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The role of lymphatic interventional radiology for postoperative lymphorrhea
Shuji Kariya,Shintaro Yamamoto,Miyuki Nakatani,Yasuyuki Ono,Takuji Maruyama,Noboru Tanigawa 소화기인터벤션의학회 2022 Gastrointestinal Intervention Vol.11 No.4
Lymphorrhea after gastrointestinal surgery may be treated conservatively or surgically, and treatment by lymphatic interventional radiology has also recently come into use. From pedal lymphangiography, intranodal lymphangiography was widely adopted, enabling the site of lymphorrhea to be identified and its approach to be planned, and embolization for lymphorrhea is now becoming feasible in an increasing number of patients. Even for patients in whom embolization is infeasible, identifying the site of leakage and providing the surgeon with this information is useful. Although this technique is still under development, interventional radiologists are now able to play a role in the treatment of lymphorrhea. Herein, we discuss lymphatic interventional radiology for lymphorrhea following gastrointestinal surgery.
The role of lymphatic interventional radiology for postoperative lymphorrhea
Shuji Kariya,Shintaro Yamamoto,Miyuki Nakatani,Yasuyuki Ono,Takuji Maruyama,Noboru Tanigawa 소화기인터벤션의학회 2022 International journal of gastrointestinal interven Vol.11 No.4
Lymphorrhea after gastrointestinal surgery may be treated conservatively or surgically, and treatment by lymphatic interventional radiology has also recently come into use. From pedal lymphangiography, intranodal lymphangiography was widely adopted, enabling the site of lymphorrhea to be identified and its approach to be planned, and embolization for lymphorrhea is now becoming feasible in an increasing number of patients. Even for patients in whom embolization is infeasible, identifying the site of leakage and providing the surgeon with this information is useful. Although this technique is still under development, interventional radiologists are now able to play a role in the treatment of lymphorrhea. Herein, we discuss lymphatic interventional radiology for lymphorrhea following gastrointestinal surgery.
Pilot Study for Considering Subthalamic Nucleus Anatomy during Stimulation Using Directional Leads
Takashi Asahi,Kiyonobu Ikeda,Jiro Yamamoto,Hiroyuki Tsubono,Shuji Sato 대한파킨슨병및이상운동질환학회 2019 Journal Of Movement Disorders Vol.12 No.2
ObjectiveDirectional leads are used for deep brain stimulation (DBS). Two of the four contacts of the leads are divided into three parts, enabling controlled stimulation in a circumferential direction. The direction of adverse effects evoked by DBS in the subthalamic nucleus (STN) and stimulation strategies using directional leads were evaluated. MethodsDirectional leads were implanted into the bilateral STN of six parkinsonian patients (1 man, 5 women; mean age 66.2 years). The contact centers were located within the upper border of the STN, and the locations were identified electrically using microrecordings. Adverse effects were evaluated with electrical stimulation (30 μs, 130 Hz, limit 11 mA) using the directional part of each lead after surgery, and the final stimulation direction was investigated. Unified Parkinson’s disease rating scale (UPDRS) scores were evaluated before and after DBS. ResultsFifty-six motor and four sensory symptoms were evoked by stimulation; no adverse effect was evoked in 14 contacts. Motor and sensory symptoms were evoked by stimulation in the anterolateral direction and medial to posterolateral direction, respectively. Stimulation in the posteromedial direction produced adverse effects less frequently. The most frequently used contacts were located above the STN (63%), followed by the upper part of the STN (32%). The mean UPDRS part III and dyskinesia scores decreased after DBS from 30.2 ± 11.7 to 7.2 ± 2.9 and 3.3 ± 2.4 to 0.5 ± 0.8, respectively. ConclusionThe incidence of adverse effects was low for the posteromedial stimulation of the STN. Placing the directional part of the lead above the STN may facilitate the control of dyskinesia.
Inoue, Taketo,Yamashita, Yoshiki,Tsujimoto, Yoshiko,Yamamoto, Shuji,Taguchi, Sayumi,Hirao, Kayoko,Uemura, Mikiko,Ikawa, Kayoe,Miyazaki, Kazunori The Korean Society for Reproductive Medicine 2017 Clinical and Experimental Reproductive Medicine Vol.44 No.3
Objective: Oocyte degeneration often occurs after intracytoplasmic sperm injection (ICSI), and the risk factor is low-quality oocytes. The follicular fluid (FF) provides a crucial microenvironment for oocyte development. We investigated the relationships between the FF volume aspirated from individual follicles and oocyte retrieval, oocyte maturity, oolemma stretchability, fertilization, and development. Methods: This retrospective study included data obtained from 229 ICSI cycles. Ovarian stimulation was performed according to a gonadotropin-releasing hormone antagonist protocol. Each follicle was individually aspirated and divided into six groups according to FF volume ( < 1.0, 1.0 to < 2.0, 2.0 to < 3.0, 3.0 to < 4.0, 4.0 to < 5.0, and ${\geq}5.0mL$). Oolemma stretchability during ICSI was evaluated using a mechanical stimulus for oolemma penetration, that is, the stretchability was assessed by oolemma penetration with aspiration (high stretchability) or without aspiration (low stretchability). Results: Oocyte retrieval rates were significantly lower in the < 1.0 mL group than in the ${\geq}1.0mL$ groups (46.0% [86/187] vs. 67.5%-74.3% [172/255 to 124/167], respectively; p< 0.01). Low oolemma stretchability was significantly more common in the < 1.0 mL group than in the ${\geq}1.0mL$ groups during ICSI (22.0% [13/59] vs. 5.8%-9.4% [6/104 to 13/139], respectively; p= 0.018). There was a relationship between FF volume and oolemma stretchability. However, there were no significant differences in the rates of fertilization, cleavage, ${\geq}7$ cells at day 3, and blastocyst development among all groups. Conclusion: FF volume is potentially associated with the stretchability of metaphase II oolemma during ICSI. Regarding oolemma stretchability, ensuring a uniform follicular size during ovarian stimulation is crucial to obtain good-quality oocytes.
Measurement of the Resonance Integral for the 115In(n,g)116In Reaction
Jungran Yoon,Taeik Ro,Katsuhei Kobayashi,Samyol Lee,Shuji Yamamoto 한국물리학회 2004 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.44 No.4
The resonance integral of the 115In(n, )116In reaction has been measured by using the Kyoto University Reactor (KUR) of the Research Reactor Institute, Kyoto University (KURRI), which has a 1/E standard neutron spectrum eld. The activation method was employed to measure the resonance integral. A high-purity Ge (HPGe) detector was used to measure the -rays from the irradiated 115In sample and the 197Au monitor wire. A ux monitor wire, where was a Au/Al alloy wire, was irradiated together with the In/Al alloy sample to measure the neutron ux at the irradiation position. The resonance integral was obtained relative to the reference value (1550 28 b) for the 197Au(n, )198Au reaction. The current resonance integral was obtained as 3275 134 b. Our previous result (dierential data) obtained by using a time-of- ight method with a linac is close to the current result, within the experimental error. The previous measurements, the results evaluated in ENDF/B-VI, and Mughabghab's data are also in good agreement with the current result within the experimental error. However, the JENDL-3.3 and the JEF-2.2 results are a little lower.
( Naoki Minami ),( Minoru Matsuura ),( Yorimitsu Koshikawa ),( Satoshi Yamada ),( Yusuke Honzawa ),( Shuji Yamamoto ),( Hiroshi Nakase ) 대한장연구학회 2017 Intestinal Research Vol.15 No.1
Background/Aims: Our physicians work to expand the possibilities to treat female patients with inflammatory bowel disease (IBD) who wish to become pregnant. Although many drugs, including 5-aminosalicylate (5-ASA), corticosteroids, immunomodulators, and biologics, are used safely during pregnancy, few reports have described the therapeutic regimen throughout pregnancy and the management of patients who relapse during pregnancy precisely. The aim of this study was to assess the management of patients with IBD during pregnancy. Methods: We identified 19 patients (five with Crohn`s disease and 14 with ulcerative colitis [UC]) who became pregnant with a total of 23 pregnancies between May 2005 and May 2015 by reviewing the medical records of Kyoto University Hospital. The following data were collected: the maternal variables, the IBD treatment type, the disease activity, the pregnancy outcome, and the mode of delivery. Results: Among the 19 patients, 18 had become pregnant after being diagnosed with IBD, while one had developed UC newly after pregnancy. Throughout the gestation, all patients were treated with probiotics, 5-ASA, prednisolone, cytapheresis, or infliximab. The relapse rate during pregnancy was 21.7% (5/23 cases). The five patients who experienced a relapse were able to pursue their pregnancy after intensification of their treatments. There were no adverse fetal or neonatal problems, except in one case that required an emergency Caesarean section because of placental dysfunction and in which a very low-birth-weight infant was born preterm. Conclusions: Our present data confirmed that even if the disease flares up during pregnancy, good pregnancy outcomes can be achieved with an optimal intensification of the patient`s treatment. (Intest Res 2017;15:90-96)
New Method to Measure the Rise Time of a Fast Pulse Slicer for Laser Ion Acceleration Research
Mori, Michiaki,Yogo, Akifumi,Kiriyama, Hiromitsu,Nishiuchi, Mamiko,Ogura, Koichi,Orimo, Satoshi,Ma, Jinglong,Sagisaka, Akito,Kanazawa, Shuhei,Kondo, Shuji,Nakai, Yoshiki,Akutsu, Atsushi,Yamamoto, Yoic IEEE 2008 IEEE transactions on plasma science Vol.36 No.4
<P> A dependence of cutoff proton kinetic energy on laser prepulse duration has been observed. Amplified spontaneous emission pedestal duration is controlled by a fast electrooptic pulse slicer where the rise time is estimated to be 130 ps. We demonstrate a new correlated spectral technique for determining this rise time using a stretched frequency-chirped pulse. </P>