Precedence 6
Precedence 6 is a lab equipment product from Philips. It is designed for routine laboratory tasks. The core function of Precedence 6 is to provide consistent and reliable performance in a laboratory setting.
Lab products found in correlation
3 protocols using precedence 6
SPECT/CT Imaging of Radioiodinated Compounds in MI Rats
Comparison of State-of-the-Art SPECT/CT Systems
Characteristics of all used SPECT/CT systems with LEHR collimator
System | Discovery NM/CT 670 Pro | Precedence 6 | Symbia Intevo 6 | Symbia T16 |
---|---|---|---|---|
Detector crystal | 3/8” NaI | 3/8” NaI | 3/8” NaI | 3/8” NaI |
PMT* | 59 | 55 | 59 | 59 |
FOV* | 40 × 54 cm | 38.1 × 50.8 cm | 38.7 × 53.3 cm | 38.7 × 53.3 cm |
Hole shape | Hexagonal | Hexagonal | Hexagonal | Hexagonal |
Number of holes (× 1000) | Not specified | 86.4 | 148 | 148 |
Collimator hole diameter | 1.50 mm | 1.40 mm | 1.11 mm | 1.11 mm |
Hole length | 35 mm | 32.8 mm | 24.05 mm | 24.05 mm |
Septal thickness | 0.2 mm | 0.152 mm | 0.16 mm | 0.16 mm |
Sensitivity for 99mTc @ 10 cm | 72 cps/MBq | 66 cps/MBq | 91 cps/MBq | 91 cps/MBq |
Septal penetration @ 140 keV | 0.3% | 1.3% | 1.5% | 1.5% |
Planar resolution† | 7.4 mm | 7.4 mm | 7.5 mm | 7.5 mm |
SPECT central resolution† | 6.4 mm | 4.4 mm | 4.4 mm | 4.4 mm |
SPECT peripheral radial resolution† | 5.7 mm | 4.2 mm | 4.0 mm | 4.0 mm |
SPECT peripheral tangential resolution† | 5.1 mm | 4.3 mm | 3.9 mm | 3.9 mm |
* (C)FOV (center) field of view, PMT photomultiplier tube
† Spatial resolution without scatter (LEHR collimator at 10 cm, (full width at half maximum (FWHM) in CFOV [mm], 3/8” crystal)
Noninvasive Cardiac Imaging in Myocardial Infarction
After the scan of SPECT/CT, rats were immediately sacrificed and organs of interest were collected, weighed, and counted for radioactivity as described above. The hearts isolated from rats with MI were rinsed with saline and cut into slices of 2 mm in the axial plane. After incubation in 2 % triphenyltetrazolium chloride (TTC) solution at 37 °C for 15 min, the TTC-stained slices were digitally photographed and then cut into 30-μm slices for autoradiography studies as described above.
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