Table 8.

Covariance and gradient matrices used to calculate random (fitting) component of uncertainty in cumulated activity for liver and pancreatic lesions

	Covariance matrix Vp	Gradient matrix gp	Fractional standard uncertainty in $\tilde{A}$ (%)
Liver lesion	$\left[\begin{array}{cc}26.1& 3.77\times {10}^{-2}\\ 3.77\times {10}^{-2}& 6.91\times {10}^{-5}\end{array}\right]$	$\left[\begin{array}{c}39.00\\ -29722\end{array}\right]$	15.1
Pancreatic lesion	$\left[\begin{array}{cc}0.0240& 4.66\times {10}^{-6}\\ 4.66\times {10}^{-6}& 1.15\times {10}^{-9}\end{array}\right]$	$\left[\begin{array}{c}42.0\\ -2.49\times {10}^5\end{array}\right]$	0.1