Journal List > J Korean Soc Radiol > v.78(5) > 1095538

Choi, Weon, Park, Kwon, Kim, Kwon, and Choi: Comparison of MRI Sequences for the Detection of Cerebral Venous Sinus Thrombosis During Follow-Up Examination

Abstract

Purpose

To compare the diagnostic performance of magnetic resonance (MR) sequences for the evaluation of cerebral venous sinus thrombosis (CVST) during followup examinations.

Materials and Methods

Thirteen cases that were confirmed to be CVST between January 2006 and March 2016 were included in this study. Two neuroradiologists independently examined each initial and follow-up MR sequence image in random order.

Results

Gadolinium-enhanced T1-weighted imaging (Gd-enhanced T1WI) was the most sensitive sequence for the detection of CVST in the initial and follow-up MR examinations (82% and 55.3%, respectively). Among the non-enhanced MR sequences of the initial examination, gradient-recalled echo was the most sensitive (77.4%), fluid-attenuated inversion recovery (FLAIR) had low sensitivity (34.4%). The overall diagnostic performances of all MR sequences except for FLAIR decreased during the follow-up. FLAIR was the most sensitive during follow-up, and was also the only sequence with increased sensitivity during follow-up (from 34.4% to 55.6%).

Conclusion

Gd-enhanced T1WI had the best diagnostic performance for CVST in both initial and follow-up MR examinations. Therefore, it is reasonable to use Gd-enhanced T1WI to evaluate CVST during follow-up examinations. However, for patients who cannot tolerate MR contrast agents, the use of FLAIR to assess the remaining CVST during the follow-up may be helpful.

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Fig. 1.
Study flow chart. AVF = arteriovenous fistula, CVT = cerebral venous thrombosis, DWI = diffusion-weighted imaging, FLAIR = fluid-attenuated inversion recovery, GRE = gradient-recalled echo, MRV = magnetic resonance venography
jksr-78-330f1.tif
Fig. 2.
Images of a 51-year-old man with acute left transverse sinus thrombosis (3 days). Note the susceptibility artifact, which is low signal and blooming (white arrows) on gradient-recalled echo imaging (A) and the empty delta sign (black arrows) in the left transverse sinus on Gd-enhanced T1-weighted imaging (B). No signal change is observed in the left transverse sinus (black arrows) compared to the normal right transverse sinus on fluid-attenuated inversion recovery (C). No diffusion restriction is observed in the left transverse sinus (white arrows) on diffusion-weighted imaging (D). Dural venous sinus thrombosis is confirmed as the filling defect in left transverse and sigmoid sinuses on gadolinium-enhanced 4 dimensional magnetic resonance venography (E).
jksr-78-330f2.tif
Fig. 2.
(continued) Images of a 51-year-old man with left transverse sinus thrombosis during follow-up (12 days). The patient underwent followup brain magnetic resonance imaging including MRV 12 days after the first examination due to aggravation of the headache. Note the susceptibility artifact on gradient-recalled echo (F) and typical empty delta sign in the left transverse sinus on Gd-enhanced gadolinium-enhanced T1-weighted imaging (G) are not observed (black arrows). The high signal intensity (black arrows) on fluid-attenuated inversion recovery (H), and high signal intensity indicating diffusion restriction (black arrows) in the left transverse sinus on diffusion-weighted imaging (I). Dural venous sinus thrombosis is confirmed as the filling defect in the left transverse and sigmoid sinuses on follow-up gadolinium-enhanced 4 dimensional MRV (J). MRV = magnetic resonance venography
jksr-78-330f3.tif
Table 1.
Clinical Characteristics of 13 Patients with Dural Venous Sinus Thrombosis
No. Sex/ Age Primary Symptom Clinical Stage/ Duration (Days) Thrombosed Segments Associated MR findings Recanalization on F/U MRV No. of F/U MRIs Total F/U Period (Days) Mean F/U Period (Days)
1 M/51 Headache Subacute (14) LT, LS Venous infarction No (LT, LS) 3 345 115
2 M/57 Headache Acute (4) IS, St, LT, LS   Partial (LT, LS), 1 116 116
            Complete (IS, St)      
3 M/51 Headache Acute (1) SS, LT, LS Venous infarction No (LT), 1 135 135
            Complete (SS, LS)      
4 M/28 Headache Subacute (10) SS, RT, RS   Complete (SS, RT, RS) 1 208 208
5 M/73 Headache Subacute (10) SS, IS, LT, LS   No (SS, IS, LT, LS) 3 272 90
6 M/32 Seizure Acute (1) SS Venous infarction Complete (SS) 1 51 51
7 M/43 Headache Acute (1) SS, RT, RS Venous infarction Partial (SS), 2 163 81.5
            Complete (RT, RS)      
8 M/23 Headache Acute (1) SS, RT   Complete (SS, RT) 1 93 93
9 M/35 Lt. side weakness Subacute (21) SS, RT Venous infarction Complete (SS, RT) 3 298 99
10 M/71 Rt. side weakness Acute (3) SS, LT, LS SAH Partial (SS, LT, LS) 3 18 6
11 M/41 Headache Acute (3) SS, RT, RS SAH, SDH Partial (SS, RT, RS) 1 12 12
12 F/28 Headache Subacute (10) SS Venous infarction Complete (SS) 1 282 282
13 F/15 Headache Subacute (9) SS, LT, LS Venous infarction Complete (SS, LT, LS) 1 127 127

Complete = complete recanalization, Duration = days from symptom onset to first MRI, F = female, F/U = follow-up, IS = inferior sagittal sinus, LS = lef sigmoid sinus, LT = left transverse sinus, M = male, MRI = magnetic resonance imaging, No = no recanalization, Partial = partial recanalization, RS = righ sigmoid sinus, RT = right transverse sinus, SAH = subarachnoid hemorrhage, SDH = subdural hemorrhage, SS = superior sagittal sinus, St = straight sinus

Table 2.
Per-Segment Performances of Initial Brain Magnetic Resonance Sequences for the Detection of Dural Venous Sinus Thrombosis
Sequence Sensitivity (%) Specificity (%) Accuracy (%) Kappa Value p-Value
GRE 77.4 98.1 90.5 0.886 < 0.001
FLAIR 34.4 94.9 73.6 0.728 < 0.001
DWI 18.8 100.0 71.4 0.846 < 0.001
T1WI 69.6 97.9 88.6 0.845 < 0.001
Gd-En T1WI 82.0 98.2 92.9 0.916 < 0.001

DWI = diffusion-weighted imaging, FLAIR = fluid-attenuated inversion recovery, Gd-En T1WI = gadolinium-enhanced T1-weighted imaging, GRE = gradient-recalled echo, T1WI = T1-weighted imaging

Table 3.
Per-Segment Performances of Brain Magnetic Resonance Sequences for the Detection of Dural Venous Sinus Thrombosis During Follow-Up
Sequence Sensitivity (%) Specificity (%) Accuracy (%) Kappa Value p-Value
GRE 15.6 100.0 76.4 0.606 < 0.001
FLAIR 55.6 95.7 84.5 0.836 < 0.001
DWI 22.2 99.1 77.6 0.902 < 0.001
T1WI 48.2 97.7 85.7 0.388 < 0.001
Gd-En T1WI 55.3 99.0 87.1 0.815 < 0.001

DWI = diffusion-weighted imaging, FLAIR = fluid-attenuated inversion recovery, Gd-En T1WI = gadolinium-enhanced T1-weighted imaging, GRE = gradient-recalled echo, T1WI = T1-weighted imaging

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