Hi Glynj I have not had radiotherapy to reduce the myeloma cells as such but I have had it twice for pain relief and to shrink tumours. It was painless very quick , the first session takes about an hour to set it all up but each session afterwards was about 15mins In my case it was completely successful , especially the last time when I had unbearable pain. Both times the pain disappeared and the tumour was no longer evident. I had only one side-effect which was fatigue and that lasted for a few weeks but it was bearable, it does depend on where you are treated though Before I had radiotherapy I had thought it had little use in cancer treatment nowadays but when I looked into it I was impressed how precise modern techniques are They are now able to hit the offending areas from all angles and without damaging too many healthy cells. The succcess rate for treating spinal tumours is excellent Good luck John I hope you get your radiotherapy very soon and those numbers come down love Bridget