Ka whakamahia e te mita rere ultrasonic Doppler te ahupūngao o te pānga Doppler, i roto i tetahi rere wai i te aroaro o te motumotu ka whakaatahia te nekehanga auau tohu ultrasonic (arā, te rerekētanga ā-wāhanga tohu), mā te ine i te rerekētanga ā-wāhanga, ka taea te ine i te tere rere. Ko te nekehanga auau he mahi raina o te tere rere, ka tātarihia i roto i te ara iahiko hei whakaputa i tētahi tohu pumau, ka taea te tukurua, me te raina. Ko ēnei motumotu he mirumiru iri, he totoka, he atanga rānei nā te raruraru wai. Ka whakaputahia, ka whiwhihia hoki e ngā pūoko ngā tohu ultrasonic, ā, ka tukatukahia e ngā kaituku ngā tohu hei whakarato putanga anaro mō te rere me te whakaaturanga whakakotahi. He hangarau tātari mamati ahurei a te mita rere ultrasonic Doppler a Lanry Instruments me te hangarau whakakorenga whakarerekētanga auau, e hanga aunoa ana i te tohu ngaru kua whiwhi, ka taea te ine i te arai o te paipa, ā, kāore i te tino aro te wiri o te paipa. Hei tāuta i te pūoko, me whai wāhanga paipa roa te taha whakarunga me te taha whakararo o te tūranga tāutanga. I te nuinga o te wā, me 10D te paipa tika o te taha whakarunga, ā, me 5D te paipa tika o te taha whakararo. Ko D te diameter o te paipa.
He mea hanga motuhake ngā mita rere ultrasonic Doppler mō te ine i te wai kei roto he nui ake ngā poke pērā i ngā matūriki totoka, ngā mirumiru, te wai paru rānei. E whakamahia ana i roto i ngā mara e whai ake nei:
1) Ngā paru taketake, ngā paru hinu, ngā paru wai, te wai paru e rere ana, me ētahi atu.
2) Ngā mea wai kei roto ngā matūriki me ngā mirumiru i roto i te tukanga whakaputa ahumahi, pērā i te paru matū, te wai para paitini, me ētahi atu.
3) He wai kei roto te paru me ngā matūriki, pērā i te wai para, te wai keri hinu, te wai keri awa, me ētahi atu.
4) ngā momo paru paru katoa, pērā i te penupenu, te penupenu, te hinu mata, me ētahi atu
5) Ka taea te mono i te tāutanga ipurangi, he mea tino pai mō te ine i te rere o te waipara taketake o te diameter paipa nui.
6) Te whakatikatika rere o te mara me te whakamātautau rere o te reo mahi i runga ake nei, me te whakatikatika mara o ētahi atu mita rere.
Wā tuku: 20-Ākuhata-2021