CyberKnife for lung cancer

My mom(70yo)was diagnosed stage 3 lung cancer,tumour 24*37mm in upper  lobe of the left lung,mets in lymph nodes of the mediastinum 30*25,10mm.,adenous cr.cells were found out on punction. She had 4 chemo, after 1and 2 the tumour shrunk, after 3-4 it had stabilized.At the moment she is preparing for RT(traditional).Having visited a new cyber clinic I was recomended(not insisted on) to have treatment on cyberknife for the turmour only, mets should be radiated with a common way (linac, cobalt) because of them inaccessible location for CK.RT Radiologist  was sceptical of the efficiency of CK and advised to have  a traditional RT treatment.

 Is any sence to try CK in my case?

Thank you so much. 

I have stage 4 lung cancer. In janurary i was stage 3 and did the cyber knife of 4 treatments and of course in a few months had an other pep scan , which showed i went from a 3 to a 4 and now no one wants to know anything more about it. A week before the c.k. they coalsped my lung cause they have to pop gold beads into lung for the machine. They told me what a miricle machine this was, and only 4 in the whole state of ct.i everyone is different but i would research it further be fore you decide . I am now searching for natural alternatives. anythi ng is worth a try when you get a death sentence.i had better results 2 yrs before the c.k. on 47 treatments of radition. remiss ion for 2 yrs.