Can liver fibrosis be measured in patients with hiv/aids?

Probably. Hiv/aids by it self is not a main cause of liver damage; however there are patients who are co-infected with hepatitis c, which in turn can cause liver injury, an ultrasound of the liver may indicate fibrosis but a biopsy can confirm the diagnosis; certain medications against hiv/aids may also cause liver damages ( niverapine).
Yes. If your referring to hep c and hiv. There is a relatively new test called the hep c fibrosure. This circumvents liver biopsy (unless cancer is suspected). It gives a precise score corresponding to a level of liver fibrosis.