Normal signal-void patterns in cardiac cine MR images

Area of Science:

• Cardiovascular Imaging
• Medical Diagnostics
• Radiology

Background:

• Cardiac cine magnetic resonance (MR) imaging diagnoses valvular disease by identifying signal voids.
• Non-pathological signal voids can be mistaken for abnormalities, complicating diagnosis.
• Distinguishing normal from abnormal signal voids is crucial for accurate cardiac MR assessments.

Purpose of the Study:

• To determine the frequency, distribution, and timing of signal void appearance in healthy individuals.
• To establish a baseline understanding of normal signal void characteristics in cardiac cine MR.
• To aid in the accurate interpretation of cardiac cine MR examinations.

Main Methods:

• Prospective evaluation of twenty healthy volunteers.
• Utilized gradient-echo cine magnetic resonance (MR) imaging.
• Analyzed signal void regions for location, frequency, and temporal characteristics.

Main Results:

• Identified common sites for normal signal voids: atrioventricular valves, left ventricular outflow tract, atrial appendages, and venous inflow areas (coronary sinus, superior vena cava, pulmonary veins).
• Demonstrated that signal voids are present in healthy subjects and have predictable locations.
• Characterized the distribution and timing of these physiological signal voids.

Conclusions:

• Awareness of normal signal void patterns is essential for accurate cardiac cine MR interpretation.
• This research provides critical reference data for differentiating physiological signal voids from pathological ones.
• Improved diagnostic accuracy in valvular regurgitation and stenosis assessments using cardiac cine MR is anticipated.