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Published on: March 23, 2011
MR Imaging of Hippocampal Sulcus Remnant: Age-Related Differences
1Department of Quantum Medical Technology, Kanazawa University; Kanazawa, Ishikawa, Japan - suzuki@mhs.mp.kanazawa-u.ac.jp.
Abstract:
The hippocampal sulcus remnant (HSR) is often observed at the medial temporal lobe on MR images. In the present study, we made a retrospective assessment of the frequency and age-related differences in HSR in routine brain MR examinations of 1000 patients, 494 females and 506 males. Cases with one or several spots that were hypointense on T1-weighted and FLAIR images and hyperintense on T2-weighted images were defined as positive for HSR. Abnormal spots with the same intensity as cerebrospinal fluid were observed in 210 out of 506 males and in 193 out of 494 females. No significant sex-related differences were observed in the frequency of HSR. The HSR was seen more frequently with age in both males and females. Patients with hypertension had a significantly higher frequency of HSR.
