MRI Fonts

Fonts, like all of us, have a particular character. Pun intended. Their shapes can suggest a tone of voice, encourage a level of formality or urgency, or trigger associations with other products or brands. Some allow for fast reading on screens, or easier prolonged reading on paper. A brief foray into internet resources regarding font design will take you into a world of nuance and technical detail, for which you might need to learn a host of interesting terms: glyphs; ligatures; kerning; hinting. Fonts can be fascinating and beautiful, and designing them is a creative and highly technical skill. Nevertheless, we can appreciate them in terms of their characteristics and utility, their history and heritage, and their intent in communicating brand philosophies, by comparing different choices made by MRI manufacturers. Let’s look at some examples, using the fonts seen in printed materials by Philips, Siemens, and GE. Continue Reading »

Metal Artefact Reduction

Magnetic resonance imaging relies on a homogenous magnetic field. When we introduce magnetic field variations across the patient with magnetic field gradients, the magnetic field strength relates to position, and is used to encode the MR signal.

But not in the presence of metal.
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Fazed by Phase

The word “phase” has a few uses in MR physics.

Let’s review them.
It can get confusing.

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Use MRI for: Imagining God?

A recent fMRI neuroimaging study from the University of Chicago asks a fascinating question:

“Religion appears to serve as a moral compass for the vast majority of people around the world. It informs whether same-sex marriage is love or sin, whether war is an act of security or of terror, and whether abortion rights represent personal liberty or permission to murder. Many religions are centered on a god (or gods) that has beliefs and intentions, with adherents encouraged to follow “God’s will” on everything from martyrdom to career planning to voting. Within these religious systems, how do people know what their god wills?”

Using fMRI, they saw that the same areas of the brain were used to reason about one’s own beliefs and God’s beliefs, but different regions of the brain were used when reasoning about another person’s beliefs. In particular, reasoning about God’s beliefs activated areas associated with self-referential thinking more so than did reasoning about another person’s beliefs.

In other words, if you believe in God, you’re probably subconsiously endowing God with your beliefs (at least on controversial issues*), and not the other way around.

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Use MRI for: Politics

Neuromarketing is the application of neuroimaging methods to product marketing, to more effectively “match products with people”. Companies can incorporate use of fMRI in the design process of a product, as well as in assessing the effectiveness of an advertising campaign.

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