Inveon Multimodality System Overview

Course Objectives   Identify the hardware components of the Inveon system.   Identify the software components of the Inveon system Upon completion of this course you will be able to... You should now be able to: Identify the Hardware Components of the Inveon Multimodality System External System Components Internal System Components PC Setup Power Cycle Bed Stage/ Bed Pallets   Identify the Software Components of the Inveon Multimodality System Graphic User Interface (GUI) Motion Control Panel Emergency Stop  and Reset File Management Laser Alignment Study Info Protocol Setup Generating a System Report Defragmenting Hard Drive Continue to the course assessment to complete the course.   The Inveon Multimodality acquires CT, PET, and SPECT data on a single bed platform. The CT source and detector are mounted coaxially on the same rotating stage as the SPECT detectors. The PET ring is inserted in the rear of the scanner. The internal scanner components are housed in a shielded gantry that has detachable cosmetic covers. Within the cosmetic covers, the internal components are shielded with a steel wrapper lined with lead sheets. The CT X-ray source and CT X-ray detector are mounted coaxially on the same rotating stage as the SPECT detectors.  Each SPECT and CT component is mounted on a computer-controlled linear stage that moves the component towards or away from the gantry's isocenter. The Inveon system is comprised of four computers and one or more gigabyte switches. The Embedded Workstation is connected directly to the Host workstation, which communicates with other workstations to process and analyze datasets through the gigabyte switches. The internal network gigabyte switch connects the Host workstation to the COBRA workstation. The external network gigabyte switch can be connected to one of your facility’s switches for internet connectivity. The Inveon Multimodality must be powered on and off in the correct sequence to accurately establish communication between the embedded workstation, host workstation, and image analysis workstation. Because the performance of the detectors and electronics depend on thermostability, It is recommended to leave the scanner on to maintain optimum performance. Powering OFF the scanner Powering OFF the scanner Checklist TitleChecklist TypeChecklist ContentStep 1HTMLVerify no workflows are running on the host workstation.Step 2HTMLClose IAW on the Host workstation.Step 3HTMLClose IAW on the embedded workstation using the touch monitor or a remote desktop connection to the embedded workstation.Step 4HTMLShut down the embedded workstation.Step 5HTMLPower off the scanner using the toggle power switch and main breaker on the system electrical connections in the rear of the scanner. Step 6HTMLOptionally, shut down the Host and COBRA workstations. Powering ON the scanner Powering ON the scanner Checklist TitleChecklist TypeChecklist ContentStep 1HTML Power ON the host workstation and COBRA workstation.Step 2HTMLPower ON the MM scanner using the toggle power switch and main breaker on the system electrical connections panel in the rear of the scanner. Step 3HTMLConfirm IAW is fully launched on the embedded workstation with no errors.Step 4HTMLConfirm COBRA software is fully launched on the COBRA workstation.Step 5HTMLStart IAW on the host workstation.Step 6HTMLStart microQ on the host workstation. Step 7HTMLConfirm the scanner is online and communicating with the host workstation. In the lower right-hand corner of IAW, verify that IAW displays Online Inveon_MM_Platform. This indicates that all components of the system are online and the configuration is the Multimodality Inveon. Within the bed chamber, the Inveon Multimodality has a standard shuttle bed assembly that is designed to support PET, CT, and SPECT studies using interchangeable bed pallets. There are three bed pallets that come standard with your system, and one optional extended bed pallet that can be additionally purchased. Additionally, the Inveon has a calibration tool that can also be mounted on the bed mechanism to perform various calibrations.  The shuttle bed is manually shuttled to three positions: 1) Position 1 is the loading position. In this position, there is nothing in the CT, SPECT, or PET fields of view. 2) Position 2 is used for laser alignment and SPECT/CT acquisitions. 3) Position 3 is used for PET only and trimodal CT/SPECT/PET acquisitions. The bed pallet is the part of the bed on which the specimen sits. These are made of carbon fiber, which provides strength and stability while minimizing the attenuation of photons. There are three pallets that can be used with the shuttle bed: -The 25 mm-wide ("high-mag") pallet is used for high-magnification scans. -The 38 mm-wide ("standard") pallet is the standard mouse pallet. -The 70 mm-wide ("rat") pallet is the standard rat pallet. -The 70 mm-wide extended pallet is optional and can be purchased in addition to the three standard pallets above. Watch the video to learn how to switch the bed pallets, making certain the pallet is locked into the bed shuttle.   The calibration tool can be mounted on the bed mechanism to perform CT center offset calibrations as well as SPECT calibrations. The SPECT point source is screwed into the end of the calibration tool to perform SPECT calibrations. Inveon Acquisition Workplace (IAW) is a Windows-based software installed on the host and embedded workstations. This software allows users to operate the MM scanner by actuating hardware components, creating protocols, running workflows, and calibrating the scanner. You will use with the graphic user interface (GUI) to perform various functions in IAW. The GUI is organized into 6 main sections, which allow you to manipulate and monitor different parts or functions of the scanner  IAW Main Toolbar 1. New: creates a new folder, study, protocol, etc. 2. Open: opens a protocol, study, acquisition, workflow, etc. 3. Refresh Navigator: refreshes the navigation explorer panel. 4. System Event Log: enable/disable the log panel. 5. Motion Control: opens the motion control panel. 6. CT Diagnostics: opens the MM acquisition diagnostics panel. 7. Bed Laser Alignment: starts the Bed Laser Alignment wizard. 8. Collimator Setup Wizard: starts SPECT collimator exchange wizard. 9. Subject Video: turns on/off the internal video camera for viewing the subject in the FOV. 10. Stop X-ray Source: turns off x-ray source. 11. Emergency Stop: stops data acquisition and all motion. 12. Emergency Power Shutdown: turns power off to system  -Create and save User and Calibration folders and studies in the Explorer panel -Click the System Info panel to obtain detailed system information and generate a system report Protocol panels are displayed in this window during protocol setup and execution. 1. Interlock: displays whether all 8 interlocks are closed (green) or open (red). 2. Bore Tunnel: displays whether the bore tunnel is installed (green) or uninstalled (gray). 3. DAQ: displays the connection of IAW on the host workstation to IAW on the embedded workstation. 4. Recon: displays the connection from IAW to the COBRA workstation (on/off). 5. RotStage: displays the position of the rotating stage in degrees; 0º corresponds to the gantry home position. 6. Bed-Horiz and Bed-Vert: displays bed position in millimeters. 7. RearShield: displays the percentage of how much the rear shield is open (100%) / closed (0%). 8. Manual Shuttle: displays the currently installed shuttle bed assembly. 9. Tpad: displays the status of the touchpad controls (on/off). Double-clicking the button opens the Motion Control panel in IAW. 10. Status: displays the temperature status of the motion amplifiers. 11. X-ray Src: displays the position of the x-ray source (in mm). 12. X-ray Det: displays the position of the x-ray detector (in mm). 13. Detector C and T: displays detector temperature (in °C) and pressure (in Torr). Pressure display is only applicable to the large FOV detector. 14. Volt-kV: displays x-ray voltage (in kV). 15. X-ray Source status: displays the status of the x-ray source (on, off, or tube conditioning). Button can be pressed when X-ray source is ON to turn it OFF. 16. Spot: displays X-ray source focal spot size (in µm) 17. Curr-uA: displays x-ray current (in μA). 18. SPECT (mm): displays positions of detector 1 and detector 2 (in mm). Detectors 3 and 4 are not available; therefore, these fields are inactive 19. Collimator: displays the currently installed collimator on detectors 1 and 2. This large section displays important status information, system messages, errors, and operational events. This section indicates whether the system is ready, online or offline, and the available scanner configuration and platform in the bottom right-hand corner of IAW. To access the motion control panel from IAW, select Panels > System > MM Motion Control, or select the Motion Control icon in the IAW toolbar. In the event of an emergency, you can turn off the scanner's x-ray source and all of its motors in two different ways: press the large red emergency stop button on the side of the bed chamber or select the icon in the top toolbar of IAW. Once the E-stop button is physically pressed, you must twist it to release the E-stop, and also reset the E-stop in IAW. To quickly stop all motions and turn off the X-ray source, press the large red button on the motion control panel of the bed chamber. 1. Press the E-stop button. 2. Release the mechanical E-stop button by twisting the E-stop button clockwise. 3. Browse to Panels > Diagnostics > MM Acquisition Diagnostics, and click Reset E-stop to reset the software. From IAW, you can press three different emergency stop buttons to stop the x-ray source, stop the x-ray source and motors, and emergency power shutdown.  1. Click on one of the E-stop buttons on the IAW GUI. 2. Browse to Panels > Diagnostics > MM Acquisition Diagnostics, and click Reset E-stop to reset the software. Folders in the system navigator of IAW are displayed in 3 organizational strategies. The User Folders are investigator or study folders that organize protocols and workflows for routine scanning. Factory Protocols are default protocols created by Siemens, and these protocols should never be modified unless instructed to do so. The System Calibration folder contains and organizes modality-specific calibration protocols. The Study Info Protocol panel allows you to add workflow-specific information into the header file of the datasets you create, such as the name of the institution, operator, or information about the specimen. To access this panel, select Panels > Acquisition > Study Info Protocol. Place a checkbox in the parameters you would like to include in your workflow setup, and click Apply. If you want to create your own parameters, select Create and enter the information you want to be prompted with during a workflow setup.  Refer to the User Manual for detailed information on parameter setup. A detailed technical summary of the workstation and scanner are available in a Notepad document; these are accessed in the System Navigator panel of IAW. The system report shows memory, disk space, version numbers, and other data specific to your configuration of the Inveon. This is important to note the free space in your F: drive. Datasets and image files are quite large, and the F: drive will fill up quickly.  It is highly recommended to archive all valid files in User Folders and System Calibration folder to maximize the amount of free space on your F: drive. Siemens recommends defragmenting the F drive on a weekly basis using the Windows Disk Defragmenter. Disk defragmenter is an application that reorganizes the data on your hard drive's partitions to maximize the amount of available space on the drive. This yields higher writer performance and lessens the possbility of running out of disk space during an acquisition.  Click on Defragmenting Hard Drive to open the step-by-step process Defragmenting Hard Drive Defragmenting Hard Drive Checklist TitleChecklist TypeChecklist ContentStep1HTML Click Start > All Programs > Accessories > System Tools > Disk Defragmenter.  Step 2HTMLClick (F:) in the Volume list, and click Analyze. Step 3HTMLIf the message indicates that you should defragment drive F, click Defragment and wait for the process to finish. Step 4HTMLWhen done, close any message windows, and close the defragmenter tool. This training describes the fully integrated Inveon system that unifies CT, PET, and SPECT data collection in a single platform. The Multimodality Inveon (MM) is a CT scanner with SPECT detectors mounted on the same platform as the x-ray source and detector, and the PET ring has been inserted into the rear of the scanner. A workflow solution provides a seamless integration for all three modalities. In addition, the Inveon Multimodality system is capable of CT-based attenuation correction for PET images. Once you place the specimen near the end of the bed pallet, open the Bed Laser Alignment panel by clicking the icon in IAW. Shuttle the bed to position #2, and use the laser crosshairs to align the subject in the center of the field of view. Once you have centered the specimen in the center of the laser crosshairs (still in bed position #2), designate which type of scan you are performing in IAW's Bed Laser Alignment tool. Press OK when you are finished, and the bed stage will move into the field of view. The table below shows the button you should select in the Laser Alignment panel according to the modalities you are using in the workflow. In the instructional video below, the laser alignment example is for a CT scan. Video: Laser Alignment Video: Laser Alignment