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Main System Components

A typical MR system consists of three components or sub-systems:

  • a magnet with a main magnetic field,
  • a gradient system, and
  • the radio-frequency (RF) system

Siemens - MRI - MAGNETOM World - Main System Components - Magnet Homogeneity and Shimming

The magnet is the most prominent – and most expensive – part of an MRI system. It creates the main magnetic field, B0, which serves as the basis for all magnetic resonance imaging.
There are several features and specifications of the magnet design that have an influence on different criteria: Image quality, patient comfort, and economic aspects. In this article, the aspects of magnet homogeneity, shimming capabilities, and their respective relevance for MRI will be addressed.


Siemens - MRI - MAGNETOM World - Main System Components - Gradient Performance and Gradient Amplifier Power

When talking about gradient performance, most will only state the maximum amplitude (strength) of the gradient system and the maximum slew rate (speed). But actually, there is much more to a gradient system. There are numerous design criteria for a gradient coil to be considered. In addition, there is the gradient power amplifier (GPA) that ‘drives’ the gradient coil. The performance of the gradient system and the power of the gradient amplifier are closely related.
This paper discusses the key characteristics of the gradient coil as well as the gradient amplifier, with their inter-dependencies and their clinical benefits.


Siemens - MRI - MAGNETOM World - Main System Components - Pioneers of Connectome Gradients

Read about the development of Connectome gradients and the work of the five institutions in the US and in Europe currently using MAGNETOM Connectom scanners by Siemens Healthcare MR.

Date: 10-05-2017

Case Studies

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