ABSTRACT
Objective To evaluate the effectiveness and safety of MRI-navigation system EMT-100 in assisting the performance of precise percutaneous puncture biopsy.Methods With the help of MRI-navigation system EMT-100,percutaneous puncture biopsy of thoracic and abdominal lesions was performed in 42 patients.The puncture success rate was used as the main index to evaluate the effectiveness of MRI-navigation system EMT-100.The success rate of puncture biopsy,the total time used for procedure,the average number of puncturing,the average number of scanning,and the incidence of complications were recorded.Results In the 42 patients,the success rates with single and twice puncturing were 86％ (36/42) and 14％ (6/42) respectively.The success rate of puncture biopsy was 100％.The mean time used for locating puncture site was (11.5±5.5) min;the average number of puncturing was (1.4±0.5) times,and the average number of scanningwas(4.2±0.8) times.Among the 32 patients with pulmonary lesions,bloody sputum occurred in 2 patients (6.2％) and small amount pneumothorax in one patient (3.1％),and no serious complications occurred in other patients.Conclusion In performing percutaneous puncture biopsy of thoracic and abdominal lesions,the use of MRI-navigation system is safe.This technique has certain advantages,such as accurate positioning,high puncture success rate,wide range of application,radiationless,etc.It can help precisely obtain the lesion tissue and get pathological diagnosis.Therefore,it is really a valuable guiding technology.(J Intervent Radiol,2017,26:263-265)
ABSTRACT
Objective To compare the puncturing hit rate,positive rate of pathological diagnosis and the incidence of complications between color Doppler ultrasound-guided and CT-guided percutaneous biopsy for the qualitative diagnosis of ultrasonic-visual chest lesions.Methods A total of 112 patients,who were encountered from January 2015 to June 2016 in authors' hospital and whose imaging materials suggested the presence of ultrasonic-visual chest lesions,were enrolled in this study.There were no bones or lung air between the thoracic skin and chest lesion to hinder imaging observation.Ultrasound-guided puncturing was employed in 52 patients (ultrasound-guided group) and CT-guided puncturing was adopted in 60 patients (CT-guided group).The puncturing hit rate,positive rate of pathological diagnosis and the incidence of complications were compared between the two groups.Results The puncturing hit rate in ultrasound-guided group was 100％ (52/52),which was higher than 91.7％ (55/60) in CT-guided group.The positive rate of pathological diagnosis in ultrasound-guided group was 96.2％ (50/52),which was higher than 80.0％ (48/60)in CT-guided group.The incidence of complications in ultrasound-guided group was 3.8％ (2/52),which was lower than 18.3％(11/60) in CT-guided group.Conclusion For the qualitative diagnosis of ultrasonic-visual chest lesions,ultrasound-guided percutaneous biopsy is more reliable than CT-guided percutaneous biopsy.