Technical Notes

Transonic Technical Notes

Acute / Chronic Animal Studies

Transit-Time Ultrasound Technology

Principles
Description of the principles behind transit time ultrasound technology for measuring volume flow. (TN #30)

Features (PDF)
Unique features of transit time ultrasound technology and how it differs from other technologies.

Research Flowmeters

Comparison of Features and Options (PDF) (TN #100)

Flowmeter Frequency Response (PDF)
An explanation of the frequency response and delay of Transonic Research Flowmeters. 2003 (TN #94)

Cardiac Output Flowprobes

PAX + A Series

Cardiac Output Flowprobes
Hints for successful continuous cardiac output measurement with specialized A (aortic)-Series flowprobes for larger animals. (TN #28)

A-Series Validation (PDF)
Validation of A-Series Flowprobe for Cardiac Output Measurements in vessels (Aorta, PA) with turbulent flows. (TN #16)

Mitral Valve Regurgitation in Sheep (PDF) (TN #106)

Perivascular Flowprobes

PS , PR , S , R , V-Series

1R-Series Probe
1R-Series Specifications

Choosing Mouse Flowprobes (Nanoprobes versus Small V-Series Probes) TN111

V-Series
Specifications of V-Series Probes for Acute Measurements with the T106/T206 Flowmeter (TN#23)

R&S-Series Flowprobes for Microvessels 5/99 TN24
Accuracy Keys
Keys to Accurate Flow Measurements with Transit Time Ultrasound Technology (TN #26)

Nanoprobe Care
How to care for nanoprobes to ensure maximum probe life. (I1009)

Probe Life
How to care for Flowprobes to ensure maximum probe life

Probe Manipulation (PDF)
An early technical note on how to manipulate probes into small landscapes. (TN #1)

Acoustical Couplants (PDF)
Listing and description of acoutical couplants for acute measurements. (TN #9)

Silicone Wrap
Using silicone wrap around a flowprobe to enhance implantation during chronic application. (TN #2)

Skin Button (PDF)
Using a skin button to exteriorize a flowprbe during a chronic application. (TN #3)

Custom Programming (PDF)
For Graft Materials & Other Conditions (TN #101)

Extension Cable Use (PDF)
Effects on Probe Received Signal (TN #99)

400-Series Compatibility (PDF)
T106/T206 Flowprobes (TN #102)

Calibration of Perivascular Flowprobes

Bench Calibration (PDF)
Protocol for the bench calibration of transit-time ultrasound perivascular flowprobes; updates 4/02 (TN #5)

Calibration Reexamined (PDF)
An in-depth re-examination of the calibration of transit-time ultrasound flowprobes. (TN #11)

Tubing Sensors

PXN-Series Inline, PXL-, XL-Series Sterile Tubing

Inline Sensor Care (PDF)
Key to proper care and use of ME-PXN sensors and step-by-step directions for expansion of Pebax® tubing ends on small inlines. (TN #31)
Pebax® is a registered trademark of ARKEMA

PXL, PXN and XL- Calibation (PDF)
Syringe calibration procedure for PXN inline and XL & PXL sterile tubing flowsensors. (TN #34)

Flowsensor/Tubing Acoustics (PDF)
A technical note with keys to accurate flow measurements with Transonic sterile tubing flowsensors (TN #27)

Computer and Data Acquisition

400-Series A/D Interface (PDF)
Data Acquisition for 400-Series Flowmeters (TN #95)

PowerLab Data Acquisition System

Automated Collection of Flow and Pressure Data In a Rat Hemorrhagic Shock Preparation (PDF)
A report from Van Way of his simultaneous collection of flow data and pressure with the Transonic flowmeter. (TN #12)

Pressure Measurements in Mice

Mouse Arterial Catheter Construction (TN #82)

Chronic Pressure Measurement: Cannulation of the Mouse Femoral Artery (TN #78)

Acute Pressure Measurement: Cannulation of the Mouse Carotid Artery (TN #79)

Concious Flow Measurements in the Rat

Tethers/Swivels (PDF)
Three protocols for using tethers and swivels to achieve conscious flow measurements in the rat. (TN #92)

Other Information

Arterial Circulatory Systems
Rabbit, Pig, Cat, Bird, Rat, Dog, Baboon, and Human (TN #105)

Equipment Resources (PDF)
A listing of equipment sources. (TN #91)