INTRODUCTION: Quantitative measurements of Magnetic Resonance tissue parameters is a valuable tool for tissue characterisation and functional imaging. For instance, myocardial T2 quantification is used to detect early rejection of heart transplant [1]. These T2 values are usually estimated by performing several black blood FSE sequences with different Echo Times (TE), thus requiring multiple br...

PURPOSE The aim of this study was to compare 3D fast imaging with steady state acquisition (3D FIESTA) to fast spin echo T2-weighted (FSE T2W) MRI sequences in the imaging of cisternal parts of cranial nerves V-XII. MATERIALS AND METHODS We retrospectively evaluated the temporal MRI sequences of 50 patients (F:M ratio, 27:23; mean age, 44.5 +/- 15.9 years) who were admitted to our hospital wi...

PURPOSE To evaluate two magnetic resonance imaging (MRI) techniques, slice encoding for metal artifact correction (SEMAC) and multiacquisition variable-resonance image combination (MAVRIC), for their ability to correct for artifacts in postoperative knees with metal. MATERIALS AND METHODS A total of 25 knees were imaged in this study. Fourteen total knee replacements (TKRs) in volunteers were...

PURPOSE To determine the proportion of benign and malignant testicular lesions among patients with nonpalpable incidental testicular masses. METHODS AND MATERIALS Ten patients with nonpalpable incidental testicular masses underwent surgical exploration. Surgery was performed via an inguinal approach with temporary cord occlusion and frozen section examination (FSE) of the lesions. Benign find...

BACKGROUND MRI is not able to directly measure the concentration of contrast agent. It is measured indirectly from the signal intensity (SI). It is very important to know how much contrast agent should be injected to receive a maximum SI in the region of interest (ROI). OBJECTIVES The aim of this study was to investigate the maximum relationship between contrast concentration and signal inten...

BACKGROUND AND PURPOSE Neurologic involvement in Behçet disease, also known as NBD, is one of the most devastating manifestations of the disease. The precise pathologic mechanism of parenchymal NBD lesions has not been established. We evaluated lesion characteristics and probable venous hemorrhage in parenchymal NBD by using SWI, and we compared the imaging results with conventional MR imaging ...

OBJECTIVE This study aimed to compare the accuracy of rectal cancer restaging after neoadjuvant therapy with 3D CUBE sequence with 2D T2-weighted fast spin-echo (FSE) sequence. METHODS This retrospective study comprised 72 patients with rectal cancer confirmed by colonoscopy and biopsy. After neoadjuvant therapy, all patients underwent pelvic magnetic resonance imaging (MRI) examination at 1....

This dissertation is concerned with the blind, cold-start equalization of a closed-eye, fractionally-spaced channel, so that the error rate is suuciently reduced for transfer to a decision directed mode. First, a simulated comparison study of recently proposed second-order-statistics (SOS) algorithms and the constant modulus algorithm (CMA) shows a severe lack of robustness for the SOS algorith...