Publications by authors named "Takato Inomata"
Objective: Hyperdense artery sign (HAS) on noncontrast brain computed tomography (CT) indicates an acute thrombus within the cerebral artery. It is a valuable imaging biomarker for diagnosing large-vessel occlusion; however, its identification may be challenging with the presence of vascular calcification. Dual-energy CT virtual noncalcium (VNCa) imaging using a 3-material decomposition algorithm is helpful for differentiating between calcification and hemorrhage.
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- X-map is a new non-contrast dual-energy CT application designed to identify early ischemic changes (EIC) in acute ischemic stroke (AIS) patients, with a focus on its performance compared to traditional imaging methods like DWI and mixed-CT images.
- The study involved 50 AIS patients, and findings indicated that X-map showed strong correlation with DWI results, successfully identifying EIC in areas often missed by other imaging techniques, particularly in deep white matter.
- Overall, X-map demonstrated moderate accuracy and could be a valuable tool for detecting EIC in cases where conventional imaging falls short, especially in cortical regions.
[Evaluation of Low-dose Whole-body FDG PET with SiPM-based PET/CT Scanner: Visual and Semi-quantitative Analyses Using Random Sampling from Full-dose Scan Data].
Nihon Hoshasen Gijutsu Gakkai Zasshi
October 2023
Purpose: Sensitivity and count rate performance of the latest PET/CT scanners with a silicon photomultiplier (SiPM) have been substantially improved compared to scanners with a photomultiplier tube (PMT), thereby promising a low-dose whole-body PET scan with maintaining image quality. However, it is ethically difficult to verify the low-dose protocol in actual clinical settings. In this study, we investigated the effect of dose reduction on reconstructed images by using a low-dose simulation technique, i.
View Article and Find Full Text PDFPurpose: To evaluate suitable iterative metal artifact reduction (iMAR) presets for titanium neurosurgical clips and burr hole covers (BHCs) on postoperative non-contrast computed tomography (NCCT).
Method: Twenty-two patients who underwent NCCT after intracranial aneurysmal clipping were included. NCCT images were postprocessed using eight currently available iMAR presets.
Purposes: Subject's motion during brain PET scan degrades spatial resolution and quantification of PET images. To suppress these effects, rigid-body motion correction systems have been installed in commercial PET scanners. In this study, we systematically compare the accuracy of motion correction among 3 commercial PET scanners using a reproducible experimental acquisition protocol.
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