The red line indicated HR-CTV, The green shadow indicated the intersection of ring1 and bladder, the blue shadow indicated the intersection of ring2 and bladder. The yellow shadow indicated the intersection of ring3 and bladder. The purple shadow indicated the intersection of ring4 and bladder. The sky blue shadow indicated the intersection of ring5 and bladder. The lavender shadow indicated the intersection of ring6 and bladder. The orange shadow indicated the intersection of ring7 and bladder. The forest shadow indicated the intersection of ring8 and bladder. The slate blue shadow indicated the intersection of ring9 and bladder.