We report a case of a ruptured cerebral aneurysm in spite of receiving MR angiography (MRA) 6 months previously. A 59-year-old man lost consciousness and a head CT revealed a subarachnoid hemorrhage (SAH). Cerebral angiography exposed an aneurysm, 9 mm in diameter, located at the anterior communicating artery. Aneurysmal neck clipping was performed and the postoperative course was uneventful. The patient had received a brain checkup with MRI and MRA due to hypertension experienced 2 years previously, and the MRA study for further examination of amnesia 6 months before the SAH was discovered. A the time, the MRA was negative but retrospective analysis of the source image of the MRA exhibited the aneurysm. To increase the accuracy of diagnosis of cerebral aneurysms using MRI devices, not only must the MRA and the MR images be evaluated, but the source images of the MRA must also be carefully evaluated. If possible, three-dimensional CT angiography should also be used to detect aneurysms.
All Science Journal Classification (ASJC) codes
- Clinical Neurology