Real-time Pulse Transit Time and blood volume measurements
Advanced Plethysmography hardware/software combinations support wide variety of experiments
Record and analyze plethysmography data from a variety of body locations. Record pulse rate from the fingers, ears or toes for heart rate calculation or pulse transit time studies. Look at variations in appendage size or blood volume changes to regions of the body to examine venous capacitance, outflow, and compliance measures. For indirect approximation of blood pressure changes, record the pulse signal while occluding and releasing the brachial artery. Automated routines are available for cycle/peak detection and rate calculation to measure the area under the pulse waveform for an indication of blood volume.
Try plethysmography research tools in the free AcqKnowledge Demo
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Monitor vaginal plethysmography (TCIPPG1), penile plethysmography (TCI111/112), temperature, electrodermal activity (GSR), respiration, pulse, others
Record indirect blood pressure and continuous noninvasive blood pressure.
Measure variations in blood flow indirectly via changes in opacity with the plethysmogram transducer (TSD200).
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MP36R System
Wired | Plethysmography
MP36R with AcqKnowledge plus Photoplethysmogram transducer for Pulse measurement
MP160 System
Wired | Plethysmography
MP160 System with PPG amplifier and finger transducer
MP160 System
Wired | Plethysmography
MP160 System with PPG amplifier and finger transducer
MP36R System
MP160 System
MP160 System
MP160 System
Wireless | Plethysmography
MP160 with AcqKnowledge plus BioNomadix wireless PPG & Pulse transducer
BioNomadix Logger
Wireless | Plethysmography
BioNomadix Logger plus one pulse transmitter and wireless Pulse setup
MP160 System
BioNomadix Logger
MP160 System
MRI | Plethysmography
MP160 System with PPG amplifier and finger transducer for MRI
MP160 System
MP36R System
Animal | Plethysmography
MP36R with AcqKnowledge plus Photoplethysmogram transducer for Pulse measurement
MP160 System
Animal | Plethysmography
MP160 System with PPG amplifier and finger transducer
MP36R System
MP160 System
Derive BPM
A very reliable BPM subject data can be collected with the PPG100C-MRI photoplethysmogram amplifier and associated PPG transducer. It is generally much easier to perform a PPG measurement on a subject, as all that’s required to perform a PPG is an accessible finger or toe. Only one attachment point is required to perform a BPM measurement, using PPG, versus three attachment points (via electrodes), using ECG. Rate (BPM) can be derived from the PPG signal, using a standard or MRI Smart amplifier signal. The data is this graph illustrates an overlap comparison of the rate (BPM) data derived from a PPG100C-MRI amplifier as compared to BPM data derived from a ECG100C-MRI amplifier. Both the PPG data and ECG data were collected, on the same subject, at the same time. Note that the derived BPM results are very similar, excepting one point which is a result of switching artifact when the 10 Hz LP filter on the PPG100C-MRI amplifier was switched to 3 Hz LP.
Measure variations in blood flow indirectly via changes in opacity with the plethysmogram transducer for tethered, wireless and MRI applications. Typically, a blood volume pulse More...
To analyze regional blood flow, occlude the venous return with the blood pressure cuff (TSD120) and measure the swelling of the distal portion of the More...
Carotid to Femoral Pulse Wave Velocity (cfPWV) measurement
Classic (gold standard) Carotid to Femoral Pulse Wave Velocity (cfPWV) measurement. Pulse Transit Time (PTT) is calculated by referencing both carotid and femoral pressure rise to More...
Pulse Transit Time (PTT), Pulse Wave Velocity (PWV) and Pulse Wave Amplitude (PWA)
Pulse Transit Time (PTT) is the time it takes the Pulse Pressure (PP) waveform to propagate through a length of the arterial tree. The pulse More...
Indirect Blood Pressure Recordings
Record indirect blood pressure with a blood pressure cuff (TSD120) and a contact microphone (TSD108) placed over the brachial artery. Increase cuff pressure to occlude the More...
AcqKnowledge Find Cycle Peak Detector - Part 1
AcqKnowledge Find Cycle Peak Detector - Part 2
AcqKnowledge Find Cycle Peak Detector - Part 3
AcqKnowledge Find Cycle Peak Detector - Part 4
AcqKnowledge Find Cycle Peak Detector - Part 5
AcqKnowledge Find Cycle Peak Detector - Part 6
BIOPAC NIBP-MRI: How to Apply Sensor to Brachial Artery
Use to measure clench force in the MRI; clench force range 0-50 kgf. The lightweight, ergonomically designed transducer provides direct readings in kilograms or pounds. Use in isolation or combine with EMG recordings for in-depth studies of muscular activity. The isometric design improves experiment repeatability and accuracy. The TSD121B-MRI has an 8 meter cable terminated for connection […]
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BIOPAC’s comprehensive Introductory ECG Guide addresses fundamental to advanced concerns to optimize electrocardiography data recording and analysis. Topics include: ECG Complex; Electrical and Mechanical Sequence of a Heartbeat; Systole and Diastole; Configurations for Lead I, Lead II, Lead III, 6-lead ECG, 12-lead ECG, precordial leads; Ventricular Late Potentials (VLPs); ECG Measurement Tools; Automated Analysis Routines for extracting, […]
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