**11.1. Intracardiac echocardiography**

Intracardiac echocardiography (ICE) has the potential to provide better image quality than TEE due to its use of higher frequency ultrasound in close proximity to the right-sided cardiac structures. Narducci et al. [79] directly compared the two modalities, with ICE detecting more intracardiac masses than TEE (**Table 4**).

Consider using ICE, particularly in CDRIE where TEE is inconclusive or discordant with clinical findings. Although ICE is considered a safe procedure [131, 132], its routine use is limited by cost. Future applications include the use of 3D ICE and electroanatomic mapping [131].
