Tractography from Saturn

Tractography over a heart

Whole brain tractography

Laboratorio de Procesado de Imagen

(Image Processing Lab)
E.T.S.I. Telecomunicación
Campus Miguel Delibes s/n
Universidad de Valladolid
47011 Valladolid, Spain
contact@lpi.tel.uva.es

LPI at ISBI 2017 in Melbourne

[24 Apr 2017]

The LPI was present in 2017 IEEE International Symposium on Biomedical Imaging (ISBI), hold in April at Melbourne. ISBI is a joint initiative of the IEEE Signal Processing Society (SPS) and IEEE Engineering in Medicine and Biology Society (EMBS).  A full communication was sent to the conference, presented in a poster session, entitled Groupwise Non-Rigid Registration on Multiparametric Abdominal DWI Acquisitions for Robust ADC Estimation: Comparison with Pairwise Approaches and Different Multimodal Metrics.

Libstable: Fast, Parallel and High-Precision Computation of alpha-Stable Distributions in R, C/C++ and MATLAB.

α-stable distributions are a family of well-known probability distributions. However, the lack of closed analytical expressions hinders their application. Libstable consists of an R package, a C/C++ library and a MATLAB front-end that permits fully parallelized, fast and high precision evaluation of density, distribution and quantile functions , random variable generation and parameter estimation of α-stable distributions in their whole parameter space. The library can be easily integrated on third party developments.

Exact Noise Maps and g-Factor in GRAPPA using a k–space Analysis

This code allows to exactly characterize the noise noise in GRAPPA (GeneRalized Autocalibrating Partial Parallel Acquisition) acquisitions with non-uniform undersampling patterns by a noise propagation analysis that operates directly in k–space. We exploit the extensive symmetries and separability into independent blocks in the reconstruction steps to take into account the correlation between all the acquired k–space samples.

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