123I-MIBG cardiac imaging is a method of myocardial adrenergic receptor imaging using 123I-labeled norepinephrine analogs, which can be performed with SPECT.
123I-MIBG cardiac imaging is a cardiac receptor imaging test in which the heart is affected by both sympathetic and parasympathetic nerves, and the nerve endings release neurotransmitters that act on the receptors, with the sympathetic endings releasing norepinephrine to act on the adrenergic receptors.
SPECT imaging by intravenous injection of radioactive 123I-labeled norepinephrine analogs can clarify the density and distribution of bound receptors, thus obtaining the in vivo distribution of sympathetic receptors in the myocardium and reflecting myocardial blood perfusion. It is important in the diagnosis of early acute myocardial infarction, congestive heart failure, and primary hypertrophic cardiomyopathy.
If 123I-MIBG cardiac imaging is needed, it is recommended to go to a specialized hospital for consultation and further treatment under the guidance of a doctor.