Table II. Sensitivity and specificity of computed tomography measures. AD, Alzheimer's disease; CERAD, CERAD (Consortium to Establish a Registry for Alzheimer Disease) probable or definite AD (neuropathology); NINCDS, NINCDS (National Institutes of Neurological, Communicative Disorders and Stroke) probable AD (clinical); MTL, mesial temporal lobe; PTC, parietotemporal cortex; rCBF, regional cerebral blood flow; M, measurement; I, impression.

	No. AD subjects	No. controls	Measurement/impression	Sensitivity	Specificity	Diagnostic criteria
Jebst et al,14 l998	200	119 normal	(M) MTL width	0.85	0.78	CERAD
Jobst et al,14 1998	200	119 normal	(M) MTL width	0.80	0.93	CERAD
			(I) PTC rCBF
Denihan et al,28 2000	60	40 other	(M) MTL width	0.75	0.90	NINCDS