Publications by authors named "Hajime Okazaki"

Article Synopsis
  • A study examined the clinical outcomes of patients with blunt splenic injuries who received transarterial embolization (TAE), focusing on their hemodynamic status (stable vs unstable).
  • The research analyzed data from 38 adult patients treated at two centers from 2011 to 2022, comparing the survival rates, rebleeding incidents, and need for splenectomy between hemodynamically stable (HDS) and unstable (HDU) groups.
  • Results showed a high survival discharge rate for both groups (88.2% in HDU and 100% in HDS), but highlighted the need for more studies to assess the effectiveness of TAE compared to traditional surgery for HDU patients.
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Rationale And Objectives: This study investigated detecting bone marrow edema (BME) in patients with vertebral compression fractures. We compared dual-energy material density analysis images to magnetic resonance imaging (MRI), which is considered the gold standard.

Materials And Methods: In this retrospective study, 260 vertebral bodies from 30 patients (11 males, 19 females, mean age of 81) were assessed by MRI and dual-energy material density analysis.

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Objectives: In this study, we aimed to analyze the relationship between the diagnostic ability of fused single photon emission computed tomography/ computed tomography (SPECT/CT) images in localization of parathyroid lesions and the size of adenomas or hyperplastic glands.

Methods: Five patients with primary hyperparathyroidism (PHPT) and 4 patients with secondary hyperparathyroidism (SHPT) were imaged 15 and 120 minutes after the intravenous injection of technetium99m-methoxyisobutylisonitrile ((99m)Tc-MIBI). All patients underwent surgery and 5 parathyroid adenomas and 10 hyperplastic glands were detected.

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A 79-year-old woman was found to have an abnormal shadow on chest radiography. Computed tomography demonstrated a pleural mass. The F-18 fluorodeoxyglucose positron emission tomography (FDG PET) was performed to determine whether the pleural mass was benign or malignant.

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Purpose: The aim of this study was to show the results of computed tomography (CT)-based dosimetry of intracavitary brachytherapy for cervical cancer.

Materials And Methods: A total of 20 patients with cervical cancer underwent intracavitary brachytherapy with external beam radiation therapy. The prescribed dose of brachytherapy was 6 Gy per fraction to point A.

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Background: In hepatitis B virus (HBV) surface antigen (HBsAg) (+) renal allograft recipients, the mortality associated with liver disease reaches 37-78%. An antiviral agent, lamivudine, has recently been reported to be safe and effective for preventing hepatic damage in these patients, although either resurgence of HBV-DNA levels after discontinuation or emerging resistant HBV mutants caused by long-term administration are still unsettled.

Methods: Between July 1976 and December 2003, 555 renal transplantations were performed in our centre.

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Purpose: To evaluate the additive value of breath-hold, multisection fluid-attenuated inversion-recovery (FLAIR) magnetic resonance imaging (MRI) using half-Fourier acquisition single-shot turbo-spin-echo (HASTE) sequence as supplements to moderately and heavily T2-weighted fast-spin-echo (FSE) sequences in differentiating hepatic cyst from hemangioma.

Materials And Methods: A total of 183 lesions (127 hepatic cysts, 56 hepatic hemangiomas) in 117 patients were evaluated in this study. Three radiologists independently reviewed FLAIR MR images using a HASTE sequence and T2-weighted FSE MR images.

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Background: The rate of metabolism in the intestine of oral administered FK506 decreases as FK506 passes on to the lower intestine. In transplant recipients with diarrhea given oral FK506, the main areas for absorption of FK506 shift to the lower intestine, where the ability to metabolize FK506 is weaker. Therefore it is considered likely that when FK506 is administered to recipients with diarrhea, the blood concentration of FK506 will be higher.

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Objective: To analyze the urine of renal recipients for the presence of donor DNA in an attempt to establish an alternative diagnostic means of acute rejection.

Methods: Sixty-four renal transplant recipients were examined. Thirty-seven were normal after transplantation, while 22 others developed acute rejection, based on serum creatinine levels and/or needle biopsy findings of the graft.

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Background: Deoxyspergualin (DSG) prophylaxis has improved long-term graft survival in living-related renal-transplant recipients transfused with donor-specific blood (DST). We examined the influence of acute rejection (AR) on graft survival in these patients.

Methods: The study groups consisted of either historic control recipients without DSG (group A, n=64, 1985-1989) and recipients with DSG as the initial immunosuppressive agent (group B, n=76, 1989-1995).

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In renal transplantation we usually diagnose an acute rejection by based on the results of a needle biopsy; however, this takes time and findings in some cases are not definite. We analysed the urine of renal recipients for the presence of donor DNA in an attempt to establish a diagnostic means of acute rejection. Sixty-four renal transplant recipients were examined.

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