Cirs MRIdian Phantom Скачать руководство пользователя страница 14 | Manualshive

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Cirs MRIdian Phantom Скачать руководство пользователя страница 14

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C. Oscilloscope Connection

The phantom is equipped with a special feature that allows
the end user to check whether there is latency between the

position of the MRI moving target and the release of the beam

based on MRI imaging of the this target.

To accomplish this task the phantom is equipped with:

I.

An assembly containing two optical switches, which is

housed inside of the main linear actuator of the phantom.
When the lead screw of the linear motor crosses the

optical switches it provides two electrical signals that can

be analyzed on an oscilloscope. The signal from each

individual optical switch is a square wave as shown
below.

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Содержание MRIdian Phantom

Страница 1: ...Motion Phantom for MRI Automatic Tracking and Gating USER GUIDE...

Страница 2: ...nt Overview 2 Description of Phantom 2 Specifications 3 Use of Phantom 4 A Unpacking Instructions 4 B Assembly Instructions 8 C Oscilloscope Connection 13 D Repacking Instructions 17 Care and Handling...

Страница 3: ...IRS model 008A Linear actuator as required by input of project 796 01 00 Cross bars front and back for Actuator indexing to Viewray system treatment couch Custom Motion Controller box modified CIRS mo...

Страница 4: ...el 008V The closest ferrous or metallic parts to the MRI signal generating Body are the ones from the Custom Linear actuator MRI signal generating Body Dimensions 254mm x 236mm Gel Volume 229 3mm x 22...

Страница 5: ...before shipping If the container receives a shock exceeding 25 G force the sensor display arrows will change to blue If the sensor has been activated and is blue a claim may need to be filed with the...

Страница 6: ...o Coils supports and set them aside Pay attention to the foam trays that accommodate these parts as they are fragile 2 Remove cables and accessories bags from case and set them aside 3 Remove MRI Movi...

Страница 7: ...ull base and the actuator assembly from case and set it aside 5 Remove Motion Controller box from case and then MRI Body Carrying Handle which is shipped inside of one of the removal cutout of the MRI...

Страница 8: ...Carefully take the MRI Body out from the case and set it aside in a horizontal position laying it on the straight edges of the body s ends 7 Remove the remaining hardware from the case and set it asi...

Страница 9: ...e corresponding MRI Body crossbar which can be identified by their labels circled in red Note Throughout this user manual Front and Back for both MRI Body and actuator are referring to such that Back...

Страница 10: ...blies to the Viewray couch following the naming convention explained before place the MRI Body between them as shown above Make sure the body slides inside the two supports and is guided by the walls...

Страница 11: ...marks 3 Position the Linear actuator on the other end of the couch The crossbars alignment pins and actuator base plate holes facilitate a quick alignment between the Linear actuator and MRI Body see...

Страница 12: ...torial B Pass two 20 1 5 long nylon thumb screws through the holes of top connector bridge and shafts Absylux connectors then screw them in the bottom connector bridge as shown in pictorial C If it be...

Страница 13: ...and they seem to be locked on the shafts use the thumb screws to push against by screwing them in the outer treaded holes the shaft which will un lock them see below 5 For proper alignment of actuator...

Страница 14: ...MRI imaging of the this target To accomplish this task the phantom is equipped with I An assembly containing two optical switches which is housed inside of the main linear actuator of the phantom When...

Страница 15: ...s analyzing two signals at once on channel 1 and 2 of an oscilloscope respectively To do adjustments to the signal that is provided by the optical switches and to analyze them on an oscilloscope follo...

Страница 16: ...see above and remove it 2 Unscrew the Optical switch fixation screw of the two inner Optical Switches and adjust the distance between them according to your research study Use the Adjustment Square to...

Страница 17: ...ion and for the homing sequence 3 Close the cover of the actuator box by hand tightening the aluminum thumb screws 4 Connect one of the provided DB9 shielded cable to the DB9 Female connector at the b...

Страница 18: ...motor and INF for that is toward the back of the actuator due to the fact that the Phantom is designed for Supine Head First As shown below it is recommended that SUP signal is analyzed on Chanel 1 a...

Страница 19: ...e Kit CAT5e 75 feet with USB 3 0 Gigabit Ethernet Adapter 1 Oscilloscope Cable VGA to DB9 4BNC Breakout cable Male 2 DB 25 male to male cable EMI Shielded 2 DB 9 male to male cable EMI Shielded 2 Gend...

Страница 20: ...and straps to lift MRI Body from Coils Support and carry it horizontal only see below Long Distances Use as much as possible the plastic storage shipping case Make sure the MRI Body is fully secured...

Страница 21: ...ring a South Dakota winter or Arizona summer If MRI Body and Moving Rod are accidentally frozen or heated bring them back to room temperature prior to use usually takes 24 hours The MRI Body should be...

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