The intravoxel incoherent motion MRI of lateral pterygoid muscle: a quantitative analysis in patients with temporomandibular joint disorders
| Autor: | Shin Nakamura, Shinya Kotaki, Supak Ngamsom, Akemi Tetsumura, Tohru Kurabayashi, Junichiro Sakamoto |
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| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
Adult
Male Lateral pterygoid muscle 030218 nuclear medicine & medical imaging 03 medical and health sciences 0302 clinical medicine Imaging Three-Dimensional stomatognathic system Image Interpretation Computer-Assisted Temporomandibular Joint Disorder Medical imaging Medicine Humans Radiology Nuclear Medicine and imaging Prospective Studies General Dentistry Intravoxel incoherent motion medicine.diagnostic_test business.industry Echo-Planar Imaging Magnetic resonance imaging Pterygoid Muscles 030206 dentistry General Medicine Anatomy Middle Aged Temporomandibular Joint Disorders Magnetic Resonance Imaging Temporomandibular joint stomatognathic diseases medicine.anatomical_structure Diffusion Magnetic Resonance Imaging Otorhinolaryngology Female business Diffusion MRI Research Article |
| Popis: | To quantitatively evaluate diffusion and perfusion status of lateral pterygoid muscle (LPM) in patients with temporomandibular joint disorder (TMD) by intravoxel incoherent motion (IVIM) imaging and to correlate with findings on temporomandibular joints (TMJs) by conventional MRI.42 patients with TMD underwent MRI. To assess IVIM parameters, diffusion-weighted imaging was obtained by spin-echo-based single-shot echoplanar imaging. Regions of interest were created on all diffusion-weighted images of the superior belly of the lateral pterygoid (SLP) and inferior belly of the lateral pterygoid (ILP) at b-values 0-500 s mmFor SLP, the f parameter in TMJs with anterior disc displacement without reduction was significantly higher than that in normal ones (p = 0.015). It was also significantly higher in TMJs with joint effusion than in those without (p = 0.016). On the other hand, for both SLP and ILP, the D parameter significantly increased in TMJs with osteoarthritis compared with those without (p = 0.015 and p = 0.022, respectively).Pathological changes of LPM in patients with TMD may be quantitatively evaluated by IVIM parameters. |
| Databáze: | OpenAIRE |
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