1. Diagnosing and management of thyroid nodules and goiter - current perspectivesKatica Bajuk-Studen, Bartosz Domagała, Simona Gaberšček, Katja Zaletel, Alicja Hubalewska-Dydejczyk, 2025, review article Abstract: Due to the frequent diagnosis of benign thyroid nodules, it is necessary to deviate from the traditional paradigm based on frequent surgical treatment. This article highlights the evolution of diagnosis and treatment in recent years, beginning from standardization of ultrasound assessment of nodules and cytology results to minimally invasive techniques to reduce the size of symptomatic thyroid nodules. These achievements reduce the number of surgeries, enable more individualized care for patients with benign thyroid disease, reduce long-term complications, and promote cost-effectiveness within healthcare systems. Furthermore, although the use of minimally invasive techniques significantly decreases thyroid nodule volume, the thyroid nodule usually does not disappear and the challenges in this field are discussed (the efficacy of thermal ablation, a variable part of thyroid nodules that remains viable after thermal ablation, some of the nodules treated with thermal ablation may require a second treatment over time and the efficacy of thermal ablation in nodules with different phenotypes). However, although surgery still represents the "gold standard" for establishing the final histopathologic diagnosis, it is associated with lifelong thyroid hormone substitution need and serious complications in rare cases. Therefore, it should represent the ultima ratio only after a detailed diagnostic procedure. In the future, artificial intelligence-assisted programs for the evaluation and management of nodules are expected. Keywords: laser ablation, minimally invasive techniques, thyroid nodules, thyroid ultrasound Published in DiRROS: 16.03.2026; Views: 487; Downloads: 359
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2. Enhanced surface engineering of ENB alloy coatings: tribo-mechanical insights into heat treatment and sodium borohydride levelsDuraisamy Revathi Ponnusamy Rajarathnam, S. Senthil Babu, Fatima Firdous Nikhat, M. Selvaraj, R. T. Ajaykarthik, 2025, original scientific article Keywords: optimization, bath composition, elastic modulus, friction resistance, nodules Published in DiRROS: 02.10.2025; Views: 865; Downloads: 491
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3. Nodulation performance and agronomic traits of European common bean (Phaseolus vulgaris L.) genetic resourcesEva Plestenjak, Vladimir Meglič, Lovro Sinkovič, Matevž Likar, Marjana Regvar, Barbara Pipan, 2024, original scientific article Abstract: Field production of common beans benefit from root microbial associations, although they are generally considered to be weaker nitrogen fixers than other legumes. Therefore, the number of nodules on the roots of 64 accessions of the European common bean (Phaseolus vulgaris L.) and the relationship between the number of nodules per accession and other plant characteristics (growth type, earliness, seed yield, and total nitrogen content in seeds) were studied. The results indicated that growth type and earliness influenced the number of nodules per accession (the contributions of principal component analysis were 34.9% for Dim1 and 29.8% for Dim2). The average number of nodules per accession with indeterminate growth type was almost five times higher (20.1) than for accessions with determinate growth type (4.4). Common bean accessions with regular growth cycle length had the highest number of nodules (21.9). In contrast, nodulation efficiency, measured as seed yield per plant and total nitrogen content in seeds, were not correlated with the number of nodules per accession (correlation analysis, r < 0.1). Consequently, data on the nodulation efficiency of European common bean accessions are important for breeding programmes in conjunction with other agronomically important traits for commercial and/or organic cultivation systems. Keywords: agronomic traits, common bean, nitrogen fixation, nodules, symbiotic efficiency Published in DiRROS: 30.09.2024; Views: 1851; Downloads: 498
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4. Can dynamic imaging, using 18F-FDG PET/CT and CT perfusion differentiate between benign and malignant pulmonary nodules?Aleksander Marin, John T. Murchison, Kristopher M. Skwarski, Adriana A.S. Tavares, Alison Fletcher, William A. Wallace, Vladka Salapura, Edwin J.R. Van Beek, Saeed Mirsadraee, 2021, original scientific article Abstract: Background. The aim of the study was to derive and compare metabolic parameters relating to benign and ma- lignant pulmonary nodules using dynamic 2-deoxy-2-[fluorine-18]fluoro-D-glucose (18F-FDG) PET/CT, and nodule perfu- sion parameters derived through perfusion computed tomography (CT). Patients and methods. Twenty patients with 21 pulmonary nodules incidentally detected on CT underwent a dynamic 18F-FDG PET/CT and a perfusion CT. The maximum standardized uptake value (SUVmax) was measured on conventional 18F-FDG PET/CT images. The influx constant (Ki) was calculated from the dynamic 18F-FDG PET/CT data using Patlak model. Arterial flow (AF) using the maximum slope model and blood volume (BV) using the Patlak plot method for each nodule were calculated from the perfusion CT data. All nodules were characterized as malignant or benign based on histopathology or 2 year follow up CT. All parameters were statistically compared between the two groups using the nonparametric Mann-Whitney test. Results. Twelve malignant and 9 benign lung nodules were analysed (median size 20.1 mm, 9-29 mm) in 21 patients (male/female = 11/9; mean age +- SD: 65.3 +- 7.4; age range: 50-76 years). The average SUVmax values +- SD of the benign and malignant nodules were 2.2 +- 1.7 vs. 7.0 +- 4.5, respectively (p = 0.0148). Average Ki values in benign and malig- nant nodules were 0.0057 +- 0.0071 and 0.0230 +- 0.0155 min-1, respectively (p = 0.0311). Average BV for the benign and malignant nodules were 11.6857 +- 6.7347 and 28.3400 +- 15.9672 ml/100 ml, respectively (p = 0.0250). Average AF for the benign and malignant nodules were 74.4571 +- 89.0321 and 89.200 +- 49.8883 ml/100g/min, respectively (p = 0.1613). Conclusions. Dynamic 18F-FDG PET/CT and perfusion CT derived blood volume had similar capability to differentiate benign from malignant lung nodules. Keywords: CT perfusion, malignant pulmonary nodules, benign pulmonary nodules Published in DiRROS: 22.07.2024; Views: 1233; Downloads: 421
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