Ladycyan,
Namaste...
:-)
In "Reiki Master's Manual" by William Rand, he gives instructions on a "Healing Attunement". It's basically an attunement without symbols being placed into the hands, thus not initiating the person to Reiki.
The claim is that it brings in higher frequency healing energies "which are more powerful and effective than those given during a regular Reiki session" as per his book.
It encourages the recipient to be very participatory in focusing on the area of concern and use some visualization in setting intentions to let go of blocks that they may be having in their healing. This is done in preparation of the attunement.
I have not used this technique. I would think if a recipient were having trouble letting go of blocks and requested "something else" to be done for them, I'd suggest it, but ultimately the recipient does that work and I would help as I could.
It can also be used, as per instructions, to remove negative energy or to help empower goals.
I hope this helps you somehow.
Blessings to your work,
Mammabear