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Example of wideband protocol with different phase shifts (positive, zero, and negative) and resultant device artifact using a phantom model with the CRT-D (top), S-ICD (middle), and TV-ICD (bottom) devices. Phantom image without the device is shown on the left for comparison. CRT-D = cardiac resynchronization therapy device; ICD = implantable cardioverter-defibrillator; S-ICD = subcutaneous ICD; TV-ICD = transvenous ICD.
