Hepatic arterial phase MR imaging with automated bolus-detection three-dimensional fast gradient-recalled-echo...

Area of Science:

• Radiology
• Medical Imaging

Background:

• Liver magnetic resonance (MR) imaging requires precise timing of contrast material injection for optimal arterial phase visualization.
• Traditional timing methods can be variable, potentially leading to suboptimal image quality.

Purpose of the Study:

• To evaluate the efficacy of an automated contrast material bolus-detection technique for optimizing liver MR imaging.
• To compare the accuracy of automated bolus detection with a test bolus method for timing contrast enhancement.

Main Methods:

• Sixty-two patients undergoing liver MR imaging utilized an automated contrast material bolus-detection technique.
• Arterial phase images were quantitatively and qualitatively assessed.
• A subset of 23 patients also received a test bolus for comparative timing analysis.

Main Results:

• There was good correlation and agreement between delay times estimated using automated detection and the test bolus method.
• Eighty-three percent of arterial phase MR images acquired with automated bolus detection were deemed optimal.
• The automated technique demonstrated reliability in achieving optimal hepatic arterial phase imaging.

Conclusions:

• Automated contrast material bolus detection is an effective and routine method for optimizing liver MR imaging.
• This technique ensures consistent acquisition of high-quality arterial phase images, crucial for liver lesion detection and characterization.