Publications by authors named "W Koda"
This study assessed the clinical performance of point-of-care testing (POCT) for quick cortisol assay (QCA) during adrenal vein sampling (AVS) using a newly invented portable quantitative assay instrument. An observational study was conducted prospectively at two centres in Japan. Forty-eight patients with primary aldosteronism considered for adrenalectomy were enrolled in this study and underwent AVS.
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- The study aimed to assess the practicality of using renal artery-based segmentation for kidneys with renal cell carcinoma (RCC) by utilizing 3D software to simulate segmental artery clamping (SAC) and its correlation with the RENAL nephrometry score.
- Fifty cases of RCC tumors smaller than 4 cm were analyzed using CT images, where a semi-automated process annotated relevant structures and assessed the feasibility of SAC through 3D Voronoi diagrams.
- Results showed that a significant number of cases (44%) were deemed possible for SAC, with high agreement in simulation outcomes and notable differences in RENAL nephrometry scores between groups suitable and unsuitable for SAC.
Background Imaging markers of hepatocellular carcinoma (HCC) on the basis of molecular classification are important for predicting malignancy grade and prognosis. P53-mutated HCC is a major aggressive subtype; however, its imaging characteristics have not been clarified. Purpose To clarify the imaging characteristics of P53-mutated HCC at dynamic CT and gadoxetic acid-enhanced MRI that are correlated with its clinical features, pathologic findings, and prognosis.
View Article and Find Full Text PDFEvaluation of feasibility and safety of percutaneous radiofrequency ablation using bipolar radiofrequency devices in a prospective multicenter cohort of patients with benign aldosterone-producing adenoma. A total of five institutions participated. CT-guided percutaneous RFA was performed for patients diagnosed as APA.
View Article and Find Full Text PDFObjectives: In the arterial phase of gadoxetate disodium administration for dynamic MRI, transient severe motion (TSM) sometimes occurs, making image evaluation difficult. This study was to identify risk factors for TSM in a clinical study, and confirm them and investigate the cause in an animal study.
Methods: A retrospective, single-center, observational study included patients who underwent dynamic MRI using gadoxetate disodium for the first time from April 2016 to September 2019 and free-breathing MRI was performed.