CAJ | 학술논문

目的应用超声造影(CEUS)、磁共振(MRI)观察正常兔肾射频消融灶的影像表现,并与大体病理进行对照,探讨超声造影、MRI在正常肾射频消融效果评估中的价值.方法 10只新西兰大白兔行肾经皮射频消融术,分别在射频术后1d、1周行超声造影及MRI检查,并与大体标本消融灶的测量结果进行比较.结果在射频消融术后较短时间内(术后1d和1周),超声造影和增强MRI可以清晰地显示肾消融灶的部位、形态及范围,影像表现与大体标本、超声造影与增强MRI测量结果比较,差异均无统计学意义(P＞0.05).结论超声造影和增强MRI均适用于肾射频消融灶短期情况的观察评价,超声造影可以实时动态地显示消融灶血流灌注的变化.
목적 응용초성조영(CEUS)、자공진(MRI)관찰정상토신사빈소융조적영상표현,병여대체병리진행대조,탐토초성조영、MRI재정상신사빈소융효과평고중적개치.방법 10지신서란대백토행신경피사빈소융술,분별재사빈술후1d、1주행초성조영급MRI검사,병여대체표본소융조적측량결과진행비교.결과 재사빈소융술후교단시간내(술후1d화1주),초성조영화증강MRI가이청석지현시신소융조적부위、형태급범위,영상표현여대체표본、초성조영여증강MRI측량결과비교,차이균무통계학의의(P＞0.05).결론 초성조영화증강MRI균괄용우신사빈소융조단기정황적관찰평개,초성조영가이실시동태지현시소융조혈류관주적변화.
Objective To evaluate the accuracy of the modalities in revealing the results by observing the radiofrequency ablated (RFA) lesions with contrast-enhanced ultrasonography (CEUS),magnetic resonance image (MRI) in comparison with histopathologic findings in normal rabbit kidney.Methods RFA was performed in the left kidneys of 10 rabbits.The ablated lesions were observed with conventional ultrasound(US),CEUS,MRI at 1 day,1 week after RFA.Then the rabbits subjected to postmortem and the kidney specimens were excised,stained and processed for conventional histologic study.The maximum lesion size as measured on US,CEUS and MRI was then correlated with the histopathologically determined lesion size.The utility of different imaging modalities were evaluated.Results In a relatively short time (at 1 day and 1 week),CEUS and MRI may reveal the location,shape and extent of ablated lesion.And the lesion sizes with CEUS,MRI and kidney specimens were well correlated (P＞0.05).Conclusions Both CEUS and MRI are suitable for the accurate evaluation of the ablated lesions in the short time.CEUS can reveal the variation of flow perfusion in the ablated lesion dynamicly and in real time.