Respiration artifacts in MR imaging: reduction by breath holding

Area of Science:

• Medical Imaging
• Radiology
• Physics

Background:

• Respiratory motion is a significant source of artifacts in upper abdominal Magnetic Resonance Imaging (MRI).
• These artifacts degrade image quality by blurring structures and obscuring details, particularly along the phase encoding direction.
• Existing methods for artifact reduction are often insufficient.

Purpose of the Study:

• To investigate a method for reducing respiratory motion artifacts in upper abdominal MRI.
• To assess the effectiveness of breath-holding during specific phases of image acquisition.

Main Methods:

• Utilized Magnetic Resonance Imaging (MRI) sequences with relatively short acquisition times.
• Implemented a breath-holding technique during the middle 20% of the image acquisition sequence.
• Acquired scans of the upper abdomen.

Main Results:

• The implemented breath-holding technique demonstrated a reduction in respiratory motion artifacts.
• Artifacts were reduced, though not completely eliminated, in the acquired image sequences.
• Image quality was improved compared to scans acquired without this specific breath-holding strategy.

Conclusions:

• Breath-holding during the middle 20% of short acquisition time sequences is an effective strategy for reducing respiratory motion artifacts in upper abdominal MRI.
• This technique offers a practical approach to improve diagnostic image quality in routine clinical practice.
• Further optimization may be explored to achieve complete artifact elimination.