Philips 3T Achieva
Visual Cortex
fMRI brain scan BOLD
MONK
RF signal
audiotone
juicecontroller
juicedispenser
solenoidEMG
neuronAP
fMRI BOLD
visualtask
IRcamera
CPUCortex/LabView
monitor
• Non-human primate of choice:
• anatomical & physiological likeness
• ease of maintaining & breeding in captivity
• No harm / minimize discomfort
• IACUC (Institutional Animal Care and Use Committee)
• IRB (Institutional Review Board) approval
• Ethics Research Training (exam #1102055)
Wim Vanduffel (2001)
Mark Pinsk (2004)
Crist Instruments (current)
Improvements: mechanical design, materials selection, audio reinforcement, component
integration
General Property ASTM Test Typical Value
Specific Gravity D792 1.2
Tensile Strength Yield D638 8,900 - 9,000
Tensile Modulus D638 340,000
Izod Impact - Notched D256 12-16
Hardness - Rockwell D785 M70
Deflection Temp @ 264psi D648 270
Deflection Temp @ 66 psi D648 280
Co. Thermal Expansion D696 3.7X10-5
General Property ASTM Test Typical Value
Specific Gravity D792 1.19
Tensile Strength Yield D638 10,000
Tensile Modulus D638 400,000
Izod Impact - Notched D256 0.4
Hardness - Rockwell D785 M94
Deflection Temp @ 264psi D648 210
Deflection Temp @ 66 psi D648 239
Co. Thermal Expansion D696 3.4X10-5
Polycarbonate material properties
Acrylic material properties
Max. Available Diameter Polycarbonate Acrylic
Applied Plastics Co 8” 8”
Industrial Plastic Supply, Inc 4” 24”
Inplex LLC 3.5” n/a
McMaster-Carr** 8” (± .04) 18” (± .08)
Modern Plastics 8” (± .03) 6”
Scandia Plastics Inc 8” n/a
US Plastics 4” 12”
Tubing Availability
**preferred company
CAST ACRYLIC (LUCITE) TUBE
outside diameter: 15”16” 18”
Length 24"Length Tolerance +.25"Inside Diameter 14-3/4"Outside Diameter 15"Outside Diameter Tolerance ±.08"Wall Thickness .125"Wall Thickness Tolerance ±.02"Acrylic Material Cast AcrylicPart No. 84865K317
Cost: $311.42
Length 24"Length Tolerance +.25"Inside Diameter 15-1/2"Outside Diameter 16"Outside Diameter Tolerance ±.08"Wall Thickness .25"Wall Thickness Tolerance ±.025"Acrylic Material Cast AcrylicPart No. 84865K418
Cost: $438.64
Length 48"Length Tolerance +.25"Inside Diameter 15-1/2"Outside Diameter 16"Outside Diameter Tolerance ±.08"Wall Thickness .25"Wall Thickness Tolerance ±.018"Acrylic Material Cast AcrylicPart No. 84865K438
Cost: $871.70
Length 48"Length Tolerance +.25"Inside Diameter 17-1/2"Outside Diameter 18"Outside Diameter Tolerance ±.08"Wall Thickness .25"Wall Thickness Tolerance ±.018"Acrylic Material Cast AcrylicPart No. 84865K439
Cost: $884.35
Length 24"Length Tolerance +.25"Inside Diameter 17-1/2"Outside Diameter 18"Outside Diameter Tolerance ±.08"Wall Thickness .25"Wall Thickness Tolerance ±.025"Acrylic Material Cast AcrylicPart No. 84865K419
Cost: $444.95
Source: www.mcmaster.com
grate/perforated slab of steel or aluminum
disposable, removable lining across bottom
vertices glued and waterproof
recessed ¼”, 20 thread screws
rapid prototyping
machine
¼”, 20 thread, nylon screws
aluminum, brass, plastic stainless steel
appr
oxim
ate
piano hinge along tube (?)
= isocenter, 23.255cm from base
Philips 3T Achieva
8.255
45.72
15.00
26.942
23.255
3.969
41.751
NOT DRAWN TO SCALE
Based on our measurements of the bohr…
Tube (15” diameter) radius = 19.05cm
Tube (16” diameter) radius = 20.32cm
Tube (18” diameter) radius = 22.86cm
Philips 3T Achieva
NOT DRAWN TO SCALE
Philips 3T Achieva
NOT DRAWN TO SCALE
Units = inches
Units = inches
Units = inches
• Mechanical design model, checking with Princeton
• Macaque measurements: 6.5-8.5kg, 28-32” prone
• Chair: landmark, loading, attach
• chair weight• final design revisions• machine the chair
• Mock scanner environment• Monkey training• RF coil selection & construction• Functional components: QFDs & selection