ARDMS awards the RVT credential (Registered Vascular Technologist) to sonographers who pass the Sonography Principles and Instrumentation (SPI) exam and the Vascular Technology specialty exam.

The Sonography Principles and Instrumentation (SPI) exam is 2 hours long and consists of 110 multiple-choice and semi-interactive console questions. We strongly recommend Ultrasound Physics Review: SPI Edition (mock exam in book format) and if you need to strengthen your understanding of the basic principles and instrumentation of ultrasound, you should also have a standard ultrasound physics text—Kremkau's Sonography Principles and Instruments 10th edition.

The Vascular Technology specialty exam is 3 hours in length and contains approximately 170 multiple-choice questions. We recommend that candidates combine the Step 1 review text, Vascular Technology: An Illustrated Review, with the Step 2 mock exam Vascular Technology Review (CD-ROM or download and/or book format).

If you are studying for both the RVT and SPI exams and are looking for review texts and mock exams in vascular technology and ultrasound physics, we have our Vascular Technology and Ultrasound Physics SPI Bundle. You can save $29!

The Davies 1-2-3 Step products cover what you need to know from three angles—knowledge, memory, and application of knowledge—to ensure your best performance on the registry exams. In addition, our products are designed to work together. Each follows and covers in its own step-specific manner the ARDMS exam outlines, and each is cross-referenced to the other. So by design you have exactly what you need, including the means to assess your strengths and weaknesses and then to follow up with further study. There is no need to overwhelm yourself with dozens of books and articles that are not specifically designed to prepare you for these important examinations. Everything is here.