Article Figures & Data
Figures
- Fig 1.
Case 21. Right lateral internal carotid angiograms show a Cognard type IV lesion in an asymptomatic patient.
A, Preoperative image shows an anterior fossa DAVF with cortical venous reflux.
B, Postoperative image shows disappearance of the DAVF and venous reflux.
- Fig 2.
Case 21. rCBF maps for a Cognard type IV lesion in an asymptomatic patient.
A and B, Before surgery, resting rCBF in the right frontal region (white outline) is low (A), and the response of rCBF to the acetazolamide challenge is limited (B).
C and D, At 6 months after surgery, resting rCBF (C) and the response of rCBF (D) to the acetazolamide challenge is increased.
- Fig 3.
Differences in rCBF between groups according to Cognard angiographic classification.
A, Resting rCBF significantly differs between type I and types III and IV.
B, After acetazolamide challenge, rCBF significantly differs, even between type I and type II.
C, Increase in rCBF due to acetazolamide (ΔF, or acetazolamide value minus resting value) is significantly different between type I and the other types.
Tables
Patient/Age (y)/Sex Cognard Classification Affected Sinus Symptom Treatment* Description Due to Venous Hypertension? 1/75/M I R sigmoid Tinnitus No TAE 2/54/M I Superior sagittal sinus Bulging scalp vessels No TAE 3/78/F I Superior sagittal sinus Aneurysm-like STA dilatation No None 4/54/F I L cavernous None NA None 5/58/M I R cavernous Chemosis, diplopia No None 6/73/M I L cavernous Diplopia No None 7/75/F I L cavernous Chemosis No TVE 8/62/M IIa L sigmoid Tinnitus No TAE, TVE 9/75/M IIa R transverse sigmoid None NA None 10/33/M IIb L transverse sigmoid Headache, tinnitus Yes TAE, TVE 11/66/F IIb L cavernous Diplopia, disorientation Yes TVE 12/85/F IIb L cavernous Chemosis, diplopia No TAE 13/33/F IIa+b R transverse sigmoid Headache, visual disturbance Yes TAE 14/54/F IIa+b L transverse sigmoid Dementia Yes TAE,TVE 15/55/M III L transverse sigmoid Hemorrhage, vertigo, convulsion Yes TAE, TVE 16/63/M III R transverse sigmoid Hemorrhage Yes TAE 17/67/M III R transverse confluence L lower quadrant homonymous anopsia Yes TAE, TVE 18/72/F III L transverse confluence Dementia Yes TVE 19/78/F III L transverse Convulsion, disturbed consciousness Yes TAE 20/67/M IV L anterior fossa Convulsion Yes Surgery 21/74/M IV R anterior fossa None NA Surgery Note.—NA = Not applicable, STA = superficial temporal artery, TAE = transarterial embolization, TAV = transvenous embolization.
* All patients improved except for patients 3 and 12, whose condition was unchanged.
rCBF (ml/min/100g) Before Treatment 6 Months After Treatment P Value* Symptomatic patients (n = 10) Resting 23.3 ± 5.1 26.8 ± 7.3 .1849 Acetazolamide 27.1 ± 5.1 38.0 ± 12.4 .0166 ΔF† 3.9 ± 2.7 11.2 ± 7.0 .0367 Asymptomatic patients (n = 4) Resting 28.8 ± 8.2 30.1 ± 6.4 >.05 Acetazolamide 38.4 ± 7.6 47.4 ± 8.6 .0679 ΔF† 9.7 ± 2.6 17.2 ± 6.9 .0679 * Wilcoxon signed rank test.
† Acetazolamide rCBF − resting rCBF.
In this issue
Jump to section
Related Articles
Cited By...
- No citing articles found.