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Three-Dimensional Breath-Hold MRCP Using SPACE Pulse Sequence at 3 T: Comparison With Conventional
Zhiyong Chen1, Bin Sun1, Qing Duan1
1Department of Radiology, Union Hospital, Fujian Medical University, 29 Xin-Quan Rd, Fuzhou, 350001, People's Republic of China.
AJR. American Journal of Roentgenology
|August 7, 2019
Summary
Breath-hold (BH) MRCP is a feasible and faster alternative to navigator-triggered (NT) MRCP for imaging the pancreaticobiliary tree. This technique offers improved perceived image quality without compromising diagnostic accuracy.
Area of Science:
- Radiology
- Medical Imaging
- Gastroenterology
Background:
- Magnetic Resonance Cholangiopancreatography (MRCP) is crucial for non-invasively visualizing the biliary and pancreatic ducts.
- Conventional navigator-triggered (NT) MRCP is time-consuming and susceptible to motion artifacts.
- Breath-hold (BH) MRCP offers a potentially faster acquisition method.
Purpose of the Study:
- To compare the clinical feasibility of breath-hold (BH) MRCP with multichannel receiver coils against conventional navigator-triggered (NT) MRCP at 3 Tesla.
- To evaluate image quality, acquisition time, and diagnostic performance of both MRCP techniques.
Main Methods:
- Prospective study of 53 patients undergoing both BH MRCP and NT MRCP using SPACE sequence at 3T.
- Quantitative analysis of contrast ratio, SNR, and CNR of the common bile duct (CBD).
- Qualitative assessment of image quality, motion artifacts, and CBD visibility by blinded radiologists on a 4-point scale.
Main Results:
- BH MRCP acquisition time was significantly shorter (18 seconds) than NT MRCP (264.64 seconds; p < 0.001).
- NT MRCP showed significantly higher SNR, contrast ratio, and CNR compared to BH MRCP (p < 0.05).
- BH MRCP received significantly higher visual scores for overall image quality, fewer motion artifacts, and better CBD visibility (p < 0.001).
Conclusions:
- 3D BH MRCP with SPACE sequence at 3T is clinically feasible for imaging the pancreaticobiliary tree.
- BH MRCP provides significantly better perceived image quality and is much faster than NT MRCP.
- BH MRCP is a viable alternative to NT MRCP without loss of diagnostic image quality.
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