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Dual-Energy CT Follow-Up After Stroke Thrombolysis Alters Assessment of Hemorrhagic Complications
- Source :
- Frontiers in Neurology, Vol 11 (2020), Frontiers in Neurology
- Publication Year :
- 2020
- Publisher :
- Frontiers Media S.A., 2020.
-
Abstract
- Background and Purpose: We aimed to determine whether dual-energy CT (DECT) follow-up can differentiate contrast staining (CS) from intracranial hemorrhage (ICH) in stroke patients treated with intravenous thrombolysis (IVT), who had undergone acute stroke imaging using CT angiography (CTA), and CT perfusion (CTP). Materials and Methods: Between November 2012 and January 2018, 168 patients at our comprehensive stroke center underwent DECT follow-up within 36 h after IVT and acute CTA with or without CTP but did not receive intra-arterial imaging or treatment. Two independent readers evaluated plain monochromatic CT (pCT) alone and compared this with a second reading of a combined DECT approach using pCT and water- and iodine-weighted images, establishing and grading the ICH diagnosis, per Heidelberg and Safe Implementation of Treatments in Stroke Monitoring Study (SITS-MOST) classifications. Results: On pCT alone within 36 h, 31/168 (18.5%) patients had findings diagnosed as ICH. Using combined DECT (cDECT) changed ICH diagnosis to “CS only” in 3/168 (1.8%) patients, constituting 3/31 (9.7%) of cases with initially pCT-diagnosed ICH. These three cases had pCT diagnoses of one SAH, one minor, and one more extensive petechial hemorrhage (hemorrhagic infarction types 1 and 2), respectively. pCT alone had a 100% sensitivity, 98% specificity, 90% positive predictive value (PPV), 100% negative predictive value (NPV), and 98% accuracy for any ICH, compared to the cDECT. Inter-reader agreement for ICH classification using pCT compared to DECT was weighted kappa 0.92 (95% CI 0.87–0.98) vs. 0.91 (0.85–0.95). Conclusion: Compared to pCT, DECT within 36 h after IV thrombolysis for acute ischemic stroke, changes the radiological diagnosis of post-treatment ICH to “CS only” in a small proportion of patients. Studies are warranted of whether the altered radiological reports have an impact on patient management, for example initiation timing of antithrombotic secondary prevention.
- Subjects :
- intracerebral hemorrhage (ICH)
medicine.medical_specialty
acute ischemic stroke
spectral computed tomography
medicine.medical_treatment
Perfusion scanning
lcsh:RC346-429
030218 nuclear medicine & medical imaging
03 medical and health sciences
0302 clinical medicine
Antithrombotic
medicine
intravenous thrombolysis
cardiovascular diseases
Medical diagnosis
Acute ischemic stroke
lcsh:Neurology. Diseases of the nervous system
Original Research
medicine.diagnostic_test
business.industry
computed tomography
Petechial rash
Thrombolysis
Neurology
Radiological weapon
Angiography
Neurology (clinical)
Radiology
business
030217 neurology & neurosurgery
Subjects
Details
- Language :
- English
- ISSN :
- 16642295
- Volume :
- 11
- Database :
- OpenAIRE
- Journal :
- Frontiers in Neurology
- Accession number :
- edsair.doi.dedup.....77eee5825cdf9707b79fd3ae70924efd