Assuntos
Cromossomos Humanos Par 8/genética , Lipoblastoma/diagnóstico por imagem , Lipoblastoma/genética , Neoplasias Primárias Múltiplas/genética , Osteocondroma/diagnóstico por imagem , Osteocondroma/genética , Diagnóstico Diferencial , Predisposição Genética para Doença/genética , Humanos , Imageamento por Ressonância Magnética/métodos , Masculino , Neoplasias Primárias Múltiplas/diagnóstico por imagem , Neoplasias Primárias Múltiplas/patologia , Telômero/genética , Adulto JovemAssuntos
Implantes Absorvíveis/efeitos adversos , Reconstrução do Ligamento Cruzado Anterior/efeitos adversos , Parafusos Ósseos/efeitos adversos , Osteíte/diagnóstico , Osteíte/etiologia , Tíbia/patologia , Adulto , Reconstrução do Ligamento Cruzado Anterior/instrumentação , Remoção de Dispositivo , Diagnóstico Diferencial , Feminino , Humanos , Imageamento por Ressonância Magnética/métodos , Osteíte/cirurgia , Infecções Relacionadas à Prótese/diagnóstico , Infecções Relacionadas à Prótese/etiologia , Infecções Relacionadas à Prótese/cirurgia , Tíbia/diagnóstico por imagem , Tomografia Computadorizada por Raios X/métodosRESUMO
OBJECTIVES: To evaluate the detection rate of prostate cancer (PCa) after magnetic resonance-guided biopsy (MRGB); to monitor the patient cohort with negative MRGB results and to compare our own results with other reports in the current literature. MATERIALS AND METHODS: A group of 41 patients was included in this IRB-approved study and subjected to combined MRI and MRGB. MRGB was performed in a closed 1.5âT MR unit and the needle was inserted rectally. The follow-up period ranged between 12 and 62 months (mean 3.1 years). To compare the results with the literature, a systematic literature search was performed. Eighteen publications were evaluated. RESULTS: The cancer-suspicious regions were punctured successfully in all cases. PCa was detected in eleven patients (26.9â%) who were all clinically significant. MRGB showed a benign histology in the remaining 30 patients. In the follow-up (mean 3.1 years) of patients with benign histology, no new PCa was diagnosed. The missed cancer rate during follow-up was 0.0â% in our study. CONCLUSION: MRGB is effective for the detection of clinically significant cancer, and this is in accordance with the recent literature. In the follow-up of patients with benign histology, no new PCa was discovered. Although the probability of developing PCa after negative MRGB is very low, active surveillance is reasonable.
Assuntos
Biópsia Guiada por Imagem/métodos , Imagem por Ressonância Magnética Intervencionista/métodos , Próstata/patologia , Neoplasias da Próstata/patologia , Adulto , Idoso , Áustria , Diagnóstico Diferencial , Humanos , Masculino , Pessoa de Meia-Idade , Hiperplasia Prostática/patologia , Estudos Retrospectivos , Sensibilidade e EspecificidadeRESUMO
Pulmonary tumors in children are rare. Nevertheless, there are besides malign primary neoplasms and metastases also some benign tumors that the radiologist should know. The identification of some tumors is difficult, since some of them may mimic pulmonary inflammation. The first diagnostic tool is chest radiography. After that, a CT with contrast medium should be performed, if possible a multislice-CT (MSCT). Identification of mediastinal structures is best with MRI.
Assuntos
Aumento da Imagem , Processamento de Imagem Assistida por Computador , Pneumopatias/diagnóstico , Neoplasias Pulmonares/diagnóstico , Imageamento por Ressonância Magnética , Tomografia Computadorizada Espiral , Adolescente , Criança , Pré-Escolar , Diagnóstico Diferencial , Feminino , Humanos , Lactente , Recém-Nascido , Pulmão/patologia , Pneumopatias/congênito , Neoplasias Pulmonares/congênito , Neoplasias Pulmonares/secundário , Masculino , Sensibilidade e EspecificidadeRESUMO
Trauma is the fifth leading cause of death after disease of the cardiovascular system, malignomas and disease of the respiratory and digestive system. The management of severely injured patients, including radiological imaging, is a matter of ongoing development. In particular, as for the imaging modalities, multidetector-row CT represents a substantial refinement in the diagnostic work-up of multitrauma patients. Sufficient therapy within the first hour after trauma increases the patient's chances for survival significantly. Thus, therapeutic procedures and diagnostic evaluation have to be concomitant events, performed by a multidisciplinary team, namely trauma surgeon, anesthesiologist and, last but not least, radiologist. The increased performance of multidetector-row CT leads to increased spatial resolution, which is a prerequisite for sophisticated two- and three-dimensional postprocessing. The increased volume coverage speed allows for comprehensive whole-body CT at still high levels of spatial resolution, resulting in significant spare of time which influences patient's survival. Using this technique conventional imaging such as plane film or angiography may be omitted.
Assuntos
Serviço Hospitalar de Emergência , Traumatismo Múltiplo/diagnóstico por imagem , Administração dos Cuidados ao Paciente , Tomografia Computadorizada por Raios X/métodos , Humanos , Processamento de Imagem Assistida por ComputadorRESUMO
Two different plants in different scales were compared. The main characteristic of the plants is the division of the nitrification volume into separate chambers. To gain more information about the internal conversion processes, concentration profiles of COD, NO3-N and NH4-N along the pathway of the waste water were measured. Moreover, the effect of different plant configurations and different operation conditions involving the internal circulation streams on the biological conversion processes were studied. Except for some temporary operation problems, the treatment performance of the plants was very stable and on a high level. There was a high correspondence between the plants. Operation without internal recirculation leads to lower effluent concentrations of ammonium. Beside this, operation of several nitrification chambers instead of only one chamber results in lower ammonium effluent concentrations.