@article{article_349912, title={Evaluation of vascular variations at cerebellopontine angle by 3-dimensional T2-weighted magnetic resonance imaging in patients with tinnitus}, journal={Süleyman Demirel Üniversitesi Sağlık Bilimleri Dergisi}, volume={9}, pages={1–6}, year={2018}, DOI={10.22312/sdusbed.349912}, author={Beyazal Çeliker, Fatma and Dursun, Engin and Terzi, Suat and Çeliker, Metin and Özgür, Abdülkadir and Beyazal, Mehmet and Turan, Arzu and İnecikli, Mehmet Fatih}, keywords={Vascular loop,cerebellopontine angle,internal acoustic canal,tinnitus,magnetic resonance imaging}, abstract={<p class="MsoNormal" style="text-align:justify;line-height:200%;"> <b> <span lang="en-us" style="font-family:’Times New Roman’, serif;" xml:lang="en-us">Objective: </span> </b> <span lang="en-us" style="font-family:’Times New Roman’, serif;" xml:lang="en-us"> Anatomical interactions
of vascular and neural structures at cerebellopontine angle (CPA) are
considered related to auditory-vestibular symptoms. Magnetic resonance imaging
(MRI) has become the preferred method to visualize this complex anatomical
region. This study aimed to assess the relation of vascular loops at CPA with
clinical symptoms in patients with tinnitus using 3-dimensional (3D)
T2-weighted (T2W) MRI. <span style="background:#FFFF00;"> </span> </span> </p> <p> </p> <p class="MsoNormal" style="text-align:justify;line-height:200%;"> <b> <span lang="en-us" style="font-family:’Times New Roman’, serif;" xml:lang="en-us">Materials and Methods: </span> </b> <span lang="en-us" style="font-family:’Times New Roman’, serif;" xml:lang="en-us">The study included </span> <span lang="en-us" style="font-family:’Times New Roman’, serif;" xml:lang="en-us">476 patients, grouped as those with and without
tinnitus, undergoing MRI for various clinical auditory symptoms. MRI scans were
assessed regarding the presence of vascular abnormalities at CPA. </span> </p> <p> </p> <p class="MsoNormal" style="text-align:justify;line-height:200%;"> <b> <span lang="en-us" style="font-family:’Times New Roman’, serif;" xml:lang="en-us">Results: </span> </b> <span lang="en-us" style="font-family:’Times New Roman’, serif;" xml:lang="en-us"> For the patients with
tinnitus on the left side, the frequencies of Type 1 vascular loop (at the CPA
level) (p=0.001) and Type A vascular loop (contact with the vestibulocochlear
and facial nerves) (p<0.001) vascular loops were significantly higher. For
the patients with tinnitus on the right side, only the frequency of Type A
vascular loop was significantly higher (p=0.005). For the patients with
bilateral tinnitus, Type 2 vascular loop (proximal to the internal auditory
canal [IAC]) on the right side (p=0.035) and Type A vascular loop on the left
side (p<0.001) were significantly higher. <span style="background:#FFFF00;"> </span> </span> </p> <p> </p> <p> <b> <span lang="en-us" style="font-size:12pt;font-family:’Times New Roman’, serif;" xml:lang="en-us">Conclusion: </span> </b> <span lang="en-us" style="font-size:12pt;font-family:’Times New Roman’, serif;" xml:lang="en-us"> This study is the largest scale study
investigating the tinnitus etiology using 3D T2W MRI. The frequency of vascular
loops at the CPA and IAC primarily depends on the diagnostic technique. Our
results indicated that vascular causes could be shown more clearly with the use
of high-resolution imaging methods. Accordingly, treatment options can be
better determined by the clarification of etiology. </span> <br /> </p>}, number={1}, publisher={Süleyman Demirel University}