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Table 3: 
Morphology of recanalized segments on time-of-flight MR venography (TOF-MRV) and contrast-enhanced MR venography (CE-MRV)
TOF-MRVCE-MRV
Recanalized Segment MorphologyN (%)Recanalized Segment MorphologyN (%)
No flow signal8 (25.8%)Peripheral enhancement with central filling defect (PE)15 (71.4%)
Peripheral continuous channels (PC)12 (38.7%)Irregular central and peripheral filling defects with heterogeneous enhancement (HE)4 (19.1%)
Central and peripheral continuous channels (CPC)6 (19.4%)Central enhancing channel (CE)2 (9.5%)
Irregular discontinuous channels (DC)3 (9.7%)
Central continuous channel (CC)2 (6.4%)
  • Note:—31 thrombosed segments were assessed by TOF-MRV, and 21 thrombosed segments were assessed by CE-MRV. All heterogeneously enhancing segments on CE-MRV exhibited corresponding central and peripheral channels on TOF-MRV. Thirteen of 15 thrombosed segments exhibiting peripheral enhancement with central filling defects on CE-MRV (PE) exhibited either no visible flow signal or corresponding peripheral channels on TOF-MRV.