
Explore ct basics and concepts for technologists, covering scanner layout, scan parameters, image display, patient care, power injectors, and dose. Preview five topics, including contrast media administration.
Some fun CT facts, a detailed description of the layout of a CT scanner and its components.
Explain CT scan parameters, comparing axial and helical scanning, and how noise and dose relate to image quality; summarize common views—axial, coronal, sagittal, mip, vr—and post-processing.
Explore CT parameters like kV, pitch, and mA that drive dose and quality, and how scan field of view, slice thickness, reconstruction interval, and raw versus image data influence display.
Perform a thorough CT patient assessment by obtaining clinical history and communicating exam details, breathing instructions, and contrast risks to ensure comfort, immobilization, and optimal image quality.
Learn CT dose basics, including CT dose index (CTD) and dose length product (DLP), dose reports, and how patient positioning, ISO centering, and detector efficiency minimize exposure.
This course is designed to provide students with a comprehensive understanding of Computed Tomography (CT) basics and concepts. CT is a diagnostic imaging technique that uses X-rays to create detailed cross-sectional images of the body. In this course, you will learn the fundamentals of CT, including the physics behind the technology, the image acquisition process, and the various clinical applications of CT imaging. There are no perquisites required for this course, just your willingness to learn!
Course Goals:
To understand who invented CT and the CT generation that most CT scanners are designed by.
To learn about CT image acquisition techniques, display and parameters associated with image formation.
To identify different components of a CT scanner and their respective locations.
To understand the purpose of a power injector and its purpose for CT imaging.
To learn the importance of educating the CT patient on all aspects of the exam and communication is key.
To understand the importance of radiation safety in CT imaging.
Course Outline:
I. Introduction to Computed Tomography
Inventor of CT
The generation of technology CT scanners are designed by
Typical layout of a CT Scanner and its components
II. Scanning Parameters
Types of scanning methods used
A detailed description of how each method is used for different imaging exams
Common scan term used
The CT Image-various types of imaging views that are referenced to anatomical position
III. Image Parameters and Display
Technical factors used to acquire an optimal image
SFOV and DFOV-how each is used and the effect it has on a CT image
Slice thickness and interval, plus the importance of both
Raw data vs. Image data
IV. The CT Patient
Patient assessment
Obtaining clinical history
Review of medications, allergies, prior CT exams
Patient education
V. Power Injectors
Single vs. Dual head
General injection protocols
Pediatric patients
VI. CT Dose
Dose reduction techniques
Methods to reduce unnecessary exposure
Measurement of dose, dose alerts and notifications
Course Action Steps:
Study the video lessons and review the course materials thoroughly.
Participate and submit all questions to the instructor.
Take notes to reinforce learning.
Apply what you've learned in the course in the clinical setting to gain hands-on experience.
Review and analyze CT images to practice interpretation skills.
Apply radiation safety principles to ensure safe CT imaging practices.