I'm not familiar with any TV that has build in Bluetooth transmitter for audio out, but Yes, with helps of converter here and there you can listen to your TV from your MM500X.
However MM500X made especially for music listening and it has built in microphone so it can be used with tablet/smartphone for calling.
As many headphones say that they have noise cancellation technology these implement a poor version of it. Compared to headphones such as the Bose it is not that good, but these are great headphones for the price and I do recommend
I do not know what CTIA standard is. What I can say is that I use this Bluetooth headset with my Acer laptop to listen to music from the music database on my NAS server and it sounds beautiful. Incidentally I had to use the Sennheiser BTD 500 USB plugin unit on the laptop to make it work.