| photomechanical | Pertaining to, or designating, any photographic process in which a printing surface is obtained without the intervention of hand engraving. Source: Websters Dictionary (01 Mar 1998) |
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| ablation | 1. A carrying or taking away; removal. 2. <medicine> Extirpation. 3. <geology> Wearing away; superficial waste. See: tolerate. Origin: L. Ablatio, fr. Ablatus p. P. Of auferre to carry away; ab + latus, p. P. Of ferre carry: cf. F. Ablation. (11 Mar 1998) |
| catheter ablation | Removal of tissue with electrical current delivered via electrodes positioned at the distal end of a catheter. Energy sources are commonly direct current (dc-shock) or alternating current at radiofrequencies (usually 750 khz). The technique is used most often to ablate the av junction and/or accessory pathways in order to interrupt av conduction and produce av block in the treatment of various tachyarrhythmias. (12 Dec 1998) |
| electrode catheter ablation | A method of ablating the site of origin of arrhythmias whereby high energy electric shocks are delivered by intravascular catheters. (05 Mar 2000) |