Course Description
Computed tomography (CT) is a diagnostic imaging modality that employs X-rays to create cross-sectional slices through the body. In addition to many other modalities, CT has been through many significant clinical and technological advances since its development over 50 years ago. The goal of these advancements has been to improve the hardware component and optimize the technical parameters in order to improve image quality and lower radiation dose. In this course, various principles of CT imaging of the head will be explored, including the procedures and protocols, safety and dose reduction techniques, image acquisition strategies, and an extensive examination of image display as well as archiving and informatics. Basic concepts of image evaluation with an extensive look at artifact recognition and reduction as well as the use of contrast media to enhance anatomical structures will be reviewed. Protocols for specific head CT imaging studies will be outlined and several technological advances in head CT imaging will be explored.

Learning Objectives
After reviewing the content, the participant should be able to:

• SUMMARIZE the history and basic concepts of computed tomography (CT) imaging.
• OUTLINE the differences between CT and conventional radiography.
• EXPLAIN the image acquisition process, proper imaging procedures and protocols, and the processes used to acquire quality CT images of the head.
• RESTATE the image evaluation, archiving, and informatics processes associated with CT imaging of the head.
• RECALL the principles of image display and image quality as related to head CT imaging studies.
• EXPLAIN the principles of artifact recognition and reduction associated with CT imaging of the head.
• IDENTIFY various anatomical structures of the head and how they present on CT images.
• EXPLAIN how contrast media used in CT imaging studies enhances various structures of the head.

In order to receive CE credit, you must first complete the activity content. When completed, go to the "Take CE Test!" link to access the post-test.

Submit the completed answers to determine if you have passed the post-test assessment. You must answer 23 out of 30 questions correctly to receive the CE credit. You will have no more than 3 attempts to successfully complete the post-test.

Participants successfully completing the activity content and passing the post-test will receive 3.25 ARRT Category A credits.

Approved by the American Society of Radiologic Technologists for ARRT Category A credit.

Approved by the state of Florida for ARRT Category A credit (Technical).

Texas direct credit.

This activity may be available in multiple formats or from different sponsors. ARRT does not allow CE activities such as Internet courses, home study programs, or directed readings to be repeated for CE credit in the same biennium.

Category	Content Area	Credits
Computed Tomography	Image Production	1.75
Computed Tomography	Patient Care	0.25
Computed Tomography	Procedures	0.5
Computed Tomography	Safety	0.25
Nuclear Medicine	Image Production	0.75
Nuclear Medicine	Procedures	0.25
PTH	Procedures	0.25
Radiation Therapy	Patient Care	0.25
Radiation Therapy	Procedures	1
Radiologist Assistant	Patient Care	0.25
Radiologist Assistant	Procedures	0.25

Category	Subcategory	Credits
Computed Tomography	Head, Spine and Musculoskeletal	0.5
Computed Tomography	Image Evaluation and Archiving	1
Computed Tomography	Image Formation	0.75
Computed Tomography	Patient Interactions and Management	0.25
Computed Tomography	Radiation Safety and Dose	0.25
Nuclear Medicine	Instrumentation	0.75
Nuclear Medicine	Other Imaging Procedures	0.25
PTH	Treatment Sites	0.25
Radiation Therapy	Patient Interactions and Management	0.25
Radiation Therapy	Treatment Sites and Tumors	0.25
Radiation Therapy	Treatment Volume Localization	0.75
Radiologist Assistant	Neurological, Vascular and Lymphatic Sections	0.25
Radiologist Assistant	Pharmacology	0.25

Category	Credits
Digital	1.5