Pre-operative uterine artery embolization before hysterectomy or myomectomy: a single-center review of 53 patients.

Purpose: To assess outcomes of planned pre-operative uterine artery embolization (UAE) in patients with uterine fibroids at high risk for bleeding prior to hysterectomy or myomectomy.

Materials & Methods: A retrospective review of 53 consecutive patients who underwent planned UAE followed by surgery from 2004 to 2019 was performed in a subset of patients deemed high risk for bleeding by the referring surgeon due to bulky fibroids and/or adhesions. Characteristics of the largest fibroid, total number of fibroids, embolic agents, estimated blood loss (EBL), complications, and other factors were collected.

Effect of computed tomography angiography prior to bronchial embolization on radiation dose and recurrent hemoptysis.

Purpose: To investigate whether pre-procedure Computed Tomography Angiography (CTA) improves radiation exposure, procedure complexity, and symptom recurrence after bronchial embolization for massive hemoptysis.

Material And Methods: A single-center retrospective review of bronchial artery embolization (BAE) for massive hemoptysis was performed for procedures between 2008 and 2019. Multi-variate analysis was performed to determine the significance of pre-procedure CTA and etiology of hemoptysis on patient radiation exposure (reference point air kerma, RPAK) and rate of recurrent hemoptysis.

Transvenous Biopsies - Technique, Pearls, and Pitfalls.

Image-guided biopsies are one of the most common requests received by radiologists, and while most are straightforward, some lesions are not amenable to percutaneous sampling due to location or depth. Advances in intravascular ultrasound combined with the principles of non-targeted transvenous solid organ biopsy allow for direct visualization and successful targeted transvenous biopsies of solid organ and perivascular lesions. Here, we present our technique and three example cases of transvenous biopsies.

Management of Acute, Complicated Type B Aortic Dissection.

Management of acute complicated Type B aortic dissection (TBAD) requires a multidisciplinary approach with careful evaluation and understanding of the complicating features. Patients who present with or progress to a complicated TBAD must be triaged and managed rapidly due to the high morbidity and mortality even in the presence of optimal medical, endovascular, and open therapies. When required, invasive therapies can be broken down most simply into four treatments: thoracic endograft placement, aortic fenestration, branch vessel stenting, and open repair.

Predictive Value of Preprocedural Computed Tomography Angiography for the Technical Success of Transarterial Embolization of Type II Endoleaks Arising from the Lumbar Arteries.

Purpose: To evaluate the ability of preprocedural computed tomography angiography (CTA) to predict the technical success of embolization of type II endoleak arising from a lumbar artery after endovascular aortic repair (EVAR).

Materials And Methods: All patients at a single academic institution who underwent angiography with possible embolization for a post-EVAR lumbar-supplied type II endoleak from 2009 to 2018 were retrospectively reviewed. Patients who did not undergo CTA before the procedure were excluded.

Thoracic Aortic Emergencies: Presenting Pathologies and Treatment Strategies.

Thoracic aortic emergencies reflect a wide range of etiologies, pathologic processes, and clinical presentations. Accurate identification with an appropriate treatment algorithm is best accomplished in a multidisciplinary setting with interventional radiologists, vascular surgeons, and cardiothoracic surgeons. While knowledge of thoracic stent graft equipment and technique is essential in the treatment of thoracic aortic emergencies, many clinical settings may employ alternative treatment techniques.

Suprarenal Inferior Vena Cava Filter Placement and Retrieval: Safety Analysis.

Purpose: To evaluate safety and retrieval success of retrievable suprarenal inferior vena cava (IVC) filters.

Materials And Methods: A retrospective chart review of patients who received a retrievable suprarenal IVC filter between January 2008 and December 2017 was conducted. Suprarenal IVC filters were placed in 24 female and 27 male patients.

Spontaneous Rectus Sheath Hematoma: Factors Predictive of Conservative Management Failure.

Purpose: To evaluate radiographic, laboratory, and clinical factors associated with conservative management (CM) failure in spontaneous rectus sheath hematoma (RSH).

Materials And Methods: Retrospective review of 72 patients with spontaneous RSH between 2006 and 2017 was performed. Patients were initially managed conservatively and then divided into 2 groups based on decision to embolize.

Predictors of All-Cause Mortality after Endovascular Aneurysm Repair: Assessing the Role of Psoas Muscle Cross-Sectional Area.

Purpose: To evaluate psoas muscle area (PMA) as a predictor of all-cause mortality after endovascular aneurysm repair (EVAR) and compare it with other predictor variables.

Material And Methods: Retrospective review of 407 patients who underwent EVAR over a 7-year period was performed. Demographics, comorbidity variables, and outcomes were collected.

Impact of Venous Collaterals on Clinical Outcomes in Paget-Schroetter Syndrome.

Purpose: To characterize the degree of venous collateralization before and after endovascular therapy and determine the effect of collateralization on success of thrombolysis and rate of repeat intervention in patients with Paget-Schroetter syndrome.

Materials And Methods: A single-center retrospective study of 37 extremities in 36 patients (mean age, 32.64 y; range, 15-72 y; 24 men) with PSS treated with endovascular therapy from 2007 through 2017 was conducted.

Long Chronic Total Occlusions: Revascularization Strategies.

The treatment of chronic total occlusions (CTO) in patients with peripheral arterial disease (PAD) is a complex topic with multiple treatment techniques and treatment strategies. The interventionalist treating patients with PAD should have both a defined treatment algorithm and multiple techniques available for crossing these challenging lesions. This article will cover techniques for treating CTOs and provide an overview of current available evidence.

Outcomes of Percutaneous Management of Anastomotic Ureteral Strictures in Renal Transplantation: Chronic Nephroureteral Stent Placement with and without Balloon Dilatation.

Purpose: This study was designed o evaluate outcomes of percutaneous management of anastomotic ureteral strictures in renal transplants using nephroureteral stents with or without balloon dilatation.

Methods: A retrospective audit of 1,029 consecutive renal transplants was performed. Anastomotic ureteral strictures were divided into two groups: nephroureteral stent only (NUS) and NUS+PTA (nephroureteral stent plus percutaneous transluminal angioplasty), with each cohort subdivided into early versus late presentation (obstructive uropathy occurring <90 day or >90 days from transplant, respectively).

Characteristics of modified Cab-O-Sil in aqueous media.

Fumed silica Cab-O-Sil HS-5 grafted with 3-aminopropyldimethylsilyl (APDMS), butyldimethylsilyl (BDMS), octadecyldimethylsilyl (ODDMS), and trimethylsilyl (TMS) groups of different concentrations were studied using photon correlation spectroscopy, electrophoresis, potentiometric titration, and nitrogen adsorption methods. Calculations of both electrophoretic mobility and zeta potential were performed taking into consideration the topological structure of "porous" aggregates of primary particles of fumed silica using two different approaches. Changes in surface charge density and the textural, aggregative, and electrophoretic characteristics of modified silicas depend on the type of grafted OSC, its chain length, polarity, and surface concentration.

Structural and energetic characteristics of silicas modified by organosilicon compounds.

Silica gels Davisil 633 and 643, and fumed silica Cab-O-Sil HS-5 with grafted 3-aminopropyl dimethylsilyl (APDMS), butyl dimethylsilyl (BDMS), octadecyl dimethylsilyl (ODDMS), and trimethylsilyl (TMS) groups of different concentrations were studied using the nitrogen adsorption method. Changes in the textural and energetic characteristics of modified silicas depend on features of the oxide matrices and grafted OSC.