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Updated: Jul 4, 2026

Blast Quantification Using Hopkinson Pressure Bars

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Published on: July 5, 2016

Calculation of pressure half-time.

Mark A Oyama¹, Jess A Weidman, Steven G Cole

¹Department of Clinical Studies, School of Veterinary Medicine, University of Pennsylvania, 3900 Delancey Street, PA 19104, USA. maoyama@vet.upenn.edu

Journal of Veterinary Cardiology : the Official Journal of the European Society of Veterinary Cardiology

|June 3, 2008

Summary

Doppler echocardiography effectively measures mitral valve stenosis severity using pressure half-time (PHT). This method accurately assesses obstruction before and after balloon valvuloplasty in dogs.

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Area of Science:

Cardiology
Veterinary Medicine
Diagnostic Imaging

Background:

Obstructive cardiac lesions, like mitral valve stenosis, require accurate assessment of severity.
Doppler echocardiography is a key non-invasive imaging technique in cardiovascular diagnostics.
Pressure half-time (PHT) is a crucial Doppler-derived parameter for evaluating stenosis severity.

Observation:

This study details the methodology for measuring PHT in a canine model.
Measurements were taken in a dog diagnosed with mitral valve stenosis.
PHT was assessed both before and after therapeutic intervention (balloon valvuloplasty).

Findings:

The study demonstrates the practical application of Doppler echocardiography for PHT measurement.
The methodology allows for quantitative assessment of mitral valve stenosis.
Changes in PHT correlate with the success of balloon valvuloplasty in reducing obstruction.

Implications:

Accurate PHT measurement aids in clinical decision-making for valvular heart disease.
This technique can improve the management and prognosis of obstructive cardiac lesions.
The findings support the utility of Doppler echocardiography in veterinary cardiology practice.