Article Figures & Data
Figures
- Fig 1.
Temporal spacing of different scan sets to allow higher temporal sampling. The function is a typical TDC extracted at 1-voxel position within a vessel, and the markers define the center time point of each rotation of the C-arm.
- Fig 2.
CBF maps for 6-scan sets (A-B-C-D-E-F) from different injection-protocol C-arm CBCT (A−C) and CTP images (D−F). The 3 injection protocols used are 3 mL/s 67% (A and D), 6 mL/s 50% (B and E), and 3 mL/s 100% (C and F). All injections had a duration of 8 seconds.
- Fig 3.
Results of CBF values for the 6-mL/s 50% contrast injection. (A), CTP, C-arm CBCT for scan sets (B), A-B-C-D-E-F (C), B-D-F (D), A-C (E), B-D and (F) B.
- Fig 4.
Bland-Altman plots of C-arm CBCT versus CT CBF values for the 3 different injection protocols. Units for both axes are milliliters/100 g/min of tissue. Filled gray circles represent average values in gray matter regions of interest; open circles, white matter regions of interest.
Tables
- Table 1:
Difference in CBF between right and left hemispheres calculated from the clinical CT images only, for ROIs located in located in grey or white matter in the 2 hemispheresa
Injection Method Difference in CBF between Left and Right Hemispheres (mL/100 g/min) White Matter Grey Matter 6 mL/s 50% Mean 2.04 1.98 SD 6.03 6.77 Overall ρ 0.92 Overall r 0.92 3 mL/s 100% Mean 0.75 0.26 SD 7.86 9.49 Overall ρ 0.84 Overall r 0.84 3 mL/s 67% Mean 0.73 0.61 SD 9.24 6.74 Overall ρ 0.90 Overall r 0.90 -
a Mean and SD values are given in milliliters/100 g/min. The overall CCCs and the Pearson correlation coefficients between the left and right hemispheres (without grey/white matter discrimination) are also included and were found to be identical, implying no underlying bias due to position of the catheter or otherwise.
-
- Table 2:
Statistical results comparing the CBF values from CT and CBCT from different scan sets for the 6-mL/s 50% contrast-concentration injection protocola
Scan Set CCC (ρ) Correlation Coefficient (r) Difference (CT-CBCT) (mL/100 g/min) Bland-Altman 95% Limits Mean SD B-D-F 0.796 0.87 6.56 8.34 −9.78–22.89 A-B-C-D-E-F 0.772 0.88 8.60 7.65 −6.40–23.59 A-C 0.751 0.88 8.78 7.68 −6.27–23.84 -
a The top 3 candidates are shown.
-
In this issue
Jump to section
Related Articles
Cited By...
- Clinical Applications of Conebeam CTP Imaging in Cerebral Disease: A Systematic Review
- Dynamic Angiography and Perfusion Imaging Using Flat Detector CT in the Angiography Suite: A Pilot Study in Patients with Acute Middle Cerebral Artery Occlusions
- Endovascular Recanalization in Acute Ischemic Stroke Using the Solitaire FR Revascularization Device with Adjunctive C-Arm CT Imaging
- Exploring the Value of Using Color-Coded Quantitative DSA Evaluation on Bilateral Common Carotid Arteries in Predicting the Reliability of Intra-Ascending Aorta Flat Detector CT-CBV Maps
- A Novel Technique for the Measurement of CBF and CBV with Robot-Arm-Mounted Flat Panel CT in a Large-Animal Model
- C-Arm CT Measurement of Cerebral Blood Volume and Cerebral Blood Flow Using a Novel High-Speed Acquisition and a Single Intravenous Contrast Injection
- 4D Digital Subtraction Angiography: Implementation and Demonstration of Feasibility
- Initial experience with a combined multidetector CT and biplane digital subtraction angiography suite with a single interactive table for the diagnosis and treatment of neurovascular disease
- Frameless multimodal image guidance of localized convection-enhanced delivery of therapeutics in the brain
- Advances in Stroke: Advances in Interventional Neuroradiology