The PET machines are small, hand-held computers with a series of questions that allow real time feedback on clinic services, Western NSW local health district (LHD) chief executive Scott McLachlan said.

The devices will be used across the district's hospitals after being trialed extensively last year.

"This new system is fantastic. We get detailed feedback reports at the end of each moth for each facility and immediately can target areas for immediate improvement as well as acknowledging sites that are doing great work," Mr McLachlan said.

The introduction of the devices comes on the back of the Patient Pledge the health district signed last year to commit to the minimum standards of patient care.

"We are very much focused on patient outcomes and hearing from those in our care about what we need to do to give them the most positive experience possible," Mr McLachlan said.

"The key questions we are asking will ensure that we have regular data around our delivery of care against this patient pledge as well as other regular information about how engaged and satisfied our patients feel."

The initial results from the PETs had been very pleasing, Mr McLachlan said, and now the focus was on emergency departments and residential aged care services.