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Updated: May 26, 2026

Stabilized Window for Intravital Imaging of the Murine Pancreas
Published on: October 6, 2023
Visualization of pancreatic juice movement using unenhanced MR imaging with spin labeling: preliminary results in
Reiji Sugita1, Akemi Furuta, Jun Horaguchi
1Sendai City Medical Center, Department of Radiology, Sendai, Japan. rsugita@openhp.or.jp
Purpose:
To visualize the movement of pancreatic juice noninvasively by using an unenhanced magnetic resonance (MR) imaging technique.
Materials And Methods:
Institutional review board approval and informed consent were obtained for this study. A flow-out technique of time-spatial labeling inversion pulse (SLIP) technique was applied using both nonselective and selective inversion pulses to label, or tag, pancreatic juice to move out of the region. Ten normal (eight men, two women; age range, 22-61 years; mean age, 35 years) and two pathologic conditions were examined on a commercially available 1.5 Tesla MR imager with quadrature-detected phased-array coils. All images were evaluated by two radiologists to assess depiction of the pancreatic juice movement or pancreatic juice reflux as compared to the pancreatic duct or the common bile duct on MRCP obtained before time-SLIP examination.
Results:
The tagged pancreatic juice was satisfactory visualized after applying the pulse labeling. Noninvasive visualization of pancreatic juice movement, including normal pancreatic juice movement and reflux from the main pancreatic duct into the common bile duct, was possible by using the unenhanced time-SLIP technique.
Conclusion:
Noninvasive visualization of pancreatic juice movement is possible by using the unenhanced MR imaging time-SLIP technique.
Insights
Unenhanced magnetic resonance (MR) imaging using the time-spatial labeling inversion pulse (SLIP) technique allows noninvasive visualization of pancreatic juice movement. This method successfully depicted normal flow and reflux into the common bile duct.
Area of Science:
- Radiology
- Medical Imaging
- Gastroenterology
Background:
- Pancreatic juice movement is crucial for digestive health.
- Noninvasive visualization techniques are needed for accurate diagnosis.
- Current methods may be limited in assessing pancreatic juice dynamics.
Purpose of the Study:
- To evaluate the efficacy of an unenhanced magnetic resonance (MR) imaging technique for visualizing pancreatic juice movement.
- To assess the capability of the time-spatial labeling inversion pulse (SLIP) technique in depicting pancreatic juice dynamics noninvasively.
Main Methods:
- The time-spatial labeling inversion pulse (SLIP) technique was employed using both nonselective and selective inversion pulses.
- Pancreatic juice was labeled to track its movement within the pancreatic and common bile ducts.
- Ten healthy volunteers and two patients with pathologic conditions were scanned using a 1.5 Tesla MR imager.
Main Results:
- The time-SLIP technique successfully visualized tagged pancreatic juice.
- Noninvasive depiction of normal pancreatic juice movement was achieved.
- Reflux of pancreatic juice from the main pancreatic duct into the common bile duct was visualized.
Conclusions:
- The unenhanced MR imaging time-SLIP technique provides a viable method for noninvasive visualization of pancreatic juice movement.
- This technique holds promise for diagnosing conditions related to pancreatic juice flow abnormalities.
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