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MRI Quality
Assurance Phantoms
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MRI Multipurpose Phantom*
Nuclear Associates Model 76-903 |
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Conic section
insert |
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Five-section insert
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Provides a comprehensive
range of tests in one compact
unit...
• Slice thickness
• MTF evaluation
• Spatial resolution
• RF signal uniformity
• Magnetic field homogeneity
• And many others
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The MRI Multipurpose Phantom monitors the overall performance
of an MRI system. The parameters that can be measured include:
slice thickness, slice orientation, interslice gap, magnetic field
homogeneity, radio frequency signal uniformity, spatial resolution
in positive and negative contrast, and modulation transfer function.
The phantom can also be used to evaluate quadrature setting,
baseline correction, aspect ratio, and single T1 and T2 values.
The phantom is constructed of non-magnetic
materials. It is 9
inches in diameter, with two inserts, and is designed to be filled
with an MRI signal-producing solution. One insert is a series of
concentric conic sections. The other insert is made up of five
sections: one for positive contrast, two for slice evaluation, one
for
MTF evaluation, one for T1 and T2 evaluations.
A void between the sections provides a fully
flooded area for
signal uniformity.
Specifications
Standard configuration
Phantom dimensions
OD is 9 x 4.5 in (t)
Weight 6.82 lb (3.09 kg)
Optional accessories
Copper Sulfate, 1 gm/l
(Model 76-903-7000)
Available model(s)
76-903
MRI Multipurpose Phantom
This Phantom does not ship with Copper Sulfate,
if you require Copper Sulfate please order it
as an optional item!
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3D
Slice Thickness/High Contrast Resolution Phantom (AAPM)
Model 76-908 |
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Accurately evaluates:
• High-contrast resolution
• Slice thickness
• Gradient strength
• Slice position/separation
• Resonance frequency
• Designed to conform to
AAPM MRI
specifications*
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Various sections are arranged within
a cubical
shape to make the phantom truly three dimensional. It contains slice
thickness
measuring sections, and a void between the
inserts to allow for a signal-producing
solution. Slice thickness and resolution
information can be obtained in all three
directions (transaxial, coronal, and sagittal)
without moving the phantom.
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Specifications
Dimensions 6 x 6 x 5
in (15.24 x 15.24 x 12.70 cm)
Weight 3.46 lb (1.56 kg)
Optional accessories
Copper Sulfate, 1 gm/l
(Model 76-903-7000)
Available model(s)
76-908 3D Slice Thickness/High Contrast Resolution Phantom
(AAPM)
This Phantom does not
ship with Copper Sulfate,
if you require Copper Sulfate please order it
as an optional item!
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Uniformity/Linearity Phantom (AAPM)
Model 76-907
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Accurately evaluates:
• Spatial linearity
• Image artifact
• Signal-to-noise
• Resonance frequency
• Quadrature error
• Designed to conform to AAPM MRI
specifications*
Specifications
Dimensions 13 x 13 x 4 in (33.02 x 33.02 x 10.16 cm)
Weight 11.68 lb (5.30 kg)
Optional accessories
Copper Sulfate, 1 gm/l (Model 76-903-7000)
Available model(s)
76-907 Uniformity/Linearity Phantom (AAPM)
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This large, flat flood phantom can be filled
with an MR signal-producing solution. The
square grid section contains orientation
reference markers, and the flood section
has an image artifact cylinder.
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* These phantoms conform to the AAPM Specifications contained in the
report: “Quality Assurance Methods and Phantoms for Magnetic
Resonance Imaging, ”issued by the AAPM NMR Task Group No. 1 (article
appeared in Medical Physics, 17:2 (Mar/Apr 1990). This report has
also been co-sponsored by the American College of Radiology MR
Committee on Imaging Technology and
Equipment.
This Phantom does not ship with Copper Sulfate,
if you require Copper Sulfate please order it
as an optional item!
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MRI Surface Coil
Phantom*
Nuclear Associates Model
76-904 |
- Specifically designed for
comprehensive testing of
surface coils
- Provides proper geometry
not found in conventional
head or body phantoms
Star pattern insert
Square grid insert
Five-section insert
Accurately
evaluates:
• High spatial resolution
• RF signal brightness profile
• Slice thickness
• Slice to slice gap
• MTF evaluation
• Magnetic field uniformity
• Gradient linearity
• Image artifacts
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The use of surface coils in
Magnetic Resonance Imaging (MRI) has become an important part of the
clinical operations in most MR facilities. Surface coils are
preferred in some MR studies, in part, because their use can
minimize motion artifacts, obtain high signal-to-noise ratio in the
areas closer to the surface, and obtain high resolution images of
smaller areas of interest.
This phantom was specifically
designed for acceptance testing and routine QC of surface coils. It
provides the proper geometry not found in conventional head or body
phantoms.
The phantom is constructed of
non-magnetic Plexiglas®. It is rectangular in shape, contains three
inserts, and is designed to be filled with an MRI signal-producing
solution. The void between
the inserts provides a fully flooded area.
Specifications
Outer dimensions 13 (w) x 6 (d) x 6.875 in (h)
(33.02 x 15.24
x 17.46 cm)
Inner dimensions 12 (w) x 5 (d) x 6 in (h)
(30.49 x 12.7 x
15.24 cm)
Weight 7.96 lb (3.61 kg)
Optional accessories
Copper Sulfate, 1 gm/l (Model 76-903-7000)
Available model(s)
76-904 MRI Surface Coil Phantom
This Phantom does not ship with Copper Sulfate,
if you require Copper Sulfate please order it
as an optional item!
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