Hungarian Radiology

[Technical aspects of MR urography based on two cases]

HORVÁTH László, BOGNER Péter, NAGY Gyöngyi, BAJZIK Gábor, VANDULEK Csaba, REPA Imre

OCTOBER 20, 2007

Hungarian Radiology - 2007;81(05-06)

[Intravenous urography has been the gold standard in diagnostic radiology studying the urogeintal system. However, ultrasound and other cross-sectional imaging methods have brought major change in this area. Beside modern (multislice) CT examinations the methods of MR urography are more frequently applied making possible both static and dynamic examinations beyond the wellknown advantages of MR imaging. The authors describe two complemetary methods of MR urography which provide a complete evaluation of the urinary system. The first method is aimed to image stationary fluid by using heavily T2 weighted turbo spin echo pulse sequences. This measurement well depicts the dilations of the excretory system even with little or no excretion of urine. The second method is analogous with the traditional IVU, as the excretion of a less nephrotoxic gadolinium based contrast medium followed by a T1 weighted gradient echo pulse sequence (possibly dynamic) helps to visualise the renal cavities and the urinary pathways. Normal renal function is a prerequisite when using this technique in order to visualise normal and obstructed urinary pathway disorders. The use of MR urography together with traditional MR methods may significantly reduce the number of invasive examinations and methods based on X-ray radiation exposure. MR urography may be exceptionally important in the uroradiological study of distensions of renal cavities in pediatric cases, pregnant women and renal transplant patients or in case of contrast material allergy.]

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[MRI-guided prostate brachytherapy: First Hungarian experiences based on a canine study]

LAKOSI Ferenc, ANTAL Gergely, VANDULEK Csaba, KOTEK Gyula, KOVÁCS Árpád, GARAMVÖLGYI Rita, PETNEHÁZY Örs, HADJIEV Janaki, BAJZIK Gábor, BOGNER Péter, REPA Imre

[INTRODUCTION - Modern radical radiotherapy can be an effective alternative of radical prostatectomy in low risk patients with prostate tumor. Our objective was to demonstrate the feasibility of transperineal MR-guided prostate interventions in an open MR unit and to present our early clinical experiences on canines. METHODS AND MATERIALS - The procedures were performed on 5 canines in an open-configuration 0.35T MR scanner. For interventions an MR compatible custom-made device was used. The canines were placed in the right lateral decubitus position. Template reconstruction, trajectory planning, target and OAR delineation were based on T2 FSE images. For image guidance and target confirmation, fast spoiled gradient-echo (FSPGR) sequence was used. MR compatible coaxial needles were inserted through the perineum to the base of the prostate. After satisfactory position was confirmed, brachytherapy catheters were placed through the coaxial needles, which were then removed. RESULTS - Mean and standard deviation of the needle displacements was 2.2 mm±1.2 mm, with a median of 2 mm. 96% of the errors were less than 4.0 mm. Implantation induced prostate motion was measured with a mean of 10.3 and 2.3 mm in cranio-caudal and transverse directions. Significant movement was only observed during the first 4 needle insertions. The average time needed for each step was: anesthesia 15 minutes, setup and positioning 15 minutes, initial imaging 15 minutes, template registration and projection 15 minutes, contouring, trajectory planning, insertion of 10 needles 60 minutes. CONCLUSION - Based on our canine model experiences our method seems to be a promising approach for performing feasible, accurate, reliable and high-quality prostate MR guidance within a reasonable time span. We plan to introduce MR-guided biopsy and brachytherapy in human patients in the near future.]

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Hungarian Radiology

[Prenatal detection of campomelic dysplasia by sonography]

NAGY Gábor, VRECZENÁR László

[INTRODUCTION - The campomelic dysplasia is a disorder characterized by short and bowed lower limbs resulting in dwarfism. CASE REPORT - In the case of a 21-year-old primipara woman the second screening ultrasonography raised the suspicion of short and bowed lower limbs of the fetus, at the 19th week of the pregnancy. Repeated examinations proved the presence of short and bowed femurs and tibias and abnormal echogenecity of the bones. The upper limbs were almost normal in length. During the 19th week of pregnancy, after a genetic analysis in agreement of the parents the pregnancy was interrupted without any complication. Photography and Xray of the fetus confirmed the diagnosis. CONCLUSION - Fetal ultrasonography should include exact size measurement and observation of the shape of the long bones, making possible the early detection of limb anomalies. The anomaly being proven by positive genetic analysis the pregnancy can be interrupted at the parents' request.]

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Clinical Neuroscience

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ALTAY Servet, GÜRDOGAN Muhammet, KAYA Caglar, KARDAS Fatih, ZEYBEY Utku, CAKIR Burcu, EBIK Mustafa, DEMIR Melik

Delirium is a syndrome frequently encountered in intensive care and associated with a poor prognosis. Intensive care delirium is mostly based on general and palliative intensive care data in the literature. In this study, we aimed to investigate the incidence of delirium in coronary intensive care unit (CICU), related factors, its relationship with inhospital and follow up prognosis, incidence of age-related delirium and its effect on outcomes. This study was conducted with patients hospitalized in CICU of a tertiary university hospital between 01 August 2017 and 01 August 2018. Files of all patients were examined in details, and demographic, clinic and laboratory parameters were recorded. Patients confirmed with psychiatry consultation were included in the groups of patients who developed delirium. Patients were divided into groups with and without delirium developed, and baseline features, inhospital and follow up prognoses were investigated. In addition, patients were divided into four groups as <65 years old, 65-75 yo, 75-84 yo and> 85 yo, and the incidence of delirium, related factors and prognoses were compared among these groups. A total of 1108 patients (mean age: 64.4 ± 13.9 years; 66% men) who were followed in the intensive care unit with variable indications were included in the study. Of all patients 11.1% developed delirium in the CICU. Patients who developed delirium were older, comorbidities were more frequent, and these patients showed increased inflammation findings, and significant increase in inhospital mortality compared to those who did not develop delirium (p<0.05). At median 9-month follow up period, rehospitalization, reinfarction, cognitive dysfunction, initiation of psychiatric therapy and mortality were significantly higher in the delirium group (p<0.05). When patients who developed delirium were divided into four groups by age and analyzed, incidence of delirium and mortality rate in delirium group were significantly increased by age (p<0.05). Development of delirium in coronary intensive care unit is associated with increased inhospital and follow up morbidity and mortality. Delirium is more commonly seen in geriatric patients and those with comorbidity, and is associated with a poorer prognosis. High-risk patients should be more carefully monitored for the risk of delirium.

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Clinical Neuroscience

Isolated hypoglossal nerve palsy due to a jugular foramen schwannoma

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Introduction – Although the involvement of the hypoglossal nerve together with other cranial nerves is common in several pathological conditions of the brain, particularly the brainstem, isolated hypoglossal nerve palsy is a rare condition and a diagnostic challenge. Case presentation – The presented patient arrived to the hospital with a history of slurred speech and an uncomfortable sensation on his tongue. Neurological examination showed left-sided hemiatrophy of the tongue with fasciculations and deviation towards the left side during protrusion. Based on the clinical and MRI findings, a diagnosis of hypoglossal nerve schwannoma was made. Discussion – Hypoglossal nerve palsy may arise from multiple causes such as trauma, infections, neoplasms, and endocrine, autoimmune and vascular pathologies. In our case, the isolated involvement of the hypoglossal nerve was at the skull base segment, where the damage to the hypoglossal nerve may occur mostly due to metastasis, nasopharyngeal carcinomas, nerve sheath tumors and glomus tumors. Conclusion – Because of the complexity of the region’s anatomy, the patient diagnosed with hypoglossal nerve schwannoma was referred for gamma knife radiosurgery.