Tag Archives: Math

Lecture Notes on Biostatistics

Histogram of sepal widths for Iris versicolor ...

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Introduction, descriptive statistics, diagnostic tests and method comparison, theoretical distributions and probability, point estimation and confidence interval, hypothesis tests, parameter and parameter free tests, comparing groups, correlation and regression, relation between several variables (ANOVA, multiple regression, logistic regression, factor analysis), analysis of survival times (Kaplan-Meier curves, cox regression, hazard ratio), experimental design, clinical trials, biological and medical literature, microarray analyses
Douglas G. Altman: Practical Statistics for Medical Research, Chapman&Hall/CRC
Martin Bland: An Introduction to Medical Statistics, Oxford Medical Publications
Harvey Motulsky: Intuitive Biostatistics, Oxford University Press
Lothar Sachs, Jürgen Hedderich: Angewandte Statistik (Methodensammlung mit R), Springer
John Verzani: Using R for Introductory Statistics, Chapman&Hall/CRC

Static Characteristics of Biomedical Instruments

Representation of high accuracy and low precision.

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To enable purchasers to compare commercially available instruments and evaluate new instrument designs, quantitative criteria for the performance of instruments are needed. These criteria must clearly specify how well an instrument measures the desired input and how much the output depends on interfering and modifying inputs. Characteristics of instrument performance are usually subdivided into two classes on the basis of the frequency of the input signals.
Static characteristics describe the performance of instruments for dc or very low frequency inputs. The properties of the output for a wide range of constant inputs demonstrate the quality of the measurement, including nonlinear and statistical effects. Some sensors and instruments, such as piezoelectric devices, respond only to time-varying inputs and have no static characteristics.

Lecture Notes on Image processing for beginners

These are lecture notes which I used to study my course related to image processing. I found these medical image processing lecture notes very useful while studying for the subjects even at the last minute. They helped me in overcoming the fear related to image processing . These notes are meant for all those people who are just beginners and know nothing related to medical image processing. They are well framed and collected

Do download the notes from links given below

Wavelet & Biomedical Imaging Tutorials

Recent Advances in Biomedical Imaging and Signal Analysis

M. Unser slide Proceedings of the Eighteenth European Signal Processing Conference (EUSIPCO’10), Ålborg, Denmark, August 23-27, 2010, EURASIP Fellow inaugural lecture.

Wavelets have the remarkable property of providing sparse representations of a wide variety of “natural” images. They have been applied successfully to biomedical image analysis and processing since the early 1990s.

In the first part of this talk, we explain how one can exploit the sparsifying property of wavelets to design more effective algorithms for image denoising and reconstruction, both in terms of quality and computational performance. This is achieved within a variational framework by imposing some ?1-type regularization in the wavelet domain, which favors sparse solutions. We discuss some corresponding iterative skrinkage-thresholding algorithms (ISTA) for sparse signal recovery and introduce a multi-level variant for greater computational efficiency. We illustrate the method with two concrete imaging examples: the deconvolution of 3-D fluorescence micrographs, and the reconstruction of magnetic resonance images from arbitrary (non-uniform) k-space trajectories.

In the second part, we show how to design new wavelet bases that are better matched to the directional characteristics of images. We introduce a general operator-based framework for the construction of steerable wavelets in any number of dimensions. This approach gives access to a broad class of steerable wavelets that are self-reversible and linearly parameterized by a matrix of shaping coefficients; it extends upon Simoncelli’s steerable pyramid by providing much greater wavelet diversity. The basic version of the transform (higher-order Riesz wavelets) extracts the partial derivatives of order N of the signal (e.g., gradient or Hessian). We also introduce a signal-adapted design, which yields a PCA-like tight wavelet frame. We illustrate the capabilities of these new steerable wavelets for image analysis and processing (denoising).

Slide of the presentation (PDF 17.3 Mb)



Human systems physiology, including:  basic cellular physiology, neuromuscular, cardiovascular, respiratory, renal and gastro-intestinal physiology.  A quantitative, model-oriented approach to physiological systems is stressed.


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1 Lecture 1 Lecture 1 Lecture 1
2 Lecture 2 Lecture 2 Lecture 2
3 Lecture 3 Lecture 3 Lecture 3
4 Lecture 4 Lecture 4 Lecture 4
5 Lecture 5 Lecture 5 Lecture 5