目的比较研究高分辨率磁共振血管壁成像(high-resolution magnetic resonance imaging,HR-MRI)与数字减影血管造影(DSA)对颅内动脉狭窄和闭塞的诊断。方法选择2016年10月至2019年1月在某院就诊的颅内动脉狭窄患者72例,分别采用HR-MRI和...目的比较研究高分辨率磁共振血管壁成像(high-resolution magnetic resonance imaging,HR-MRI)与数字减影血管造影(DSA)对颅内动脉狭窄和闭塞的诊断。方法选择2016年10月至2019年1月在某院就诊的颅内动脉狭窄患者72例,分别采用HR-MRI和DSA对其进行颅内动脉狭窄的诊断,比较两种方式对不同程度颅内狭窄的诊断结果、不同形态斑块的诊断结果以及患者的满意度。结果HR-MRI和DSA都可以有效诊断不同程度的颅内动脉狭窄,两者在重度狭窄和闭塞上诊断结果保持一致,HR-MRI在轻度狭窄和中度狭窄的诊断上稍低于DSA,但是两者差异无统计学意义(P>0.05);高分辨磁共振血管壁成像(HR-MRI)在斑块形态诊断上准确率优于DSA(P<0.05)。结论HR-MRI和DSA对颅内动脉狭窄、闭塞患者的诊断结果都相对可靠,但是高分辨磁共振血管壁成像(HR-MRI)在斑块形态诊断以及患者满意度上具有明显优势,结果可为患者情况评估和治疗提供依据。展开更多
Objective: To measure the ocular volume and extraocular muscles of healthy people using the high-resolution magnetic reso-nance imaging (HR-MRI) technology, to provide parameters support for eye research, teaching and...Objective: To measure the ocular volume and extraocular muscles of healthy people using the high-resolution magnetic reso-nance imaging (HR-MRI) technology, to provide parameters support for eye research, teaching and diagnosis. Methods: The study collected 100 cases of normal subjects (200 eyes) from November 2012 to December 2013, including 50 males and 50 females, accepted line HR-orbital MRI, and image processing software was applied to morphology and statistical analysis. The extraocular muscles, muscle belly level horizontal diameter and maximum diameter vertical diameter were mea-sured. Results: The volume of the vitreous cavity (4.51 ± 0.26) cm3 had no significant difference with the anatomic normal value (p= .148);The volumes of the ocular globe, the anterior chamber and the lens cavity were (5.05 ± 0.21) cm3, (0.24 ± 0.26) cm3, (0.23 ± 0.14) cm3, with no statistic differences compared with those of the anatomic normal values. The extraocular muscles of normal Chinese were symmetrical on the two sides. The relationships of the short diameters of extraocular muscles in the maximum planes were: inferior rectus muscle (IR) > medial rectus muscle (MR) > superior rectus (SR) > lateral rectus muscle (LR). Those of the long diameters of extraocular muscles were: LR > MR > SR > IR. Conclusions: MRI can be used for measuring ocular volume and sizes of extraocular muscles. Compared with the anatomic normal value, the sizes of extraocular muscles can also be assessed by the symmetry on the two sides and by observing the usual rule of extraocular muscles.展开更多
文摘目的比较研究高分辨率磁共振血管壁成像(high-resolution magnetic resonance imaging,HR-MRI)与数字减影血管造影(DSA)对颅内动脉狭窄和闭塞的诊断。方法选择2016年10月至2019年1月在某院就诊的颅内动脉狭窄患者72例,分别采用HR-MRI和DSA对其进行颅内动脉狭窄的诊断,比较两种方式对不同程度颅内狭窄的诊断结果、不同形态斑块的诊断结果以及患者的满意度。结果HR-MRI和DSA都可以有效诊断不同程度的颅内动脉狭窄,两者在重度狭窄和闭塞上诊断结果保持一致,HR-MRI在轻度狭窄和中度狭窄的诊断上稍低于DSA,但是两者差异无统计学意义(P>0.05);高分辨磁共振血管壁成像(HR-MRI)在斑块形态诊断上准确率优于DSA(P<0.05)。结论HR-MRI和DSA对颅内动脉狭窄、闭塞患者的诊断结果都相对可靠,但是高分辨磁共振血管壁成像(HR-MRI)在斑块形态诊断以及患者满意度上具有明显优势,结果可为患者情况评估和治疗提供依据。
文摘Objective: To measure the ocular volume and extraocular muscles of healthy people using the high-resolution magnetic reso-nance imaging (HR-MRI) technology, to provide parameters support for eye research, teaching and diagnosis. Methods: The study collected 100 cases of normal subjects (200 eyes) from November 2012 to December 2013, including 50 males and 50 females, accepted line HR-orbital MRI, and image processing software was applied to morphology and statistical analysis. The extraocular muscles, muscle belly level horizontal diameter and maximum diameter vertical diameter were mea-sured. Results: The volume of the vitreous cavity (4.51 ± 0.26) cm3 had no significant difference with the anatomic normal value (p= .148);The volumes of the ocular globe, the anterior chamber and the lens cavity were (5.05 ± 0.21) cm3, (0.24 ± 0.26) cm3, (0.23 ± 0.14) cm3, with no statistic differences compared with those of the anatomic normal values. The extraocular muscles of normal Chinese were symmetrical on the two sides. The relationships of the short diameters of extraocular muscles in the maximum planes were: inferior rectus muscle (IR) > medial rectus muscle (MR) > superior rectus (SR) > lateral rectus muscle (LR). Those of the long diameters of extraocular muscles were: LR > MR > SR > IR. Conclusions: MRI can be used for measuring ocular volume and sizes of extraocular muscles. Compared with the anatomic normal value, the sizes of extraocular muscles can also be assessed by the symmetry on the two sides and by observing the usual rule of extraocular muscles.
