106 Chapter 6 Table 1: Characteristics of included patients and aneurysms N (%) Female 50 (70.4) Age Mean (SD) 52.7 (5.7) Age Range 19 - 85 Unruptured aneurysms 9(12.2) Location of aneurysm ICA, PCom, OphthA 21 (28.4) ACom, ACA 25 (33.8) MCA 6(8.1) Vertebrobasilar 22 (29.7) (of which BATip 15 (20.3) Initial aneurysm size: Mean (SD) 6.2 (0.7) 5mm or smaller 29 (39.2) 5-15mm 43 (58.1) Larger than 15 mm 2 (2.7) Initial occlusion status Complete occlusion (R&R class 1) 44 (59.5) Residual neck (R&R class 2) 18 (24.3) Incomplete occlusion (R&R class 3) 12 (16.2) Number of patients at 6 month follow-up 50 Number of patients at 12 month follow-up 35 (Number of patients both 6 and 12 month follow-up 14) SD = Standard deviation. R&R = Roy and Raymond. ICA = Internal carotid artery. PCom = Posterior communicating artery. OphtA = Ophtalmic artery. ACom = Anterior communicating artery. ACA = Anterior cerebral artery. MCA = Middle cerebral artery. BAtip = tip of basilar artery. Test characteristics for both dichotomizations are also given in Table 2. Table 2. Test characteristics of CEMRA in the follow-up of coiled aneurysms for two different dichotomizations in the three-point Roy and Raymond classification. Adequate – Inadequate Complete – Incomplete N=91 (1 + 2) - (3)* (1) - (2+3)* Sens (%) 81.8 (65.7 – 97.9) 96.2 (91.0 – 100) Spec (%) 55.1 (43.4 – 66.8) 53.8 (38.2 – 69.5) NPV (%) 90.5 (81.6 – 99.4) 91.3 (79.8 – 100) PPV (%) 36.7 (23.2 – 50.2) 73.5 (63.0 – 84.0) Figures between brackets are 95% CI’s * Roy and Raymond classification
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