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MRI in the Diagnosis of Endometriosis and Related Diseases
Kido Aki,Himoto Yuki,Moribata Yusaku,Kurata Yasuhisa,Nakamoto Yuji 대한영상의학회 2022 Korean Journal of Radiology Vol.23 No.4
Endometriosis, a common chronic inflammatory disease in female of reproductive age, is closely related to patient symptoms and fertility. Because of its high contrast resolution and objectivity, MRI can contribute to the early and accurate diagnosis of ovarian endometriotic cysts and deeply infiltrating endometriosis without the need for any invasive procedure or radiation exposure. The ovaries, which are the most frequent site of endometriosis, can be afflicted by multiple related conditions and diseases. For the diagnosis of deeply infiltrating endometriosis and secondary adhesions among pelvic organs, fibrosis around the ectopic endometrial gland is usually found as a T2 hypointense lesion. This review summarizes the MRI findings obtained for ovarian endometriotic cysts and their physiologically and pathologically related conditions. This article also includes the key imaging findings of deeply infiltrating endometriosis.
AN ALGORITHM OF ADAPTING CONTROL OF FILTER COEFFICIENTS FOR ACTIVE NOISE CONTROL
Kido, Keniti,Itakura, Hidekiyo,Ono, Takahiko,Suzuki, Hideo 대한전자공학회 1992 HICEC:Harbin International Conference on Electroni Vol.1 No.1
A new method for formulating the algorithm of adaptive control of filter coefficients for the active noise control and system identification is introduced. The theoretical explanation is based on the principle of convolution. The result includes the LMS algorithm as a special case. The effectiveness of the algorithms introduced in this paper is confirmed by the computer simulation and the application to the duct noise suppression systems.
Kido, Hiroyuki,Nakashima, Kenshiro,Nakahara, Masaya,Hashimoto, Jun The Korean Society of Combustion 2001 한국연소학회지 Vol.6 No.2
In order to elucidate the turbulent burning velocity of the two-component fuel mixtures, the lean and rich two-component fuel mixtures, where methane, propane and hydrogen were used as fuels, were prepared keeping the laminar burning velocity nearly the same value. Clear difference in the measured turbulent burning velocity at the same turbulence intensity can be seen among the two-component fuel mixtures with different addition rate of fuel, even under nearly the same laminar burning velocity. The burning velocities of lean mixtures change almost monotonously as changing addition rate, those of rich mixtures, however, do not show such a monotony. These phenomena can be explained qualitatively from the local burning velocities, estimated by considering the preferential diffusion effect for each fuel component. In addition, a prediction expression of turbulent burning velocity proposed for the one-component fuel mixtures can be applied to the two-component fuel mixtures by using the estimated local burning velocity of each fuel mixture.
Pulmonary Metastases After Low-Dose-Rate Brachytherapy for Localized Prostate Cancer
Masahito Kido,Hidetoshi Kuruma,Hiroshi Sasaki,Kenta Miki,Manabu Aoki,Takahiro Kimura,Hiroyuki Takahash,Chihiro Kanehira,Shin Egawa 대한비뇨의학회 2014 Investigative and Clinical Urology Vol.55 No.5
Purpose: To analyze unusual events and focus discussion on pulmonary metastasis in particular after low-dose-rate brachytherapy (LDR-BT) for prostate cancer (PCa). Materials and Methods: A total of 616 consecutive patients who had undergone LDR-BT for clinically localized PCa at Jikei University Hospital between October 2003 and April 2010 were enrolled in this study. Follow-up information was summarized, and patterns of biochemical recurrence and clinical outcome were investigated. Results: Disease risk was stratified as low-risk in 231 patients, intermediate-risk in 365, and high-risk in 20, respectively. Of these patients, 269 (43.7%) had received hormonal therapy (HT) in combination with LDR-BT, and 80 (13.0%) had received external beam radiotherapy (EBRT). Average dosimetric parameter values with and without EBRT were 95.3% and 94.2% for V100, 132.8 Gy and 164.2 Gy for D90, and 180.6 Gy2 and 173.7 Gy2 for the biologically effective dose. Biochemical recurrence was noted in 14 patients (6.1%) in the low-risk group, 25 patients (6.8%) in the intermediate-risk group, and 6 patients (30.0%) in the high-risk group, respectively. In these cases of biochemical recurrence, 9 (64.3%), 13 (52.0%), and 4 patients (66.7%) in each respective risk group showed signs of clinical recurrence. Five patients (19.2%) with clinical recurrence developed pulmonary metastases, of which 4 were isolated lesions. All tumors responded favorably to subsequent HT. Conclusions: LDR-BT for biologically aggressive PCa may be linked to possible pulmonary metastasis owing to tumor dissemination during seed implantation. This information is important in planning adequate treatment for these patients.
Attenuated Allergenic Activity of Ovomucoid After Electrolysis
Jun Kido,Tomoaki Matsumoto 대한천식알레르기학회 2015 Allergy, Asthma & Immunology Research Vol.7 No.6
Ovomucoid (OMC) is the most prominent allergen causing hen’s egg allergy, containing disulfide (S-S) bonds that may be responsible for its allergic action. As S-S bonds may be reduced during electrolysis, this study was undertaken to evaluate modulation of the allergic action of OMC after electrolysis. Electrolysis was carried out for 1% OMC containing 1% sodium chloride for 30 minutes with a voltage difference of 90 V, 0.23 A (30 mA/ cm2). Protein assays, amino acid measurement, and mass spectrometry in untreated OMC and OMC on both the anode and cathode sides after electrolysis were performed. Moreover, 21 patients with IgE-mediated hen’s egg allergy were evaluated by using the skin prick test (SPT) for untreated OMC and OMC after electrolysis. The allergic action of OMC was reduced after electrolysis on both the anode and cathode sides when evaluated by the SPT. The modifications of OMC on electrolysis caused the loss of 2 distinct peptide fragments (57E-63K and 123H-128R) as seen on matrixassociated laser desorption/ionization time-of-flight mass spectrometry. The total free SH groups in OMC were increased on the cathode side. Although the regions of S-S broken bonds were not determined in this study, the change in S-S bonds in OMC on both the anode and cathode sides may reduce the allergenic activity.