DSA-Based 2D Perfusion Measurements in Delayed Cerebral Ischemia to Estimate the Clinical Outcome in Patients with Aneurysmal Subarachnoid Hemorrhage: A Technical Feasibility Study
Abstract
:1. Introduction
2. Materials and Methods
2.1. Study Population, In-/Exclusion Criteria, and Angiography Setting
2.2. Bolus Tracking Model
- Onset (ms): first point in time of a significantly higher density (or CA concentration) compared to earlier time points.
- ΔSImax or dSI: maximum difference in grey scales/maximum amplitude of CA concentration.
- Time to peak TTP (ms): time from onset to maximal signal attenuation/CA concentration (dSI).
- Full width at half maximum FWHM (ms): time interval between incoming and outflowing contrast agent bolus when half of the maximum difference in grey scales (dSI or ΔSImax) was reached.
- Area under the curve AUC: area enclosed by the C(t)-curve from onset to the endpoint of FWHM.
2.3. Statistics
3. Results
4. Discussion
5. Conclusions
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Conflicts of Interest
References
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Inclusion Criteria | Exclusion Criteria |
---|---|
Aneurysmal SAH with relevant vasospasm | Traumatic SAH |
DSA data available for each of the three time points: initial DSA with symptomatic SAH (T0), DSA before (T1), and after endovascular treatment (T2) | Hemorrhage from arteriovenous malformation |
Period of time between January 2013 and December 2019 | Tumor-associated hemorrhage |
Motion artifacts | |
Right/Left anterior oblique DSA projections <80° and/or >100° | |
Patients without DSA data before vasospasms |
Subgroups | Study Population | Group 1 | Group 2 | p-Value | |
---|---|---|---|---|---|
Number of cases | 26 (100%) | 10 (38.5%) | 16 (61.5%) | ||
Age (years) | 50.26 ± 11.4 | 45.9 ± 15.2 | 53 ± 7.7 | 0.23 | |
Sex | Female | 20 (70%) | 7 (70%) | 13 (81%) | 0.6 |
Male | 6 (30%) | 3 (30%) | 3 (19%) | ||
Fisher Score (I–IV) | 4 (IQR 1) | 4 (IQR 1) | 4 (IQR 1) | 0.9 | |
Hunt and Hess (0–5) | 2 (IQR 3) | 2 (IQR 2.75) | 2 (IQR 3) | 0.6 | |
Localization of Aneurysm | ICA | 1 (3.8%) | 0 | 1 (6.3%) | 0.6 |
ACA | 13 (50%) | 5 (50%) | 8 (50%) | ||
MCA | 4 (15.4%) | 1 (10%) | 3 (18.8%) | ||
BA | 7 (26.9%) | 4 (40%) | 3 (18.8%) | ||
MCA + BA | 1 (3.8%) | 0 | 1 (6.3%) | ||
Treatment modality | Clip | 8 (30.8%) | 2 (20%) | 6 (37.5%) | 0.4 |
Coil | 18 (69.2%) | 8 (80%) | 10 (62.5%) | ||
Days until symptomatic vasospasm | 7 ± 2.2 | 6.8 ± 2.5 | 7 ± 3 | 0.8 | |
Localization of vasospasm | ACA | 6 (23.1%) | 3 (30%) | 3 (18.8%) | 0.07 |
MCA | 11 (42.3%) | 1 (10%) | 10 (62.5%) | ||
ACA + MCA | 6 (23.1%) | 4 (40%) | 2 (12.5%) | ||
PCA | 1 (3.8%) | 1 (10%) | 0 | ||
PCA + MCA | 1 (3.8%) | 1 (10%) | 0 | ||
Global | 1 (3.8%) | 0 | 1 (6.3%) | ||
Treatment of Vasospasm | PTA | 4 (15.4%) | 2 (20%) | 2 (12.5%) | 0.6 |
IN | 17 (65.4%) | 7 (70%) | 10 (62.5%) | ||
PTA + IN | 5 (19.2%) | 1 (10%) | 4 (25%) | ||
mRS at discharge | 5 (IQR 2) | 2.5 (IQR 3.5) | 5 (IQR 0.75) | 0.001 | |
mRS at follow up | 1 (IQR 3) | 1 (IQR 0) | 4 (IQR 4) | 0.012 | |
Years until follow up | 3.1 ± 1.9 | 3.3 ± 2.2 | 2.9 ± 1.8 | 0.8 |
Model 1 | |||
Predicted Variable | Parameters | Coefficient 1 | Coefficient 2 |
Age | MST1 | ||
mRS at discharge | R | 0.45 | |
R2 | 0.2 | ||
Sig. (Model) | 0.07 | ||
Constant (Model) | 0.59 | ||
Regressions coefficient B | 0.07 | −4.39 | |
β (standardized) | 0.45 | −0.038 | |
Sig. (Coefficients) | 0.025 | 0.84 | |
Power (1 − β) | 0.56 | ||
Model 2 | |||
Predicted Variable | Parameters | Coefficient 1 | Coefficient 2 |
Age | MST2 | ||
mRS at discharge | R | 0.62 | |
R2 | 0.39 | ||
Sig. (Model) | 0.004 | ||
Constant (Model) | 2.1 | ||
Regression coefficient B | 0.072 | −30.43 | |
β (standardized) | 0.46 | −0.43 | |
Sig. (Coefficients) | 0.01 | 0.014 | |
Power (1 − β) | 0.94 | ||
Model 3 | |||
Predicted Variable | Parameters | Coefficient 1 | Coefficient 2 |
Age | ΔMS = MST1 − MST2 | ||
mRS at discharge | R | 0.579 | |
R2 | 0.335 | ||
Sig. (Model) | 0.009 | ||
Constant (Model) | 0.859 | ||
Regression coefficient B | 0.07 | 23.35 | |
β (standardized) | 0.45 | 0.37 | |
Sig. (Coefficients) | 0.015 | 0.04 | |
Power (1 − β) | 0.87 |
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Reder, S.R.; Lückerath, S.; Neulen, A.; Beiser, K.U.; Grauhan, N.F.; Othman, A.E.; Brockmann, M.A.; Brockmann, C.; Kronfeld, A. DSA-Based 2D Perfusion Measurements in Delayed Cerebral Ischemia to Estimate the Clinical Outcome in Patients with Aneurysmal Subarachnoid Hemorrhage: A Technical Feasibility Study. J. Clin. Med. 2023, 12, 4135. https://doi.org/10.3390/jcm12124135
Reder SR, Lückerath S, Neulen A, Beiser KU, Grauhan NF, Othman AE, Brockmann MA, Brockmann C, Kronfeld A. DSA-Based 2D Perfusion Measurements in Delayed Cerebral Ischemia to Estimate the Clinical Outcome in Patients with Aneurysmal Subarachnoid Hemorrhage: A Technical Feasibility Study. Journal of Clinical Medicine. 2023; 12(12):4135. https://doi.org/10.3390/jcm12124135
Chicago/Turabian StyleReder, Sebastian R., Steffen Lückerath, Axel Neulen, Katja U. Beiser, Nils F. Grauhan, Ahmed E. Othman, Marc A. Brockmann, Carolin Brockmann, and Andrea Kronfeld. 2023. "DSA-Based 2D Perfusion Measurements in Delayed Cerebral Ischemia to Estimate the Clinical Outcome in Patients with Aneurysmal Subarachnoid Hemorrhage: A Technical Feasibility Study" Journal of Clinical Medicine 12, no. 12: 4135. https://doi.org/10.3390/jcm12124135