Clinical Neuroscience

First experiences with MR-compatible implants in the management of Aneurysmal subarachnoid haemorrhage

DÓCZI Tamás1, KÖVÉR Ferenc2, HORVÁTH Zoltán1, MÉSZÁROS István1, VADON Gábor2

NOVEMBER 20, 1996

Clinical Neuroscience - 1996;49(11-12)

Aneurysm clips made of titanium alloy were considered to be useful for clinical application due to the expected reduction in artifact formation on postoperative CT and MR. First, the behaviour of the new titanium clip (Aesculap) was investigated in phantom experiments in CT and MR scanners. After the in vitro tests had proved the applicability of the new implants, a series of operations was performed employing the new clip in 21 patients and the traditional phynox clip in 17 patients. All patients with a titanium implant had postoperative 11, T2 and proton-weighted MR scans. In 12 cases pre- and postoperative; in 9 cases only postoperative MR angiographies were carried out. In 4 patients both control MR- and catheter angiographies were performed. Clinical results as analysed at least 6 months following the operation were not different from those of 1992 and 1993 of the same team and were comparable to recently published data in the literature. The study has shown that ability to effectively diagnose clip-adjacent brain structures can be improved considerably by employing clips of titanium alloys. Concerning the value of postoperative MR angiography either with or without contrast material to control the effectiveness of aneurysm occlusion, the following conclusion was drawn: while the postoperative potency of the parent artery was clearly visualized in every case, it was impossible to define whether occlusion of the aneurysm had been complete.

AFFILIATIONS

  1. Department of Neurosurgery, University Medical School, Pécs
  2. Diagnostic Center of Pécs, Hungary

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