M
Masafumi Ohki
Researcher at Kyushu University
Publications - 61
Citations - 627
Masafumi Ohki is an academic researcher from Kyushu University. The author has contributed to research in topics: Computed radiography & Imaging phantom. The author has an hindex of 12, co-authored 61 publications receiving 571 citations. Previous affiliations of Masafumi Ohki include RMIT University & National Institute of Radiological Sciences.
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Journal ArticleDOI
Comparison of sonography and CT for differentiating benign from malignant cervical lymph nodes in patients with squamous cell carcinoma of the head and neck.
TL;DR: Sonography could be a useful adjunct to CT in surveying cervical metastatic nodes and provide higher sensitivity and specificity than CT did, whereas the cutoff points for the short-axis diameter in both tests were equivalent.
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Computer-aided detection of multiple sclerosis lesions in brain magnetic resonance images: False positive reduction scheme consisted of rule-based, level set method, and support vector machine
Daisuke Yamamoto,Hidetaka Arimura,Shingo Kakeda,Taiki Magome,Yasuo Yamashita,Fukai Toyofuku,Masafumi Ohki,Yoshiharu Higashida,Yukunori Korogi +8 more
TL;DR: Results indicate the proposed method, which consisted of a rule-based method, a level set method, and a support vector machine, would be useful for assisting neuroradiologists in assessing the MS in clinical practice.
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MR factor analysis: Improved technology for the assessment of 2D dynamic structures of benign and malignant salivary gland tumors
TL;DR: To establish an MR factor analysis technique for two‐dimensional (2D) MR dynamic structures of benign and malignant salivary gland tumors, an MR dynamic structure analysis technique is established.
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Parotid tumors: differentiation of benign and malignant tumors with quantitative sonographic analyses
TL;DR: Findings suggest that quantitative sonographic analysis is effective in differentiating benign and malignant tumors of the parotid gland.
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Effects of contamination level of dioxins and related chemicals on thyroid hormone and immune response systems in patients with “Yusho”
TL;DR: This investigation was done using rather small number of Yusho patients, so further large-scale investigations are needed to get more conclusive findings concerning their effects on thyroid hormone and immune response systems.