The thing about the used molecules is that they attach to the cancer more than other cells.
Apart from that you can concentrate the infrared light at the main clusters.
I'd say it is an improvement. Even if only the main clusters are destroyed it's noninvasive way to reduce the chance of mutation (less cancer cells means less chances for a mutation to gain chemo resistance).
The thing about the used molecules is that they attach to the cancer more than other cells.
Apart from that you can concentrate the infrared light at the main clusters.
I'd say it is an improvement. Even if only the main clusters are destroyed it's noninvasive way to reduce the chance of mutation (less cancer cells means less chances for a mutation to gain chemo resistance).