Susceptibility weighted imaging depicts retinal hemorrhages in abusive head trauma

Giulio Zuccoli1, Ashok Panigrahy, Anshul Haldipur

  • 1Department of Pediatric Radiology, Children's Hospital of Pittsburgh of UPMC, 4401 Penn Avenue, Pittsburgh, PA 15224, USA. giulio.zuccoli@gmail.com

Neuroradiology
|April 10, 2013
PubMed
Abstract

Insights

Magnetic resonance imaging (MRI) susceptibility weighted images (SWI) can detect retinal hemorrhages (RH) in abusive head trauma (AHT). A specialized high-resolution orbits SWI protocol improves RH detection compared to standard brain MRI protocols.

Area of Science:

  • Ophthalmology
  • Radiology
  • Pediatrics

Background:

  • Abusive head trauma (AHT) often presents with retinal hemorrhages (RH).
  • Diagnosing AHT relies on identifying RH, typically via dilated fundus examination (DFE).
  • Magnetic resonance imaging (MRI) susceptibility weighted imaging (SWI) is a non-invasive technique that may detect RH.

Purpose of the Study:

  • To evaluate the effectiveness of MRI SWI in detecting RH in suspected AHT cases.
  • To compare the diagnostic capability of standard brain MRI SWI sequences versus a dedicated high-resolution orbits SWI protocol for RH detection.
  • To assess the sensitivity and specificity of MRI SWI for RH identification against the gold standard DFE.

Main Methods:

  • Retrospective, observational study of 28 patients with suspected AHT.
  • DFE and brain MRI-SWI were performed on all patients.
  • Standard and high-resolution orbits SWI sequences were analyzed for RH detection.

Main Results:

  • Standard brain MRI-SWI detected RH in 62% of patients with RH confirmed by DFE.
  • A dedicated orbits SWI protocol increased RH detection to 80%.
  • MRI SWI showed 75% sensitivity with standard protocols, increasing to 83% with the orbits protocol; no RH were detected in patients without DFE-confirmed RH.

Conclusions:

  • MRI SWI is a valuable tool for detecting RH in AHT.
  • A tailored, high-resolution orbits SWI protocol enhances the detection rate of RH.
  • MRI SWI, particularly with an orbits protocol, shows promise as a supplementary diagnostic method for AHT.