Functional popliteal artery entrapment syndrome can be difficult to diagnose, as the imaging modalities presently employed are designed to detect anatomic entrapment. We describe a novel imaging technique to aid in diagnosis in this cohort. A 22-year-old cyclist presented with exercise-limiting claudication. Magnetic resonance angiography with provocative maneuvers was nondiagnostic. Digital subtraction angiography revealed long-segment occlusion of the popliteal artery with plantar flexion; however, the specific site of compression remained unclear. Intravascular ultrasound allowed specific localization of compression and further confirmed the diagnosis. Thus, we report this as an adjunctive imaging modality to definitively diagnose functional popliteal artery entrapment syndrome and to assist in operative planning.

performed using PyTorch and 2 NVIDIA K80 GPUs. Receiver operating characteristic (ROC) curves with area under the curve (AUC) and standard diagnostic measures (e.g., sensitivity, specificity, accuracy) were used to evaluate the DCNN's performance. Results: The DCNN achieved AUC of 0.96 for detection of IVC filter. At optimal diagnostic thresholds, the DCNN achieved accuracy of 90.9% and sensitivity and specificity of 88.2% and 93.7%, respectively. Conclusions: A DCNN trained on a small set of images from similar but different imaging modalities (radiographs and fluoroscopic images) are able to automatically detect IVC filters with reasonable diagnostic performance. Our study demonstrates proof-of-concept of deep learning towards this task, which will likely be improved with the use of larger datasets as well as extending towards other types of Interventional devices and hardware.

± 3 45 mL infarct in patients with hematologic malignancies. The spleen volumes decreased by 40.5 ± 11% in 1 year. The platelet count increased from 63.9 ± 29.6 (mean ± SD) to peak platelet count of 248 ± 118 in 2-4 weeks after embolization. Patients with follow-up period of >1 year had the last platelet count of 174 ± 113 (n ¼ 12). The most common complication was moderate/severe pain which occurred in 92% of patients without celiac block and in 20% of patients with celiac block. There was non-occlusive portal vein thrombus in 2 patients, pulmonary embolus in 1 patient, focal pancreatitis in 1 patient, and increased ascites and pleural effusion in 7 patients. Procedure-related 30-day mortality was 25% amongst patients with hematologic malignancies and 0% amongst patients with chemotherapy-or portal hypertension-induced splenomegaly. Conclusions: Partial splenic embolization is effective to correct thrombocytopenia in cancer patients and provides improved platelet count for long-term. It is a low risk procedure in patients with chemotherapy-or portal hypertension-induced splenomegaly, but has high mortality in hematologic malignancies. The postprocedural pain was significantly reduced by celiac plexus block. Based on our data the required amount of beads can be calculated to achieve target splenic infarct.

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Obstructive uropathy Ureteral anastomotic strictures Percutaneous nephrostomy Transplant ureteral strictures Renal transplant complications a b s t r a c t Purpose: To evaluate outcomes of percutaneous nephrostomies (PCN) in renal transplant recipients, and compare outcomes of PCN placement before and after 30 days from transplant. Material and methods: A retrospective audit of 1041 transplants undergoing PCN was performed. PCN population was classified into early-PCN and late-PCN groups (<30/>30 days from transplant). Graft survival (GS) was compared between early/late groups and transplants with and without PCN.Results: 79 (7.6%, n ¼ 79/1041) transplants underwent 89 PCN procedures. 67 (75%, n ¼ 67/89) underwent nephroureteral stent (NUS) placement and 12 (25%, n ¼ 12/89) were simple PCN placements. Procedure-related complications in early-vs. late-PCN were 4.3%, (n ¼ 1/23) and 3.0% (n ¼ 2/66) p > 0.05. Catheter-related complications in early-PCN vs. late-PCN were 13%, (n ¼ 3/23) and 11% (n ¼ 7/66) p > 0.05. Graft survival at 12, 36, and 48 months after PCN placement for early-PCN vs. late-PCN was 86% ± 7, 81 ± 8, and 81 ± 10 vs. 93% ± 3, 75 ± 8, and 66 ± 9, respectively (p ¼ 0.50). Graft survival at 1, 4, and 10 years after transplant in early-PCN vs. late-PCN was 86% ± 7, 86 ± 8, and 29% ± 17 vs. 96% ± 2, 81 ± 6, and 61 ± 13, respectively (p ¼ 0.01). Graft survival for all PCN vs. no-PCN transplants at 1, 4, and 10 years were 94% ± 3, 83% ± 5, and 55% ± 11 vs. 92% ± 1, 80% ± 1, and 59% ± 3, respectively (p ¼ 0.50).Conclusion: PCN in renal transplantation is safe and effective with no effect on graft survival. Early PCN poses no additional risk to the graft; however, it is a poor prognostic indicator for long-term graft survival.