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Neuroradiology

, Volume 56, Issue 4, pp 291–295 | Cite as

Dual-energy CT for detection of contrast enhancement or leakage within high-density haematomas in patients with intracranial haemorrhage

  • Yoshiyuki WatanabeEmail author
  • Akio Tsukabe
  • Yuki Kunitomi
  • Mitsuo Nishizawa
  • Atsuko Arisawa
  • Hisashi Tanaka
  • Kazuhisa Yoshiya
  • Takeshi Shimazu
  • Noriyuki Tomiyama
Diagnostic Neuroradiology

Abstract

Introduction

Our study aimed to elucidate the diagnostic performance of dual-energy CT (DECT) in the detection of contrast enhancement in intracranial haematomas (ICrH) with early phase dual-energy computed tomography angiography (CTA) and compare the results with those obtained by delayed CT enhancement.

Methods

Thirty-six patients with ICrH were retrospectively included in this study. All patients had undergone single-energy non-contrast CT and contrast-enhanced dual-source DECT. DECT images were post-processed with commercial software, followed by obtaining iodine images and virtual non-contrast images and generating combined images that created the impression of 120-kVp images. Two neuroradiologists, blinded to the patients’ data, reviewed two reading sessions: session A (non-contrast CT and combined CT) and session B (non-contrast CT, combined CT, and iodine images) for detection of contrast enhancement in the haematomas.

Results

Contrast leakage or enhancement was detected in 23 (57.5 %) out of 40 haemorrhagic lesions in 36 patients on delayed CT. Three enhanced lesions were depicted only in the DECT iodine images. The sensitivity, specificity, positive predictive value, and negative predictive value of session A were 82.6, 94.1, 95.0, and 80.0 %, respectively, and those of session B were 95.7, 94.1, 95.7, and 94.1 %, respectively.

Conclusion

DECT emphasised the iodine enhancement and facilitated the detection of contrast enhancement or leakage.

Keywords

Computed tomography Dual energy Brain haemorrhage Iodine contrast medium CT angiography 

Abbreviations

ICrH

Intracranial haematoma

ICeH

Intracerebral haematoma

DECT

Dual-energy CT

ROI

Region of interest

PPV

Positive predictive value

NPV

Negative predictive value

HU

Hounsfield units

Notes

Conflict of interest

We declare that we have no conflict of interest.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2014

Authors and Affiliations

  • Yoshiyuki Watanabe
    • 1
    Email author
  • Akio Tsukabe
    • 1
  • Yuki Kunitomi
    • 1
  • Mitsuo Nishizawa
    • 1
  • Atsuko Arisawa
    • 1
  • Hisashi Tanaka
    • 1
  • Kazuhisa Yoshiya
    • 2
  • Takeshi Shimazu
    • 2
  • Noriyuki Tomiyama
    • 1
  1. 1.Department of Diagnostic and Interventional RadiologyOsaka University Graduate School of MedicineSuitaJapan
  2. 2.Department of Traumatology and Acute Critical MedicineOsaka University Graduate School of MedicineOsakaJapan

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