An apparatus (110, 1100, 1400, 1700) for positioning a light delivery head (1120, 1720, 1820) of a therapeutic treatment device in proximity to a body part having a target treatment region, the apparatus (110, 1100, 1400, 1700) comprising: a positioner comprising: a receptacle defining an at least partially enclosed volume configured to receive at least a portion of the delivery head (1120, 1720, 1820), the receptacle having a treatment delivery surface comprising: a light transmitting region which is at least partially transparent to therapeutic light from the treatment head, wherein the light transmitting region is transparent to therapeutic light having a wavelength of 870 nm or 930 nm and semi-transparent to light at visible wavelengths, and a light shielding region which is relatively less transparent to the therapeutic light than the light transmitting region; a fixation facility which affixes the receptacle to the body part such that the light transmitting region of the treatment delivery surface is adjacent to the target treatment region; a digital memory; and a communication link configured to selectively couple the memory to the treatment device. a positioner comprising: a receptacle defining an at least partially enclosed volume configured to receive at least a portion of the delivery head (1120, 1720, 1820), the receptacle having a treatment delivery surface comprising: a light transmitting region which is at least partially transparent to therapeutic light from the treatment head, wherein the light transmitting region is transparent to therapeutic light having a wavelength of 870 nm or 930 nm and semi-transparent to light at visible wavelengths, and a light shielding region which is relatively less transparent to the therapeutic light than the light transmitting region; a fixation facility which affixes the receptacle to the body part such that the light transmitting region of the treatment delivery surface is adjacent to the target treatment region; a digital memory; and a communication link configured to selectively couple the memory to the treatment device. a receptacle defining an at least partially enclosed volume configured to receive at least a portion of the delivery head (1120, 1720, 1820), the receptacle having a treatment delivery surface comprising: a light transmitting region which is at least partially transparent to therapeutic light from the treatment head, wherein the light transmitting region is transparent to therapeutic light having a wavelength of 870 nm or 930 nm and semi-transparent to light at visible wavelengths, and a light shielding region which is relatively less transparent to the therapeutic light than the light transmitting region; a light transmitting region which is at least partially transparent to therapeutic light from the treatment head, wherein the light transmitting region is transparent to therapeutic light having a wavelength of 870 nm or 930 nm and semi-transparent to light at visible wavelengths, and a light shielding region which is relatively less transparent to the therapeutic light than the light transmitting region; a fixation facility which affixes the receptacle to the body part such that the light transmitting region of the treatment delivery surface is adjacent to the target treatment region; a digital memory; and a communication link configured to selectively couple the memory to the treatment device.