Desenvolvimento de um tomógrafo de ressonância magnética: integração e otimização. / Development of a magnetic resonance tomograph: integration and improvement.

AUTOR(ES)
DATA DE PUBLICAÇÃO

1995

RESUMO

The present work describes the development of a Magnetic Resonance Tomography system to be used for medical diagnostics. It is based on commercially available subsystems such as used as in commercial MRI equipments. The main contributions to the project were: the development of fill up electronics and software needed to turn the acquired hardware into a MR Tomography for medical diagnostics. This includes not only the design of complex software needed to generate the used RF pulses, gradient waveforms, data acquisition system and the desired pulse sequences to synchronize all, but also the development of a user friendly interface to do: the entrance of patients information; the selection of MR imaging techniques and interactive software for image viewing and planes selection. A new data compression algorithm to reduce the storage requirement of raw MR image data without information losses is also presented and implemented. A comparison with others general purpose compression implementations is presented to show the superior performance in the compression rate and execution time.

ASSUNTO(S)

rf modulation dds gradient waveform generation spectrometer tomograph gerador de formas de onda magnetic resonance gradientes dds data compression compresssão de dados espectrômetro geração e modulação rf ressonância magnética tomógrafo

ACESSO AO ARTIGO

Documentos Relacionados