A specially designed cancer treatment room at a new $360m hospital in New Zealand has been suspended of its services due to construction faults and space constraints.

The radiation treatment room at Wellington Hospital was found not to be radiation proof and a new $4.9m machine for treating tumours is not being used because of lack of space, local newspaper The Dominion Post reports.

The Capital and Coast District Health Board papers said that the radioactive iodine room for thyroid cancer treatment was not fit to carry out the services until it could be repaired to meet basic radiation shielding requirements.