The concept of magnetic susceptibility is central to many current research and development
activities in magnetic resonance imaging (MRI); for example, the development of MR‐guided …

We have developed radiofrequency coils for high-field head and whole-body imaging which
achieve near optimal rf field (Br) homogeneity and signal-to-noise ratio (SNR). The design, …

Issues associated with the exposure of patients to strong, static magnetic fields during magnetic
resonance imaging (MRI) are reviewed and discussed. The history of human exposure …

PURPOSE: To develop a superconducting magnetic resonance (MR) imager that provides
direct access to the patient and permits interactive MR-guided interventional procedures. …

Magnetic resonance guided focused ultrasound surgery provides a minimally invasive
controlled method for selectively destroying deep-lying tissue. A thermal analysis of focused …

Recent advances in high-field MRI have dramatically improved the visualization of human
brain anatomy in vivo. Most notably, in cortical gray matter, strong contrast variations have …

The brain has an unusually high concentration of iron, which is distributed in an unusual
pattern unlike that in any other organ. The physiological role of this iron and the reasons for this …

Clinical magnetic resonance imaging (MRI) was introduced in the early 1980s and has become
a widely accepted and heavily utilized medical technology. This technique requires that …

Deep lying soft tissue tumors may be treated by a nonincisional surgical procedure executed
inside an MR imaging system using a thermal effect delivered by a focused ultrasound …

PURPOSE: To measure the performance characteristics of a focused ultrasound (US) system
for magnetic resonance (MR) imaging-guided tumor ablation. MATERIALS AND METHODS…