Objective To explore the technique of implantation of double-J stent via the guide-wire track, which was established through percutaneous renal puncturing, for the treatment of ureteral stricture and obstruction, and to evaluate its therapeutic effect. Methods A total of 75 patients with ureteral stricture or obstruction, who failed to respond to cystoscopic catheterization, were enrolled in this study. The lesions included benign stricture(n=60) and malignant stricture(n=15). Ureteral guide-wire track was established through percutaneous renal puncturing, which was followed by the dilatation of the stricture with balloon catheter and subsequent implantation of double-J stent via the guide-wire track. After the double-J stent was removed, the patients were followed up for 3 months to five years. Results The success rate of the procedure was 98.7%(74/75). Technical failure occurred in one patient with benign ureteral stricture. The cure rate was 70.7%(53/75), the improvement rate was 26.7%(20/75), and no improvement was seen in one case (1.35%). The total effective rate was 97.3%(73/75). Conclusion For the treatment of ureteral stricture and obstruction, the implantation of double-J stent via the guide-wire track, which is established through percutaneous renal puncturing, is a safe and effective method.

Objective To explore the clinical effect of two-points approach vascular stenting technique (via both the femoral artery and posterior tibial artery of the affected side) in repairing blunt popliteal artery injuries.Methods The clinical data of eleven patients with blunt popliteal arterial injuries,who were treated with two-points approach vascular stenting technique during the period from March 2011 to March 2015 as single-approach stenting repair failed,were retrospectively analyzed.First,antegrade puncture of the femoral artery on the affected side with subsequent angiography was performed to evaluate the arterial injury,when the attempt to push the guide-wire to pass the injured arterial segment by twisting manipulation failed the puncture of posterior tibial artery was immediately carried out,then,a 4-French single-bend catheter together with a goose neck snare was inserted.Guide-wire capture technique was used to gasp the guide-wire in the injured artery segment,and then the guide-wire was pulled to pass through the injured artery segment.In this way,the guide-wire working circle was reliably established,and along the guide-wire the vascular stent was inserted and delivered to the right site to repair the injured artery.A 6-French guiding catheter was inserted to perform thrombus aspiration for eliminating the distal outflow obstruction caused by thrombus.Thrombolytic therapy with small dose of urokinase through a indwelling catheter was employed for the treatment of peripheral arterial thrombosis.Results The technical success rate was 100％.Angiography revealed that partial transection of artery was detected in 7 patients,and complete transection of artery in 4 patients.A total of 16 stents were implanted.No perioperative mortality or procedure-related complication occurred.All patients were followed up for 13-24 months,with a mean of (18.7±3.8) months.In-stent thrombosis occurred in 2 patients,which was treated with thrombolytic therapy and the blood flow recovered;severe in-stent stenosis (＞70％) was seen in 3 patients,in whom the blood flow returned to normal after balloon dilation therapy;mild in-stent stenosis (＜30％) was found in 6 patients,and no special treatment was given.During the follow-up period,no stent fracture,deformation,or displacement was seen,and no patient needed to have an amputation surgery.Conclusion In treating blunt popliteal artery injuries,two-points approach vascular stenting technique can effectively reduce the operation time,rapidly recover the blood flow of the injured popliteal artery,and shorten the time of limb ischemia.This technique has very satisfactory clinical shortterm effect.

ObjectiveTo explore the value of the diagnosis of breast cancer by acoustic elastography, conventional ultrasonography (including gray-scale ultrasonography, color Doppler flow imaging and Doppler spectrum) and mammography.MethodsOne hundred and four patients with breast disease conifrmed by surgical pathology were studied retrospectively in Zibo Maternal and Children Health Hospital. All the patients were examined by acoustic elastography, conventional ultrasonography and mammography before surgery.ResultsPathological results of 104 cases were: sixty-five malignanies and 39 benignities. The most common signs in the diagnosis of breast cancer by conventional ultrasonography were spicule sign (76.9%, 50/65), taller-than-wide sign (73.8%, 48/65), vascular resistance index>0.7 (70.8%, 46/65), calciifcation (53.8%, 35/65). And breast masses without these signs were regarded as benign lesions. The diagnostic criteria of breast cancer by acoustic elastography was 5-point method. We regarded the lesions got more than 3 points as malignancy. The most common signs in the diagnosis of breast cancer by mammography were dense shadow (73.8%, 48/65), spicule sign (70.8%, 46/65), calcification (69.2%, 45/65). And breast masses without these signs were regarded as benign lesions. The diagnostic accuracy of acoustic elastography, conventional ultrasonography, mammography, conventional ultrasound plus acoustic elastography, conventional ultrasound plus mammography and acoustic elastography plus mammography for breast tumor were 88.4% (92/104), 86.5% (90/104), 83.7% (87/104), 93.3% (97/104), 90.4% (94/104) and 89.4% (93/104), respectively. ConclusionsThe combination of any two imaging modalities can improve the diagnostic accuracy of breast cancer. And conventional ultrasound combined with acoustic elastography could be an effective method in the diagnosis of breast cancer.

Objective To explore the effect of transcatheter arterial chemoembolization ( TACE ) on the apoptosis proteins fas,bax,and bcl-xl in hepatocellular carcinoma ( HCC ) . Methods Sixty-three cases with HCC proved by histopathologically were studied, which included 42 cases treated with surgical resection alone,and 21 cases underwent TACE . The expressions of fas,bax,bcl-2 and bcl-xl were detected with immunohistochemical SP method .Results The positive rate of fas was 47.62% ( 10/21 ) in HCCs treated with TACE,and 21.43%(9/42) in those treated with surgical resection alone, there was significantly difference between the two groups(?0.05). Conclusion TACE can increase the expression of fas and decrease the expression of bcl-xl, it can increase the rate of apoptosis of HCC, make HCC lesion contract. The effect of TACE to bax need more research.

Objective To investigate the effect on the miemvnscular density(MVD)and the expression of vascular endothelial growth factor(VEGF)in VX2 tumor after transcatheter arterial chemoembolization(TACE)combined with endostatin.Methods The VX2 tumor model wag established.The rabbits bearing tunlor were randomly divided into three groups as the control group.TACE group and TACE combined with endostatin group.with 10 rabbits in each group.In the control group,normal saline was administered via the hepatic artery.In the TACE group,lipiodol(0.2 ml/kg)and ADM(2.g/kg)were administered.Lipiodol(0.2 ml/kg),ADM(2 mg/kg)and endostatin(2 mg/kg)were administered for each rabbit in the TACE combined with endostatin group.Seven days after operation,the rabbits were sacrificed and the tumors were removed.Immunohistochemistry wag performed to demonstrate the expression of VEGF and the MVD wag caleulated.The ANOVA wag used for statistics.Results The average absorbance values of VEGF were 0.130±0.038.0.200±0.049 and 0.120±0.047 respectively for the 3 groups.There was signiflcant difference among the three groups(F=9.42,P＜0.01).rnle expression of VEGF in the TACE group was the hiShest among the 3 groups.Compared with the otIler two groups,there had signifieant differences(q=4.93,5.63,P＜0.01).The average absorbance value of the TACE combined with endostatin group was lower than that of control group,but there was no significant difference between them(q=0.70,P＞0.05).The values of MVD were(80±17),(84±16)and(57±13)/HPF for the 3 groups respectivelv.There wag significant difference among them(F=8.70,P＜0.01).111e value of MVD in the TACE combined with endestatin group was the lowest, and there were significant differences when compared with the control group (q=4.63, P＜0.01) and the TACE group (q =5.48, P＜0.01).There was no significant difference between the control group and the TACE group (q = 0.85, P ＞ 0.05) in MVD.Conclusion Compared with chemoembolization only, ehemoembolization combined with endostatin can significantly depress the expression of VEGF and decrease the angiogenesis of the tumor.The combined method has a beneficial effect on prognosis of hepatic tumor.

Objective To evaluate the curative effect and security of mechanical thrombectomy with SolitaireAB stent system in acute superior mesenteric artery embolism(SMAE).Methods The clinical data of 5 cases who had undergone mechanical thrombectomy with SolitaireAB stent system under digital subtraction angiography (DSA) were analyzed retrospectively.Results A successful thrombus removal of superior mesenteric arterial by SolitaireAB stent system was observed in the whole 5 patients.The patients had recovered well after operation and no complications such as arterial dissection,perforation and hemorrhage or intestinal ischemia occurred.Conclusion The arterial mechanical thrombectomy with SolitaireAB stent system are characterized with high rate of recanalization,fine security,minimal invasion and less complications in patients with acute superior mesenteric arterial embolism.

This study was aimed to design a new, accurate and easy-to-use water bath cryo-jaw, and try to solve the problems met in small animals achilles tendon mechanical testing. The muscle-tendon-bony units were fixed in the clamps. SD rats achilles tendon were randomly divided into group A and B. Group A was tested by the newly designed water bath cryo-jaw, while group B was treated by non-water bath cryo-jaw. The mechanical tests revealed that non of the samples of the newly-designed water bath cryo-jaw in group A slipped and fell off, and the achilles tendons were in a physiologically active state, but one of the group B samples slipped and fell off, and the others had the frozen phenomenon obviously. The maximum stress, fracture displacement and Young's modulus of the rats in group A were significantly different compared to those in group B (P < 0.05). In conclusion, the new water bath cryo-jaw has more advantages than traditional ones. It exhibits a good simulation in vivo in the environmental conditions for testing the mechanical properties of the achilles tendon.
Achilles Tendon ; physiology ; Animals ; Biomechanical Phenomena ; Elastic Modulus ; Equipment Design ; In Vitro Techniques ; Rats ; Rats, Sprague-Dawley

The publisher and authors would like to draw the reader's attention to an error in the following article. Endovascular Repair of Blunt Popliteal Arterial Injuries. Korean J Radiol 2016;17(5):789-796.

Objective To compare and analyze the efficacy of PVA particles and Embosphere microspheres for partial splenic embolization (PSE)in the treatment of hypersplenism secondary to liver cirrhosis.Methods Sixty patients underwent PSE for treatment of hypersplenism secondary to liver cirrhosis were analyzed retrospectively.According to different PSE embolization materials,they were divided into two groups:30 patients with PVA particles embolization (group A),and other 30 patients with Embosphere microspheres embolization (group B).The changes of white blood cells (WBC),platelets (PLT),spleen thickness,portal vein diameter and postoperative pain and fever were compared on the 3rd day,the 1st week,the 3rd week,the 1st month,the 3rd month,and the 6th month after PSE and compared between the two groups.Results The WBC and PLT of the 2 groups after PSE were significantly higher than those before PSE (all P＜0.05 ).The spleen shrank after 2 months,and there was no significant difference in spleen thickness and portal vein diameter between the two groups at the same time (all P＞0.05).The postoperative pain in group A was significantly less than that in group B (P＜0.05).Conclusion Both PVA particles and Embosphere microspheres have good curative effect in the treatment of hypersplenism secondary to liver cirrhosis. The price of PVA particles is lower than that of Embosphere microspheres,and the postoperative pain degree is lighter than that of Embosphere microsphere,which suggests PVA particles with more advantages in clinical application.

OBJECTIVE: To evaluate the feasibility and effectiveness of endovascular repair for blunt popliteal arterial injuries. MATERIALS AND METHODS: A retrospective analysis of seven patients with clinical suspicion of popliteal arterial injuries that were confirmed by arteriography was performed from September 2009 to July 2014. Clinical data included demographics, mechanism of injury, type of injury, location of injury, concomitant injuries, time of endovascular procedures, time interval from trauma to blood flow restoration, instrument utilized, and follow-up. All patients were male (mean age of 35.9 ± 10.3 years). The type of lesion involved intimal injury (n = 1), partial transection (n = 2), complete transection (n = 2), arteriovenous fistula (n = 1), and pseudoaneurysm (n = 1). All patients underwent endovascular repair of blunt popliteal arterial injuries. RESULTS: Technical success rate was 100%. Intimal injury was treated with a bare-metal stent. Pseudoaneurysm and popliteal artery transections were treated with bare-metal stents. Arteriovenous fistula was treated with bare-metal stent and coils. No perioperative death and procedure-related complication occurred. The average follow-up was 20.9 ± 2.3 months (range 18-24 months). One patient underwent intra-arterial thrombolysis due to stent thrombosis at 18 months after the procedure. All limbs were salvaged. Stent migration, deformation, or fracture was not found during the follow-up. CONCLUSION: Endovascular repair seems to be a viable approach for patients with blunt popliteal arterial injuries, especially on an emergency basis. Endovascular repair may be effective in the short-term. Further studies are required to evaluate the long-term efficacy of endovascular repair.
Aneurysm, False ; Angiography ; Arteriovenous Fistula ; Demography ; Emergencies ; Endovascular Procedures ; Extremities ; Follow-Up Studies ; Humans ; Limb Salvage ; Male ; Popliteal Artery ; Radiology, Interventional ; Retrospective Studies ; Stents ; Thrombosis