Tissue ablation probes and methods of using tissue ablation probes are provided. Each tissue ablation probe comprises an electrically conductive probe shaft, at least one tissue ablation electrode carried by a distal end of the probe shaft, and one or both of an insulative element and an echogenic element. The insulative element and/or the echogenic element may, e.g., be affixed to, or selectively removable from, the probe shaft to increase the insulative capability and echogenicity of the probe. An echogenic sheath having the insulative element and/or the echogenic element may be slidably disposed over the probe shaft to impart insulative and echogenic properties to the probe shaft.
