In the past decade, magnetic resonance imaging (MRI) research has been focused on the acquisition of physiological and biochemical information noninvasively. Probably the most notable accomplishment in this general effort has been the introduction of the MR approaches to map brain function. This capability, often referred to as functional magnetic resonance imaging, or fMRI, is based on the sen...

This article is based on an introductory lecture given for the past many years during the "MR Physics and Techniques for Clinicians" course at the Annual Meeting of the ISMRM. This introduction is not intended to be a comprehensive overview of the field, as the subject of magnetic resonance imaging (MRI) physics is large and complex. Rather, it is intended to lay a conceptual foundation by whic...

BACKGROUND The study was undertaken to determine whether a single slice magnetic resonance (MR) myelogram sequence improves the interpretation and diagnostic yield for magnetic resonance imaging (MRI) of the spine. METHODS A total of 100 cases with positive findings were retrospectively reviewed. All patients had initial imaging with sagittal T1-weighted (T1-W) and T2-weighted (T2-W) scans, f...

A careful comparison between the Principal Component Analysis (PCA) and the Hankel Total Least Squares (HTLS) based methods for estimating the resonances in sets of MR spectra is presented. After a description of the methods and their relationships, we compare their performance on simulated data sets of Magnetic Resonance Spectroscopy (MRS) signals and discuss their advantages and limitations. ...

Medical image registration plays an important role in clinical diagnosis and therapy planning. This paper proposes an automatic method to register computed tomography (CT) and magnetic resonance (MR) brain images by using first principal directions of feature images. In this method, principal component analysis (PCA) neural network is used to calculate the first principal directions from featur...

Hybrid imaging devices combining Positron-Emission-Tomography (PET) with Magnetic-Resonance-Imaging (MRI) have been shown to possess a great potential for small animal studies. Recently PET/MR systems have also been built for human applications. Here we present an evaluation of the first hybrid PET/MR device, which has the capabilities to perform simultaneous PET/MR acquisitions of the human br...

Mixed acinar-endocrine carcinoma (MAEC) of the pancreas is extremely uncommon. We report here a rare case of MAEC of the pancreas presenting as watery diarrhea. This is the first report in the English-language literature that describes the imaging findings of MAEC of the pancreas, including computed tomography (CT), magnetic resonance (MR) imaging, and MR cholangiopancreatography features.

CAIPIRINHA-DIXON-TWIST-VIBE-Based Dynamic Contrast-Enhanced Breast Imaging For High Temporal and Spatial Resolution: Scanning Time Optimization Wen Hao, Bin Zhao, Hui Liu, Marcel D. Nickel, Elisabeth Weiland, and Guangbin Wang Magnetic resonance imaging, Shandong medical imaging research institution, Shandong University, Jinan, ShanDong, China, MR Collaboration NE Asia, Siemens Healthcare, Shan...