Publications by authors named "Viera Lehotska"

Optimization in mammography remains the most important tool in practice. In the optimization process, we look for a balanced relationship between image quality and patient dose. For mammographic examinations, the diagnostic reference levels (DRLs) are expressed as the average glandular dose (AGD) based on the thickness of the compressed breast.

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(1) Teeth, in humans, represent the most resilient tissues. However, exposure to concentrated acids might lead to their dissolving, thus making human identification difficult. Teeth often contain dental restorations from materials that are even more resilient to acid impact.

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A 33-year-old man with obesity, systemic arterial hypertension, and psoriasis who had been treated previously with little success by a pulmonologist for chronic unproductive irritant cough came to the outpatient pulmonary department because of profuse cough and short syncope (probably cough-induced). Chest radiography revealed widened mediastinum with lobular, polycyclic contours that was suspected to be a large mediastinal lymphadenopathy or mediastinal mass.

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Objectives: To present a rare variant of internal carotid artery anatomy.

Methods: Case report presenting CT angiography finding of internal carotid anatomy variant.

Results: We present the case of an unusual origin of the occipital artery from cervical portion of the internal carotid artery as an incidental finding during CT angiography of the carotid arteries.

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Neuroendocrine neoplasms comprise an ever greater ratio of primary gastrointestinal tract tumors, thanks to the improving diagnostics. The clinical presentation can be quite diverse depending on the type of the tumor. Imaging methods - both the spectrum of radiological methods and methods of nuclear medicine - are an integral part of the diagnostics.

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Following orchiectomy, patients with clinical stage I (CSI) testicular seminoma may be managed by active surveillance (S) or adjuvant treatment (radiotherapy or chemotherapy). In view of the published data on long-term toxicity, especially second malignant neoplasms (SMNs), adjuvant radiotherapy (ART) is currently no longer recommended as an adjuvant therapy option for these patients. The purpose of our recent study was to compare the impact of two selected treatment approaches - S versus adjuvant chemotherapy (ACT) on the survival of patients with CSI testicular seminoma.

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Objective: To assess the concordance of in-utero magnetic resonance imaging (MRI) findings at 3.0T in fetuses with suspect abnormalities of the central nervous system (CNS) on ultrasonography.

Methods: A retrospective study was done on 222 pregnant women indicated for fetal MRI, with the examination performed within 2 weeks from indication.

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Purpose: To evaluate the patient and the neurointerventionalist radiation dose levels during endovascular treatment of acute ischemic stroke, and to analyze factors affecting doses.

Materials And Methods: From October 2017 to January 2019, we prospectively collected patient radiation data and neurointerventionalist data from real-time dosimetry from all consecutive thrombectomies. Multivariate analysis was performed to analyze patient total dose area product (DAP) and neurointerventionalist dose variability in terms of clinical characteristics and the technical parameters of thrombectomies.

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A case of fibrocartilaginous embolization in 24-year-old female as a rare cause of spinal cord infarction is presented. It manifests as infarction syndrome with rapid progression of clinical signs - acute onset of quadriparesis and respiratory insufficiency. Among imaging studies MRI is the most accurate as it readily capable of detection of myelopathy and acute intervertebral disc lesion.

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Objectives: The aim of the study was to evaluate the CT features of adrenal tumors in an effort to identify features specific to pheochromocytomas and second, to define a feasible probability calculation model.

Methods: This multicentric retrospective study included patients from the period 2003 to 2017 with an appropriate CT examination and a histological diagnosis of an adrenal adenoma, pheochromocytoma, adrenocortical carcinoma, or metastasis. In total, 346 patients were suitable for the CT image analysis, which included evaluation of the largest diameter, the shape of the lesion, the presence of central necrosis and its margins, and the presence of an enhancing peripheral rim ("ring sign").

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Background: Surveillance after orchiectomy alone has become popular in the management of clinical stage I nonseminomatous germ cell testicular tumors (CSI NSGCTT). Efforts to identify patients at high risk of disease progression led to a search for risk factors in CSI NSGCTT. The aim of this study was to analyze a 25-year single-center experience with risk-adapted therapeutic approaches-active surveillance (AS) versus adjuvant chemotherapy (ACT).

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Introduction: Following orchiectomy patients with clinical stage I (CSI) testicular seminoma may be managed by active surveillance (AS) or adjuvant treatment (radiotherapy or chemotherapy). In view of the published data on long-term toxicity, mainly second malignant neoplasms (SMNs), adjuvant radiotherapy (ART) is currently no longer recommended as adjuvant therapy for these patients. The purpose of our recent study was to compare the impact of two selected treatment approaches - AS versus adjuvant chemotherapy (ACT) on survival in patients with CSI testicular seminoma.

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Purpose: To find the diagnostic accuracy of 3T multiparametric magnetic resonance imaging (mpMRI) and mpMRI targeted transrectal ultrasound (TRUS)-guided biopsy using visual coregistration (TB) in patients with elevated prostate-specific antigen (PSA), normal digital rectal examination, and no previous biopsy.

Materials And Methods: Fifty-five patients at two institutions underwent mpMRI, consisting of anatomical T2 -weighted imaging (T2 W), diffusion-weighted imaging (DWI), proton magnetic resonance spectroscopy ((1) H-MRS), and dynamic contrast-enhanced MRI (DCE-MRI), followed by TB in addition to 12 core systematic TRUS-guided biopsy (SB). Histopathological scorings of biopsy (n = 38) and prostatectomy (n = 17) specimens were used as the reference standard for calculation of diagnostic accuracy values.

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