2002 News


2002

Sleep-EDF Database

The Sleep-EDF Database is a collection of sleep recordings from healthy subjects contributed to PhysioBank by Bob Kemp. These recordings are presented in European Data Format (EDF), a standard for archiving and exchanging polysomnographic recordings. It's easy to read and write EDF files using the format converters available in PhysioToolkit.

Published: Dec. 12, 2002.


2002

Applying PhysioNet tools to manage neurophysiological signals

A gentle introduction to much of the software available on this site is offered by Applying PhysioNet tools to manage neurophysiological signals, a tutorial with data and hands-on exercises contributed by Jesus Olivan Palacios.

Published: Dec. 12, 2002.


2002

WFDB Software Package updated

An arterial blood pressure (ABP) pulse detector for continous ABP signals has been added to version 10.3.1 of the WFDB Software Package, which has just been posted. Read about other new features here.

Published: Dec. 5, 2002.


2002

WFDB Software Package updated

Version 10.3.0 of the WFDB Software Package has just been released, with many new features. Highlights include a port to MacOS/X; a new WFDB library interface permitting random access to digitized signals; a new QRS detector; a new application for signal averaging; up-to-date binaries for GNU/Linu x, MS-Windows (including, for the first time, a WFDB DLL), and Solari s; updated manuals; and more.

Published: Nov. 26, 2002.


2002

plt updated

Version 2.2 of plt adds support for MacOS/X and an updated manual.

Published: Nov. 17, 2002.


2002

ECG waveform generator for Matlab/Octave

A new and improved version of Floyd Harriott's ECG waveform generator has been posted.

Published: Nov. 13, 2002.


2002

mit2edf: convert PhysioBank records to EDF format

An application for exporting PhysioBank records in EDF (European Data Format) is now available; find it here [link updated 25 November 2002]. The complementary application for converting EDF recordings into PhysioBank format has been available as part of the WFDB Software Package for several years.

Published: Nov. 8, 2002.


2002

plt updated

Version 2.1 of plt, PhysioToolkit's scriptable plotting utility, is now available for GNU/Linux, MS-Windows, and in source form for other platforms.

Published: Nov. 7, 2002.


2002

XView toolkit updated

New XView packages have been posted for Red Hat GNU/Linux 7.x and 8.x. XView provides the GUI elements of WAVE and SEMIA; the new packages incorporate many bug fixes and provide a more stable GUI for WAVE and SEMIA under GNU/Linux.

Published: Oct. 31, 2002.


2002

Long-Term ST Database updated

Final versions of five complete (24-hour) records from the Long-Term ST Database are now available, together with SEMIA, a tool for viewing the detailed trend data, annotations, and ECG signals from these records. More records from this database will be available shortly.

Published: Oct. 30, 2002.


2002

WFDB Software Package manuals updated

New editions of the WFDB Software Package's manuals have been posted, with many revisions, additions, corrections, and cross-references. All are available in HTML for on-line reference as well as in PDF and PostScript versions for download and printing.

Published: Oct. 26, 2002.


2002

Algorithms from the PhysioNet/CinC Challenge 2002

The RR interval time series models that were entered into event 1 of the PhysioNet/Computers in Cardiology Challenge 2002 are now available for study. Each of the ten models is implemented as a self-contained C program that can generate a synthetic RR interval time series of at least 24 hours' duration.

Published: Sept. 26, 2002.


2002

Importing data from AHA Database CD-ROMs

Using the AHA Database with PhysioToolkit is easier than ever with the new ahaconvert script (batch file) for importing data from AHA CD-ROMs.

Published: Aug. 8, 2002.


2002

Resampling using the WFDB library

Most PhysioToolkit software uses the WFDB library to read and write PhysioBank-format files; the library is also available for use in your own programs. Beginning with version 10.2.6, applications that use the WFDB library can choose any convenient sampling frequency, and the library will transparently resample input signals at that frequency.

Published: June 24, 2002.


2002

The MGH/MF Waveform Database

The Massachusetts General Hospital/Marquette Foundation (MGH/MF) Waveform Database is a collection of 250 recordings of hemodynamic and electrocardiographic waveforms of patients in critical care units. Typical recordings include three ECG signals, ABP, PAP, CVP, respiratory impedance, and airway CO2 waveforms. The first 25 recordings of the MGH/MF Waveform database are now available here. Update: the entire database is now available.

Published: June 10, 2002.


2002

A brief overview of multifractal time series

A brief overview of multifractal time series has been posted in the Tutorials section of PhysioNet.

Published: May 29, 2002.


2002

Results from the PhysioNet/CinC Challenge 2002

The top scores for the PhysioNet/Computers in Cardiology Challenge 2002 have now been posted. Congratulations to the winners, and thanks to all who participated!

Published: May 9, 2002.


2002

Event 2 of the PhysioNet/CinC Challenge 2002

Event 2 of the PhysioNet/Computers in Cardiology Challenge 2002 has now begun. You are invited to match wits with participants in event 1, who have created a variety of realistic models of interbeat (RR) interval time series. Can you spot the simulations hidden among the real data in the challenge dataset?

Published: April 24, 2002.


2002

Assessing physical activity from a heart rate time series

An algorithm for assessing physical activity from a heart rate time series, and a paper describing its development and evaluation, are now available in PhysioToolkit.

Published: April 18, 2002.


2002

WFDB Software Package updated

The WFDB Software Package is one of the centerpieces of PhysioToolkit, and is revised frequently. Version 10.2.5 has just been posted, together with an updated set of tutorials and reference manuals. The 10.2 series, which has been tested extensively since mid-October, represents a significant advance over previous versions (see this list of changes and new features); please try it out!

Published: March 10, 2002.


2002

PhysioNet/CinC Challenge 2002

We are pleased to announce the latest in our annual series of PhysioNet/Computers in Cardiology Challenges. The topic for this challenge is RR interval time series modeling. Can you create a model that produces realistic short-term and long-term variations in interbeat intervals? Can you distinguish between synthetic and real RR interval time series? Take the challenge!

Published: Feb. 14, 2002.


2002

QRS detection and waveform boundary recognition using ecgpuwave

Software for locating waveform boundaries in the ECG (i.e., the beginnings, peaks, and ends of P, QRS, and T waves) has been contributed to PhysioNet. The software can be used to analyze either annotated or unannotated recordings (it includes an implementation of the Pan-Tompkins QRS detection algorithm).

Published: Feb. 7, 2002.


2002

Morphology Representation Using Principal Components

A new tutorial, Morphology Representation Using Principal Components, presents practical methods and sample code for deriving noise-tolerant measurements of waveform shape, using the QRS complex of the ECG as an example.

Published: Feb. 5, 2002.


2002

Automated detection of obstructive sleep apnea from the ECG

Software for automated detection of obstructive sleep apnea from the ECG has been contributed to PhysioToolkit. The apdet software package was written as an entry in the Computers in Cardiology Challenge 2000.

Published: Feb. 4, 2002.