1.A Case of Endovascular Aortic Repair with a Vascular Embolic Device and Stent-Graft for the Anastomotic Pseudoaneurysm in the Ascending Aorta
Soichi Asano ; Naoki Hayashida ; Masanao Ohba ; Kozo Matsuo ; Hiroyuki Kito ; Nobuyuki Hirose ; Takuto Maruyama ; Masashi Kabasawa ; Hideomi Hasegawa ; Hirokazu Murayama
Japanese Journal of Cardiovascular Surgery 2016;45(5):238-241
We report a case of a 72-year-old woman, who had an anastomotic pseudoaneurysm in the ascending aorta, successfully treated by endovascular aortic repair with vascular embolic devise and stent-graft. It seemed to be high risk to achieve conventional surgery with extracorporeal circulation, therefore we selected endovascular treatment because she had a bleeding tendency which derived from disseminated intravascular coagulation. Then, we adopted stent-grafting with a vascular embolic device, because the distal side of pseudoaneurysm had too short a landing zone to cover the stent-graft only. The patient well tolerated this procedure and her postoperative course was uneventful. The pseudoaneurysm shrank at 6th months after operation.
2.Awareness Survey on Handling and Exposure of Anti-Cancer Drugs among the Hospital Pharmacists
Emi KABASAWA ; Hiroyuki SHIMIZU ; Takako NAKAMURA ; Takaaki SUZUKI ; Itsuko ISHII
Japanese Journal of Drug Informatics 2019;20(4):213-219
Objective: Anticancer drugs have carcinogenic potential and are associated with occupational exposure risks among healthcareprofessionals who handle them. To minimize occupational exposure, healthcare workers must be adequately aware of the risks ofanticancer drugs and the appropriate techniques for their preparation. However, there is little information on the awareness ofpharmacists who prepare anticancer drugs in medical settings. The aim of this study was to investigate awareness of hazardous drugs(HD) and appropriate preparation techniques among pharmacists, and identify problems that pharmacists experience in managing theirexposure to anticancer drugs.Design: Questionnaire.Method: The questionnaire was sent by e-mail or mail to pharmacists employed at 270 institutions who belonged to the Chiba Societyof Hospital Pharmacists. From September 2015 to March 2016, respondents completed the questionnaires voluntarily and returnedthem by mail. Returning the questionnaire was regarded as informed consent to participate in this survey. Based on the completedquestionnaires, we examined the awareness of pharmacists in their daily work.Results: In total, 218 questionnaires were returned (collection rate: 10%). Awareness of the risks of anticancer drugs was high, and ahigh percentage of respondents use personal protective equipment during drug preparation, but the use of closed system drug transferdevices was low. Overall, however, it was found that many pharmacists had insufficient understanding of safe handling techniques.Discussion: Despite some recognition of the risks associated with exposure to HD, the measures taken to prevent exposure toHDs―including anticancer drugs―were inadequate and this issue must be urgently addressed by medical institutions and pharmacists.Countermeasures such as training sessions in the handling of HDs and the development of manuals are needed for each facility.
3.Influence of Signal Intensity Non-Uniformity on Brain Volumetry Using an Atlas-Based Method.
Masami GOTO ; Osamu ABE ; Tosiaki MIYATI ; Hiroyuki KABASAWA ; Hidemasa TAKAO ; Naoto HAYASHI ; Tomomi KUROSU ; Takeshi IWATSUBO ; Fumio YAMASHITA ; Hiroshi MATSUDA ; Harushi MORI ; Akira KUNIMATSU ; Shigeki AOKI ; Kenji INO ; Keiichi YANO ; Kuni OHTOMO
Korean Journal of Radiology 2012;13(4):391-402
OBJECTIVE: Many studies have reported pre-processing effects for brain volumetry; however, no study has investigated whether non-parametric non-uniform intensity normalization (N3) correction processing results in reduced system dependency when using an atlas-based method. To address this shortcoming, the present study assessed whether N3 correction processing provides reduced system dependency in atlas-based volumetry. MATERIALS AND METHODS: Contiguous sagittal T1-weighted images of the brain were obtained from 21 healthy participants, by using five magnetic resonance protocols. After image preprocessing using the Statistical Parametric Mapping 5 software, we measured the structural volume of the segmented images with the WFU-PickAtlas software. We applied six different bias-correction levels (Regularization 10, Regularization 0.0001, Regularization 0, Regularization 10 with N3, Regularization 0.0001 with N3, and Regularization 0 with N3) to each set of images. The structural volume change ratio (%) was defined as the change ratio (%) = (100 x [measured volume - mean volume of five magnetic resonance protocols] / mean volume of five magnetic resonance protocols) for each bias-correction level. RESULTS: A low change ratio was synonymous with lower system dependency. The results showed that the images with the N3 correction had a lower change ratio compared with those without the N3 correction. CONCLUSION: The present study is the first atlas-based volumetry study to show that the precision of atlas-based volumetry improves when using N3-corrected images. Therefore, correction for signal intensity non-uniformity is strongly advised for multi-scanner or multi-site imaging trials.
Adult
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Atlases as Topic
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Brain Mapping/*methods
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Female
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Humans
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Image Enhancement/methods
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Image Processing, Computer-Assisted/*methods
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Magnetic Resonance Imaging/*methods
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Male
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Middle Aged
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Software
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Statistics, Nonparametric