SPI Domain 1: Perform Ultrasound Examinations (23%) - Complete Study Guide 2026
Domain 1, Perform Ultrasound Examinations, accounts for 23% of the SPI exam. On an exam with approximately 110 scored multiple-choice questions, that...
SPI Domain Deep Dives
Domain Deep Dives for the Sonography Principles and Instrumentation (SPI) (SPI) exam - 4 in-depth guides to help you prepare with confidence. Browse all study resources or jump straight into a guide below.
SPI Domain 2: Manage Ultrasound Transducers (7%) - Complete Study Guide 2026
Domain 2 - Manage Ultrasound Transducers - accounts for 7% of the SPI Certification exam, making it one of the smaller weighted sections on the content...
SPI Domain 3: Optimize Sonographic Images (26%) - Complete Study Guide 2026
Domain 3 of the SPI exam - Optimize Sonographic Images - tests whether a candidate can translate physics knowledge into hands-on scanner adjustments...
SPI Domain 4: Apply Doppler Concepts (34%) - Complete Study Guide 2026
Of the five domains tested on the Sonography Principles and Instrumentation exam, Domain 4 - Apply Doppler Concepts - carries more weight than any...
Ready to Pass Your SPI Exam?
Put these guides into practice with free SPI questions