(CLIO) This new class of contrast agents under development consists of MION reacted with crosslinking agents (e.g. epichlorohydrin used in the manufacture of dextran particles) that connect the partly free-floating dextran chain around the iron core.

Quick Overview

Crosstalk is an artifact introduced into images by interference between adjacent slices of a scan, caused by a slice profile that is not ideal due to the constraints of the measurement technology. If the slice distances are too small, there is cross talk between the slices, which can affect T1 contrast.

This artifact can be eliminated by limiting the minimum spacing (for the most sequences a minimum gap 10% and for IR sequences 20%) between the slices. Crosstalk can also be reduced by selection of interleaved slices (so a slice gap will not be necessary), but interleaved data acquisition can produce large mean intensity differences between adjacent slices.

A cooling agent, typically liquid helium or liquid nitrogen used to reduce the temperature of the magnet windings in a superconducting magnet. All cryogenic liquids are gases at normal temperatures and pressures. Different cryogens become liquids under different conditions of temperature and pressure, but all have two properties in common: they are extremely cold, and small amounts of liquid can expand into very large volumes of gas. The boiling points of cryogens are commonly below -150°C(- 238°F).

See also Helium.

Sometimes called helium meter or nitrogen meter is used to monitor the cryogen level of liquid He or N2 used to cool the magnet.

See Superconducting Magnet.