Arrays for longitudinal delivery of TTFields to a body

A kit of electrodes for treating a target region in a subject's body with Tumor Treating Fields (TTFields), the target region being located in a portion of the subject's body that has a longitudinal axis, the kit comprising:

• a first plurality of capacitively coupled electrodes wired together in parallel, in series, or in a parallel/series combination;
• a first band-shaped substrate configured to hold the first plurality of electrodes against the subject's body so that the first plurality of electrodes surrounds a first part of the subject's body at a position that is longitudinally prior to the target region;
• a second plurality of capacitively coupled electrodes wired together in parallel, in series, or in a parallel/series combination;
• a second band-shaped substrate configured to hold the second plurality of electrodes against the subject's body so that the second plurality of electrodes surrounds a second part of the subject's body at a position that is longitudinally subsequent to the target region;
• a third plurality of capacitively coupled electrodes wired together in parallel, in series, or in a parallel/series combination;
• a third substrate configured to hold the third plurality of electrodes against the subject's body on a first side of the target region, at a position that is longitudinally between the first plurality of electrodes and the second plurality of electrodes;
• a fourth plurality of capacitively coupled electrodes wired together in parallel, in series, or in a parallel/series combination;
• and
• a fourth substrate configured to hold the fourth plurality of electrodes against the subject's body on a second side of the target region that is opposite to the first side, at a position that is longitudinally between the first plurality of electrodes and the second plurality of electrodes.