<b>A Multi-Pathology Ballistocardiogram Dataset for Cardiac Function Monitoring and Arrhythmia Assessment</b>

This dataset comprises 153 subfolders within a primary directory named <i>data</i>, derived from 85 participants. Each participant typically contributes 2–3 subfolders, contingent on the completeness and quality of their M-mode echocardiography (UCG) recordings. Subfolder names follow the format: hdata + SubjectID + EJ/XJ/ZJ to denote the specific cardiac region captured in the ultrasound data:EJ denotes M-mode imaging of the mitral valve, XJ denotes M-mode imaging of the left ventricle, and ZJ denotes M-mode imaging of the aortic valve.For instance, a participant with identifier “001” may have subfolders named hdata1EJ, hdata1XJ, and/or hdata1ZJ, corresponding to each available M-mode echocardiographic segment. Each subfolder contains five distinct files, described in detail below.<b>1 BCG J-peak file</b>(1) File name: hdata+subjectID+EJ/XJ/ZJ_BCG.csv(2) Content: J-peak positions in the BCG signal, presented in two columns:(3) The first column provides the raw data point index.(4) The second column specifies the corresponding time (in seconds) for each J-peak.<b>2 ECG R-peak file</b>(1) File name: hdata+subjectID+EJ/XJ/ZJ_ECG.csv(2) Content: R-peak positions in the ECG signal, also in two columns:(3) The first column provides the raw data point index.(4) The second column specifies the corresponding time (in seconds) for each R-peak.<b>3 Ultrasound video</b>(1) File name: hdata+subjectID+EJ/XJ/ZJ_UCG.AVI(2) Content: An AVI-format video of the simultaneously acquired M-mode echocardiogram. The suffix EJ, XJ, or ZJ indicates whether the imaging targeted the mitral valve, left ventricle, or aortic valve, respectively.<b>4 Signal data</b>(1) File name: signal.csv(2) Content: Three columns of time-series data sampled at 100 Hz. Raw BCG signal (Column 1).ECG data (Lead V2 or another designated lead) (Column 2). Denoised BCG signal (Column 3), derived using the Enhanced Singular Value Thresholding (ESVT) algorithm.<b>5 Signal visualization</b>(1) File name: signal.pdf(2) Content: A graphical representation of the signals from signal.csv. This file facilitates quick inspection of waveform alignment and overall signal quality.In addition to the data directory, an Additional_info folder provides participant demographic and clinical details. Each row in subject_info.csv corresponds to an individual participant, listing their ID, sex, weight, height, age, heart rate, ejection fraction(EF) (%). These parameters establish an informative link between each participant’s anthropometric profile, cardiac function metrics, and the corresponding BCG, ECG, and ultrasound data.<br>