Multisection^WO & W contrast IV:Find:Pt:Head>Brain && Head>Head vessels:Doc:CT.perfusion && CT.angio
multisection^wo & w contrast iv:find:pt:head>brain && head>head vessels:doc:ct.perfusion && ct.angio
CT Head WO contrast and CT Brain for perfusion W contrast IV and CT angiogram Head vessels W contrast IV
ct head wo contrast and ct brain for perfusion w contrast iv and ct angiogram head vessels w contrast iv