Table 3: Role of each multimodal CT technique (NCCT, CTA, CTP, CECT) in the diagnosis of SM
| SM Detected on Multimodal CT | NCCT/CECT | CTA | CTP |
|---|---|---|---|
| Seizure, 7/13 (54%) | Nega/no CE | Neg | ↑CBV ↑CBF ↓MTT/Tmax |
| Seizure, 6/13 (46%) | Neg/no CE | Neg | ↓CBV ↓CBF ↓MTT/Tmax |
| Brain tumor, 6/7 (86%) | Hypodensity, mass effect/CE in 3/6 | Neg | ↑CBV ↑CBF ↓MTT/Tmax |
| Brain tumor, 1/7 (14%) | Hypodensity, mass effect/no CE | Neg | ↓CBV ↓CBF ↓MTT/Tmax |
| Subdural hematoma, 1/1 | Subdural collection/no CE | Vessel displacement | Neg |
| AVF, 1/1 | Neg/redundant vessels on CECT | Redundant vessels | ↑CBV ↑CBF ↓MTT/Tmax |
Note:—Neg indicates negative for acute findings; CE, contrast enhancement; ↑, increased; ↓, decreased.
↵a Although negative for acute finding, NCCT showed the following in 4 different patients: 2 subdural collections and 1 cavernoma, which were already known from previous examinations, and 1 chronic left parietal middle cerebral infarct.