Toyoyuki Kato
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Explore the profile of Toyoyuki Kato including associated specialties, affiliations and a list of published articles.
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50
Citations
71
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Recent Articles
1.
Mikayama R, Togao O, Obara M, Wada T, Tokunaga C, Yoshidome S, et al.
Eur J Radiol
. 2025 Mar;
186:112034.
PMID: 40054339
Purpose: To present a multi-delay arterial spin labeling (ASL) protocol that obtains the cerebral blood flow (CBF) considering the arterial transit time (ATT), and to assess the correlations with an...
2.
Kojima T, Yamasaki Y, Nishigake D, Shirasaka T, Kondo M, Hioki K, et al.
Br J Radiol
. 2025 Feb;
PMID: 39918967
Objectives: To develop and validate the myocardial extracellular volume (ECV) obtained from non-electrocardiography (ECG)-gated delayed CT images acquired 4 minutes post-contrast infusion (4-min-nonECG-ECV) compared with the ECV obtained from ECG-gated...
3.
Hamasaki H, Arimura H, Yamasaki Y, Yamamoto T, Fukata M, Matoba T, et al.
Phys Eng Sci Med
. 2024 Dec;
PMID: 39739189
This study proposed noninvasive machine-learning models for the detection of lesion-specific ischemia (LSI) in patients with stable angina with intermediate stenosis severity based on coronary computed tomography (CT) angiography. This...
4.
Sakai Y, Okamura K, Kitamoto E, Shirasaka T, Kato T, Chikui T, et al.
Dentomaxillofac Radiol
. 2024 Nov;
54(3):203-209.
PMID: 39602600
Objectives: The purpose of this study was to compare the image quality of ultra-high-resolution CT (U-HRCT) with that of conventional multidetector row CT (convCT) and demonstrate its usefulness in the...
5.
Wada T, Kikuchi K, Obara M, Tokunaga C, Yamashita K, Kobayashi K, et al.
Magn Reson Imaging
. 2024 Jul;
112:144-150.
PMID: 39029602
Purpose: A volume isotropic simultaneous interleaved bright- and black-blood examination (VISIBLE) can simultaneously acquire images with suppressed vascular signals (black-blood images) and images without suppression (bright-blood images). We aimed to...
6.
Nishigake D, Yamasaki Y, Hida T, Shirasaka T, Funatsu R, Kato T, et al.
Quant Imaging Med Surg
. 2024 Jul;
14(7):4714-4722.
PMID: 39022251
Background: In cardiac computed tomography (CT), the best image quality is obtained at mid-diastole at low heart rates (HRs) and at end-systole at high HRs. On the other hand, extracellular...
7.
Hirose T, Takaki M, Shibayama Y, Fukunaga J, Kato T, Yoshitake T, et al.
J Radiat Res
. 2024 Jun;
65(4):507-511.
PMID: 38934659
The aim of this study was to investigate planning target volume (PTV) margin in online adaptive radiation therapy (oART) for gastric mucosa-associated lymphoid tissue (MALT) lymphomas. Four consecutive patients with...
8.
Tokunaga C, Wada T, Togao O, Kobayashi K, Kato T
Magn Reson Imaging
. 2024 Apr;
110:69-77.
PMID: 38614223
Purpose: Conventional amide proton transfer (APT)-weighted imaging requires a chemical exchange saturation transfer (CEST) sequence with multiple saturation frequency offsets and a B0 correction sequence, plus a long acquisition time...
9.
Murazaki H, Wada T, Togao O, Obara M, Helle M, Kobayashi K, et al.
Magn Reson Imaging
. 2024 Feb;
109:1-9.
PMID: 38417470
Purpose: Two major drawbacks of 4D-MR angiography based on superselective pseudo-continuous arterial spin labeling combined with CENTRA-keyhole and view-sharing (4D-S-PACK) are the low temporal resolution and long scanning time. We...
10.
Takakura K, Yamasaki Y, Kuramoto T, Yoshidome S, Hida T, Kamitani T, et al.
J Appl Clin Med Phys
. 2023 Nov;
25(1):e14222.
PMID: 38011586
Purpose: Dynamic chest radiography (DCR) is a novel imaging technique used to noninvasively evaluate pulmonary perfusion. However, the standard DCR protocol, which is roughly adapted to the patient's body size,...