Citation Hunt

The Wikipedia snippet below is not backed by a reliable source. Can you find one?

Click I got this! to go to Wikipedia and fix the snippet, or Next! to see another one. Good luck!

In page Arterial input function:

This text has been unreferenced on Wikipedia for a very long time. If you can't find a source, be bold and remove it!

"

However, Blake et al.[5] derived a semi-population based method from healthy postmenopausal women imaged using [18F]NaF for bone studies[5] based on the observation that the later part of the arterial input function can be constructed from the venous blood samples, as the venous and arterial blood concentration of tracer is equal 30 minutes after the injection. They derived the peak of the curve from a previous study that obtained continuous arterial sampling, and the later part of the curve from the venous blood samples of the individual patient in whom an AIF is to be estimated. When combined, a semi-population based arterial input function is obtained as a result.[citation needed]