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Location:Home >> Speaker
Qian Hai

Topic:Pairwise testing used in medical device’s verification and validation

Speaker Introduction:

As test center manager in Siemens heathineers, building up and developing the test team to implement the tasks of many projects in medical imaging system. More than 10 years working experience in the industry of medical device. Focus on test team management and skill training.

2013.5.31 Winning in test team management        imbus test salon

2016.10.18 TPI Program in SSME XP TC 7th HC Testing Conference(Siemens)

2016.12.16 Test process improvement and follow-up  CSTQB 10-year anniversary

Brief of Topic:

Most field faults were caused by either incorrect single values or by an interaction of pairs of values." If that's generally correct, we ought to focus our testing on the risk of single-mode and double-mode faults. We can get excellent coverage by choosing tests such that 1) each state of each variable is tested, and 2) each variable in each of its states is tested in a pair with every other variable in each of its states. This is called pairwise testing or all-pairs testing.

     Pairwise testing is a combinatorial method of software testing that, for each pair of input parameters to a system, tests all possible discrete combinations of those parameters。Using carefully chosen test vectors, this can be done much faster than an exhaustive search of all combinations of all parameters, by "parallelizing" the tests of parameter pairs.

     [Evaluating FDA recall class failures in medical devices we established that] [...] out of the 109 reports that [were] detailed [enough], 98% showed that the problem could have been detected by testing the device with all pairs of parameter settings.

This discussion described the pairwise testing in the application of the Medical Equipment industry, and some examples in our testing have been taken via test tool.  From that example we can find the work loading improve quite a lot by using the Pairwise testing.

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