+ Diagnosing SAH – CT/LP vs. CT/CTA. Fernanda Bellolio vs. Bill Knight Phoebe Adams, August 16, 2018August 16, 2018, The Talks DASsmacc, CT/CTA, CT/LP, debate, 0 Debate: diagnosing Subarachnoid Haemorrhage: CT/LP vs. CT/CTA. Fernanda Bellolio vs Bill Knight.