PIXImus Mouse Densitometer
Sales, accessories, service and
support at:
Inside Outside Sales LLC
5769 North Hill Ct.
Fitchburg WI 53711
Call Don Settergren at
608-698-2663
don@piximus.com
Academic and
pharmaceutical researchers commonly use small animals as subjects for
investigations of genetics, cellular physiology, and of agents affecting bone
or soft-tissue composition. Bone densitometry and body composition measurement
using dual-energy x-ray absorptiometry (DEXA),
eliminate the need for destructive chemical analysis – a time-and
labor-consuming process that requires days or weeks to complete. Bone
densitometry allows the researcher the opportunity to make multiple
measurements in situ during the life of the animal. Unfortunately, DEXA
densitometers using rectilinear scanning require as much as 30 minutes for a
total body acquisition with relatively poor precision (>5%) and spatial
resolution (>0.5mm). The long process requires careful sedation techniques and
often endangers animal safety. The PIXIMUS Densitometer provides bone mineral
and body composition results from total body imaging in under 5 minutes. Fast
imaging allows use of milder sedation that is safer on animals.
The PIXIMUS allows accurate and precise measurement of bone
and tissue for small animals 10-50 g (e.g., mice, lemmings). This measured bone
exhibits excellent correlation to total ashed weight
(r=0.99)1.
PIXImus uses a lower x-ray energy than that used for peripheral densitometry in
humans in order to achieve contrast in the extremely low density bone.
Excellent precision of BMD and %Fat makes PIXIMUS ideal for longitudinal
studies. The standard total body focuses on the active bone area in the subcranial region. There are manual ROI’s for selected
regions within the total body image, such as spine and femur.
1. Data courtesy of T.R. Nagy , Ph.D. University of Alabama-Birmingham
Specifications:
Time: <5 minutes/acquisition
Pixel
Size: 0.18 x 0.18 mm
Image
Area: 80 x 65 mm
Animal
Size: 10 - 50 grams
Total Body BMD precision: SD 0.075 mg/cm2, CV 1.5% @ 50 mg/cm2
Total Body %Fat precision: 1% Fat, 5% @ 20% Fat
Location
of ROIs: Subcranial total body Manual ROIs for spine, femur and custom
applications
Results: Bone Mineral Density (BMD) in mg/cm2,
Bone Mineral Content (BMC), in mg, Bone area in cm2, %Fat, Lean tissue in
grams, Fat tissue in grams
Positioning:
Custom positioner
for animal, immobilization, disposable to reduce contamination
X-ray
Geometry: Cone beam,
Stationary area detector
Computer:
Portable Notebook
X-ray
Tube/Generator: Stationary
anode, 0.3 mm focal spot, Dual-energy supply, 80/35 kVp
@ 500μA
Physical
Dimensions: 30W x
63D x 33H cm (12 x 25 x 13 in), <27 kg (59 lb)
Power/Environment:
110-120 VAC (±10%),
5A, 60Hz (±2Hz), 200-240 VAC (±10%), 2.5A, 50Hz (±2Hz), 18-27 °C (64-81 °F)
operating temp.
Note: the PIXIMUS densitometer is for
investigational use in laboratory animals or other tests that do not involve
human subjects.
Specifications
subject to change without notice. LUNAR and PIXI are trademarks of GE Lunar
Corporation.
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