The main goal of this paper is to put forward a methodology for the measurement of product innovations using a value metric, i.e., equating the "magnitude" of innovations with the welfare gains that t

NBER1985-10-01 更新60

CT data - A comprehensive assessment of physical image quality of five different scanners for head CT imaging as clinically used at a single hospital centre – a phantom study

成像质量评估

CT设备

CT images of the Catphan 504 phantom.

NIAID Data Ecosystem50