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| MR imaging of the pancreas: comparison between two-dimensional and three-dimensional gradient-echo sequence |
| WANG Jing1, GAO Lei2, LU Jian-ping3, WU Le-bin1 |
| 1. Shandong Medical Imaging Institute, Jinan 250021, China; 2. Shandong Tumor Hospital; Jinan 250117; China;3. Department of Radiology, Changhai Hospital, Shanghai 200433, China |
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Abstract Objective: Comparison of two-dimensional with three-dimensional sequence MRI, to determine the optimum dynamic enhancement sequence for the pancreas. Materials and Methods: Forty patients without any pancreatic disease were randomly assigned to 2D, 3D groups according to scanning sequences(2D and 3D FLASH). After plain scan, the two groups were made multi-phase dynamic enhancement scanning of the pancreas. Mean signal intensities of pancreas of plain scanning and multi-phase dynamic enhancement scanning were measured, the signal to noise(SNR) and contrast to noise (CNR) were calculated, and image quality were assessed. Results: Plain scanning: the SNR of the pancreas in 3D group was 19.2 which was evidently lower than that of the 2D group(22.7, P<0.05); dynamic enhanced scanning: the SNR or CNR of the pancreas in 3D group were high than that of the 2D group, especially high in the first scanning(P<0.05), the best images of pancreas were obtained in this phase. Conclusion: 3D FLASH is the best dynamic enhanced sequence for pancreas. It offers the better confidence for a more specific and accurate diagnosis and provides more details of the segmental and vascular anatomy to facilitate surgical operation planning.
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Received: 21 March 2006
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2006, Vol. 17 
