著者

原田 耕平 千葉 彩佳 溝延 数房 沼澤 香夏子 今井 達也

出版者

公益社団法人 日本放射線技術学会

雑誌

日本放射線技術学会雑誌 (ISSN:03694305)

巻号頁・発行日

vol.72, no.11, pp.1098-1104, 2016 (Released:2016-11-20)

参考文献数

12

被引用文献数

1

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Preoperative three-dimensional computed tomography (3DCT) of the liver is the most important examination in performing preoperative simulation. Detailed visualization of the portal vein using the workstation is critical to enable accurate liver segmentation. However, the timing of imaging in the portal venous phase has mostly been reported equivalent to that of the liver screening examinations commonly performed. The purpose of this study was to examine the optimal timing of image capture to create the best portal vein visualization in preoperative 3DCT of the liver. Seventy-nine patients who underwent hepatectomy for malignant liver tumors were enrolled in this study. All patients were preoperatively examined using protocol A (imaging method separated into a portal venous phase and a hepatic venous phase) and then examined 1 week after surgery using protocol B (normal liver screening protocol). We first established the regions of interest in the portal vein and the hepatic vein and then compared CT values for these regions under protocol A and protocol B. The average CT value of the portal vein in protocol A and B was 239.8±28.1 HU and 202.2±18.5 HU, respectively. The average CT value of the portal vein in protocol A was significantly higher compared with protocol B (p<0.01). By introducing separate timing for portal venous phase imaging before preoperative 3DCT (protocol A), it is possible to satisfactorily depict the portal vein.

著者

今井 達也

出版者

Japan Communication Association

雑誌

日本コミュニケーション研究 (ISSN:21887721)

巻号頁・発行日

vol.45, no.1, pp.5-25, 2016-11-30 (Released:2017-05-20)

参考文献数

48

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Stigma associated with schizophrenia has been found to negatively impact the communication a schizophrenic individual has with others in face-to-face interactions, but the negative effect on computer-mediated communication has not been fully explored. Four hundred and fourteen participants interacted with a hypothetical target on Facebook, who was believed to have either depression, schizophrenia, or a cavity (i.e., the control group). Results indicated that participants rejected the target labeled as schizophrenic more than the targets without mental illness or labeled as depressive. The mental illness stigma effect on rejection was partially mediated by a low predicted outcome value attached to the schizophrenic target. Further, the target with schizophrenia received more rejecting messages than accepting messages. However, there was not a significant difference between the frequency of rejecting messages and that of the accepting messages the depressed target received. Theoretical and practical contributions were considered.