Acquisition Protocols and Correction Methods for Estimation of the Heart-to-Mediastinum Ratio in ¹²³I-Metaiodobenzylguanidine Cardiac Sympathetic Imaging

Abstract

The use of an LME collimator appears to be acceptable for cardiac (123)I-MIBG imaging as an alternative to an ME collimator, and the application of a 15% energy window is recommended when an LME collimator is used. Empiric correction is also expected to improve exchangeability between H/M ratios calculated with ME and LME collimators. Neither the use of an LEHR collimator nor the use of IDW correction is recommended.