Susceptibility Weighted Imaging (SWI) and Gre T2* Imaging in the Diagnosis of Cerebral Cavernous Malformations: Our 3 Tesla Experience

Year 2022, , 17 - 21, 29.04.2022

Bünyamin Güney , Önder Yeniçeri , Emrah Doğan , Neşat Çullu

https://doi.org/10.47572/muskutd.759198

Abstract

This study compares the visibility and morphological dimensionality of lesions in cerebral cavernous malformations (CCM) with SWI images and Gradient Echo T2*(GRE T2*) images for both sequences. A total of 57 patients with CCM (32 males, 25 females) aged between 14 and 80 (42.4±17.58) were included in our study. In cranial MR imaging, in addition to routine sequences, SWI and GRE T2* imaging were performed. CCMs were re-evaluated retrospectively in terms of the number, size and visibility of the lesions taken. The number of CCM detected in SWI imaging (n=97) was higher than those detected in GRE T2* images (n=69). The median (min-max) size of the lesions was 7.9 (3.7-45) mm in SWI images and 7.7 (3.6-42) mm in GRE T2 * images, and the difference was statistically significant (p<0.001). In addition, developmental venous anomaly accompanying CCM in 7 cases and focal type superficial siderosis accompanied in 4 cases were detected in our study. Focal-type SS findings accompanying CCM were more sharply and more detailed in SWI imaging. It is recommended in many studies in the literature to add SWI sequence to routine cranial MR imaging due to its diagnostic superiority in patients with SCM. In addition to the current literature, we found in this study that the SWI sequence showed lesions morphologically larger than the images taken in the GRE T2* sequence. Moreover, SWI imaging had a definitive diagnostic superiority compared to GRE T2* imaging in the detection of occult vascular malformation accompanying SCM and in the diagnosis of accompanying focal type superficial siderosis.

Keywords: 

Keywords

Cavernous Malformation, GRE T2*, SWI, 3 Tesla

Serebral Kavernöz Malformasyonların Tanısında Duyarlılık Ağırlıklı ve Gre T2* Görüntüleme: 3 Tesla Deneyimimiz

Abstract

Bu çalışma serebral kavernöz malformasyonların (SKM), SWI ve Gradient eko T2* (GRE T2*) görüntülerde saptanabilirliği ve lezyonların her iki sekanstaki boyutsal farklılıklarının karşılaştırılmasıdır. Çalışmamıza yaşları 14 ile 80 (42.4±17.58) arasında değişen toplam 57 SKM'li hasta (32 erkek, 25 kadın) dahil edildi. Kranial MR görüntülemede, rutin sekanslara ek olarak SWI ve GRE T2* görüntüleme yapıldı. SKM lezyonlarının sayısı, boyutu ve alınan sekansta görülebilirliği açısından retrospektif olarak tekrar değerlendirildi. SWI görüntülemede saptanmış SKM sayısı (n=97), GRE T2* görüntülerde saptananlara (n=69) göre yüksekti. Lezyonların medyan (min-max) boyutu, SWI görüntülerde 7.9 (3.7-45) mm, GRE T2* görüntülerde 7.7 (3.6-42) mm olup aradaki fark istatistiksel olarak anlamlıydı (p<0.001). Ayrıca çalışmamızda 7 olguda SKM’ye eşlik eden gelişimsel venöz anomali ve 4 olguda eşlik eden fokal tip yüzeyel siderozis saptandı. SKM’ye eşlik eden fokal tip yüzeyel siderozis bulgusu SWI görüntülemede daha keskin ve ayrıntılı izlendi. SKM düşünülen olgularda tanısal üstünlüğü nedeni ile rutin kranial MR görüntülemeye SWI sekansı eklenmesi literatürde pek çok çalışmada önerilmektedir. Biz bu çalışmada mevcut literatüre ek olarak, SWI sekansının GRE T2* sekansında alınan görüntülere kıyasla lezyonları morfolojik olarak daha büyük gösterdiğini saptadık. Ayrıca SWI görüntüleme, SKM’ye eşlik eden okkült vasküler malformasyon saptanmasında ve fokal tip yüzeyel siderozis tanısında GRE T2* görüntülemeye kıyasla kesin bir tanısal üstünlüğe sahiptir.

Keywords

GRE T2*, Kavernöz Malformasyon, SWI, 3 Tesla

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