Asunto(s)
Cromosomas Humanos Par 8/genética , Lipoblastoma/diagnóstico por imagen , Lipoblastoma/genética , Neoplasias Primarias Múltiples/genética , Osteocondroma/diagnóstico por imagen , Osteocondroma/genética , Diagnóstico Diferencial , Predisposición Genética a la Enfermedad/genética , Humanos , Imagen por Resonancia Magnética/métodos , Masculino , Neoplasias Primarias Múltiples/diagnóstico por imagen , Neoplasias Primarias Múltiples/patología , Telómero/genética , Adulto JovenAsunto(s)
Implantes Absorbibles/efectos adversos , Reconstrucción del Ligamento Cruzado Anterior/efectos adversos , Tornillos Óseos/efectos adversos , Osteítis/diagnóstico , Osteítis/etiología , Tibia/patología , Adulto , Reconstrucción del Ligamento Cruzado Anterior/instrumentación , Remoción de Dispositivos , Diagnóstico Diferencial , Femenino , Humanos , Imagen por Resonancia Magnética/métodos , Osteítis/cirugía , Infecciones Relacionadas con Prótesis/diagnóstico , Infecciones Relacionadas con Prótesis/etiología , Infecciones Relacionadas con Prótesis/cirugía , Tibia/diagnóstico por imagen , Tomografía Computarizada por Rayos X/métodosRESUMEN
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.
Asunto(s)
Biopsia Guiada por Imagen/métodos , Imagen por Resonancia Magnética Intervencional/métodos , Próstata/patología , Neoplasias de la Próstata/patología , Adulto , Anciano , Austria , Diagnóstico Diferencial , Humanos , Masculino , Persona de Mediana Edad , Hiperplasia Prostática/patología , Estudios Retrospectivos , Sensibilidad y EspecificidadRESUMEN
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.
Asunto(s)
Aumento de la Imagen , Procesamiento de Imagen Asistido por Computador , Enfermedades Pulmonares/diagnóstico , Neoplasias Pulmonares/diagnóstico , Imagen por Resonancia Magnética , Tomografía Computarizada Espiral , Adolescente , Niño , Preescolar , Diagnóstico Diferencial , Femenino , Humanos , Lactante , Recién Nacido , Pulmón/patología , Enfermedades Pulmonares/congénito , Neoplasias Pulmonares/congénito , Neoplasias Pulmonares/secundario , Masculino , Sensibilidad y EspecificidadRESUMEN
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.
Asunto(s)
Servicio de Urgencia en Hospital , Traumatismo Múltiple/diagnóstico por imagen , Manejo de Atención al Paciente , Tomografía Computarizada por Rayos X/métodos , Humanos , Procesamiento de Imagen Asistido por ComputadorRESUMEN
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.