This paper proposes a column-wise two-step SingleSlope (SS) ADC, which improves the sampling rate while maintaining the architecture of the conventional SS-ADC for high-speed CIS. To remove the problem of missing code in multi-stage structures, occurring on every boundary between steps of the coarse ADC, the range of the fine ADC is doubled to cover the boundary. The sampling rate of the ADC is...

PURPOSE To determine how the ADC value of parotid glands is influenced by the choice of b-values. MATERIALS AND METHODS In eight healthy volunteers, diffusion-weighted echo-planar imaging (DW-EPI) was performed on a 1.5 T system, with b-values (in seconds/mm2) of 0, 50, 100, 150, 200, 250, 300, 500, 750, and 1000. ADC values were calculated by two alternative methods (exponential vs. logarith...

BACKGROUND AND PURPOSE We sought to describe the frequency of normalization of apparent diffusion coefficient (ADC) values that are decreased in hyperacute stroke and to identify characteristics of tissue demonstrating normalization. METHODS Sixty-eight acute ischemic stroke patients underwent MRI examination (including diffusion/perfusion imaging and MR angiography) within 6 hours (mean, 2.8...

OBJECTIVE We elected to analyze the correlation between the pre-treatment apparent diffusion coefficient (ADC) and the clinical, histological, and immunohistochemical status of rectal cancers. MATERIALS AND METHODS Forty-nine rectal cancer patients who received surgical resection without neoadjuvant therapy were selected that underwent primary MRI and diffusion-weighted imaging (DWI). Tumor A...

A total of two postpartum women with no noteworthy medical history presented with persistent headache. Brain magnetic resonance imaging (MRI) of both revealed extensive cerebral venous thrombosis, concurrently with abnormal signals of the splenium of the corpus callosum (SCC): The splenium appeared hyperintense on T2-weighted sequences, fluid-attenuated inversion recovery (FLAIR), and diffusion...

Purpose: The purpose of this study is to compare the diagnostic accuracy of prostate apparent diffusion coefficient (ADC) versus normalized prostate ADC using the normal peripheral zone as the reference site for the differentiation of prostate cancer and prostatitis in the peripheral zone. Methods: Fifty-two patients, 32 with prostate cancer and 19 with prostatitis, were assessed with single-sh...

Introduction: Glioma is the most common primary malignancy of cerebral neoplasms in adults, which in spite of therapeutic significant efforts, has a very poor prognosis. The current standard treatment of these patients generally includes surgery and radiotherapy or concurrent chemoradiotherapy with 6 courses of adjuvant use of temozolomide tabs. During these years, the nervous...

E. Staroswiecki, K. L. Granlund, M. T. Alley, G. E. Gold, and B. A. Hargreaves Radiology, Stanford University, Stanford, California, United States, Electrical Engineering, Stanford University, Stanford, California, United States INTRODUCTION: The visualization of articular cartilage is a challenging problem that requires advanced MRI techniques. In order to follow the changes to tissue in early...

PURPOSE To determine if apparent diffusion coefficient (ADC) histogram analysis can stratify progression-free survival in patients with recurrent glioblastoma multiforme (GBM) prior to bevacizumab treatment. MATERIALS AND METHODS The study was approved by the institutional review board and was HIPAA compliant; informed consent was obtained. Bevacizumab-treated and control patients (41 per coh...