GB/T 19042.4-2005

Evaluation and routine testing in medical imaging departments-Part 3-4:Acceptance tests-Imaging performance of X-ray equipment (TEXT OF DOCUMENT IS IN CHINESE)

1.1 Scope - This part of GB/T 19042 applies to components of dental X-ray equipment with radiological imaging system which affect the imaging quality and patient dose.

This part applies to acceptance tests for performance of dental X-ray equipment with intraoral radiographic image receptor as well as of dental X-ray equipment with extraoral radiographic image receptor (such as dental panoramic X-ray equipment, cephalometric X-ray equipment).

This part applies to achievement and treatment of dental films and digital images.

1.2 purpose - This part accurately describes:

a) Important parameters related to image characteristics and patient dose which describe performance of dental X-ray equipment mentioned before;

b) Test methods and allowable tolerance to determine whether measured values of these parameters meet the established specifications;

These methods are mainly non-intervention measurement, using appropriate measuring devices to test during or after installation. Statements covering installation procedures which are signed in the process ofAÿinstallation can be regarded as part of acceptance tests.

The purpose is to verify during installation the accordance of parameters that affect image quality and patient dose as well as to test malfunctions which are not coordinated with these parameters.

This part does not establish allowable tolerance of parameters for investigation and study. Neither does it take into account matters related to the followings:

c) Aspects of mechanical and electrical safety;

d) Performance of mechanics, electrics and software, unless they will directly affect the performance tests for image quality and patient dose.