All Courses Bundle
Get every physics course + full access to 300+ board-style questions in the Quiz App.
$320 for access now through Nov. 15th
What You Get:
On-demand learning with short, focused modules
Quiz App included: 300+ exam-style questions
Complimentary access to the artifact library
Explore Our Course Catalog
Click here to access over 300
board review questions
Try our Quiz App and take your Imaging Physics knowledge to the next level!
- Practice with real exam-style questions
- Track your progress and proficiency
- Customize question topics
Already have the app login here
What action would minimize the appearance of the artifact shown in the image?
Select Your Answer:
Great Job!
You Got It Right!
What action would minimize the appearance of the artifact shown in the image?
Correct Answer:
a) Using a lower field magnet
Explanation: The artifact shown is a chemical shift artifact caused by a small difference in the Larmour precessional frequencies of fat and water. The difference is 3.5 ppm of the Larmour precessional frequency, which increases proportionally with field strength. This results in a greater shift in frequency between water and fat at higher magnetic field strengths. Using a lower field strength magnet will produce less chemical shift artifact compared to higher field strengths. Increasing the receiver bandwidth will also decrease the severity of the chemical shift artifact.
