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modular CP Array concept


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01:14 Oct 30, 2002
English to French translations [PRO]
Medical / medical equipment - MRI system from Siemens
English term or phrase: modular CP Array concept
The Integrated Panoramic Array (IPA) system is a modular CP Array concept that greatly accelerates coil set-up and may significantly enhance throughput and productivity.

I can\'t find what CP corresponds to. Anybody knows?
Local time: 09:10

Summary of answers provided
2concept modulaire (d'ensemble (d'anneaux/d'enroulements)) CPredflag



3 hrs   confidence: Answerer confidence 2/5Answerer confidence 2/5
concept modulaire (d'ensemble (d'anneaux/d'enroulements)) CP

Ma traduction de l'expression est approximative, et les mots entre parenthèses pourraient sans doute être omis.
CP veut probablement dire "Carr-Purcell" du nom des deux gars qui ont mis au point le type de signal de radiofréquence (RF) que l'on envoit dans les "coils" (anneaux, enroulements, sorte d'électrodes qui n'en sont pas, car ce n'est pas un courant qui passe, mais un champ magnétique) du système MRI.

Voici quelques définitions que j'ai pu trouver après une difficile recherche :-)

Également un lien sur les fameux "coils" offerts par Siemens.

Seb "redflag"

Array coil. RF coil composed of multiple separate elements that can be
used individually (switchable coil) or used simultaneously. When used
simultaneously, the elements can either be: 1) electrically coupled to each
other (“coupled array coils”), through common transmission lines or mutual
inductance, or 2) electrically isolated from each other (“isolated array coils”),
with separate transmission lines and receivers and minimum effective
mutual inductance, and with the signals from each transmission line
processed independently or at different frequencies.

Array processor. Optional component of the computer system specially
designed to speed up numerical calculations like those needed in MR

Coil. Single or multiple loops of wire (or other electrical conductor, such
as tubing, etc.) designed either to produce a magnetic field from current
flowing through the wire, or to detect a changing magnetic field by voltage
induced in the wire.

Carr-Purcell (CP) sequence. Sequence of a 90 ° RF pulse followed by
repeated 180° RF pulses to produce a train of spin echoes; is useful for
measuring T2.

Radiofrequency (RF). Wave frequency intermediate between auditory
and infrared. The RF used in NMR studies is commonly in the megahertz
(MHz) range. The RF used in ESR studies is commonly in the gigahertz
(GHz) range. The principal effect of RF magnetic fields on the body is power
deposition in the form of heating, mainly at the surface; this is a principal
area of concern for safety limits.

Magnetic resonance imaging (MRI). Use of magnetic resonance to create
images of objects such as the body. Currently, this primarily involves
imaging the distribution of mobile hydrogen nuclei (protons) in the body.
The image brightness depends jointly on the spin density (N(H)) and the
relaxation times (T1 and T2), with their relative importance depending on
the particular imaging technique and choice of interpulse times. Image
brightness is also affected by any motion such as blood flow, respiration,

    Reference: http://www.med.siemens.com/medroot/en/prod/oem/downloads/RF_...
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