Chapter 3-System Overview The Oasis MR I System is designed for use as a diagnostic imaging device. It uses a super conductive magnet to produce cross-sectional images that display the internal structures of the head and body. This system configuration is highly reliable and has many features such as: • Patient-friendly open MRJ magnet • High power and high sl ew rate gradient system • Windows XP-based platform workstation • Large color LCD monitor • Rich variety of image anal ys is programs • High-speed process ing capability This chapter contains the fo ll owing inf ormation about the Oasis MRJ System: • Descriptions of hardware and software components and their basic functions • Pr ocedures for starting up and shutting down the system • General overview of Windows functions • Descriptions of the Launcher buttons, whi ch are used to access the windows, and features of the Oasis M RI System System Components The system components of the Oasis MRI System are described in this section. QS4·53287v4 3. 1
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Transcript
Chapter 3-System Overview
The Oasis MRI System is designed for use as a diagnostic imaging device. It
uses a superconductive magnet to produce cross-sectional images that display
the internal structures of the head and body. This system configuration is highly
reliable and has many features such as:
• Patient-friendly open MRJ magnet
• High power and high slew rate gradient system
• Windows XP-based platform workstation
• Large color LCD monitor
• Rich variety of image analysis programs
• High-speed processing capability
This chapter contains the fo llowing information about the Oasis MRJ System:
• Descriptions of hardware and software components and their basic functions
• Procedures for starting up and shutting down the system
• General overview of Windows functions
• Descriptions of the Launcher buttons, wh ich are used to access the windows,
and features of the Oasis M RI System
System Components
The system components of the Oasis MRI System are described in this section.
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0AS Is~ MRI System Reference Manual T'MhtJent MqHt
Definition: CPU is an acronym for central processing unit.
Note: If you have purchased the optional UPS (uninterruptible power supply) and a power failure occurs, perform the following steps:
1. Close all open windows.
2. Cancel all storage and restore jobs in the Job Queue window.
3. Cancel all printing jobs.
4. Cancel all DICOM transfer jobs.
Data that is in the save process will finish and be saved.
After power has been restored, wait approximately five minutes before rebooting the system.
3-2
Workstation
You will operate the Oasis MRI System from a workstation, as shown in figure
3-1 , which will be located outside of the scan room that contains the Oasis MRJ System magnet. The workstation will include a console unit with the fol lowi ng
Two control panels are located on the gantry. Scans can be started, aborted,
paused, and restarted frorn ins ide the scan roorn by pressing the appropriate
button on either control pane l.
The buttons and indicators on the gantry control pane ls are shown in figure 3-5
and their functions are described in this section. The button lights indicate
operation status.
Longitudinal move counter
Clears the longitudinal
move counter
CLEAR
Ba vail li(J = ~o~oto 0
~BB
lateral move position
Up/down move position
Emergency patient table release
Emergency patient table stop
Move left--+-.-On/off illumination
Out/down move --+----+\
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Move right
Scan status display
Laser localizer
on/off
Scan start
Scan stop
Scan suspend/resume
Figure 3-5. Gantry control panel detail.
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0AS/S~ MRI System RefeTence Manual n..Pau ... .._
Gantry Control Panel Indicator
=BBBB
0 <JO I>
D
, .. - ..... ( SCAN': ' ' ........ ,.'
Gantry Control Panel Button
lv STOP~
CLEAR
0
®
3-8
Function
Longitudinal move counter
Lateral move counter
Lateral patient table position indicator
Up I down patient table position indicator
Scan status display
Function
Emergency patient table stop
Emergency patient table release
C lears the longitudinal move counter
Brings the patient table to the up pos ition
Moves the patient table into the magnet bore
Forward (slow)
Set
Speed fixed
Description
Indicates the position of longitudinal direction (forward and backward). When the orig in (the back end of longitudinal direction) has not been detected right after the contro l program has been sta1ted, it is unlit.
Indicates the position of lateral direction (right and left). When the origin (the center of the lateral direction) has not been detected right after starting the control program, it is unlit.
<J: Left 0 : Center r> : Right
: Highest and backmost position : Position other than the highest position.
Lit during the scan .
Description
Quickly stops operation of the patient table and keeps the state of emergency stop until the RELEASE button is pressed. In the state of emergency stop, all control panel buttons are turned off.
Releases the patient table from the state of emergency stop.
Clears the longitud inal move counter to 0. The CLEAR button does not clear the lateral move counter. If it is pressed during the set mode, the set mode is released.
When the patient table is not at the highest position, the IN button functions as an ascending button. As soon as the patient table reaches the highest position, the laser localizer is lit.
When the patient table is at the highest position, the IN button functions as an advance button.
If the IN and OUT buttons are pressed at the same time during a forward move, the patient table moves forward at slow speed.
Moves the laser-localized area of interest to the isocenter of the magnet.
If the IN button is pressed again (released once and pressed again right away), the current speed is maintained.
Out When the patient table is not at the back end of the longitudinal move, the OUT button functions as a backward button.
If the OUT and IN buttons are pressed at the same time during Out (slow) a backward move, the patient table moves backward at slow
® speed.
When the patient table is at the back end, the OUT button Down functions as a descending button. As soon as the lowest
position is reached, the laser localizer goes out.
Speed fixed If the O UT button is pressed again (re leased once and pressed again right away), the c urrent speed is maintained.
@) Left move Moves the patient table toward the le ft.
Left move (Slow) If the LEFT and RIGHT buttons are pressed at the same time while moving left, the patient table moves left s lowly.
@ Right move Moves the patient table toward the right.
Right move (Slow) If the RIG HT and LEFT buttons are pressed at the same time while moving right, the patient table moves right s lowly.
Moves the patient table to position the area of interest at the
B center of the magnetic fi eld. The patient table move is carried
Set mode transit I set out whi le the SET button is kept pressed. During the set mode, move the SET button LED blinks and the longitudinal move counter
shows the remaining distance. When the patient table move is completed, the laser localizer goes out.
Speed fixed If the SET button is pressed again (released once and pressed aga in right away), the current speed is maintained.
lill Laser localizer on I off While the LASER button is lit, the localizer laser is on. Th is laser is used for aligning the area of interest. -
I START I Scan start Starts the scan.
EJ] Scan suspend I resume Suspends or resumes the scan.
8 Scan stop Stops the scan.
I LLUMI I On I off illumination Ilium inates the gantry.
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Special State Description
The emergency patient table STOP button or the Emergency button on the
All buttons off control unit has been pressed. After checking the patient table to determine that there is no abnormality, press the RELEASE button to release the emergency stop state.
The patient table control program has restarted and the system is in the
All buttons blinking state of emergency patient table stop. After checking the patient table to determine that there is no abnom1ality, press the RELEASE button to release the emergency stop state.
Button blinking The patient table control program has restatted and the blinking button is on. Press the blinking button to turn it off.
Longitudinal move position When the patient table control program has restatted, this indicator remains indicator off unlit until the origin (the back end ofthe patient table) is detected. When
the origin has not been detected, the patient table can only move backward.
IN button off Move the patient table backward until the system can detect the origin for
(in the state other than operation longitudinal direction.
limit)
Lateral move position indicator When the patient table control program has restatted, this indicator remains off unlit until the origin (the center of lateral direction) is detected. When the
origin has not been detected, the patient table can only move to the center.
LEFT/RIGHT button off Move the patient table to the center until the system can detect the origin
(in the state other than operation for lateral direction.
Corl.rrn. th.f ndwortl.:CII'YIKbon 6wM:ew ~ 1C1 .net the lnt.n.t. ~ ~ c.n t- aoc4"'1Hd 2Hloii"C(J~Miaf'l ~ IY.t.nl l•I'IM •Y••I.ibl•l( U. trwn.t, (bro.dbend CCif1nM:tlonl. CIM'W10t IN ~ci
Figure 3-7. Monitor Service mode screen display.
If the system is not in Monitor Service mode, use the following procedure.
To power up the system from shutdown, fo llow these instructions :
1. Make sure the patient table is at the backmost position. If the table is in the
magnet, use the release bar to manually pull the table out of the magnet.
2. Press the C PU on/off button (figure 3-8) to power up the control unit.
3. Press the MR on/off button (figure 3-8) on the control unit to power up the
MRI system unit and patient table.
CPU on I off
MR on I oft
Figure 3-8. The CPU and MR on/off buttons on the control unit.
Copyright@ 2012 by Hitachi Medical Systems America, Inc. All rights reserved.
Note: When a CD or DVD is ejected immediately after system booting. the system occasionally displays the TriaiOptlonManage.exe -No Disk window. Click Continue when this window is displayed to continue normal system booting.
Note: The User name and Password can only be changed by the Account Administrator initially established by the Hitachi field service engineer.
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Syslem Overview 0 4. After about three minutes, the Log On to System window will open, as
shown in figure 3-9.
OK J [ Sh.Jtdown J
Figure 3-9. The Log On to System window.
Logging On
To log on to the Oasis MRI System, follow these steps:
I. Type your User name and Password.
2. C lick OK.
The Launcher w indow opens, as shown in figure 3-10.
Figure 3·1 0. The Launcher window.
The Launcher Toolbar at the top of the window contains buttons that allow you
to access and perform the functions of the Oasis MRl System. The Launcher
Toolbar and its functions are explained in detail later in this chapter.
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Note: The software is able to reconstruct images from the data it has acquired up to the point at which a scan is stopped, provided that at least half the data needed has been acquired. This reconstruction cannot be done when a Time of Flight (TOF) sequence is used, or when the Half Scan or Half Echo options are turned ON.
3. 16
Stopping or Starting a Scan That Is in Progress
You can use the online features of the Oasis MRJ System or the buttons of the
control unit or gantry control panel to pause or stop a scan that is in progress.
Pause During Prescan
When the START button is clicked in the lower right corner of the Exam
window, a prescan operation begins and the START button changes state to
become the PAUSE button.
While the system is performing the prescan operation, clicking the PAUSE
button has no effect until the prescan is complete. The entire prescan continues
to completion.
Pausing a Scan
To pause a scan that is currently running, click the PAUSE button in the lower
right corner of the active Exam window (refer to Chapter 5, Exam WTndow
Scanning Functions, for more details).
The scan also can be paused by pressing the PAUSE button on one of the gantry
control panels.
The START button on the workstation control unit can also be used to pause a
scan that is currently running. The scan can be resumed by pressing the START
button a second time.
Restarting a Paused Scan
To restart a scan after it has been paused, click the CONTINUE button in
the lower right corner of the active Exam window (refer to Chapter 5, Exam
Window Scanning Functions, for more details).
You can also restart a scan by pressing the START button on the workstation
control unit or on one of the gantry control panels.
Aborting a Scan
To abort a scan that is currently running, click the STOP button in the lower
right corner of the active Exam window (refer to Chapter 5, Exam Window
Scanning Functions, for more details).
You can also abo11 a scan by pressing the ABORT button on the workstation
control unit or on one of the gantry control panels.
Note: Remove any DVDs from the DVD drive before system startup.
Note: After the remote desktop connection is established (by selecting Monitor service), the workstation computer monitor switches to "personal information protection mode". The following restrictions exist for personal information protection mode:
• The Patient Registration window closes
• The standard patient registration process becomes unavailable. Use the Rapid Registration process to register new patients.
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System Overview 0 Normal Logging Off I Shutdown
To log o ff o r shut down the system, cl ic k the Shutdown button on the Launc her
Tool bar.
The Shutdown System window appears. C lick the down arrow to choose an
option, as shown in figure 3- 11.
Shutdown System
F.iitactii MRI System
Please choose lhe operation to perform.
Monll!lr ser.-l::e
~a Lock
b====~~CK _ _JI [ earcec:J
Figure 3-11. The Shutdown System window.
You can then select the options described be low.
Monitor service - This is the default option in the Shutdown System window
and the selection recommended by Hitachi. This setting (figure 3- 12) a llows the
Service department to continua lly monitor the system status (for example,
0AS Is~ MRI System Reference Manual 1'1MI hUnt llqnet
Note: To close the Shutdown System window without choosing an option, click the Cancel button instead of the OK button.
Note: Remove any DVDs from the DVD drive before performing forced shutdowns or restarts.
3- 18
Shutdown-To shut down the system, follow these steps:
l. Press the MR on/off button on the workstation control unit.
2. C lick Shutdown from the Shutdown System window list.
3. Click OK
The system will shut down and the power supply will be shut off.
Logoff- To log off the system but leave it running, follow these steps:
I. Click Logoff from the Shutdown System window list.
2. Click OK
This ends your session, lea\'ing the system running on fu ll power. The system
will display the Log On to System window. To begin a new session, a user must
enter a User name and Password.
Lock- To lock the system for security purposes (for example, if you need to
step away for a few minutes), follow these steps:
I. C lick Lock from the Shutdown System window list.
2. C lick OK
The system is locked until you re-enter your password.
Forced System Shutdown I Restart
You may not be able to use the normal system shutdown procedure if the system
is " locked up" and not respondi11g. In these instances, you may be able to use
the forced system shutdown I resta1t methods described in this section.
!ll Caution Forcing a shutdown or restart may interfere with saving information. Whenever
possible, use the Shutdown button on the Launcher Tool bar to perform system
shutdowns as described in the "Normal Logging Off I Shutdown" section of this
chapter.
Before performing a forced shutdown or restart operation, determine that the
fol lowing cond itions have been met:
• The system is unable to perform any operations.
• All windows that can be closed have been c losed and Exam windows have
been c losed for at least one minute.
Copyright@ 2012 by Hitachi Medical Systems America, Inc. All rights reserved.
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System Overview 0 • If possible, the following processes have been completed:
- Scanning/reconstruction
- Post processing
- DVD storing/restoring
- Transmission/reception of network messages
The Forced System Shutdown button is located at the bottom right of the screen.
Right-click the button and select an option from the menu that appears, as
shown in tigure 3-13.
Figure 3-13. Forced options.
Forced Shutdown of the system-Select this option when the nom1al
shutdown process is not working properly (refe r to the Normal Logging Off I
Shutdown section in th is chapter for more deta ils). Use the fo llowing procedure:
I. C lick Forced Shutdown of the system.
2. A Confirmation window opens. as shown in figure 3- 14. C lick Yes to
continue or No to stop the forced shutdown.
~innation ]
Do )'OU fO<ce lhe ] .,.tem<!Vdown?
~et _j 1 tio 1
Figure 3-14. Shutdown Confirmation window.
3. If Yes was c licked, a message and progress bar is displayed while the Oasis
MRJ System shuts down.
4. A message is displayed stating that Windows is shutting down.
5. The CPU REA DY and MR READY LEOs on the workstation control unit
go out and the monitor screen goes black.
6. Wait at least 60 seconds after the CPU READY and MR READY LEOs
have gone off before restarting the CPU. Refer to the System Startup section
of this chapter for normal startup instructions.
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Note: During operation, the End Program I This program is not responding dialog box may be displayed. If this happens, click the Cancel button to continue.
3-20
Forced resta rt of the Application -Select this option if a single application
(for example, a post-processing task) is not functioning properly. A forced restart
of the application takes the least amount of time. Use the fo llowing procedure;
I. Close all windows that can be c losed.
2. C lick F orced resta rt of the Application.
3. A Confirmation window opens, as shown in figure 3-1 4. C lick Yes to
System Overview 0 The various system settings and post-processing tasks, as shown in figure 3-45,
can be added to the Launcher Toolbar as individual buttons or as options in one
of the list items. All of the system settings have the same default button image.
The post-processing tasks have different button images associated with each
task. •• Launcher Customlzatlon
System settings
OK I l Ctncol
·~ Launcher Customlzatlon
Post-processing tasks
Figure 3-45. Examples of button images.
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Note: Default Launcher buttons and I or list items can be deleted from your Launcher too/bar, but will be restored when the Default Settings button is clicked.
3-44
Deleting an Item From the Launcher Toolbar
To remove a button or list item from the Launcher Tool bar, perform the
following steps:
I. In the Current launcher buttons/Drop-Down menus box, click to select
the item to delete (figure 3-46).
2. Do one of the following:
Click the left arrow button. This deletes the selected item from the
Cur rent launcher buttons/Drop-Down menus box.
OR
• C lick the red X button.
3. Click OK to apply your changes and close the Launcher Customization window. The deleted button or list item is no longer displayed on the
When the Launcher Toolbar is docked to the left o r right side of the monitor
screen, used disk space is indicated as a percentage(%) displayed below the
device icon (figure 3-58).
Figure 3-58. Disk space usage indicated as a percentage.
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Help Feature
G . The Launcher Toolbar contains a Help button.
Note: Only servers and pages within the hitachimed.com domain, including the home page (http:/! www.hitachimed.com), are accessible using the Internet Browser command..
Note: The following operations and fuctions are unavailalbe with the Internet Browser command:
• File downloads, execution and installation
• Java Applet I Active X component execution
• Searches using the search bar
• Right-click context menus
• Opening other windows
• Too/bar changes
• PDF displays
3-52
Clicking the Help button arrow displays a list of help-related options as shown
in figure 3-59.
Sentinel Messenger
Internet Browser
Figure 3-59. Help button options.
You may select from the fo llowing features:
Version Info•·mation - Opens the Version Information window, which
prov ides the version number of your site's Oasis MR I System software, as
shown in figure 3-60.
•:t Version Information
Hitachi M'<I System
OASIS
Ver•"n Number : X3.0A Q;/1$/2011)
Senol Number . 22951
Copyrict>t (C) H~ochi Medicol Corporol"n 2007- 2011 All Richts Re:erved
Figure 3-60. The Version Information window.
Sentinel Messenger -Provides a blank email message that you can complete
and send to a Hitachi field serv ice engineer to report a system problem or ask
a question. However, do not send the email while actively scanning. Certain
maintenance functions can also be carried out by remote access using the
Sentinel feature. When these maintenance tasks are started or completed, a
dialog box is displayed with a message notifying you of the function status.
Internet Browser-Opens the home page of the Hitach i Medical Systems