def get_stent_orientation(R1, R2):
    (R1, R2) = (np.asarray(R1), np.asarray(R2))
    (R1, R2) = (PointSet(R1), PointSet(R2))
    (R1_ant, R1_post, R1_left, R1_right) = (R1[0], R1[1], R1[2], R1[3])
    (R2_ant, R2_post, R2_left, R2_right) = (R2[0], R2[1], R2[2], R2[3])
    refvector = [0, 0, 10]
    angle = (R1_ant - R2_ant).angle(refvector)
def get_stent_orientation(R1, R2):
    (R1, R2) = (np.asarray(R1), np.asarray(R2))
    (R1, R2) = (PointSet(R1), PointSet(R2))
    (R1_ant, R1_post, R1_left, R1_right) = (R1[0], R1[1], R1[2], R1[3])
    (R2_ant, R2_post, R2_left, R2_right) = (R2[0], R2[1], R2[2], R2[3])
    refvector = [0, 0, 10]
    angle = (R1_ant - R2_ant).angle(refvector)