Changes at CG&A

Chromogranin A (CgA) References

"There appears to be a direct correlation between tumor burden and serum CgA levels. Rising serum levels of CgA can predeed radiographic evidence of recurrence. . . . .Using serum CgA level above 30 U/ml, one is able to discriminate between disease free patients and those with recurrent metastatic disease with a sensitivity of 92% and specificity of 96%. This is superior to measuring urinary 5-...

Cga-LoD – Developer Documentation

Chromogranin A (CgA) in adrenal tumours Chromogranina A (CgA) w guzach nadnerczy

Introduction: Adrenal tumours can produce specific hormones and cause characteristic symptoms. The majority of adrenal incidentalomas are clinically silent, but some may be malignant or pose other potential threats to life. Chromogranin A (CgA) is the main, nonspecific marker of neuroendocrine tumours (NET). In the adrenals, CgA is produced by chromaffin cells localised in the adrenal medulla. ...

Lightlike infinity in CGA models of Spacetime

This paper discusses a 7 dimensional conformal geometric algebra model for spacetime based on the notion that spacelike and timelike infinities are distinct. I show how naturally of the dimensions represents the lightlike infinity and appears redundant in computations, yet usefull in interpretation.

Optical parametric generation in CGA crystal

We have demonstrated optical parametric generation (OPG) in CGA crystal known for its extremely high secondorder nonlinearity (236 pm/V). A single-pass OPG was pumped by 10 lJ, 600 fs pulses at k 1⁄4 5 lm and the output was tunable in the 7–18 lm range. Efficient second harmonic generation of 9–11 lm radiation with an internal conversion efficiency of 62% has also been demonstrated. 2002 Elsevi...