Subject Preparation - Revision history

Amnamyst at 13:53, 12 June 2025

2025-06-12T13:53:49Z

← Older revision		Revision as of 09:53, 12 June 2025
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	*[[Subject Preparation: EOG \| Subject Preparation: EOG]]		*[[Subject Preparation: EOG \| Subject Preparation: EOG]]
	*[[Subject Preparation: ECG/EKG\| Subject Preparation: ECG/EKG]]		*[[Subject Preparation: ECG/EKG\| Subject Preparation: ECG/EKG]]
			*[[Subject Preparation: Corrective Lenses\|Subject Preparation: Corrective Lenses]]

Amnamyst at 20:57, 1 February 2022

2022-02-01T20:57:44Z

← Older revision		Revision as of 16:57, 1 February 2022
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	*[[Image:pdf.png]] [[Media:MEG Fiducial Placement Instructions.pdf\|MEG Fiducial Placement Instructions (pdf)]]		*[[Image:pdf.png]] [[Media:MEG Fiducial Placement Instructions.pdf\|MEG Fiducial Placement Instructions (pdf)]]
	<br>		<br>

			== Next Steps ==
			If you will not be performing any additional procedures, proceed to [[Hardware Operation\|Hardware Operation]]. Otherwise, follow the directions in the next section.

	== Subject Preparation: Additional (Optional) Procedures ==		== Subject Preparation: Additional (Optional) Procedures ==

Amnamyst at 21:43, 27 January 2022

2022-01-27T21:43:21Z

← Older revision		Revision as of 17:43, 27 January 2022
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	== ~~Subject Preparation:~~ De-metaling ==		== De-metaling ==
	Before entering the MSR (Magnetically Shielded Room) subjects '''must''' remove any metal from their person.<br>		Before entering the MSR (Magnetically Shielded Room) subjects '''must''' remove any metal from their person.<br>
	There are no known risks associated with MEG recordings. Although wearing metal objects while in the MSR is not harmful to the individual, bringing metallic or magnetic objects into the MSR causes interference and high noise levels in the recording.<br>		There are no known risks associated with MEG recordings. Although wearing metal objects while in the MSR is not harmful to the individual, bringing metallic or magnetic objects into the MSR causes interference and high noise levels in the recording.<br>

Amnamyst: /* Fiducial Points / Head Coil Placements */

2022-01-27T15:01:52Z

Fiducial Points / Head Coil Placements

← Older revision		Revision as of 11:01, 27 January 2022
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	\| Red or Yellow\|\|Blue\|\|Green		\| Red or Yellow\|\|Blue\|\|Green
	\|}		\|}

			*[[Image:pdf.png]] [[Media:MEG Fiducial Placement Instructions.pdf\|MEG Fiducial Placement Instructions (pdf)]]
	<br>		<br>

Amnamyst: /* Subject Preparation: Additional Optional Procedures */

2022-01-27T14:39:08Z

Subject Preparation: Additional Optional Procedures

← Older revision		Revision as of 10:39, 27 January 2022
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	<br>		<br>

	== Subject Preparation: Additional Optional Procedures ==		== Subject Preparation: Additional (Optional) Procedures ==
	*[[Brainsight Coregistration\| Brainsight Coregistration]]		*[[Brainsight Coregistration\| Brainsight Coregistration]]
			**''We strongly recommend this system of coregistration over the former "photo + AFNI" method. Contact the lab manager to arrange training.''
	*[[Subject Preparation: EEG\| Subject Preparation: EEG]]		*[[Subject Preparation: EEG\| Subject Preparation: EEG]]
	*[[Subject Preparation: EOG \| Subject Preparation: EOG]]		*[[Subject Preparation: EOG \| Subject Preparation: EOG]]

Amnamyst: /* Subject Preparation: Additional Procedures */

2022-01-26T20:04:14Z

Subject Preparation: Additional Procedures

← Older revision		Revision as of 16:04, 26 January 2022
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	<br>		<br>

	== Subject Preparation: Additional Procedures ==		== Subject Preparation: Additional Optional Procedures ==
	*[[Brainsight Coregistration\| Brainsight Coregistration]]		*[[Brainsight Coregistration\| Brainsight Coregistration]]
	*[[Subject Preparation: EEG\| Subject Preparation: EEG]]		*[[Subject Preparation: EEG\| Subject Preparation: EEG]]
	*[[Subject Preparation: EOG \| Subject Preparation: EOG]]		*[[Subject Preparation: EOG \| Subject Preparation: EOG]]
			*[[Subject Preparation: ECG/EKG\| Subject Preparation: ECG/EKG]]

Amnamyst: /* Fiducial Points / Head Coil Placements */

2022-01-20T00:44:30Z

Fiducial Points / Head Coil Placements

← Older revision		Revision as of 20:44, 19 January 2022
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	<br>		<br>
	==Fiducial Points / Head Coil Placements==		==Fiducial Points / Head Coil Placements==
	[[File:MEG_Head_Coils2_cropped.png\|frameless\|~~left~~\|MEG Fiducial Head Coils]]		[[File:MEG_Head_Coils2_cropped.png\|frameless\|right\|MEG Fiducial Head Coils]]
	Fiducial marker coils are used for head localization (the process of locating the subject’s head in space relative to the MEG dewar). The recorded locations are later used to co-register the MEG Head Coordinate System with the MRI Coordinate System for source space analysis.'''		Fiducial marker coils are used for head localization (the process of locating the subject’s head in space relative to the MEG dewar). The recorded locations are later used to co-register the MEG Head Coordinate System with the MRI Coordinate System for source space analysis.'''

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	\|}		\|}
	<br>		<br>

	== Subject Preparation: Additional Procedures ==		== Subject Preparation: Additional Procedures ==
	*[[Brainsight Coregistration\| Brainsight Coregistration]]		*[[Brainsight Coregistration\| Brainsight Coregistration]]

Amnamyst at 00:43, 20 January 2022

2022-01-20T00:43:06Z

← Older revision		Revision as of 20:43, 19 January 2022
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	<br>		<br>

	==Head Size / Fit Test==		==Head Size / Fit Test==
	[[File:MEG_Sizing_Helmet_1_cropped.png\|frameless\|right\|MEG Mock Helmet - Front View]] [[File:MEG_Sizing_Helmet_2_cropped.jpg\|frameless\|right\| MEG Mock Helmet - Side View]]		[[File:MEG_Sizing_Helmet_1_cropped.png\|frameless\|right\|MEG Mock Helmet - Front View]] [[File:MEG_Sizing_Helmet_2_cropped.jpg\|frameless\|right\| MEG Mock Helmet - Side View]]
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	*Determine how the subject will fit inside the dewar helmet:		*Determine how the subject will fit inside the dewar helmet:
	::– Place the MEG mock helmet along with a protective cap over the subject's head.		::– Place the MEG mock helmet along with a protective cap over the subject's head.
	:::• ''Note the fit; if the helmet does not fit (with the coils on and inside the helmet) then the subject is not a good candidate for MEG; if the subject fits then note the amount of space the subject has to move his/her head.''		:::• ''Note the fit; if the helmet does not fit (with the coils on and inside the helmet) then the subject is not a good candidate for MEG. If the subject fits then note the amount of space the subject has to move his/her head.''
	::– Insert Pearltec Head Positioning pads to restrict head movement then re-try the helmet. Please instruct the participant to inflate the positioning pads to a comfortable level. Note: you want the helmet to be tight enough to restrict head movement but not so tight as to cause a headache.		::– Insert Pearltec Head Positioning pads to restrict head movement then re-try the helmet. Please instruct the participant to inflate the positioning pads to a comfortable level. Note: you want the helmet to be tight enough to restrict head movement but not so tight as to cause a headache.
	*Determine how to place the subject's head properly - at the top the dewar helmet.		*Determine how to place the subject's head properly - at the top the dewar helmet.
	::• ''Note how far down over the head the helmet comes as this will give you a general idea of how high up in the dewar the subject can go in order to position the subject's head at the top of the dewar (closest to the sensors at the top of the helmet) without covering the subject's eyes.''		::• ''Note how far down over the head the helmet comes as this will give you a general idea of how high up in the dewar the subject can go in order to position the subject's head at the top of the dewar (closest to the sensors at the top of the helmet) without covering the subject's eyes.''
			<br>

	==Fiducial Points / Head Coil Placements==		==Fiducial Points / Head Coil Placements==
		⚫	[[File:MEG_Head_Coils2_cropped.png\|frameless\|left\|MEG Fiducial Head Coils]]
	~~'''Used~~ for head localization (the process of locating the subject’s head in space relative to the ~~Dewar~~). ~~Used~~ later to co-register the ~~MRI~~ Coordinate System with the ~~MEG Head~~ Coordinate System.'''		Fiducial marker coils are used for head localization (the process of locating the subject’s head in space relative to the MEG dewar). The recorded locations are later used to co-register the MEG Head Coordinate System with the MRI Coordinate System for source space analysis.'''

			'''Procedure:'''
	<div style="text-align: center:">*If the subject has had previous digital pictures of the fiducial points retrieve images to match placement.</div>

	Place a small black dot <u>at 1.5cm up from the nasion (indentation between the forehead and the nose) midline</u>. The dot may be placed slightly higher if the nasion curvature is such that it does not allow level placement of the head coil.
	*Place a small black dot ~~below the left & right preauricular points~~ <u>~~centered at~~ 1.5cm in ~~front~~ of the ~~tragus~~</u>. ~~Measure for accuracy.~~		*Place a small black dot <u>midline, 1.5cm above from the nasion (indentation between the forehead and the nose)</u>.
			*Place a small black dot at the left & right preauricular points, <u>1.5cm from the tragus, on a line between the tragus and the outer canthus of the eye</u>. Measure for accuracy.
	*~~Take~~ a picture of these locations using the HP 715 Digital Camera. ~~Download~~ and print the pictures.		*Record these positions with the Brainsight Neuronavigation unit (if proceeding with Brainsight coregistration. Otherwise, take a picture of these locations using the HP 715 Digital Camera, download and print the pictures.
	*Attach ~~Small~~ ~~(MEG)~~ ~~Adhesive Washers~~ to head localization coils.		*Attach small adhesive washers to head localization coils.
	*Attach head localization coils at the fiducial marks.		*Attach head localization coils at the fiducial marks.
	*Make sure the marks line up with the center of the head coils.		*Make sure the marks line up with the center of the head coils.
	*Place tape over the cables to secure.		*Place Transpore (medical) tape over the cables to secure.

		⚫	'''Head Coil Locations'''
⚫	~~:::~~:{\| class="wikitable"
		⚫	:''*Note: Color coding system may change, dependent on replacement coil supply; all changes will be posted in the MEG Lab for reference.''
		⚫	:{\| class="wikitable" style="text-align: center;"
	\|-		\|-
		⚫	!'''Right Ear'''!!'''Nasion'''!!'''Left Ear'''
	\| <gallery>
⚫	MEG_Head_Coils2_cropped.png\|~~<div align="center">'''~~MEG Fiducial Head Coils~~'''</div>~~
	</gallery>
	\|}


⚫	~~::::~~'''Head Coil Locations'''
	::::{\| class="wikitable"
	\|-		\|-
		⚫	\| Red or Yellow\|\|Blue\|\|Green
⚫	\|'''Right Ear'''\|\|'''Nasion'''\|\|'''Left Ear'''
	\|-
⚫	\| ~~'''~~Red or Yellow~~'''~~\|\|~~'''~~Blue~~'''~~\|\|~~'''~~Green~~'''~~
	\|}		\|}

⚫	''***Color coding system may change, dependent on replacement coil supply; all changes will be posted in the MEG Lab for reference.''

	<br>		<br>

	== Subject Preparation: Additional Procedures ==		== Subject Preparation: Additional Procedures ==
	*[[Brainsight Coregistration\| Brainsight Coregistration]]		*[[Brainsight Coregistration\| Brainsight Coregistration]]

Amnamyst: /* Head Size / Fit Test */

2022-01-20T00:14:43Z

Head Size / Fit Test

@@ Line 29: / Line 29: @@
 ==Head Size / Fit Test==
 <br>
 |-
 |}
 *Determine how to place the subject's head properly - at the top the dewar helmet.
-::::• ''Note how far down over the head the helmet comes as this will give you a general idea of how high up in the dewar the subject can go in order to position the subject's head at the top of the dewar (closest to the sensors at the top of the helmet) without covering the subject's eyes.''
+::• ''Note how far down over the head the helmet comes as this will give you a general idea of how high up in the dewar the subject can go in order to position the subject's head at the top of the dewar (closest to the sensors at the top of the helmet) without covering the subject's eyes.''
 ==Fiducial Points / Head Coil Placements==

Amnamyst: /* Subject Preparation: De-metaling */

2022-01-19T20:51:00Z

Subject Preparation: De-metaling

← Older revision		Revision as of 16:51, 19 January 2022
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	== Subject Preparation: De-metaling ==		== Subject Preparation: De-metaling ==
	Before entering the MSR (Magnetically Shielded Room) subjects '''must''' remove any metal from their person.<br>		Before entering the MSR (Magnetically Shielded Room) subjects '''must''' remove any metal from their person.<br>
	There are no known risks associated with MEG recordings. Although wearing metal objects while in the MSR is not harmful to the individual, bringing metallic or magnetic objects into the MSR causes interference and high noise levels in the recording. *It is recommended that subject are screened and given instructions before arriving for testing. However, if subjects arrive with metal on their clothing that can not be easily removed, they must change into scrubs, which are available for all participants in the NMR Center changing room.<br>		There are no known risks associated with MEG recordings. Although wearing metal objects while in the MSR is not harmful to the individual, bringing metallic or magnetic objects into the MSR causes interference and high noise levels in the recording.<br>

	'''Please use the [[Media:MEG Screening Questionnaire.pdf\| MEG Screening Questionnaire]] when scheduling participants. <br>'''		'''Please use the [[Media:MEG Screening Questionnaire.pdf\| MEG Screening Questionnaire]] when scheduling participants. <br>'''
			It is recommended that subject are screened and given instructions before arriving for testing. However, if subjects arrive with metal on their clothing that can not be easily removed, they must change into scrubs, which are available for all participants in the NMR Center changing room.

			<br><br>
	*Subjects must remove:		'''All subjects must remove:'''
	:*Bras with metal underwires, clasps or hooks.		:*Bras with metal underwires, clasps or hooks.
	::''Note: Some sports bras may have powder coated metal connections which look and feel like plastic. You can use the metal scanner in the NMR Center changing room to check any questionable elements.''		::''Note: Some sports bras may have powder coated metal connections which look and feel like plastic. You can use the metal scanner in the NMR Center changing room to check any questionable elements.''
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	:*Credit Cards		:*Credit Cards
	:*Small metal objects such as hair pins, paper clips, safety pins, etc.		:*Small metal objects such as hair pins, paper clips, safety pins, etc.
	*Additionally, everyone entering the MSR must also remove their shoes or use protective booties to prevent magnetic dust from getting into the MSR.		Additionally, '''everyone entering the MSR''' must also remove their shoes or use protective booties to prevent magnetic dust from getting into the MSR.

	<br>		<br>

← Older revision		Revision as of 09:53, 12 June 2025
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	*[[Subject Preparation: EOG \| Subject Preparation: EOG]]		*[[Subject Preparation: EOG \| Subject Preparation: EOG]]
	*[[Subject Preparation: ECG/EKG\| Subject Preparation: ECG/EKG]]		*[[Subject Preparation: ECG/EKG\| Subject Preparation: ECG/EKG]]
			*[[Subject Preparation: Corrective Lenses\|Subject Preparation: Corrective Lenses]]