Occasionally systemic complications with high risk of death,such as multiple organ dysfunction syndrome(MODS),can occur following multiple bee stings.This case study reports a patient who presented with MODS,i.e.,acut...Occasionally systemic complications with high risk of death,such as multiple organ dysfunction syndrome(MODS),can occur following multiple bee stings.This case study reports a patient who presented with MODS,i.e.,acute kidney injury,hepatic and cardiac dysfunc-tion,after multiple bee stings.The standard clinical findings were then correlated with magnetic resonance imaging(MRI)findings,which demonstrates that MRI may be utilized as a simpler tool to use than other mul-tiple diagnostics.展开更多
Imaging of the temporomandibular joint(TMJ) is continuously evolving with advancement of imaging technologies. Many different imaging modalities are currently used to evaluate the TMJ. Magnetic resonance imaging is co...Imaging of the temporomandibular joint(TMJ) is continuously evolving with advancement of imaging technologies. Many different imaging modalities are currently used to evaluate the TMJ. Magnetic resonance imaging is commonly used for evaluation of the TMJ due to its superior contrast resolution and its ability to acquire dynamic imaging for demonstration of the functionality of the joint. Computed tomography and ultrasound imaging have specific indication in imaging of the TMJ. This article focuses on state of the art imaging of the temporomandibular joint. Relevant normal anatomy and biomechanics of movement of the TMJ are discussed for better understanding of many TMJ pathologies. Imaging of internal derangements is discussed in detail. Different arthropathies and commontumors are also discussed in this article.展开更多
Background:Texture features were the intrinsic properties of the human tissues and could efficiently detect the subtle functional changes of involved tissue.The pathologic changes of the lateral pterygoid muscle(LPM)w...Background:Texture features were the intrinsic properties of the human tissues and could efficiently detect the subtle functional changes of involved tissue.The pathologic changes of the lateral pterygoid muscle(LPM)were significantly correlated with the temporomandibular disc displacement.However,the occult functional changes of LPM could not be detected by the naked eye on the medical images.The current study was aimed to evaluate the functional changes of the LPM in the patients with temporomandibular disorders(TMDs)using texture analysis.Methods:Twenty-nine patients with TMD were performed with magnetic resonance(MR)imaging on a 3.0T MR scanner,who were consecutively recruited from the TMD clinic of Hainan Hospital of Chinese People’s Liberation Army General Hospital from February 2019 to September 2019.The patients were classified into three groups according to the disc displacement:disc without displacement(DWoD),disc displacement with reduction(DDWR)and disc displacement without reduction(DDWoR).The graylevel co-occurrence matrix method was applied with the texture analysis of LPM on the axial T2-weighted imaging.The texture features included angular second moment,contrast,correlation,inverse different moment,and entropy.One-way analysis of variance was used for grouped comparisons and receiver operating characteristics(ROC)curve analysis was applied to evaluate the diagnostic efficacy of the texture parameters.Results:Texture contrast of LPM presented significantly lower in DDWoR(46.30[35.03,94.48])than that in DWoD(123.85[105.06,143.23];test statistic=23.05;P<0.001).Texture entropy of LPM showed significant differences among DWoD(7.62±0.33),DDWR(6.76±0.35),and DDWoR(6.46±0.39)(PDWoD-DDWR<0.001,PDWoD-DDWoR<0.001,and PDDWR-DDWoR=0.014).Area under the ROC curve(AUC)demonstrated that texture entropy had an excellent diagnostic accuracy for DWoD-DDWR(AUC=0.96)and DWoD-DDWoR(AUC=0.98).Conclusion:The texture contrast and entropy could identify the altered functional status of LPM in patients withTMDand could be considered as the effective imaging biomarker to evaluate the functional changes of LPM in TMD.展开更多
文摘Occasionally systemic complications with high risk of death,such as multiple organ dysfunction syndrome(MODS),can occur following multiple bee stings.This case study reports a patient who presented with MODS,i.e.,acute kidney injury,hepatic and cardiac dysfunc-tion,after multiple bee stings.The standard clinical findings were then correlated with magnetic resonance imaging(MRI)findings,which demonstrates that MRI may be utilized as a simpler tool to use than other mul-tiple diagnostics.
文摘Imaging of the temporomandibular joint(TMJ) is continuously evolving with advancement of imaging technologies. Many different imaging modalities are currently used to evaluate the TMJ. Magnetic resonance imaging is commonly used for evaluation of the TMJ due to its superior contrast resolution and its ability to acquire dynamic imaging for demonstration of the functionality of the joint. Computed tomography and ultrasound imaging have specific indication in imaging of the TMJ. This article focuses on state of the art imaging of the temporomandibular joint. Relevant normal anatomy and biomechanics of movement of the TMJ are discussed for better understanding of many TMJ pathologies. Imaging of internal derangements is discussed in detail. Different arthropathies and commontumors are also discussed in this article.
基金supported by the key research and develop projects in Hainan Province(No.ZDYF2017008).
文摘Background:Texture features were the intrinsic properties of the human tissues and could efficiently detect the subtle functional changes of involved tissue.The pathologic changes of the lateral pterygoid muscle(LPM)were significantly correlated with the temporomandibular disc displacement.However,the occult functional changes of LPM could not be detected by the naked eye on the medical images.The current study was aimed to evaluate the functional changes of the LPM in the patients with temporomandibular disorders(TMDs)using texture analysis.Methods:Twenty-nine patients with TMD were performed with magnetic resonance(MR)imaging on a 3.0T MR scanner,who were consecutively recruited from the TMD clinic of Hainan Hospital of Chinese People’s Liberation Army General Hospital from February 2019 to September 2019.The patients were classified into three groups according to the disc displacement:disc without displacement(DWoD),disc displacement with reduction(DDWR)and disc displacement without reduction(DDWoR).The graylevel co-occurrence matrix method was applied with the texture analysis of LPM on the axial T2-weighted imaging.The texture features included angular second moment,contrast,correlation,inverse different moment,and entropy.One-way analysis of variance was used for grouped comparisons and receiver operating characteristics(ROC)curve analysis was applied to evaluate the diagnostic efficacy of the texture parameters.Results:Texture contrast of LPM presented significantly lower in DDWoR(46.30[35.03,94.48])than that in DWoD(123.85[105.06,143.23];test statistic=23.05;P<0.001).Texture entropy of LPM showed significant differences among DWoD(7.62±0.33),DDWR(6.76±0.35),and DDWoR(6.46±0.39)(PDWoD-DDWR<0.001,PDWoD-DDWoR<0.001,and PDDWR-DDWoR=0.014).Area under the ROC curve(AUC)demonstrated that texture entropy had an excellent diagnostic accuracy for DWoD-DDWR(AUC=0.96)and DWoD-DDWoR(AUC=0.98).Conclusion:The texture contrast and entropy could identify the altered functional status of LPM in patients withTMDand could be considered as the effective imaging biomarker to evaluate the functional changes of LPM in TMD.
