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8. Retained Barium in the Appendix Is Difficult to Distinguish from Surgical Remnants following Laparoscopic Surgery

Author

Sato, Masakazu, Koizumi, Minako, Hino, Takahiro, Takahashi, Yu, Nagashima, Natsuki, Itaoka, Nao, Ueshima, Chiharu, Nakata, Maki, and Hasumi, Yoko

Subjects
Article Subject, digestive system diseases
Abstract

Surgical materials, such as gauze, can be accidentally left inside of patients following surgery. This iatrogenic complication should be avoided and is often prevented by routine X-ray analysis after surgical abdominal procedures. We report a case of retained barium in the appendix that was difficult to distinguish from surgical remnants. A 41-year-old Japanese female was diagnosed with uterine leiomyoma and underwent laparoscopic myomectomy. The postoperative X-ray test showed a cord-like material in the lower right abdomen that was not captured in the preoperative X-ray test two months prior to the operation. Because of this difference, the area was reexamined laparoscopically. After examination, we concluded that the cord-like material in X-ray tests was in fact retained barium in the appendix. Barium can be retained in the appendix for long periods of time, and retained barium in the appendix can be captured radiographically and can mimic the appearance of surgical remnants, appearing as a cord-like material. The knowledge above combined with detailed interviews before surgery could prevent such confusion during interpretation of X-ray tests after surgery.

Published
2018
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11. Computer vision for total laparoscopic hysterectomy

Author

Sato, Masakazu, primary, Koizumi, Minako, additional, Nakabayashi, Minoru, additional, Inaba, Kei, additional, Takahashi, Yu, additional, Nagashima, Natsuki, additional, Ki, Hiroshi, additional, Itaoka, Nao, additional, Ueshima, Chiharu, additional, Nakata, Maki, additional, and Hasumi, Yoko, additional

Published
2018
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13. Computer vision for total laparoscopic hysterectomy.

Author

Sato, Masakazu, Koizumi, Minako, Nakabayashi, Minoru, Inaba, Kei, Takahashi, Yu, Nagashima, Natsuki, Ki, Hiroshi, Itaoka, Nao, Ueshima, Chiharu, Nakata, Maki, and Hasumi, Yoko

Subjects
COMPUTER vision, HYSTERECTOMY, BIOMEDICAL engineering, LAPAROSCOPIC surgery, MEDICAL ethics committees
Abstract

Introduction: Laparoscopic surgery is widely performed in various surgical fields, but this technique requires time for surgeons to master. However, at the same time, there are many advantages in visualizing the operative field through a camera. In other words, we can visualize what we cannot see with our own eyes by using augmented reality and computer vision. Therefore, we investigated the possibilities and usefulness of computer vision in total laparoscopic hysterectomy. Methods: This study was approved by the Mitsui Memorial Hospital ethics committee. Patients who underwent total laparoscopic hysterectomy at Mitsui Memorial Hospital from January 2015 to December 2015 were enrolled. We evaluated 19 cases in which total laparoscopic hysterectomy was performed by the same operator and assistant. We used the Open Source Computer Vision Library for computer vision analysis. The development platform used in this study was a computer operating on Mac OS X 10.11.3. Results: We created panoramic images by matching features with the AKAZE algorithm. Noise reduction methods improved haziness caused by using energy devices. By abstracting the color of the suture string, we succeeded in abstracting the suture string from movies. We could not achieve satisfactory results in detecting ureters, and we expect that creative ideas for ureter detection may arise from collaborations between surgeons and medical engineers. Conclusions: Although this was a preliminary study, the results suggest the utility of computer vision in assisting laparoscopic surgery. [ABSTRACT FROM AUTHOR]

Published
2019
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14. 女性骨盤底障害の診療と泌尿器科への期待

Author

Nakata, Maki

Subjects
body regions, Female pelvic floor dysfunction, 494.9, Pelvic organ prolapse
Abstract

With declining birthrate and graying of population, the significance of female pelvic floor dysfunction (FPFD) and importance of its medical treatment are being emphasized in developed nations. In our country, more and more urological departments have started working on FPFD in the past several years. Compared to the past times when only gynecologists treated pelvic organ prolapse, now pelvic support problems and its inherent lower urinary tract dysfunction are treated simultaneously in a better way by urologists' participation. The urological approach has added compound eyes to pelvic relaxation disorders. Further effort is expected to help develop novel technology in the treatment of stress urinary incontinence. Although it is certain that female pelvic floor medicine is beneficial to our society, its possibility and limitation remain to be studied.

Published
2007

17. Comparison of Laparoscopically Assisted Myomectomy(LAM) and Laparoscopic Myomectomy (LM) in View Point of Surgical Invasiveness

Author

Itabashi, Kana, primary, Nakabayashi, Minoru, additional, Suzuki, Kensuke, additional, Sugiura, Yukiko, additional, Konishi, Hisaya, additional, Sayama, Seisuke, additional, Okabe, Yoko, additional, Takada, Toshio, additional, Kakinoki, Shigeko, additional, Nakata, Maki, additional, and Kojima, Toshiyuki, additional

Published
2013
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23. Anti-Toxoplasma Antibody Prevalence, Primary Infection Rate, and Risk Factors in a Study of Toxoplasmosis in 4,466 Pregnant Women in Japan

Author

Sakikawa, Makiko, Noda, Shunichi, Hanaoka, Masachi, Nakayama, Hirotoshi, Hojo, Satoshi, Kakinoki, Shigeko, Nakata, Maki, Yasuda, Takashi, Ikenoue, Tsuyomu, and Kojima, Toshiyuki

Abstract

Toxoplasmosis is a zoonosis caused by infection with Toxoplasma gondii and is prevalent worldwide under various climatic conditions. It is usually asymptomatic, but infection in pregnant women can pose serious health problems for the fetus. However, epidemiological information regarding toxoplasmosis in Japanese pregnant women is limited. This study aimed to determine the prevalence of anti-Toxoplasma antibodies, the primary infection rate, and the risk factors for toxoplasmosis in Japanese pregnant women. We measured anti-Toxoplasma antibody titers in 4,466 pregnant women over a period of 7.5 years and simultaneously conducted interviews to identify the risk factors for toxoplasmosis. The overall prevalence of anti-Toxoplasma antibodies was 10.3%, and it was significantly higher in women aged above 35 years. The rate of primary Toxoplasma infection during pregnancy was estimated to be 0.25%. A possibility of infection in the later stages of pregnancy was identified for those women who were not infected in the early stages. A history of raw meat intake was identified to be a risk factor related to toxoplasmosis. Therefore, to lower the risk of toxoplasmosis, pregnant women should refrain from eating raw and undercooked meat and maintain personal hygiene.

Published
2012

24. Anti-ToxoplasmaAntibody Prevalence, Primary Infection Rate, and Risk Factors in a Study of Toxoplasmosis in 4,466 Pregnant Women in Japan

Author

Sakikawa, Makiko, Noda, Shunichi, Hanaoka, Masachi, Nakayama, Hirotoshi, Hojo, Satoshi, Kakinoki, Shigeko, Nakata, Maki, Yasuda, Takashi, Ikenoue, Tsuyomu, and Kojima, Toshiyuki

Abstract

ABSTRACTToxoplasmosis is a zoonosis caused by infection with Toxoplasma gondiiand is prevalent worldwide under various climatic conditions. It is usually asymptomatic, but infection in pregnant women can pose serious health problems for the fetus. However, epidemiological information regarding toxoplasmosis in Japanese pregnant women is limited. This study aimed to determine the prevalence of anti-Toxoplasmaantibodies, the primary infection rate, and the risk factors for toxoplasmosis in Japanese pregnant women. We measured anti-Toxoplasmaantibody titers in 4,466 pregnant women over a period of 7.5 years and simultaneously conducted interviews to identify the risk factors for toxoplasmosis. The overall prevalence of anti-Toxoplasmaantibodies was 10.3%, and it was significantly higher in women aged above 35 years. The rate of primary Toxoplasmainfection during pregnancy was estimated to be 0.25%. A possibility of infection in the later stages of pregnancy was identified for those women who were not infected in the early stages. A history of raw meat intake was identified to be a risk factor related to toxoplasmosis. Therefore, to lower the risk of toxoplasmosis, pregnant women should refrain from eating raw and undercooked meat and maintain personal hygiene.

Published
2012
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25. [Medical treatment for female pelvic floor dysfunction and prospective role of urologists].

Author

Nakata M

Subjects
Female, Humans, Physician's Role, Urinary Incontinence, Stress therapy, Urology, Uterine Prolapse therapy, Female Urogenital Diseases therapy, Pelvic Floor
Abstract

With declining birthrate and graying of population, the significance of female pelvic floor dysfunction (FPFD) and importance of its medical treatment are being emphasized in developed nations. In our country, more and more urological departments have started working on FPFD in the past several years. Compared to the past times when only gynecologists treated pelvic organ prolapse, now pelvic support problems and its inherent lower urinary tract dysfunction are treated simultaneously in a better way by urologists' participation. The urological approach has added compound eyes to pelvic relaxation disorders. Further effort is expected to help develop novel technology in the treatment of stress urinary incontinence. Although it is certain that female pelvic floor medicine is beneficial to our society, its possibility and limitation remain to be studied.

Published
2007

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