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Volume 71, Issue 2
Displaying 1-7 of 7 articles from this issue
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ORIGINAL
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Tomohiro NISHIDA, Norimitsu SHINOHARA2022 Volume 71 Issue 2 Pages 75-87
Published: 2022
Released on J-STAGE: August 26, 2022
JOURNAL FREE ACCESSTo obtain high-quality magnetic resonance (MR) images, it is necessary to increase the size of the phase-encoding matrix (Mpe) and the number of signal averages (NSA). However, doing so increases the imaging time. In this study, we sought to reduce the imaging time by using deep learning to improve the image quality. The input image was an MR image with a short imaging time, and the training image was a high-quality MR image with a long imaging time. We used a deep denoising super resolution convolutional neural network for image improvement. Each image was divided into small patches and subjected to super-resolution processing. The optimum conditions for the input image were examined by adjusting the Mpe, NSA, and patch size. Furthermore, we examined the clinical conditions and high-quality imaging conditions for the training images. Image improvement was evaluated both objectively by using the peak signalto-noise ratio and structural similarity and subjectively by 25 radiological technologists. It was found that the images with Mpe 256 and NSA 2 and those with Mpe 256 and NSA 1 had the same quality as images obtained under clinical conditions. These results suggest that imaging time can be reduced from 90.5 s to 31.5 s and 59.5 s, respectively, by this method.View full abstractDownload PDF (2295K)
RESEARCH REPORTS
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Yoshitaka ENOMOTO, Shigeki TSUKAMOTO, Akehumi SATO, Yuta KAKIZAKI, Yos ...2022 Volume 71 Issue 2 Pages 88-93
Published: 2022
Released on J-STAGE: August 26, 2022
JOURNAL FREE ACCESSThe Pancreatic Cancer Practice Guidelines (2019 edition) recommend that surgical treatment for pancreatic cancer be performed at facilities with large numbers of surgical cases. Although our hospital is not a so-called high-volume center, we have been actively performing challenging hepatobiliary and pancreatic operations for patients who wish to be treated in our department. We investigated factors including surgery-related factors, perioperative complications, and long-term prognosis, in 78 cases of pancreaticoduodenectomy performed during the 10-year period from 2010 to 2019. There were no surgery-related deaths, the 5-year survival rate for surgical cases of pancreatic head cancer was a relatively good 31%, and the postoperative outcomes and long-term prognoses were comparable to those of high-volume centers. As a regional core hospital, we must continue to provide safe and high-quality medical care.View full abstractDownload PDF (732K) -
Takanori MIURA, Chizuru MITSUI, Kumiko INAGAKI, Asuka TSUBOI, Tomoharu ...2022 Volume 71 Issue 2 Pages 94-100
Published: 2022
Released on J-STAGE: August 26, 2022
JOURNAL FREE ACCESSClinical research is a critical component of evidence-based medicine and is essential for improving the quality of healthcare. However, the shortage of research supervisors and the lack of personnel with sufficient knowledge of research methodology and statistical analysis are obstacles to carrying out research in the clinical setting. Although we have been providing clinical research training for personnel at our hospital, it is not clear whether they are interested in actually conducting clinical research and participating in related educational programs. Therefore, in this study, we conducted a cross-sectional questionnaire survey to gauge their interest in these two areas. Questionnaires were completed by 718 of the 813 the medical personnel who attended our training sessions (88.3% response rate). Fifty-five percent expressed an interest in performing clinical research and data analysis. Among those who were interested in clinical research and data analysis, 75.8% were male, 58.9% were married, and 60.8% had children. Notably, 90.7% of pharmacists and 69.1% of physicians were particularly interested in performing clinical research and data analysis. In addition, medical personnel in their 30s and 40s were more interested in clinical research and data analysis. Among several factors, gender (male) and job title (pharmacist and physician) were strongly associated with interest in clinical research and data analysis. Medical personnel interested in clinical research and data analysis wanted to participate in educational programs on statistical processing, writing papers, and finding research subjects. Medical personnel not interested in clinical research and data analysis wanted to participate in educational programs on searching for articles, evaluating articles, and interpreting data. To address the shortage of research leaders, we believe that education related to clinical research should be provided to personnel interested in conducting clinical research and data analysis. Furthermore, we found that even staff not interested in conducting clinical research and data analysis are interested in educational programs related to clinical research.View full abstractDownload PDF (741K) -
Shintaro NISHIKAWA, Atsushi SEKIMURA, Hiromitsu KUSUNOKI, Yoshiki SATO ...2022 Volume 71 Issue 2 Pages 101-107
Published: 2022
Released on J-STAGE: August 26, 2022
JOURNAL FREE ACCESSThe pathogenicity of SARS-CoV-2 has changed as the virus mutates, with some variants causing waves of new infections. We investigated the pathogenic changes in the virus during waves 3, 4, and 5 in terms of severity, treatment methods, and outcomes in 208 patients with COVID-19 admitted to our hospital. Maximum severity during hospitalization tended to increase in patients with moderate I and II COVID-19 during waves 4 and 5; however, the number of severe cases decreased. Comparison by propensity score matching revealed that the number of patients with moderate I and II COVID-19 also increased significantly during wave 5.View full abstractDownload PDF (739K) -
Minami KATO, Hiroaki NISHIGUTI2022 Volume 71 Issue 2 Pages 108-114
Published: 2022
Released on J-STAGE: August 26, 2022
JOURNAL FREE ACCESSMaxillary impacted supernumerary teeth (MIST) can cause complications such as ectopic eruption, delayed eruption of permanent teeth, and spacing anomalies. This study aimed to investigate the trends in MIST management in the Department of Oral Surgery at Kainan Hospital. We conducted a survey of 84 patients diagnosed with MIST at our hospital from January 2013 to December 2019. We retrospectively analyzed the patients’ sex, age, number of MIST, state of the impacted teeth, treatment, age at the time of surgery, and method of anesthesia. The following findings were obtained: the ratio of males to females was 3:1; age at diagnosis ranged from 4 to 83 years; children (4–11 years old) accounted for 90% of MIST patients; the number of MIST was 1 in 73% of patients and 2 in 27%; 43% of MIST were on the right side, 44% on the left side, and 13% in the middle; the direction of the crown was normal in 39% of patients, inverted in 46%, and horizontal in 13%; the vertical depth from the nasal floor was Type I in 19% of patients, Type II in 29%, and Type III in 40%. Regarding treatment, 85% of patients chose surgery, and 12% of patients chose follow-up. Mean age at surgery was 7 years. The anesthesia method was general anesthesia in 65% of patients, local anesthesia in 34%, and intravenous sedation in 1%. Overall, we found that the vertical depth from the nasal floor of MIST and the patient’s age were the major factors influencing the treatment plan. Therefore, we consider that computed tomography or X-ray imaging should be performed to guide the choice of treatment and the method of anesthesia.View full abstractDownload PDF (920K)
NURSING RESEARCH REPORTS
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Kenzo SHIBAYAMA, Yoshimi MORIWAKI, Tomoko NAKAGAMI2022 Volume 71 Issue 2 Pages 115-121
Published: 2022
Released on J-STAGE: August 26, 2022
JOURNAL FREE ACCESSThe aim of this study was to compare changes in the amount of palmar sweating, measured using a portable hygrometric sweating meter, with changes in heart rate (HR) and percutaneous arterial blood oxygen saturation (Spo2) measured using a pulse oximeter, after active standing. Participants were 20 healthy adults (mean age 20.9±0.8 years). Compared with a resting HR of 67.9±5.4 beats / min, HR was highest at 91.7±15.8 beats / min after 10s of active standing and then decreased to 86.4±13.3 beats / min at 20s. However, HR remained high at approximately 80 beats / min between 20 and 180s of active standing. The difference in HR between 10 and 180s of active standing was significant. Spo2 was significantly decreased (98.1±1.0 %) after 10s of active standing compared with the resting value (99.1±1.3 %) and remained lower than the resting value for 180s, but the difference for periods longer than 10s was not significant. The amount of palmar sweating significantly increased (0.26±0.06 mg / min / cm2) after 10s of active standing compared with the resting value (0.0±0.0 m g/ min / cm2) but then decreased for 180s after that, and the difference for periods longer than 10s was not significant. We observed that HR continued to increase for the first 180s of active standing, but the amount of palmar sweating was significantly increased only for the first 10s of active standing. In a future study, we plan to investigate whether the measured amount of palmar sweating can be used as an easy and noninvasive indicator in acute myocardial infarction patients undergoing heart rehabilitation.View full abstractDownload PDF (1321K) -
Ayami HAYASHI, Motomi YOKOTA2022 Volume 71 Issue 2 Pages 122-132
Published: 2022
Released on J-STAGE: August 26, 2022
JOURNAL FREE ACCESSThis study sought to clarify nurses' thoughts on the patient–nurse relationship and nursing care for patients with poorly controlled diabetes and to explore the relationship between them. Semi-structured interviews were conducted with 10 nurses, and the interview data were qualitatively and inductively analyzed. The results of the analysis revealed five thoughts on the patient–nurse relationship and six thoughts on nursing care for patients with poorly controlled diabetes. The nurses’ thoughts on the patient–nurse relationship where they wanted patients to follow their instructions, wanted to avoid patients who hurt their feelings, and wanted to receive positive evaluations as a nurse from both patients and other health care providers were connected with the nurses’ following thoughts on nursing care for patients with poorly controlled diabetes: diabetes is a controllable disease, its deterioration is attributable to patients’ lack of self-care, and caring for such patients is futile. On the other hand, the nurses’ thoughts on the patient–nurse relationship where they wanted to respect patients’ dignity and for patients to understand their sincerity were connected with the following thoughts on nursing care for patients with poorly controlled diabetes: strong hope that their patients’ conditions would improve and diabetes is a difficult disease to live with. However, repeated hospitalization of patients led the nurses to think that it was difficult to understand the patients’ thoughts. The results of this study suggest the importance of respecting patients’ dignity in nursing care for patients with poorly controlled diabetes.View full abstractDownload PDF (817K)
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