True-In-One Console Theory

The True-In-One Console consists of the following components.

• Host Computer - incorporates the Scan Data Disks and CDIP/CDIP2 board from DARC Node in the previous console GRE/GOC4. There is no DRAC node presence in TIO (True-In-One) console.

• GPU: an optional graphic card is used as GPU card for ASIR, 16 FPS option and Fluoro option. Image generator (IG) node is not used for TIO console.

• Intercom - Is the same as previous console version GRE/GOC4.

• Cooling Package, including:

  • Fans

  • Front and Rear Covers with Foam Insulation

  • Air Filter

For TIO console, Host computer receives raw data from the Data Acquisition System (DAS) through an on-board Data Interface processor (CDIP/CDIP2) card, and stores that data in the Scan Data Disks located in the Host computer. The raw data is then delivered from the scan data disks in the Host PC to the IG processes in Host PC. The IG processes then create images (If GPU card is installed, GPU card will be utilized during BP reconstruction). The images generated are saved in image disk in host computer.

The host computer for the True-In-One console will be an off-the-shelf, Linux-based system, which meets the EMC standard CISPR 11.

Key performance specification of the TIO console are:

• Recon times: 6 fps with software BP, 16 fps with GPU BP

• Latency: < 5.0 seconds

• Image Matrix: < 512 x 512 pixels

Host Computer in TIO console not only provides the same functions as previous console GOC4, but also provides data acquisition and image reconstruction functions.

Host Computer controls all the TIO console functions and data flow, including actual image generation. Software in Host computer sends the reconstruction request, recognize the recon mode, timing, parameters, and data, and be able to generate the image set. The raw data is first restored from the disks. The Host Computer then creates an image set and requests image generation to the IG node (If presence) or IG process in Host Computer. While most of the software components (e.g. Recon_Control, Data_Restore, Image_Buffer, and Data_Acq) reside on Host Computer, the components related to image generation also reside on Host Computer.

Main data flow of the Host Computer is described as follows:

• Receive raw data from the Gantry

• Store the raw data to the scan data disks

• Restore the raw data from the scan data disks and transfer to buffer memory in Host Computer.

• Take multi-image streams from Image generation processes ran on Host computer, and be saved on image disk in Host Computer.

The Host Computer is comprised of the following:

• HP computer: a computer using a high-performance PC workstation

• System disk: the OS and Applications software are stored on this disk

• Image disk: Images are stored on this disk

• Scan data disks: the raw data are stored on two scan data disks.

• CDIP/CDIP2 card: the DAS Interface Processor card

• Gigabit Ethernet (GbE) cards

• DVD-ROM drive: will be used for software installation and stand-alone use

• Floppy drive: a 3½” floppy drive will be used for BIOS flash, if necessary

• SCSI card: used to connect SCSI tower

• Graphics board: connect to two LCD monitors

• GPU: an optional graphic card is used for 16 FPS image reconstruction, ASIR or Fluoro option.

This PCI card accelerates the back-projection process of the TIO console and is plugged into PCI-e slot in the Host Computer.

This parallel beam back-projector provides the TIO console the ability to off-load the back-projection application from general-purpose processors to fully programmable hardware. This option dramatically increases the reconstruction performance per cost ratio.

Following are the high-level CTQs for the GPU card:

• Perform parallel beam back-projection at >16fps

• PCI-e compatible

• Reconstruct any image matrix size up to 524,288 32bit pixels

The Host computer is powered by an AC switching power supply internal chassis. The Host Computer receives its AC power from a 120Vac single-phase outlet box internal to the console chassis.

A redundant power supply and/or UPS option does not need to be supported by Host Computer. The NGPDU will provide 120Vac to the operator's console. The switching power supply internal to Host Computer is required to allow ±5% stability.

These AC switching power supply in Host Computer shall be ATX compliant.

ATX: standard PC power supply, 20-pin for motherboard, 4-pin for peripherals

The table below lists the power supply wattage, input port (max current), and output port fo Host Computer.

The intercom block has an audio amplifier circuit, enabling communication between the console operator and the patient on the table. This block also has sound source switching functionality.

The sound sources are:

• Console microphone on the SCIM (Operator's voice)

• Gantry microphone output (Patient's voice)

• Auto-voice L and R (output from the host computer)

These sound sources are multiplexed by the TALK button on the SCIM and by the Auto-voice output itself. The selected output signal goes to the following devices, based on prioritized logic.

• Table speaker

• Console speaker on the SCIM

• Auto-voice recording input on the host computer

  Also refer to Intercom Adjustments.

The cooling package consists of three (3) components:

• Fan Assembly

• Air Filter

The Fan Assembly consists of one cooling fan mounted on TIO console rear cover plate at host computer side.

The Air Filter is designed to capture room contaminates. It needs to be periodically cleaned (during a regular PM cycle).

The following diagrams illustrate the Cooling Package Components.

Figure 4. Console Cooling Fan

Figure 5. Console Front Cover, with air filter

The TIO console supports two types of diagnostic, power-on test and offline test. The power-on test is a subset of offline test. This test sweeps devices condition and checks the motherboard at system power-on after OS booted. The offline test checks each device condition, interface, and environment more strictly.

TIO console supports some kind of diagnostic tools.

• Host Computer diagnostics

• DIP diagnostic

• Scan Data Disk diagnostic

• Network / connectivity test

• GPU Diagnostics

• Peripheral Media Tower Diagnostic

• SCIM / Keyboard Function test

Assemblies are assigned as FRUs based on the likelihood of need for replacement and fixed-right- first-time (FRFT). The following is a breakdown of TIO Console FRUs:

• Host Computer

• CDIP/CDIP2 Board

• Hard disk drive

• GPU card

• Graphic card

• Ethernet card

• DVD ROM Drive

• Host Power Supply

• AC outlet box

• Switch Hub

• intercom

• Peripheral Media Tower

• Power Switch Assy

• Fan Assy

Data Flow Dictionary

1. Gantry -> CDIP/CDIP2: Serial data receive from a fiber optic interface

2. CDIP/CDIP2 -> Hard Disk: Scan Data Store

3. Hard Disk -> Recon Control: Offset Data

4. Hard Disk -> Data Restore: View Data

5. Recon Control -> IG process on host: Calibration Data, offset vector, tables, parameters

6. Data Restore -> IG process on host: view data transfer between software processes within host computer.

7. IG process -> Reconstruct images with the offset data and view data received, call GPU API to do BP if GPU card is presence in Host Computer.

8. IG process -> Image Buffer Create: Pixel image data and small header are transferred from the IG process in host or in optional IG computer to image buffer create process in Host.

9. Image Create -> Image DB: DICOM image data and are transferred from the image buffer create process to image DB in host.

Click on the PDF icon below, for a PDF version of the TIO console Interconnect Diagram.

Figure 6. TIO console Interconnect Diagram

TIO Console Interconnect Diagram.pdf