Abstract
Abstract TP76: Quantitative Comparison of Multidetector CT and Cone-Beam CT Perfusion Maps in Large Vessel Occlusion Stroke Patients Undergoing Mechanical Thrombectomy
Stroke (1970), Vol.51(Suppl_1)
02/2020
DOI: 10.1161/str.51.suppl_1.TP76
Abstract
Cerebral perfusion evaluation using CT or MR perfusion is the gold standard modality to select large vessel occlusion (LVO) stroke patients presenting >6 hours from symptom onset. The availability of cone beam C-arm CT perfusion (CBCTP) in angiography suites could reduce time to endovascular revascularization. We aimed to evaluate the reliability of using CBCTP when compared to multidetector CT perfusion (MDCTP). In this prospective, single-arm, interventional study, 14 LVO anterior circulation thrombectomy patients underwent both a 128 slice MDCTP in the ED and a CBCTP <30 minutes apart prior to groin puncture. CBCTP was acquired using a prototype acquisition mode enabling 10 consecutive C-Arm rotations with nearly continuous data acquisition. A total of 60 cc of contrast layered with 60 cc of saline were injected covering arterial inflow, parenchymal phase and venous outflow. Image data was reconstructed into CBF, CBV, MTT and TTP maps. Three types of measurements were used to compare modalities. In measurement 1, 6 circular regions of interest (ROI) (400mm
2
) were placed in the anterior arterial territory. In measurement 2, circular ROIs were placed in the ASPECTS regions (cortical 300mm
2
, subcortical 200mm
2
). In measurement 3, a ROI was drawn around the entire affected area. All ROIs were placed in the basal ganglia and supraganglionic level of both brain sides. Rates (unaffected/affected area) between MDCTP and CBCTP were compared for all sequences. The intraclass correlation coefficient (ICC) was calculated using a single rater, consistency, two-way random-effects model. Measurement 1 found a moderate degree of agreement between MDCTP and CBCTP in CBF, CBV, MTT and TTP rates with ICCs of 0.58 (CI 0.42 - 0.69), 0.65 (CI 0.53 - 0.74), 0.77 (CI 0.68 - 0.83) and 0.52 (CI 0.35 - 0.65). In measurement 2, moderate agreement was found in CBF, CBV and MTT rates; with ICCs of 0.51 (CI 0.32 - 0.65), 0.57 (CI 0.4 - 0.69) and 0.62 (CI 0.47 - 0.73). The results of measurement 3 found an excellent (ICC=0.95, CI 0.88 - 0.98), good (ICC=0.83, CI 0.62 - 0.9) and moderate (ICC=0.7, CI 0.34 - 0.87), degree of agreement in the CBV, MTT and CBF rates, respectively. These results demonstrate promising accuracy of CBCTP in the evaluating ischemic tissue in patient presenting with LVO acute stroke.
Details
- Title: Subtitle
- Abstract TP76: Quantitative Comparison of Multidetector CT and Cone-Beam CT Perfusion Maps in Large Vessel Occlusion Stroke Patients Undergoing Mechanical Thrombectomy
- Creators
- Santiago Ortega-Gutierrez - University of IowaDarko Quispe-Orozco - University of IowaSebastian Schafer - Siemens Healthineers, Madison, WIBeverly Aagaard KienitzCharles StrotherGuang-Hong Chen - Univ of Wisconsin, Madison, WIJohn Garrett - Univ of Wisconsin Sch of Medicine and Public Health, Madison, WIAndrea Holcombe - University of IowaGloria Lopez - Univ of Iowa Hosps, Iowa City, IACynthia Zevallos - University of IowaEdgar Samaniego - University of IowaSudeepta Dandapat - University of IowaKhaled Asi - Univ of Iowa Hosps, Iowa City, IAColin Derdeyn - University of Iowa
- Resource Type
- Abstract
- Publication Details
- Stroke (1970), Vol.51(Suppl_1)
- DOI
- 10.1161/str.51.suppl_1.TP76
- ISSN
- 0039-2499
- eISSN
- 1524-4628
- Language
- English
- Date published
- 02/2020
- Academic Unit
- Neurosurgery; Internal Medicine; Radiology; Neurology; Iowa Neuroscience Institute
- Record Identifier
- 9984303262702771
Metrics
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