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Fábio Hissachi Tsuji,Renato Caretta Chambó,Aparecido Donizeti Agostinho,José Carlos Souza Trindade Filho,Carlos Márcio Nóbrega de Jesus 대한비뇨의학회 2014 Investigative and Clinical Urology Vol.55 No.2
Purpose: To assess the pain intensity of patients administered midazolam and fentanylcitrate before undergoing transrectal ultrasound-guided prostate biopsy. Materials and Methods: This was a study in patients with different indications for prostatebiopsy in whom 5 mg of midazolam and 50 μg of fentanyl citrate was administeredintravenously 3 minutes before the procedure. After biopsy, pain was assessed by useof a visual analogue scale (VAS) in three stages: VAS 1, during probe introduction; VAS2, during needle penetration into prostate tissue; and VAS 3, in the weeks followingthe exam. Pain intensity at these different times was tested with stratification by age,race, education, prostate volume, rebiopsy, and anxiety before biopsy. Pain was rankedaccording to the following scores: 0 (no pain), 1–3 (mild pain), 4–7 (moderate pain), and8–10 (severe pain). Statistical analysis was performed by using Kruskal-Wallis andWilcoxon two-tailed tests with a significance of 5%. Results: Pain intensity was not influenced by any risk factors. The mean VAS 1 scorewas 1.95±1.98, the mean VAS 2 score was 2.73±2.55, and the mean VAS 3 score was0.3±0.9, showing greater pain at the time of needle penetration than in other situations(VAS 2>VAS 1>VAS 3, p=0.0013, p=0.0001, respectively). Seventy-five percent of patientsreported a VAS pain scale of less than 3.1 or mild pain. Conclusions: Intravenous sedation and analgesia with midazolam and fentanyl citrateis a good method for reducing pain caused by prostate biopsy, even during probeinsertion.
What Is the Ideal Core Number for Ultrasound-Guided Prostate Biopsy?
Renato Caretta Chambó,Fábio Hissachi Tsuji,Flávio de Oliveira Lima,Hamilto Akihissa Yamamoto,Carlos Márcio Nóbrega de Jesus 대한비뇨의학회 2014 Investigative and Clinical Urology Vol.55 No.11
Purpose: We evaluated the utility of 10-, 12-, and 16-core prostate biopsies for detectingprostate cancer (PCa) and correlated the results with prostate-specific antigen (PSA)levels, prostate volumes, Gleason scores, and detection rates of high-grade prostaticintraepithelial neoplasia (HGPIN) and atypical small acinar proliferation (ASAP). Materials and Methods: A prospective controlled study was conducted in 354 consecutivepatients with various indications for prostate biopsy. Sixteen-core biopsy specimenswere obtained from 351 patients. The first 10-core biopsy specimens were obtainedbilaterally from the base, middle third, apex, medial, and latero-lateral regions. Afterward, six additional punctures were performed bilaterally in the areas more lateralto the base, middle third, and apex regions, yielding a total of 16-core biopsyspecimens. The detection rate of carcinoma in the initial 10-core specimens was comparedwith that in the 12- and 16-core specimens. Results: No significant differences in the cancer detection rate were found between thethree biopsy protocols. PCa was found in 102 patients (29.06%) using the 10-core protocol,in 99 patients (28.21%) using the 12-core protocol, and in 107 patients (30.48%) usingthe 16-core protocol (p=0.798). The 10-, 12-, and 16-core protocols were comparedwith stratified PSA levels, stratified prostate volumes, Gleason scores, and detectionrates of HGPIN and ASAP; no significant differences were found. Conclusions: Cancer positivity with the 10-core protocol was not significantly differentfrom that with the 12- and 16-core protocols, which indicates that the 10-core protocolis acceptable for performing a first biopsy.
Lin, W.,Byrne, T.B.,Kinoshita, M.,McNeill, L.C.,Chang, C.,Lewis, J.C.,Yamamoto, Y.,Saffer, D.M.,Casey Moore, J.,Wu, H.Y.,Tsuji, T.,Yamada, Y.,Conin, M.,Saito, S.,Ito, T.,Tobin, H.J.,Kimura, G.,Kanagaw Elsevier Scientific Publishing Co 2016 Tectonophysics Vol.692 No.2
<P>To better understand the distribution of three dimensional stress states in the Nankai subduction zone, southwest Japan, we review various stress-related investigations carried out in the first and second stage expeditions of the Nankai Trough Seismogenic Zone Experiment (NanTroSEIZE) by the Integrated Ocean Drilling Program (IODP) and compile the stress data. Overall, the maximum principal stress sigma(l) in the shallower levels (<similar to 1 km) is vertical from near the center of forearc basin to near the trench and; the maximum horizontal stress S-Hmax (interpreted to be the intermediate principal stress sigma(2)) is generally parallel to the plate convergence vector. The exception to this generalization occurs along the shelf edge of the Nankai margin where S-Hmax, is along strike rather than parallel to the plate convergence vector. Reorientation of the principal stresses at deeper levels (e.g., >similar to 1 km below seafloor or in underlying accretionary prism) with sigma(1) becoming horizontal is also suggested at all deeper drilling sites. We also make a comparison of the stress state in the hanging wall of the frontal plate-interface between Site C0066 in the Nankai and Site C0019 in the Japan Trench subduction zone drilled after the 2011 Mw 9.0 Tohoku-Oki earthquake. In the Japan Trench, a comparison between stress state before and after the 2011 mega-earthquake shows that the stress changed from compression before the earthquake to extension after the earthquake. As a result of the comparison between the Nankai Trough and Japan Trench, a similar current stress state with trench parallel extension was recognized at both C0006 and C0019 sites. Hypothetically, this may indicate that in Nankai Trough it is still in an early stage of the interseismic cycle of a great earthquake which occurs on the decollement and propagates to the toe (around site C0006). (C) 2015 Elsevier B.V. All rights reserved.</P>
Kim, T.,Ham, C.,Rhee, C.K.,Yoon, S.H.,Tsuji, M.,Mochida, I. Pergamon Press ; Elsevier Science Ltd 2009 Carbon Vol.47 No.1
Correlations between the electrochemical double layer capacitances of various acetylene blacks modified by surface oxidation and heat treatment, and their morphologies are presented. The acetylene blacks were different from each other in primary structural unit size (equivalent to mean particle diameter). They were oxidized in air at 300<SUP>o</SUP>C for 1h to produce graphene sheets protruding from the surfaces of the spherical particles. In addition, the surfaces of the acetylene blacks were modified by heat treatments from 1000<SUP>o</SUP>C to 2800<SUP>o</SUP>C, which resulted in a morphological change from surfaces covered with protruding graphene sheets to ones wrapped with basal planes of graphite. Correlations between the capacitances of the acetylene blacks and the observed morphologies showed that the surface covered with protruding graphene sheets was roughly 10 times more effective in capacitive charging than the surface of graphite basal planes. Specifically, the surface specific capacitance of the edged-graphene-sheet-covering surface was 146mF/m<SUP>2</SUP>, while that of the basal-planes-wrapping surface was 16mF/m<SUP>2</SUP>. It was concluded that the capacitances of the acetylene blacks were mainly defined by surface morphology, which were in turn influenced by structural unit size and degree of oxidation.
Stability Comparison of New Simplified Speed Sensorless Vector Control Systems for Induction Motors
Mangindaan, Glanny M.Ch.,Tsuji, Mineo,Hamasaki, Sin-Ichi Journal of International Conference on Electrical 2014 Journal of international Conference on Electrical Vol.3 No.2
This paper discusses stability of new simplified sensorless vector control systems of induction motors (IM). The simplified sensorless systems estimate the flux angle by using the output voltage of d-axis PI current controller to achieve the q-axis flux zero. Two simplified sensorless systems are studied. The difference of two systems is the presence or absence of a q-axis PI current controller. The systems stability is compared by deriving linear state equations and showing root loci and unstable regions. Furthermore, transient responses and experiment results make clear the stability of the proposed system.