Any simulation model should be validated, especially in terms of spatial resolution, count rates, scatter fraction and sensitivity in the case of positron emission tomography (PET) systems.
Unfortunately, as MRI2 is a relatively new concept its prognostic value has not been validated, especially because it is done only in a subset of patients and with different protocols.
Furthermore, the questionnaire had not been validated in India, and it was especially difficult to capture any association with staple foods like rice, which are eaten daily by the majority of the population, and with food groups which are eaten rarely (e.g, apples or pears and citrus fruit) or as ingredients of complex recipes (e.g, meat, green vegetables).
These formulas have been validated in renal disease, and give a reasonably accurate estimation of GFR, especially in patients with chronic kidney disease and renal function impairment.
In this study, dideoxy-sequencing was used as a reference for mutation assessment in order to validate the results obtained by Q-PCR assays, especially KRAS-TMGB that had not previously been validated in the diagnostic setting.
"It has neither been validated nor studied in depth.
However, these statements have not been validated for regular use in evaluating health system governance especially in rural settings were the concepts of governance may be less clear.
Since the release of the model by Itasca, it has not been validated for fluid flow application in porous media, especially in case of petroleum reservoir.
MRI has been proposed for non-invasive detection and quantification of liver iron content, but has not been validated as a reproducible and sensitive method, especially in patients with mild iron overload.
Computed tomography (CT) has been validated for the diagnosis of axial SpA, especially when there are structural changes in the SI joint [ 13, 14].
