Takayoshi Ogawa

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We have been engaged in clinical work using DSA, the first in the world, under a joint study agreement with Hitachi Medical Corporation on the use of the Flat Panel Detector (FPD) since 2001. We are now in the stage where a certain evaluation process has been finished, but the FPD performance study in angiography has just begun, and, therefore, its clinical(More)
A 69-year-old man was referred to our hospital because of hepatic failure after extracorporeal shock wave lithotripsy. The diagnosis of urinary tract infection and fungemia due to Candida albicans associated with decompensated liver cirrhosis and renal failure was made. Bilateral endogenous endophthalmitis developed during hospitalization. Candidemia,(More)
BACKGROUND The objective of this study was to review our experience with radical prostatectomy (RP) as monotherapy for men with high-risk prostate cancer (PCa). PATIENTS AND METHODS This study included 382 consecutive patients who were diagnosed with high-risk PCa according to the D'Amico definition and subsequently underwent RP without neoadjuvant(More)
The implementation of the Japanese guidelines for prevention of postoperative infection in urological surgery, based on the Centers for Disease Control and Prevention (CDC) was surveyed. In October 2006, questionnaires about selection of prophylactic antibiotics, timing and period of administration, were distributed to 25 urologists. Surgical procedures(More)
We consider the following nonlinearly perturbed version of the elliptic-parabolic system of Keller-Segel type: ∂tu−∆u +∇ · (u∇v) = 0, t > 0, x ∈ R, −∆v + v − v = u, t > 0, x ∈ R, u(0, x) = u0(x) ≥ 0, x ∈ R, where 1 < p < ∞. It has already been shown that the system admits a positive solution for a small nonnegative initial data in L1(R2) ∩ L2(R2) which(More)
BACKGROUND The objective of this study was to retrospectively review oncological outcomes in patients with stage I testicular germ cell tumor (GCT). PATIENTS AND METHODS This study included 265 consecutive Japanese men undergoing orchiectomy for stage I testicular GCT, and a retrospective review of their records was performed. RESULTS Of these 265(More)
We had the chance of clinical studies by new proto-type Digital Subtraction Angiography (DSA) System with the Flat Panel Detector (FPD). That system has two types of detector, FPD and I.I.-CCD camera, and we can compare with image quality in clinical. We measured and discussed about the physical characteristic data of both detectors. Up to physical(More)
We study the asymptotic behavior of solutions to a semilinear elliptic equation associated with the critical nonlinear growth in two dimensions. { −∆u = λueu , u > 0 in Ω, u = 0 on ∂Ω, (1.1) where Ω is a unit disk in R2 and λ denotes a positive parameter. We show that for a radially symmetric solution of (1.1) satisfies ∫ D |∇u| dx → 4π, λ ↘ 0. Moreover, by(More)
For physicians who monitor images during interventional radiology (VR), we have built and been using a system that employs a liquid crystal display (LCD) instead of the conventional cathode ray tube (CRT). The system incorporates a ceiling-suspension-type monitor (three-display monitor) with an LCD on each of the three displays for the head and abdominal(More)