User profiles for K. Kamagata

Koji Kamagata

Melbourne Neuropsychiatry Centre, Faculty of Medicine, Dentistry and Health Science & …
Verified email at juntendo.ac.jp
Cited by 4866

[HTML][HTML] Fairness of artificial intelligence in healthcare: review and recommendations

D Ueda, T Kakinuma, S Fujita, K Kamagata… - Japanese Journal of …, 2024 - Springer
In this review, we address the issue of fairness in the clinical integration of artificial intelligence
(AI) in the medical field. As the clinical adoption of deep learning algorithms, a subfield of …

Visualizing non-Gaussian diffusion: clinical application of q-space imaging and diffusional kurtosis imaging of the brain and spine

…, Y Masutani, T Taoka, K Kamagata… - … Resonance in Medical …, 2012 - jstage.jst.go.jp
… (K¿), and radial kurtosis (K⊥) are determined as follows. MK is deˆned as the average of the
kurtosis over all possible diŠusion directions; K… diŠusion eigenvalue; and K⊥ is deˆned as …

Advantages of using both voxel-and surface-based morphometry in cortical morphology analysis: a review of various applications

…, O Abe, A Hagiwara, S Fujita, K Kamagata… - Magnetic resonance in …, 2022 - jstage.jst.go.jp
In addition, we introduce two other recent methods as future directions for estimating cortical
morphological changes: a multi-modal parcellation method using structural and functional …

[HTML][HTML] Tractography dissection variability: What happens when 42 groups dissect 14 white matter bundles on the same dataset?

…, VA Nair, V Prabhakaran, AL Alexander, K Kamagata… - Neuroimage, 2021 - Elsevier
White matter bundle segmentation using diffusion MRI fiber tractography has become the
method of choice to identify white matter fiber pathways in vivo in human brains. However, like …

[HTML][HTML] Reproducibility of diffusion tensor image analysis along the perivascular space (DTI-ALPS) for evaluating interstitial fluid diffusivity and glymphatic function …

T Taoka, R Ito, R Nakamichi, K Kamagata… - Japanese journal of …, 2022 - Springer
Purpose The diffusion tensor image analysis along the perivascular space (DTI-ALPS) method
was developed to evaluate the brain’s glymphatic function or interstitial fluid dynamics. …

Neurite orientation dispersion and density imaging in the substantia nigra in idiopathic Parkinson disease

K Kamagata, T Hatano, A Okuzumi, Y Motoi, O Abe… - European …, 2016 - Springer
Objectives We used neurite orientation dispersion and density imaging (NODDI) to quantify
changes in the substantia nigra pars compacta (SNpc) and striatum in Parkinson disease (PD…

A preliminary diffusional kurtosis imaging study of Parkinson disease: comparison with conventional diffusion tensor imaging

K Kamagata, H Tomiyama, T Hatano, Y Motoi, O Abe… - Neuroradiology, 2014 - Springer
Introduction Diffusional kurtosis imaging (DKI) is a more sensitive technique than
conventional diffusion tensor imaging (DTI) for assessing tissue microstructure. In particular, it …

Synthetic MRI in the detection of multiple sclerosis plaques

…, C Andica, T Tabata, K Kamagata… - American journal …, 2017 - Am Soc Neuroradiology
BACKGROUND AND PURPOSE: Synthetic MR imaging enables the creation of various
contrast-weighted images including double inversion recovery and phase-sensitive inversion …

[HTML][HTML] Myelin Measurement: Comparison Between Simultaneous Tissue Relaxometry, Magnetization Transfer Saturation Index, and T1w/T2w Ratio Methods

A Hagiwara, M Hori, K Kamagata, M Warntjes… - Scientific reports, 2018 - nature.com
Magnetization transfer (MT) imaging has been widely used for estimating myelin content in
the brain. Recently, two other approaches, namely simultaneous tissue relaxometry of R 1 …

[HTML][HTML] Relationship between cognitive impairment and white-matter alteration in Parkinson's disease with dementia: tract-based spatial statistics and tract-specific …

K Kamagata, Y Motoi, H Tomiyama, O Abe, K Ito… - European …, 2013 - Springer
Objectives We investigated the relationship between white-matter alteration and cognitive
status in Parkinson’s disease (PD) with and without dementia by using diffusion tensor imaging…