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A Novel High-resolution In vivo Imaging Technique to Study the Dynamic Response of Intracranial Structures to Tumor Growth and Therapeutics
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Effective Visualization of the Intracranially Implanted Neurosurgical Devices with Photon-counting Detector Computed
Tadasuke Tominaga1,2,3, Takahiro Yokoyama1,2, Suguru Nakamura1
1Department of Neurosurgery, Itabashi Chuo Medical Center.
The Journal of Medical Investigation : JMI
|November 3, 2025
Summary
Photon-counting detector CT (PCD-CT) offers high-resolution neurosurgical imaging at lower radiation doses. Initial use of postoperative PCD-CT effectively visualized intracranial neurosurgical devices like shunt valves and stents.
Area of Science:
- Medical Imaging
- Neurosurgery
- Radiology
Background:
- Photon-counting detector computed tomography (PCD-CT) provides high spatial resolution and reduced radiation dose.
- The clinical utility of PCD-CT in neurosurgery requires further definition.
Purpose of the Study:
- To evaluate the initial experience and effectiveness of postoperative PCD-CT in neurosurgery.
- To assess the visualization capabilities of PCD-CT for intracranial neurosurgical devices.
Main Methods:
- Postoperative PCD-CT was performed in a high-resolution mode (helical pitch, 0.85; gantry rotation time, 0.5 s; tube voltage, 120 kV).
- Iterative metal artifact reduction was applied.
- Reconstructed images with a slice thickness of 0.2 mm were analyzed.
Main Results:
- PCD-CT effectively visualized intracranial neurosurgical devices.
- Specific devices assessed included shunt valve pressure adjustment systems and endovascular flow-diverting stents.
- High-resolution imaging was achieved with reduced radiation exposure.
Conclusions:
- Postoperative PCD-CT is a promising modality for neurosurgical applications.
- PCD-CT enables detailed assessment of implanted neurosurgical devices.
- Further studies are warranted to establish the full role of PCD-CT in neurosurgery.
Keywords:
Image qualityImage resolutionNeurosurgical device visualizationPhoton-counting detector computed tomographyRadiation exposureMore Related Videos
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