About this Program

Radiologic Pathology - Silhouette Sign and Diagnostic Yield

Recognition of the pathological processes present in your images is key to ensuring a successful imaging exam. This video will review the concept of utilizing the silhouette sign and define and provide examples of diagnostic yield. A major focus will be the inter-relationship of the various imaging modalities and how they clinically complement each other.


Silhouette Sign

  • Loss of normal borders
  • Concepts of silhouette sign
  • Radiographic densities

Diagnostic Yield

  • Definition
  • Characteristics of various imaging technologies

Educational Objectives

At the completion of this webinar, participants will be able to:

  • Recognize common radiologic pathologies using the concept of "silhouette sign".
  • Review the basics of radiographic densities regarding the silhouette sign.
  • Suggest methods to improve diagnostic image quality in order to maximize diagnostic yield.
  • Explain the characteristics of various imaging technologies that enhance the visualization of pathology.

How it Works:

  • Your On Demand CE activity that you purchased will be located in your “My Account” section once you log into the MTMI Website.
  • You have three attempts to pass each quiz.
  • You must earn a score of 75 % or higher.
  • Credit is recorded the day you submit and pass the quiz and is determined using Central time.
  • You have 30 days to complete and pass the quiz.
  • Once passed, access your MTMI “My Account” to print your “Certificate of Completion.”

Program Faculty

Meet your presenter(s)

Randy Griswold

Randy Griswold


Randy has been in the medical imaging profession for over 40 years as an educator, sales and marketing professional and consultant. Currently he is a contributing author and medical imaging consultant. Prior to that, he was the Director of Sales and Marketing for a Midwest distributor of digital medical imaging products. His collective experiences as an educator include being the Program Director for Bellin College, School of Radiologic Sciences and their BSRS program. He was instrumental in transforming their two-year certificate program to a four-year, accredited BSRS degree program.

Randy has 23 years of experience in radiology capital equipment sales, service and support including digital imaging, and has completed his graduate work in Public Service Administration with an emphasis in Health Care Administration and Medical Imaging Marketing. He is a past president of the Wisconsin Association of Educators in Radiologic Technology (WAERT) and the Wisconsin Society of Radiologic Technologists (WSRT) as well as being a Fellow. His passion for teaching is focused on helping technologists understand the importance of obtaining good quality images for diagnosis, in a fashion that uses the skills and techniques of radiologist interpretation.


Accredited training programs

ASRT Category A Credit Information

ASRT Category A

This program provides 1.75 hour(s) of Category A continuing education credit for radiologic technologists approved by ASRT and recognized by the ARRT and various licensure states.  Category A credit is also recognized for CE credit in Canada.  You must attend the entire program to receive your certificate of completion.