Computed tomography findings of spontaneous perforation of pyometra.

We report herein a case of spontaneous perforation of pyometra leading to diffuse peritonitis. This pathological condition is rare, and preoperative diagnosis is difficult. We were able to make the correct diagnosis preoperatively using contrast-enhanced abdominopelvic computed tomography.

Gallbladder hernia into the foramen of Winslow: CT findings.

We present a case of gallbladder hernia into the foramen of Winslow. During the diagnosis of hernia, ultrasonography, computed tomography and intravenous computed tomography, cholangiography of the abdomen were performed. Ultrasonography detected gallstone, but did not provide sufficient information to diagnose gallbladder hernia.

Tumor-liver contrast and subjective tumor conspicuity of respiratory-triggered T2-weighted fast spin-echo sequence compared with T2*-weighted gradient recalled-echo sequence for ferucarbotran-enhanced magnetic resonance imaging of hepatic malignant tumors.

Purpose: To compare respiratory-triggered T2-weighted fast spin-echo (RTT2W-FSE) and gradient T2*-weighted recalled-echo (T2*W-GRE) images for visualization of malignant hepatic tumors using ferucarbotran-enhanced magnetic resonance (MR) imaging.

Materials And Methods: Ferucarbotran-enhanced RTT2W-FSE and breath-hold long-TE 2D-fast spoiled gradient recalled acquisition in the steady state (FSPGR) images as T2*W-GRE were used to evaluate 128 malignant hepatic tumors (77 metastases, 37 hepatocellular carcinomas, 14 other) in 62 patients. Tumor-to-liver contrast (TLC) was quantitatively compared using the paired Student's t-test, and the score of lesion conspicuity was qualitatively compared using Wilcoxon's signed rank test.

REG Ialpha is a reliable marker of chemoradiosensitivity in squamous cell esophageal cancer patients.

Background: A reliable marker of chemoradiosensitivity that would enable appropriate and individualized treatment of thoracic squamous cell esophageal cancer has long been sought. We investigated whether regenerating gene (REG) Ialpha is such a marker.

Methods: We assessed expression of REG Ialpha in untreated endoscopic biopsy specimens and examined the correlation between REG Ialpha expression and the clinical responses to definitive chemoradiotherapy and prognosis.

Diffusion changes in a tumor and peritumoral tissue after stereotactic irradiation for brain tumors: possible prediction of treatment response.

Objective: Changes in apparent diffusion coefficient (ADC) in a tumor and peritumoral tissue after stereotactic irradiation (STI) were evaluated, and then the therapeutic efficacy of ADC measurement was assessed.

Methods: In 20 tumors, diffusion-weighted imaging within 1 week before and 2-4 weeks after STI was performed. The normalized ADC (nADC) was measured.

Thallium-201 SPECT in the evaluation of early effects on brain tumors treated with stereotactic irradiation.

Purpose: To determine whether thallium-201 SPECT can predict response to stereotactic irradiation (STI) earlier than magnetic resonance imaging (MRI), the change in tumor size measured by MRI was compared with the change in tumor activity measured by Tl-201 SPECT before and after STI.

Materials And Methods: Twenty-one tumors in 16 patients with intracranial tumors were treated by STI. Tl-201 SPECT was performed within 1 week before the beginning of STI and within 1 week after the end of STI in all patients.

Multi-shot echo-planar Flair imaging of brain tumors: comparison of spin-echo T1-weighted, fast spin-echo T2-weighted, and fast spin-echo Flair imaging.

Multi-shot echo-planar fluid-attenuated inversion-recovery (EPI-Flair) was compared with spin-echo T1-weighted (SE-T1W), fast SE T2-weighted (FSE-T2W), and fast Flair (F-Flair) in imaging brain tumors. In 32 patients with various different brain tumors, three reviewers independently evaluated image quality. Two reviewers evaluated the image quality of precontrast EPI-Flair to be significantly better than that of precontrast SE-T1W.