目的:探究超声造影与核磁共振成像(contrast-enhanced ultrasound and magnetic resonance imaging, MRI)在诊断乳腺叶状肿瘤(phyllodes tumor of the breast, PTB)良恶性方面的诊断效能。方法:回顾性分析39例PTB(病理诊断)的超声造影和...目的:探究超声造影与核磁共振成像(contrast-enhanced ultrasound and magnetic resonance imaging, MRI)在诊断乳腺叶状肿瘤(phyllodes tumor of the breast, PTB)良恶性方面的诊断效能。方法:回顾性分析39例PTB(病理诊断)的超声造影和MRI特征,比较两种检查方法的诊断效能。结果:良性叶状肿瘤27例,交界性5例,恶性7例。PTB超声造影多呈向心性不均匀高增强伴灌注缺损、增强后边界清晰,其中增强强度、灌注缺损在三组间差异明显(P=0.015、0.009)。PTB的MRI特征以T2WI低信号裂隙、强化不均匀及Ⅱ型TIC曲线类型为主;且T2WI低信号分隔、强化特征及ADC值差异具有统计学意义(P=0.027、0.001、0.042)。MRI对PTB的诊断效能高于CEUS,但差异无统计学意义。结论:超声造影在PTB的表现上具有一定特征性,在诊断PTB良恶性方面与MRI具有较好的一致性。展开更多
In this study, mitotic metaphase chromosomes in mouse were identified by a new chromosome fluorescence banding technique combining DAPI staining with image analysis. Clear 4＇, 6-diamidino-2-phenylindole （DAPI） mult...In this study, mitotic metaphase chromosomes in mouse were identified by a new chromosome fluorescence banding technique combining DAPI staining with image analysis. Clear 4＇, 6-diamidino-2-phenylindole （DAPI） multiple bands like （J-hands could be produced in mouse. The Meta- Morph software was then used to generate linescans of pixel intensity for the banded chromosomes from short arm to long arm. These linescans were sufficient not only to identify each individual chromosome but also analyze the physical sites of bands in chromosome. Based on the results, the clear and accurate karyotype of mouse metaphase chromosomes was established. The technique is therefore considered to he a new method for cytological studies of mouse.展开更多
文摘目的:探究超声造影与核磁共振成像(contrast-enhanced ultrasound and magnetic resonance imaging, MRI)在诊断乳腺叶状肿瘤(phyllodes tumor of the breast, PTB)良恶性方面的诊断效能。方法:回顾性分析39例PTB(病理诊断)的超声造影和MRI特征,比较两种检查方法的诊断效能。结果:良性叶状肿瘤27例,交界性5例,恶性7例。PTB超声造影多呈向心性不均匀高增强伴灌注缺损、增强后边界清晰,其中增强强度、灌注缺损在三组间差异明显(P=0.015、0.009)。PTB的MRI特征以T2WI低信号裂隙、强化不均匀及Ⅱ型TIC曲线类型为主;且T2WI低信号分隔、强化特征及ADC值差异具有统计学意义(P=0.027、0.001、0.042)。MRI对PTB的诊断效能高于CEUS,但差异无统计学意义。结论:超声造影在PTB的表现上具有一定特征性,在诊断PTB良恶性方面与MRI具有较好的一致性。
文摘In this study, mitotic metaphase chromosomes in mouse were identified by a new chromosome fluorescence banding technique combining DAPI staining with image analysis. Clear 4＇, 6-diamidino-2-phenylindole （DAPI） multiple bands like （J-hands could be produced in mouse. The Meta- Morph software was then used to generate linescans of pixel intensity for the banded chromosomes from short arm to long arm. These linescans were sufficient not only to identify each individual chromosome but also analyze the physical sites of bands in chromosome. Based on the results, the clear and accurate karyotype of mouse metaphase chromosomes was established. The technique is therefore considered to he a new method for cytological studies of mouse.
