971 resultados para ATA (tavaramerkki)
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O objetivo deste trabalho foi estabelecer um protocolo para a enxertia precoce de pinheira em porta-enxertos produzidos em tubetes como substituto do tradicional sistema de enxertia que utiliza porta-enxertos de 12 meses produzidos em sacolas plásticas. O trabalho foi conduzido com três métodos de enxertia (borbulhia em escudo, garfagem de topo em fenda cheia e garfagem lateral em fenda cheia) e quatro idades dos porta-enxertos (3; 5; 7 e 9 meses). Os porta-enxertos foram avaliados durante nove meses com relação às variáveis: comprimento da planta, diâmetro do caule, número de folhas e área foliar. Cada procedimento de enxertia foi avaliado por 30 dias através da percentagem de pegamento. Os porta-enxertos produzidos nos tubetes maiores apresentaram-se mais desenvolvidos para todas as variáveis, todavia a percentagem de pegamento dos enxertos foi mais influenciada pelo método de enxertia do que pelo tamanho de tubete. A garfagem de topo em fenda cheia mostrou-se como o melhor método para a enxertia precoce, pois já aos três meses de idade dos porta-enxertos apresentou taxa de pegamento de 96,69%. O método de garfagem lateral em fenda cheia apresentou taxas semelhantes a partir dos cinco meses de idade dos porta-enxertos. O método de borbulhia apresentou baixo pegamento inicial (<50%), mas a cada nova data de enxertia o pegamento foi aumentando e atingiu valores superiores a 80% aos sete meses de idade.
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BACKGROUND: The measurement of calcitonin in washout fluids of thyroid nodule aspirate (FNA-calcitonin) has been reported as accurate to detect medullary thyroid carcinoma (MTC). The results from these studies have been promising and the most updated version of ATA guidelines quoted for the first time that "FNA findings that are inconclusive or suggestive of MTC should have calcitonin measured in the FNA washout fluid." Here we aimed to systematically review published data on this topic to provide more robust estimates. RESEARCH DESIGN AND METHODS: A comprehensive computer literature search of the medical databases was conducted by searching for the terms "calcitonin" AND "washout." The search was updated until April 2015. RESULTS: Twelve relevant studies, published between 2007 and 2014, were found. Overall, 413 thyroid nodules or neck lymph nodes underwent FNA-calcitonin, 95 were MTC lesions and 93 (97.9%) of these were correctly detected by this measurement regardless of their cytologic report. CONCLUSIONS: The present study shows that the above ATA recommendation is well supported. Almost all MTC lesions are correctly detected by FNA-calcitonin and this technique should be used to avoid false negative or inconclusive results from cytology. The routine determination of serum calcitonin in patients undergoing FNA should improve the selection of patients at risk for MTC, guiding the use of FNA-calcitonin in the same FNA sample and providing useful information to the cytopathologist for the morphological assessment and the application of tailored ancillary tests.
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Purpose: We aimed to determine the impact of SPECT/CT performed in addition to whole-‐body scintigraphy augmented with prone lateral views in patients with well-‐differentiated thyroid carcinoma. Methods and Materials: This retrospective study included 141 patients (87 female, 54 male, mean age 47 years) with well-‐differentiated thyroid carcinoma (105 papillary, 31 follicular, 1 Hürthle cell and 4 poorly differentiated) treated with radioiodine therapy (1000-7400 MBq). Patients were referred for either first postsurgical therapy (n=76) or further treatment (n=65). Two nuclear medicine physicians interpreted the scans in consensus (first whole-‐body scintigraphy with prone lateral view, then SPECT/CT) reporting abnormal iodine uptake in the thyroid bed, lymph nodes and distant metastasis. The corresponding ATA risk score was calculated for each patient before and after SPECT/CT, as well as change in disease extension Results: The analysis showed a difference between scintigraphy and SPECT/CT in n=17 lesions in 14 patients (9.9%): 12 were described as suspicious on scintigraphy and could be considered as benign on SPECT/CT (3 corresponded to local iodine uptake, 6 to lymph nodes metastases and 3 to distant metastases). The others 5 corresponded to metastases (4 lymph nodes and 1 distant) that were not seen on whole-‐body scintigraphy augmented with prone lateral views. In 10 of 141 (7.1%) patients, we observed a change in ATA risk stratification, with a risk increase in 4 of them (2.8%). Conclusion: SPECT/CT allowed detecting 5 focal lesions missed on planar scintigraphy, and to precise benignity of 12 suspicious lesions on planar scintigraphy. Moreover, SPECT/CT improved the risk stratification in 10 patients with a significant change in the patient management
Resumo:
A class of three-sided markets (and games) is considered, where value is generated by pairs or triplets of agents belonging to different sectors, as well as by individuals. For these markets we analyze the situation that arises when some agents leave the market with some payoff To this end, we introduce the derived market (and game) and relate it to the Davis and Maschler (1965) reduced game. Consistency with respect to the derived market, together with singleness best and individual anti-monotonicity axiomatically characterize the core for these generalized three-sided assignment markets. These markets may have an empty core, but we define a balanced subclass, where the worth of each triplet is defined as the addition of the worths of the pairs it contains. Keywords: Multi-sided assignment market, Consistency, Core, Nucleolus. JEL Classification: C71, C78
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kuv., 13 x 21 cm
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kuv., 21 x 18 cm
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kuv., 22 x 17 cm
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kuv., 22 x 27 cm
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kuv., 21 x 27 cm
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kuv., 22 x 27 cm
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kuv., 11 x 17 cm
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kuv., 21 x 29 cm
