The Achieva 1.5T – Diamond Select Advance scanner comprises:

• Patient environment
• High Performance gradient system
• FreeWave RF system
• 1.5T magnet

Patient environment

The Achieva 1.5T is specifically designed to enhance patient comfort and throughput by virtue of a spacious patient aperture that effectively eliminates claustrophobic effects and affords excellent patient access, provided by a combination of the shortest straight bore length in the industry and widely flaring bore. Achieva system’s ultra-compact, patient-friendly environment also affords un-compromised large and offset FOV imaging. The High SNR body coil permits large FOV imaging without surface coils, reducing set-up time and facilitating easy run-off studies.

Aperture:

• Bore diameter: 60 cm (23.6 in.)
• Straight bore length: 60 cm
• 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:

• Patient support enables patients weighing up to 250 kg (550 lbs) to be comfortably positioned.
• Patient table height can be lowered to 52 cm (20.4 in.), providing easy access for compromised or non-ambulatory patients.
• Detachable tabletop can be combined with optional trolley for efficient patient management and rapid evacuation.
• Horizontal travel of 215 cm (7.05 ft) with (1.0 mm (0.04 inch) accuracy
• Table speeds of 20 mm/s to 180 mm/s enable fast, easy patient positioning and rapid multi-station examinations.

Patient Accessories:

• Adjustable fresh air supply and variable lighting
• In-bore microphone and ceiling-mounted loudspeakers support two-way patient-operator communication and music.
• Hand-held technologist call button.
• Soft mattress with a headrest, knee support and positioning wedges.
• Patient headset with built-in two-way communication reduces acoustic noise by up to 25 dB.
• Wireless Physiology consisting of wireless Basic Triggering Unit (wBTU) and Respiratory module hardware
• Physiological synchronization for sequence triggering and gating is possible with
• Wireless VCG
• Wireless Respiratory
• Wireless PPU (requires optional PPU Sensors)

Physiological signals can be observed on the operator’s console monitor

Optional exam room displays include the Physiology Monitor (on the gantry) and the Interactive Exam Room Display.

FreeWave digital RF system

The Achieva 1.5T is powered by Philips’ FreeWave platform, the first entirely direct digital broadband spectrometer. With a scalable architecture, outstanding SNR performance and unique 3MHz bandwidth per RF channel, FreeWave is prepared to perform advanced clinical techniques today, and expand for tomorrow.

RF Receive:

• 8 RF channels standard.
• Direct Digital Sampling at 80 MHz per channel with no analog demodulation.
• 3MHz Receiver Bandwidth per channel.
• Simultaneous connection of multiple coils (total of 32 quadrature coil elements).
• Modular expandable architecture

RF Transmit:

• 18 kW Solid-state RF power amplifier that affords the energy necessary to image even the large patient.

Real Time Control with FreeWave RF Platform:

• Sub-millisecond TR’s and ultra-short TE’s provide improved image quality and reduced examination times.
• Real-time imaging control for clinical motion correction, including SnapShot and optional navigator-corrections required for free-breathing cardiac techniques and high-resolution diffusion (i.e., PhaseTrak) with profile updates within 1 ms.
• Real-time control of RF transmission, gradient switching, data acquisition and triggering.

Standard RF coils:

• Quadrature Transmit/Receive Body coil

Standard Accessories:

• Comprehensive set of Patient Fixation straps

MR WorkSpace

The MR WorkSpace is a unique configurable solution for MR workflow targeted at resolving the management of the increasing volume of MR patient data. The MR WorkSpace includes the MR operator’s console.

The MR WorkSpace can incorporate optional, advanced MR processing capabilities, directly sending the results to PACS. The result is a seamless working environment that can conform to the needs of any MR department – boosting its efficiency and productivity while avoiding the expense of dedicated workstations.

• Neuro Pro
• MSK Pro
• Body Pro
• Breast Pro
• Cardiac Pro
• MRA Pro

Scantools Pro

Scantools Pro provides the following generic workflow features for all clinical anatomies:
• ExamCards, for automated scanning and processing of patient studies. Exam Cards can be edited during scanning. The Split Exam option provides you the ability to separate imaging series acquired during a single scan session into multiple scan instances. This allows for correct association of imaging series to ordered/scheduled examinations to facilitate proper reporting, data handling and billing activities.
• SENSE parallel imaging methods for fast scan times, high resolution or to reduce susceptibility artifacts.
• CLEAR for signal uniformity correction based on coil-sensitivity and on patient loading.
• PicturePlus to improve appearance of images through edge enhancement and smoothing. Provides full control over all enhancement parameters, which can be applied automatically post-acquisition or as a post-processing option.
• High-resolution acquisitions and reconstruction (1024 matrix)

In addition, ScanTools Pro contains fast, high resolution imaging methods for the assessment of morphology of all anatomical areas including brain and spine, MSK, body and breast, cardiac, and various blood vessels with or without contrast agents. Specific features per clinical area are listed below.
Neuro Pro
• Sequences include SE, FFE and EPI based methods, with fat suppression methods including STIR, SPIR, ProSet and SPAIR.
• FLAIR for CSF suppression.
• Snapshot imaging, intended for uncooperative patients, eliminates the effects of patient and physiological motion through the combination of rapid TSE sequences and SENSE. Individual Snapshot images can be acquired in any orientation in approximately 250ms to 300ms. Asymmetric TSE makes Snapshot compatible with T1-, T2- and diffusion-weighted imaging.
• Single, Dual and Triple IR sequences for evaluation of gray and white matter differentiation.
• 2D TSE with Flip Angle Sweep technology for SAR and Magnetization Transfer reduction, improving gray/white matter contrast in both T2 and FLAIR acquisitions.
• 3D based anatomical sequences including:
• VISTA, isotropic 3D TSE for volumetric acquisitions with reconstruction in any plane.
• 3D T1-TFE sequences for volumetric acquisition and reconstruction of the original dataset in any orientation.
• 3D TFE for isotropic coverage of the entire head in short scantimes using SENSE. A single data set can be reformatted into alternate planes both pre- and post-contrast, eliminating the need for additional scans.
• DRIVE for T2-weighted 2D and 3D TSE acquisitions enabling short TRs while maintaining contrast-to-noise and SNR. Used to improve fluid visualization (IAC), for short scan times and to increase resolution.
• Balanced FFE/TFE for high-resolution high contrast (IAC and Spine applications).
• ProSet water and fat excitation for spinal nerve root imaging. Combines the characteristics of the high-resolution volume acquisitions with ProSet water or fat only selection.
• Multiple radial projection myelography both with 2D and 3D sequences.
• MultiVane to correct motion for multi-shot TSE examinations with radial encoding. MultiVane delivers high resolution diagnostic images even in case of patient motion for T2, IR-real & FLAIR TSE imaging as well as gradient-echo examinations.
• Dynamic multi-slice T2*-weighted sequences based on single- or multi-shot FFE-EPI methods for perfusion and fMRI sequences.
• Single-shot EPI diffusion-weighted imaging (DWI) with three diffusion directions and up to 16 b-values, robust against motion and generating isotropic DWI images.
• BolusTrak enables accurate synchronization of high-resolution CE-MRA acquisitions. BolusTrak uses a real-time fluoroscopic display of bolus arrival in the area of interest and manual start of the target acquisition. BolusTrak in combination with CENTRA minimizes venous contamination and produces optimal arterial vessel contrast and resolution.
• TRACS enables accelerated time-resolved contrast-enhanced vascular imaging. TRACS uses SENSE for image acceleration and CENTRA phase-encode ordering for optimized contrast.
• m-FFE provides unique image contrast – ranging from 2D or 3D gradient-echo sequences to the combination of echoes.
• Venous BOLD provides T2*-weighted 3D sequences compatible with SENSE. These sequences are useful for evaluating various brain anomalies associated with venous blood.
• Phase contrast (PC) sensitive imaging for the visualization of moving fluids.
• MobiFlex and MobiView, compatible with all sequences, for easy Total Spine imaging.
• T2* perfusion analysis.
• Diffusion imaging processing with automatic generation of the ADC maps.
• Perfusion tools package, enabling:
• Dynamic multi-slice T2*-weighted sequences based on single- or multi-shot FFE or FFE EPI methods, including the PRESTO technique.
• Processing and calculation of T1 and T2* hemodynamic maps including Mean Transit Time (MTT), Time to Peak (TTP), Time of Arrival (T0), Negative Integral (NI), Index or upslope. All post-processing can be included as an in-line step within Examcard
• Prospective Motion Correction: accounts for subject motion by real time monitoring of motion during acquisition and adjustment of acquisition parameters accordingly. PMC enables overall improvements in image registration.
• 3D PRESTO
• Whole brain coverage and high temporal-resolution T2*-weighted imaging for perfusion-weighted and BOLD imaging studies.
• Higher temporal resolution and coverage compared to traditional multi-slice techniques.
• Reduce sensitivity to susceptibility and flow artifacts associated with EPI techniques, enabling imaging throughout the brain and into the skull base.

MSK Pro
• SE, TSE, and FFE sequences, with fat suppression provided by STIR, ProSet, SPIR and adjustable fat suppression with the SPAIR method.
• Balanced acquisitions (bFFE) for high-resolution morphology scans.
• DRIVE combined with TSE to increase sensitivity to fluids (with good T2 weighting), even with short TRs.
• Turbo-STIR for fat-suppressed evaluation of bone bruises.
• TSE with asymmetric profile ordering for proton density weighted imaging of joints with higher spatial resolution or faster scan times.
• Mixed Mode (interleaved IR/SE for combined T1 & T2 map calculation).
• Multi-Echo T2 measurements (up to 32 echoes) for T2 mapping.
• 3D FFE with ProSet for water-only (selective excitation) sequences. Optimizes cartilage and/or fluid imaging with high-resolution in all directions.
• e-THRIVE for 3D high-resolution fat-suppressed imaging for MR arthrograms and evaluation of soft tissue lesions as well as rheumatoid arthritis.
• MobiFlex for simple visualization of total spine imaging and multiple-station long bone studies.
• Dynamic imaging sequences for TMJ or other joint studies.
• Includes protocols for imaging in the presence of prostheses, with improved susceptibility using SENSE, modifications of water-fat shift and user-specified bandwidth.
• Up to 1024 acquisition resolution and flexible reconstruction resolution via interpolation.

Body Pro
• TSE sequences with respiratory triggering (in combination with breath hold or free breathing).
• MultiVane motion correction for T2w TSE diagnostic images, even in case of severe patient motion.
• In and out of phase FFE/TFE sequences .
• SPAIR for high uniformity fat saturation.
• e-THRIVE volumetric imaging with fat suppression, in short breath-hold times Keyhole for high temporal dynamic imaging.
• Diffusion-weighted sequences with automated creation of Apparent Diffusion Coefficient (ADC) maps.
• MRCP sequences, (radial) single shot and 3D acquisitions.
• High-resolution pelvic imaging.
• VISTA: isotropic 3D TSE pelvic imaging allowing volumetric acquisitions to be reconstructed in any plane.
• MobiView and MobiFlex for automatic composition of data sets from multi-station acquisitions into full FOV images.
• Dynamic scan techniques for monitoring and evaluation of contrast uptake viewing.
• High Resolution Diffusion / DWIBS package enables single or multi-station high resolution diffusion weighted imaging with background suppression. Patient and physiological motion is controlled by navigator-based motion correction.
• MotionTrak Body includes a real-time respiratory navigator to synchronize data acquisition to the respiratory cycle of the patient. Options include: gating, tracking, gating & tracking, triggering, triggering & tracking. Tracking improves slice accuracy position over multiple breath hold sequences. Designed for all Body applications, including diffusion and DWIBS.

Breast Pro
• SPAIR for high uniformity fat saturation.
• e-THRIVE for volumetric coverage with uniform fat suppression.
• BLISS, two bilateral sagittal volumes within a single acquisition.
• Diffusion-weighted sequences with automated creation of Apparent Diffusion Coefficient (ADC) maps.
• Silicone-Only sequences optimized for breast implants.

Cardiac Pro
• Black blood prepulses to suppress blood signal for optimized myocardial and lumen visualization.
• Multi Slice / Multi Phase for function studies.
• Retrospective triggering with real-time prospective updating for full R-to-R coverage of function studies.
• Temporal profile sharing for playback frame rates higher than acquisition frame rates.
• VCG gating for robust ECG gating and triggering (includes a four-lead cable set).
• ECG-triggered STIR (inversion recovery TSE) including black blood imaging (triple IR)
• ECG-triggered Inversion Recovery (including PSIR) for myocardial tissue characterization.
• Non-invasive quantitative flow measurements of blood, including overlaid color-encoded flow maps on the console.

MRA Pro
• 3D FFE sequences for contrast-enhanced MRA, including assessment of carotids, peripherals and renal arteries.
• Quantitative flow with variable VENC values for non-invasive measurements of blood flow in three directions.
• 2D/3D Balanced TFE/FFE for fast, high-resolution non-contrast enhanced vascular imaging.
• Phase-Contrast Angio for imaging of brain vasculature.
• TRANCE for 3D high contrast TSE acquisitions without vascular contrast agents.
• Time-of-flight (inflow) sequences with TONE to improve contrast and MTC to reduce peri-orbital fat signal.
• CENTRA for 3D high-resolution contrast enhanced imaging to allow an increase in spatial resolution without venous contamination.
• Keyhole imaging to improve temporal resolution in dynamic studies.
• BolusTrak for synchronization of high-resolution CE-MRA acquisitions with a real-time fluoroscopic display of bolus arrival in the area of interest.
• MobiView for automated composition of multi-station acquisitions (e.g. MRA runoffs) into single images.
• MobiFlex for setup and acquisition of complex multi-station exams, combining different FOVs, resolution, geometries and SENSE acceleration factors.
• VCG gating for robust ECG gating and triggering (includes a four-lead cable set).

Advance Scanner:

System Overview
The Achieva 1.5T – Diamond Select Advance is a unique solution designed to meet the demanding criteria of today’s progressive imaging centers: As with all Achieva 1.5T Systems, the Achieva – D.S. Advance offers new levels of software automation plus a new modular workspace environment improve operational efficiency and workflow. The latest computing and hardware components ensure cutting edge acquisition speed, resolution and signal to noise. A combination of ScanTools and targeted optional Specialist Packages expand the range of leading clinical procedures available. The Achieva – D.S. Advance delivers it all, packaged in an environment for optimized patient comfort. Altogether a powerful system that offers a unique pathway for growth today and expansion tomorrow.
The Achieva 1.5T – Diamond Select Advance scanner comprises:
• 1.5T magnet
• Patient environment
• High Performance gradient system
• FreeWave RF system
1.5T magnet
The magnet system of Achieva 1.5T – Diamond Select Advance offers high intrinsic homogeneity – typically 0.5 ppm- enabling superb fat suppression via techniques such as SPIR and SPAIR. In addition, the Achieva 1.5T – D.S. Advance system’s high homogeneity allows rapid per-patient dynamic shimming for excellent image quality over the entire 53 cm (20.9 in.) field-of-view. The ability to employ large FOVs facilitates run-off studies using as few as three stations, and enables single-acquisition MRA studies encompassing the circle-of-Willis down to the aortic arch. The Achieva 1.5T – D.S. Advance system’s excellent homogeneity also affords easy imaging of off-center anatomy. The only difference between the Achieva from the Diamond Select Advance program and other new Achieva systems is that some of the main components like for example the magnet for the Diamond Select Advance system are refurbished and certified, which may also be a complete system of limited age. Achieva 1.5T D.S. Advance systems defined as such achieve the same performance and have the same system lifetime specifications as a new system.
• High homogeneity enables large 53 cm field-of-view
• Superconducting screening coils reduce magnetic field susceptibility caused by moving ferrous objects.
• Lightweight design and compact fringe field footprint facilitate easy siting
Lightweight design and compact fringe field footprint facilitate easy siting Typical helium consumption (as low as 0.03 l/hr for stationary installations) extends time between cryogen.