Which term correctly describes the parameter calculated in PISA analysis for MR assessment?

Unlock all questions

This demo includes only 20 questions. Upgrade to access hundreds of questions, flashcards, exam simulations, and disable ads.

Full question bankExam simulationsFlashcards
From $24.99Unlock all

Prepare for the Ultrasound Registry Review (URR) MV Abnormalities and Disease Test. Enhance your studies with quizzes, flashcards, and detailed explanations. Pass your exam with confidence!

Multiple Choice

Which term correctly describes the parameter calculated in PISA analysis for MR assessment?

Explanation:
PISA analysis for MR relies on the Proximal Isovelocity Surface Area, the surface area of the hemispherical flow-convergence region formed around the regurgitant orifice at the aliasing velocity. This area is what you use to estimate the flow rate (Q = 2π r^2 Va). From that flow and the MR jet velocity, you derive the effective regurgitant orifice area and regurgitant volume. The term describes the actual calculated quantity—the area of the proximal isovelocity shell—so it’s the correct descriptor. Names referring to angles, distal surfaces, or mere analysis don’t describe the parameter used in this method.

PISA analysis for MR relies on the Proximal Isovelocity Surface Area, the surface area of the hemispherical flow-convergence region formed around the regurgitant orifice at the aliasing velocity. This area is what you use to estimate the flow rate (Q = 2π r^2 Va). From that flow and the MR jet velocity, you derive the effective regurgitant orifice area and regurgitant volume. The term describes the actual calculated quantity—the area of the proximal isovelocity shell—so it’s the correct descriptor. Names referring to angles, distal surfaces, or mere analysis don’t describe the parameter used in this method.

More Multiple Choice Questions
Subscribe

Get the latest from Examzify

You can unsubscribe at any time. Read our privacy policy