403 resultados para Radiopharmaceutical 18F-FDG


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The aim of this study was to confirm the effectiveness of early physiotherapeutic stimulation for lymphatic flaw progression in patients with breast cancer undergoing axillary dissection This was a randomized experimental study oil 22 patients who underwent lymphoscintigraphy in their arms on two different occasions, firstly without stimulation and secondly after randomization into two groups without physiotherapeutic stimulation (WOPS, n=10) and with physiotherapeutic stimulation (WPS, n=12) The lymphoscintigraphy scan was performed with (99m)Tc-phytate administered into the second interdigital space of the hand, ipsilaterally to the dissected axilla, in three phases dynamic, static, and delayed whole body imaging Physiotherapeutic stimulation was earned out using Foldi's technique In both groups, images from the two examinations of each patient were compared Flow progression was considered positive when, on the second damnation, the radiopharmaceutical reached areas more distant from the injection site Statistical analysis was used to evaluate frequencies, percentages and central trend measurements, and non-parametric tests were conducted Descriptive analysis showed that the WPS and WOPS groups were similar M terms of mean age, weight, height, body mass index and number of lymph nodes removed There were statistically significant associations between physiotherapeutic stimulation and radiopharmaceutical progression at all three phases of the study (p < 0 0001) Early physiotherapeutic stimulation in beast cancer patients undergoing radical axillary dissection is effective, and can therefore be indicated as a preventive measure against lymphedema

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A ordenação de constituintes oracionais nas variedades portuguesas é aqui tratada considerando-se três moldes de conteúdo, Tético, Apresentativo e Categorial. A linearização das estruturas oracionais refletem decisões assumidas na formulação do Nível Interpessoal e configuram predominantemente Molde de Conteúdo Categorial Tópico-orientado, com o constituinte Tópico ocupando a posição P I, a palavra verbal, a posição P M, e os outros constituintes, as posições à direita e à esquerda de P M. em Construções Téticas, a oração toda, por ser focal, ocupa o domínio de P F, já em Construções Apresentativas a cópula vazia assume a posição absoluta P M, e o sintagma nominal Tópico/Foco posiciona-se em P F.

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Purpose: Testicular tumors do not occur frequently. Primary treatment is surgical, and radiotherapy and chemotherapy can play important roles in cases of metastatic disease. Bone scintigraphy is used largely for early detection of skeletal metastases from several tumors, and conventional radiographic studies are less sensitive than the nuclear technique for such a purpose. The aim of this study was to identify the role of bone scintigraphy in cases of testicular tumors, regardless of the grade. Materials and Methods: The authors examined 28 patients (8 to 52 years old) with proved testicular tumors using Tc-99m MDP (750 MBq; 20 mCi) injected intravenously. Whole-body images were obtained 2 hours later, at 500,000 counts per image. Radiographic studies were obtained to investigate abnormal areas noted on scintigraphy. Results: The results of bone scintigraphy were abnormal in seven cases, consisting of variable but diffuse uptake in the iliac bone on the same side as the affected testicle. MDP uptake was substantial in five of these patients (four seminomas, one nonseminoma; only two radiographic studies were abnormal), and the two other patients had moderate uptake of the radiopharmaceutical (two seminomas; radiographic studies were normal). Metastases were confirmed by biopsy in three cases. Discussion: Early metastases from seminomas can occur through the lymphatic drainage toward the iliac lymph node chain. This could explain these findings. The scintigraphic aspects of the affected iliac bones seem characteristic. Conclusions: Early detection of metastases is very important to ensure the efficacy of radiotherapy and chemotherapy. Bone scintigraphy may play an important role in such cases and seems to be more sensitive than conventional radiography. Testicular tumor metastases should be considered when iliac involvement is observed. Paget's disease should be included in a differential diagnosis.

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To describe the preoperative upper limb lymphoscintigraphic pattern in women with breast cancer. Thirty-seven patients undergoing lymphoscintigraphy within 30 days of surgery were investigated. Lymphoscintigraphic studies of 37 upper limbs ipsilateral to surgery and 32 contralateral upper limbs were performed. The examination protocol consisted in obtaining static images of the upper limb in semi-flexion after 10 minutes, and 1 and 2 hours after subcutaneous injection of 1 mCi (37 MBq) of Tc-99m-dextran in the dorsum of the hand. The velocity of axillary lymph node visualization (I, visible at 10 minutes; II, 1 hour; III, 2 hours; and IV, invisible) and degree (intensity) of nodal uptake (a, marked; b, moderate; c,mild; and d, absent) were analyzed. Optimal lymphatic functional pattern (Ia) was observed in four (11%) patients, in the ipsilateral upper limb, and six (19%), in the contralateral upper limb. Worse condition was observed in three (8%) patients (IVd) in the ipsilateral upper limb and two (6%) patients in the contralateral upper limb. The remaining patients showed intermediate states of velocity and uptake intensity. This study found relevant changes in preoperative lymphoscintigraphy, demonstrating preexisting functional differences in the lymphatic system.

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Pós-graduação em Estudos Linguísticos - IBILCE

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Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

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Pós-graduação em Estudos Linguísticos - IBILCE

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Pós-graduação em Estudos Linguísticos - IBILCE

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Pós-graduação em Estudos Linguísticos - IBILCE

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Valency is an inherent property of nominalizations representing higher-order entities, and as such it should be included in their underlying representation. On the basis of this assumption, I postulate that cases of non-overt arguments, which are very common in Brazilian Portuguese and in many other languages of the world, should be considered a special type of valency realization. This paper aims to give empirical support to this postulate by showing that non-overt arguments are both semantically and pragmatically motivated. The semantic and pragmatic motivations for non-overt arguments may be accounted for by the dynamic implementation of the FDG model. I argue that the way valency is realized by means of non-overt arguments suggests a strong parallelism between nominalizations and other types of non-finite embedded constructions – like infinitival and participial ones. By providing empirical evidence for this parallelism I arrive at the conclusion that there are at least three kinds of non-finite embedded constructions, rather than only two, as suggested by Dik (1997).

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This paper deals with the (im)possibility of expressing a variety of modal categories within the context of the layering approach to complementation in Functional Discourse Grammar (FDG).Our hypothesis is that modal expressions in complement clauses only pertain to operator or modifier classes of the highest layer relevant for that type of embedded construction and for all lower levels. In order to test this hypothesis, occurrences of complement clauses in two databases of spoken Brazilian Portuguese are analyzed. The investigation of this hypothesis is restricted to representational complement clauses.

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Pós-graduação em Estudos Linguísticos - IBILCE

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Pós-graduação em Estudos Linguísticos - IBILCE

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The modal distinctions proposed by Hengeveld (2004), reexamined by Hengeveld and Mackenzie (2008) within the Functional Discourse Grammar (FDG), consider the existence of five types of modality: facultative, deontic, volitive, epistemic and evidential. Taking into special account the deontic modality, there are evidences that it can be subdivided into objective and subjective, as analyzed by Olbertz and Gasparini-Bastos (2013) in auxiliary constructions of spoken Spanish. This wok aims to investigate the contextual elements that favor the interpretation of these two values when they are expressed by the modal auxiliary verb “dever” (must) in spoken Portuguese data.