1.5 Tesla Magnet
The magnet system of Achieva 1.5T offers high intrinsic homogeneity typically higher than 1.5 ppm- enabling superb fat suppression via techniques such as SPIR and SPAIR. In addition Achieva 1.5T system’s high homogeneity allows raid per- patient dynamic shimming for excellent image quality over the entire 53cm (20.9 in) field of view. The ability to employ large FOV’s facilities run-off studies Willis down to the aortic arch. The Achieva 1.5T system’s excellent homogeneity also affords easy imaging of off-center anatomy. Key Features Include
- Typical homogeneity of 1.5 ppm VMRS over a 50 cm DSV
- Superconducting screening coils reduce magnetic field susceptibility caused by moving ferrous objects.
- Lightweight 2900 kg (6393 lbs) design and compact fringe field footprint of 3.8m x 7.9ft) facilitate easy siting.
- Typical helium consumption ( as low as 0.03 1/hr) extends time between cryogen refills.
Aperture
- Bore Diameter: 60cm (23.6 in)
- Straight bore length: 60cm
- Bore Flare 110 cm (43 in) on both the front and rear of the magnet, enabling equal access to the patient. Additionally start/stop controls on both ends of the magnet increase operating flexibility.
- Patient support enables patients weighing up to 250 kg (550) to be comfortably positioned.
- Patient table height can be lowered to 52 cm ( 20.4) providing easy access for compromised positioned.
- Detachable tabletop can be combined with optional trolley for efficient patient management and rapid evacuation.
- Horizontal travel of 215 cm (7.05 ft) (1.0 mm) (0.04inch) accuracy
Nova HP Gradient System:
Philips offers the Nova High Performance (HP) gradient system, which enables users ideal performance for today’s advanced clinical applications. In combination with FreeWave, Nova HP delivers exceptional sequence performance in terms of minimum TE-TR for angio, cardiac, and EPI applications. Performance is achieved over the entire 53 cm FOV with an excellent and acoustic noise. Key Features Include:
- Maximum FOV is 53cm
- Peak Amplitude 33mT/m, slew rate 180 mT/m/ms. All specifications are on axis (x,y, and z)
- Lineavity of 1.4% over the entire 53cm FOV with distortion correction.
- State of the art water cooled gradient amplifier technology combined with a non – resonant coil design allows flexible generations of any type of gradient acoustic noise by up to 30 dB ( an 86% reduction in patient- perceived acoustic noise)
FreeWave Digital RF System:
Achieva 1.5T is powered by Philips FreeWave, the first entirely direct digital broadband spectrometer. With a scaleable architecture, oustanding SNR performance and unique 3MHz bandwidth per RF channel, FreeWave is prepared to preform emerging clincial techniques that require higher data rates, bandwidth, and resoultion, including Philip’s latest unique methods 4D-TRAK, k-t BLAST, 2D imaging and whole body DWIBS (contained in optional packages)
RF Receive
- 16 RF Channels Standard
- Direct Digital Sampling at 80 MHz per channel with no analog modulation
- 3MHz Bandwidth per channel
- Simultaneous connection or multiple coils( total of 32 quadrature coil elements)
- Modular expandable architecture
RF Transmit:
- 18kw Solid- state RF power amplifier that affords the energy necessary to image even the large patient.
- Real time control
- Sub- millisecond TR’s and ultra-short TE’s provide image quality and reduce examinations times.
- Real time imaging control for clinical motion correction, including Snapshot and optional navigator correction required for free-breathing cardiac techniques and high resolution diffusion with profile updates with 1 ms.
- Real time control of RF transmission, gradient switching, sate acquisition and triggering.
