CT Topics Anthology (CE ARRT) 2019

Course Format: Online Video
Course Credit Type: CE ARRT
Course Credit: 1.00
Rewards Points Earned: 25
Course Category: *Imaging, CT, **Self-Study/On-Demand
Course Cost: $17.99 | Included in All-Access Pass
Mobile Friendly: Yes
Course Release Date: March 11, 2019
Course Expiration Date: March 11, 2021
Program Summary:



The purpose of this course is to enhance the knowledge and decision making skills of the Computed Tomography (CT) Radiologic Technologist in the performance of CT procedures.

The session begins with a discussion of those factors that impact the production of scatter radiation in CT. Included in the discussion are the primary CT imaging chain components that impact scatter production and their control. The discussion terminates with an appropriate increase/decrease discussion regarding impacting factors and the impact of scatter on patient dose.

Describing and defining Automatic Tube Current Modulation (ATCM) is the next topic building upon the field size aspect of the previous Scatter Production Factors discussion. Angular, Longitudinal, ECG Based, and Organ Based Tube Current Modulation are defined and described. The impact on patient dose and image quality related to the utilization of ATCM is discussed at length.

The final topic, Resolving Resolution, is used to further clarify the impact of the visibility of image details on CT images. Spatial Resolution, Contrast Resolution, and Temporal Resolution are defined and discussed at length. Factors that impact each type of resolution are discussed at length.

After participating in the session the attendee will be able to:
  • State the factors that impact the production of scatter radiation and how they can be controlled
  • Describe & define the various types of Automatic Tube Current Modulation (ATCM) including Angular, Longitudinal, ECG based & Organ business
  • Define & describe spatial, contrast and temporal resolution as they apply in CT imaging. Increase/decrease factors for each resolution type are described at length.

  • Defining & describing the scatter production factors
    • Field size
    • Part thickness (exponential attenuation)
    • KVp
  • Defining & describing the various types of Automatic Tube Current Modulation
    • Angular
    • Longitudinal
    • ECG based
    • Organ based
    • Defining & describing the various types of resolution
    • Spatial resolution
    • Contrast resolution
    • Temporal resolution

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