CT image quality, which is essential to providing an accurate diagnosis, is determined by comparing an image to its actual object. In order to obtain the best image quality in CT, a technologist must examine all scanning parameters. Adjustment of any of these parameters may affect image contrast, the image’s spatial resolution, or the apparent noise on the image, and at the same time possibly affect the dose of ionizing radiation administered to the patient. Artifacts due to positioning or technical errors can also severely degrade image quality in CT.
CT image quality, which is essential to providing an accurate diagnosis, is determined by comparing an image to its actual object. In order to obtain the best image quality in CT, a technologist must examine all scanning parameters. Adjustment of any of these parameters may affect image contrast, the image’s spatial resolution, or the apparent noise on the image, and at the same time possibly affect the dose of ionizing radiation administered to the patient. Artifacts due to positioning or technical errors can also severely degrade image quality in CT.
This activity is approved for credit by the American Society of Radiologic Technologists (ASRT) until 9/1/2023.
Approved by the ASRT for Category A continuing education credit
This activity may be available in multiple formats or from different sponsors. ASRT regulations state that an individual may not repeat a self-learning activity for credit if it was reported in the same or any subsequent biennium.
Mississippi State Department of Health Bureau of Professional Licensure Dietitians
Mississippi State Department of Health Bureau of Professional Licensure Medical Radiation Technologists (CEBroker Provider #50-290)
Outline:
Section 1: Introduction
About This Course
Learning Objectives
Section 2: Image Quality in CT
Image Quality
Technical Factors
Slice Thickness
Field of View and Image Matrix
Reconstruction
Pitch
Understanding Imaging Factors
Image noise
Artifacts
Section 3: Clinical Vignette
Head Trauma Case
Section 4: Conclusion
Summary
Course Contributor(s)
Resources
Congratulations!
Deborah Greer, MEd, RT(R)(M), is program director of the school of radiography at JFK Medical Center in Edison, N.J. Disclosure: Deborah Greer, MEd, RT(R)(M) has no Relevant Financial or Non-Financial Relationship with ineligible companies to disclose.Staff Writer: Olive Peart, MS,RT(R)(M)
Olive Peart, MS, RT(R)(M), is a SME Writer with Relias. She is an established author, radiographer and educator with years of experience as a radiologic technology program director. She has authored several radiology and mammography related textbooks. She also volunteers with RAD-AID international and served as a program manager with the Asha Jyoti: Women's Healthcare Mobile Outreach Programme, Chandigarh, India and currently serves as RAD-AID's Chief Mammography Technologist for the RAD-AID USA Women's Health Initiative.
Disclosure: Olive Peart, MS,RT(R)(M) has no Relevant Financial or Non-Financial Relationship with ineligible companies to disclose.
Access to over 1,450 courses! Access to 1,450+ courses for one low price.