The phrase "quantification is required" is correct and usable in written English
You can use it in contexts where you need to emphasize the necessity of measuring or counting something.
Example: "In order to proceed with the analysis, quantification is required to ensure accurate results."
Alternatives: "measurement is necessary" or "counting is essential."
Quantification is required from RNA or DNA viral genomes extracted.
In order to achieve a reliable dosimetry, accurate and precise activity quantification is required.
The RMSE of land surface temperature is assumed as 3 K in this study, although precise quantification is required in the future.
However, if the spatial distribution of the underlying lung disease is unknown, or if lung perfusion quantification is required for an entire lung (e.g. to assess side differences of lung perfusion) a measurement of a limited lung sample in a small ROI will only reflect a poor estimate of lung perfusion.
However, more precise quantification is required.
Deep inspiration chest CT scans should not be used for attenuation correction when PET quantification is required or intended.
Both their identification and quantification are required for quality control and regulation purposes.
In these cases, artificial mucus may be used to supplement cell-based models but still proper identification and quantification are required.
As both the mean amplitude and mean SNR for each calcium transient, which we quantified above (Figs 2F and G, and 4C and D), included different numbers of APs/transient, further quantification was required to compare the true performance of these indicators.
A minimum of two valid quantifications was required in either GA149-GFP or GFP quadruplicates.
While qualitative descriptions of impacts is informative, a move towards quantification of impacts is required to facilitate robust numerical estimation of risk (Wilson et al. 2012a; Jenkins et al. 2014b; Wilson et al. 2014; Brown et al. 2015).
