Improved Visualization and Quantification of Net Water Uptake in Recent Small Subcortical Infarcts in the Thalamus Using Computed Tomography
Abstract
:1. Introduction
2. Materials and Methods
2.1. Patients
2.2. Imaging
2.3. Co-Registration
2.4. Quantification of Net Water Uptake
2.5. Image Ppostprocessing
2.6. Reading of Postprocessed NCCT Datasets
2.7. Statistical Analysis
3. Results
4. Discussion
5. Conclusions
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Acknowledgments
Conflicts of Interest
Appendix A
Main Collective | Control Collective 1 | Control Collective 2 | p-Value | |
---|---|---|---|---|
Subjects, No. (%) | 34 (100) | 12 (100) | 22 (100) | - |
Female, No. (%) | 14 (41) | 5 (42) | 11 (50) | >0.05 |
Mean age No. (SD), years | 69.6 (±8.7) | 70.3 (±14.2) | 72.1 (±11.4) | >0.05 |
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Variable | |
---|---|
Subjects, No. (%) | 34 (100) |
Female sex, No. (%) | 14 (42) |
Age, median (IQR), years | 70 (63–76) |
NIHSS score, median (IQR) | 2 (1–3) |
Vascular risk factors, No. (%) | |
Hypertension | 29 (85) |
Hyperlipidemia | 22 (65) |
Diabetes | 16 (47) |
Current smoker | 4 (12) |
Symptom onset (or last known well) to CT, No. (%) | |
0–6 h | 11 (32) |
>6–12 h | 7 (21) |
>12–24 h | 9 (26) |
>24–36 h | 7 (21) |
Admission CT to MRI time, mean (range), min | 2845 (112–14,313) |
White matter lesions (Fazekas score), No. (%) | |
0 | 3 (9) |
1 | 25 (73) |
2 | 5 (15) |
3 | 1 (3) |
Recent small subcortical infarcts in the thalamus | |
Side left, No. (%) | 23 (68) |
Volume at follow-up MRI, mean (SD), cm3 | 0.35 (±0.3) |
Hounsfield units (HU), mean (SD) | 29.6 (±3.1) |
Net water uptake, mean (SD), % | 10.8 (±8) |
Unaffected contralateral thalamus, HU, mean (SD) | 33.3 (±2.6) |
Time Window | Infarct, Mean (SD), HU | Contralateral Area, Mean (SD), HU | p-Value | NWU, Mean (SD), % |
---|---|---|---|---|
0–6 h | 31.3 (±2.7) | 33.5 (±2.8) | 0.016 | 6.4 (±7.2) |
>6–12 h | 30.2 (±2.3) | 32.6 (±2.6) | 0.002 | 7.3 (±3.4) |
>12–24 h | 29.5 (±3.3) | 34.5 (±2.8) | 0.000 | 14.4 (±7.1) |
>24–36 h | 26.6 (±2.1) | 32.0 (±1.9) | 0.004 | 16.6 (±8.7) |
NCCT, % | NCCT + Window-Optimized NCCT, % | NCCT + BC-Optimized NCCT, % | |
---|---|---|---|
Sensitivity | 32 | 38 | 41 |
Specificity | 95 | 91 | 86 |
PPV | 92 | 87 | 82 |
NPV | 48 | 49 | 49 |
Time Window (Symptom Onset—NCCT) | NCCT | NCCT + Window-Optimized NCCT | NCCT + BC-Optimized NCCT | |||
---|---|---|---|---|---|---|
Correctly Detected | Not Detected | Correctly Detected | Not Detected | Correctly Detected | Not Detected | |
0–6 h, No. (%) | 1/11 (9) | 10/11 (91) | 1/11 (9) | 10/11 (91) | 1/11 (9) | 10/11 (91) |
>6–12 h, No. (%) | 1/7 (14) | 6/7 (86) | 3/7 (43) | 4/7 (57) | 3/7 (43) | 4/7 (57) |
>12–24 h, No. (%) | 5/9 (56) | 4/9 (44) | 5/9 (56) | 4/9 (44) | 6/9 (67) | 3/9 (33) |
>24–36 h, No. (%) | 4/7 (57) | 3/7 (43) | 4/7 (57) | 3/7 (43) | 4/7 (57) | 3/7 (43) |
Overall, No. (%) | 11/34 (32) | 23/34 (68) | 13/34 (38) | 21/34 (62) | 14/34 (41) | 20/34 (59) |
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Schön, F.; Wahl, H.; Grey, A.; Krukowski, P.; Müller, A.; Puetz, V.; Linn, J.; Kaiser, D.P.O. Improved Visualization and Quantification of Net Water Uptake in Recent Small Subcortical Infarcts in the Thalamus Using Computed Tomography. Diagnostics 2023, 13, 3416. https://doi.org/10.3390/diagnostics13223416
Schön F, Wahl H, Grey A, Krukowski P, Müller A, Puetz V, Linn J, Kaiser DPO. Improved Visualization and Quantification of Net Water Uptake in Recent Small Subcortical Infarcts in the Thalamus Using Computed Tomography. Diagnostics. 2023; 13(22):3416. https://doi.org/10.3390/diagnostics13223416
Chicago/Turabian StyleSchön, Felix, Hannes Wahl, Arne Grey, Pawel Krukowski, Angela Müller, Volker Puetz, Jennifer Linn, and Daniel P. O. Kaiser. 2023. "Improved Visualization and Quantification of Net Water Uptake in Recent Small Subcortical Infarcts in the Thalamus Using Computed Tomography" Diagnostics 13, no. 22: 3416. https://doi.org/10.3390/diagnostics13223416