Discovery MR750w and SIGNA™ Architect T 3.0T System Service Methods
5690002-2EN Revision 4
Object ID: 00000018WIA30159F20GYZ
Topic ID: id_13106469 Version: 1.67
Date: Aug 6, 2021 3:22:46 PM

ICE theory

The Integrated Control Engine (ICE) generates the signals that direct the Magnetic Resonance (MR) imaging system. ICE includes the ICE High Level Assembly (HLA) and ICE Mother Board (IMB).

ICE HLA: The ICE HLA consists of the IMB (and IDB, as applicable) that generates the timed control signals necessary to control the MR imaging system under the direction of the imaging sequence (pulse sequence). These control signals drive the gradient output and RF output, as well as gate the RF receive window.
IMB: The IMB contains all of the base System Sequence and Control (SSC) functions. The IMB can operate with or without the IDB in a system requiring 32 (or fewer) channels.
IDB: The IDB allows expansion of the imaging system up to 160 channels of receive data.

See ICE internal board for more information about the IDB and the IMB.

The following table explains ICE configurations for the applicable Discovery systems.

Table 1. Scan Sequence Controller (SSC) type
Marketing name	Magnet size	Table type	Software	Receive chain		SSC type
				Type	Channels	ICE	IDB	HLA part number	CAM	HLA part number
Discovery MR 750w - systems with XG2 Gradients	3.0T	GEM	DV25.1 or earlier	RRx	32	No	No	N/A	Yes	5181495–8 or 5181495–61
			DV26.0 or later	RRx	32	Yes	No	6200100-4	No	N/A
Note: Software upgrade from DV25.1 and earlier to DV26 do not require a hardware change. In these cases, these systems may still have CAM SSC.

Table 2. Mapping between HART log entries and ICE HLA part numbers
ICE HLA	HART log entry
6200100-4: Support ≤32ch ICE Assembly: PSC, XGP, No REPs	6250478