Gating errors on cardiac nuclear stress testing

Changed by Joachim Feger on 11 Dec 16:48
Diagnosis certain

Updates to Case Attributes

Presentation was changed:
Cardiac nuclear testing performed as pre operativea preoperative assessment for renal transplant.
Body was changed:

VeryA very important lesson to always look at the QA page first to look for gating errors.

If the number of rejected beats are high can add the EFejection fraction in a nuclear stress test may not be as accurate as the echo EFechocardiographic ejection fraction.

Don't expect your technologist to catch all the errors.

  • -<p>Very important lesson to always look at the QA page first to look for gating errors.</p><p>If the number of rejected beats are high can add the EF may not be as accurate as the echo EF.</p><p>Don't expect your technologist to catch all the errors.</p>
  • +<p>A very important lesson to always look at the QA page first to look for gating errors.</p><p>If the number of rejected beats are high the ejection fraction in a nuclear stress test may not be as accurate as the echocardiographic <a title="Left ventricular ejection fraction (echocardiography)" href="/articles/left-ventricular-ejection-fraction-echocardiography">ejection fraction</a>.</p><p>Don't expect your technologist to catch all the errors.</p>

Updates to Study Attributes

Findings was changed:

1. TecnologistTechnologist should have noticed that there is a gating problem. 

2.Should. Should have converted to aan on the gated stress test.

3.See . See the ratio of accepted to rejected heart beatsheartbeats

4. This test should not have been processed.

5.When. When reported it was the most abnormal stress test ever seen.

6. Cardiologist did an echocardiogram and called the EF is normal on echo.

7.Then. Then we went back and analyzed the gating error. PatientThe patient was called back for a repeat stress test and another unnecessary radiation exposure.

Updates to Study Attributes

Findings was changed:

1. Repeat study the QA parameters are so different. Gating errors are usually due to atrial fibrillation and PVCs. But sometimes the the leads and connections can be faulty.

2. EF matches with the echo findings.

3.No. No ischemia, fixed decreased counts in apex likely from apical thinning.

Updates to Quizquestion Attributes

Answer was changed:
Flickering artifact. This is seen onin the raw cine data set.

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