to acute stroke by the day of the week in 4 independent data sources. Patients and methods - The number of patients admitted to the Szent János Hospital, Budapest, Hungary with stroke and that of emergency ambulance transports in the whole city of Budapest due to acute stroke were analysed in the period between January 1 and March 31, 2009. The distribution of thrombolytic interventions reflecting hospitalizations for hyperacute stroke was analysed based on data of the Szent János Hospital in 2009-2012, and on national data from 2006-2012. Descriptive statistics was used to present the data. The variation between daily admission was compared by chi-square test. Results - The proportion of daily admission of stroke patients admitted to the Szent János Hospital was the highest at the beginning of the week (18% on Monday, and 21% on Tuesday) and the lowest on the weekend (9% and 9% on Saturday and Sunday, respectively). The distribution of ambulance transports in Budapest due to acute stroke tended to be similar (15% and 15% on Monday and Tuesday, whereas 13% and 12% on Saturday and Sunday, respectively) on different days of the week. No such Monday peak could be observed in a single centre regarding thrombolytic interventions: 18% and 19% of the total of 80 thrombolytic interventions in the Szent János Hospital were performed on Monday and Sunday, respectively. At the national level the higher Monday rate is obvious: during a 7-year period 16.0%, 12.7%, and 13.5% of all thrombolytic interventions in Hungary were performed on Monday, Saturday and Sunday, respectively. Conclusion - Monday preference of stroke is not exclusively caused by the lack of emergency care approach, and the phenomenon is not consistent at the individual hospital level in cases undergoing thrombolysis.

Clinical Neuroscience

[Perinatal stroke - from symptoms to follow-up]

VOJCEK Eszter, CSÉCSEI Márta, FLACH Edina, RUDAS Gábor, GRÁF Rózsa, PRINCZKEL Erzsébet

[Background and purpose - We aimed to analyze patient characteristics of term neonates with the diagnosis of stroke between 2006 and 2017 at the 3rd level Neonatal Intensive Care Unit of the Szent János Hospital. Method - We conducted a retrospective and prospective analysis including 18 newborns with stroke. Presentation, imaging methods, etiology and clinical context were discussed. All patients had a follow-up at 2 years of age or later. Subject of the study - In the past 10 years 17 term born and one premature neonate born at 36 weeks of age were diagnosed with stroke in our unit. All patients were born at good condition generally with high Apgar scores (9±1). Cesarean section was performed in 4 cases. Results - With an estimated incidence of one in 1600-4000 births, the incidence of perinatal stroke in our unit was found to be the same as mentioned in the international databeses. Regarding imaging method, cranial ultrasound scan do not visualise arterial ischaemic stroke therefore head MRI is recommended. Neurological symptoms of the patients presented in the first two days of life. Etiology included thrombophilia (4/18), infection (4/18), vascular malformation (2/18), moderate asphyxia (2/18) and pre-eclampsia (2/18). Middle cerebral artery was involved in 50% while the anterior cerebral artery was affected in 33%. The stroke occured in the left hemisphaerium in 44%, in the right side in 39% and was bilateral in 17%. In two cases the stroke was diagnosed in utero. Early childhood developmental support resulted in average or above average gross and fine motor development and cognitive outcome. Conclusion - Presenting neurological symptoms tipically occur in the first few days after birth when perinatal stroke need to be considered among the broad spectrum of neonatal illnesses. Normal developmental outcome can be achieved even in cases of extensive brain damage with early childhood developmental support. Severely impaired development was observed in the cases of in utero stroke. Inherited prothrombotic disorders may have implications for subsequent pregnancies of the mother. ]

Clinical Neuroscience

[The role of Hungarian-rooted scholars in the development of Otoneurology ]

TAMÁS T. László, GARAI Tibor, TOMPOS Tamás, MAIHOUB Stefani, SZIRMAI Ágnes

[Despite of the symptoms of vertigo have been known since thousands of years, it was evident by the research of the pioneer scientists of the 19th century (Flourens, Ménière, Breuer and others) that dizziness can also be attributed to inner ear disfunctions. The discovery of the vestibulo-ocular reflex was an important milestone (Endre Hőgyes, 1884). The vestibulo-ocular reflex stabilizes images on the retina by rotating the eyes at the same speed but in the opposite direction of head motion. The milestone discovery of Hőgyes by stimulating individual labyrinth receptors and recording the activity of eye muscles were verified by János Szentágothai in 1950. Low-frequency lesions of the angular vestibulo-ocular reflex can be investigated by caloric test (Robert Bárány,1906), high-frequency lesions by head impulse test (Gabor Michael Halmagyi and Ian Stewart Curthoys, 1988).]

Clinical Neuroscience

Population-based stroke screening days in the 12th district of Budapest in 2011 and 2016 - What have and what have not changed?

FOLYOVICH András, BOTOS Nóra, BALOGH Erzsébet, BAKOS Mária, HERTELENDY Anna, BÉRES-MOLNÁR Anna Katalin

Introduction - Population-based screening is an option to identify persons at high risk for stroke. However it is associated with rather high expenses, necessitating the selection of effective methods that take local characteristics into account. The 12th district of Budapest has a long tradition of population-based screening for frequent and preventable diseases. The Szent János Hospital hosts an annual stroke screening day. In the present study, previously published data from the 2011 screening were compared with those obtained in 2016, looking for changes and tendencies throughout the examined period. Subjects and methods - The screening day was conducted in a generally similar way in 2011 and 2016. Similarly to the previous event, the program was organized on a Saturday, the call for the event was spread by the local newspaper. The crew composition was the same. As regards the components of the screening (currently including general history taking, risk status assessment, blood pressure measurement, BMI assessment, cholesterol and blood glucose tests, carotid duplex ultrasonography, and ophthalmological examination), the only difference was the absence of cardiologic examination (it was conducted on an independent day). The anonymous data sheet was the same. Results - The number of participants in the 2016 event was 33, to provide more comfortable conditions. The female predominance was slightly less pronounced but was still present in 2016 (60.6% vs. 72.9%). The mean age became substantially higher (71.2 y vs. 62.9 y). The ratios of participants with higher level of education (97% vs. 94%) and those who are married were still remarkable. The most frequent risk factors were the same; however the ratio of participants with hypertension, ‘other heart disease’, and diabetes increased, whereas that of with hyperlipidemia and obesity decreased. The incidence of atrial fibrillation was unaltered. None of the participants in 2016 admitted smoking (previously this ratio was 20.8%) or drinking heavily. The findings of the carotid ultrasonography revealed a more favorable vascular status. Ophthalmological assessments (predominantly hypertensive alterations on fundoscopy) revealed that the pathological vs. physiological ratio switched to 1:2 from 2:1. The final evaluation of the screening program likewise demonstrated an improved overall state of health of the population. Conclusions - We observed a more favorable stroke risk status of the population in 2016. Whether it is indeed a tendency unknown at present. The role of the local media in calling for screening is still decisive, and the cohesive power of the family is important.

Lege Artis Medicinae

[The Private Physician and State Advisor of Tzar Alexander I János Orlay, a Polymath Physician ]

MOLNÁR László