Review of Movahed's sign (D shaped left ventricle seen on gated SPECT) suggestive of right ventricular overload

Shishir Murarka, Mohammad R Movahed

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

Recently, D shaped ventricle seen on gated SPECT imaging (Movahed's sign) has shown to correlate with right ventricular overload similar to the D shape ventricle seen on echocardiography. Right ventricle (RV) imaging during gated SPECT studies is challenging because of the low tracer uptake due to relatively smaller right ventricular myocardial mass and lower coronary flow to the RV. Increased mass or workload causes higher tracer uptake in the RV wall secondary to increase in RV wall thickness and higher coronary flow. Furthermore, increased RV volume or pressure load can cause displacement of the septum towardsthe left ventricle causing septal flattening and a D shaped configuration of the left ventricular septum. This is an important finding that should be a part of nuclear gated SPECT interpretation.

Original languageEnglish (US)
Pages (from-to)553-557
Number of pages5
JournalInternational Journal of Cardiovascular Imaging
Volume26
Issue number5
DOIs
StatePublished - Jun 2010
Externally publishedYes

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Single-Photon Emission-Computed Tomography
Heart Ventricles
Ventricular Septum
Workload
Echocardiography
Pressure

Keywords

  • D shaped left ventricle
  • Gated SPECT
  • Nuclear cardiology
  • Right ventricle overload
  • Right ventricular hypertrophy
  • RVH
  • Septal flattening

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging
  • Cardiology and Cardiovascular Medicine
  • Medicine(all)

Cite this

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abstract = "Recently, D shaped ventricle seen on gated SPECT imaging (Movahed's sign) has shown to correlate with right ventricular overload similar to the D shape ventricle seen on echocardiography. Right ventricle (RV) imaging during gated SPECT studies is challenging because of the low tracer uptake due to relatively smaller right ventricular myocardial mass and lower coronary flow to the RV. Increased mass or workload causes higher tracer uptake in the RV wall secondary to increase in RV wall thickness and higher coronary flow. Furthermore, increased RV volume or pressure load can cause displacement of the septum towardsthe left ventricle causing septal flattening and a D shaped configuration of the left ventricular septum. This is an important finding that should be a part of nuclear gated SPECT interpretation.",
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