An updated classification of the anatomical variations of the internal iliac venous drainage system: Surgical implications for anterior lumbar spinal approaches.

Background: Advanced pelvic surgery is associated with potential vascular risks. The aim of this study was to complete the existing classification of the anatomical variations of the internal iliac veins encountered on a series of preoperative angio CT with a view to performing anterior lumbar spine surgery.

Materials And Methods: In this monocentric retrospective study conducted between 2010 and 2020, all preoperative angio CT performed before an anterior lumbar surgery were systematically analyzed.

French Imaging Database Against Coronavirus (FIDAC): A large COVID-19 multi-center chest CT database.

Purpose: During the first wave of the COVID-19 pandemic, the French Society of Radiology and the French College of Radiology, in partnership with NEHS Digital, have set up a system to collect chest computed tomography (CT) examinations with clinical, virological and radiological metadata, from patients clinically suspected of COVID-19 pneumonia. This allowed the constitution of an anonymized multicenter database, named FIDAC (French Imaging Database Against Coronavirus). The aim of this report was to describe the content of this public database.

Prevalence of Thoracic Aortic Aneurysms in Patients with Degenerative Abdominal Aortic Aneurysms: Results from the Prospective ACTA Study.

Objective: There are no recommendations for screening for thoracic aortic aneurysms (TAAs), even in patients with infrarenal abdominal aortic aneurysms (AAAs). The aims of this study were to determine the prevalence of TAAs in patients with AAAs and to analyse the risk factors for this association.

Methods: This was a multicentre prospective study.

Efficacy of Chest CT for COVID-19 Pneumonia Diagnosis in France.

Background The role and performance of chest CT in the diagnosis of the coronavirus disease 2019 (COVID-19) pandemic remains under active investigation. Purpose To evaluate the French national experience using chest CT for COVID-19, results of chest CT and reverse transcription polymerase chain reaction (RT-PCR) assays were compared together and with the final discharge diagnosis used as the reference standard. Materials and Methods A structured CT scan survey (NCT04339686) was sent to 26 hospital radiology departments in France between March 2, 2020, and April 24, 2020.

COVID-19 impact assessment on the French radiological centers: a nationwide survey.

Purpose: To determine the impact of the COVID-19 on the CT activities in French radiological centers during the epidemic peak.

Materials And Methods: A cross-sectional prospective CT scan survey was conducted between March 16 and April 12, 2020, in accordance with the local IRB. Seven hundred nine radiology centers were invited to participate in a weekly online survey.

Combining Volumetric and Wall Shear Stress Analysis from CT to Assess Risk of Abdominal Aortic Aneurysm Progression.

Background Despite known limitations, the decision to operate on abdominal aortic aneurysm (AAA) is primarily on the basis of measurement of maximal aneurysm diameter. Purpose To identify volumetric and computational fluid dynamics parameters to predict AAAs that are likely to progress in size. Materials and Methods This study, part of a multicenter prospective registry (NCT01599533), included 126 patients with AAA.

[Emborrhoid: Rectal arteries embolization for hemorrhoid treatment].

Although hemorrhoids are recognized as a very common cause of rectal bleeding and known for a long time, its treatment has evolved dramatically over the last twenty years. Among the new minimally invasive methods, the "Emborrhoid" technique consists into selective embolization of hemorrhoidal arteries, branches arising from the superior rectal arteries using microcoils. This technique is based on a demonstrated pathophysiological concept of arterial network hypertrophy in hemorrhoid disease.

Outcomes of Pulmonary Artery Embolization and Stent Graft Placement for the Treatment of Hemoptysis Caused by Lung Tumors.

Purpose: To evaluate the safety and efficacy of endovascular management of pulmonary artery lesions caused by lung tumors.

Materials And Methods: Nineteen patients (15 men, 4 women; average age: 60.3 years, range, 51-86 years) treated for massive or recurrent hemoptysis with transarterial pulmonary artery embolization between 2010 and 2016 were included in this multicenter, retrospective study.

Embolization of the Superior Rectal Arteries for Hemorrhoidal Disease: Prospective Results in 25 Patients.

Purpose: To evaluate efficacy and safety of superior rectal artery embolization of hemorrhoidal disease as a first-line invasive treatment.

Materials And Methods: This prospective study was conducted between 2014 and 2015 on 25 consecutive patients (16 men and 9 women with a mean age of 53 y [range, 30-76 y]) with grade II-III hemorrhoids refractory to medical treatment. A transfemoral superselective superior rectal artery branch embolization was performed using 2- and 3-mm diameter microcoils.

Embolisation of pulmonary radio frequency pathway - a randomised trial.

Purpose: Pneumothorax is the most common complication following a pulmonary percutaneous radiofrequency ablation (RFA), and thoracic drainages are the most frequent causes of an extended hospital stay. Our main objective was to show that the use of gelatin torpedoes may significantly decrease the number of chest tube placement.

Materials And Methods: Seventy-three patients were prospectively included in this study and then randomised into two groups: 34 with embolisation and without 39 without embolisation.

Pathological effects of lung radiofrequency ablation that contribute to pneumothorax, using a porcine model.

Objectives: The incidence of pneumothorax is 7 times higher after lung radiofrequency ablation (RFA) than after lung biopsy. The reasons for such a difference have never been objectified. The histopathologic changes in lung tissue are well-studied and established for RF in the ablation zone.

Role of dual-energy computed tomography in detecting early recurrences of lung tumours treated with radiofrequency ablation.

Purpose: Detecting a recurrence after lung radiofrequency ablation (RFA) is based on a group of arguments that include CT, positron emission tomography (PET-CT) at 3 months and clinical patient follow-up. There is no one examination that is absolutely reliable. Recurrences are diagnosed tardily, when the cancers are locally extended, or when the patients are metastatic.

Persistent pathways after lung radiofrequency ablation as a risk factor of drain placement.

Purpose: The risk factors of pneumothorax after lung radiofrequency (RF) ablation are long known. The objective was to demonstrate that the visualisation of an aeric RF path after the needle withdrawal was predictive of pneumothorax occurrence and chest tube placement.

Materials And Methods: A total of 70 patients were retrospectively included in this study.

Evaluation of Changes in Sexual Function Related to Uterine Fibroid Embolization (UFE): Results of the EFUZEN Study.

Objectives: The main goal of the study was to evaluate sexual function before and one year after UFE. The secondary goals were to evaluate the quality of life before and one year after UFE and to determine the relation of imaging findings (MRI data) before and 3-6 months after UFE to changes in sexual function and quality of life.

Materials And Methods: Study design: a prospective, multicenter (25 centers) observational study was conducted.

New Alcohol and Onyx Mixture for Embolization: Feasibility and Proof of Concept in Both In Vitro and In Vivo Models.

Introduction: Onyx and ethanol are well-known embolic and sclerotic agents that are frequently used in embolization. These agents present advantages and disadvantages regarding visibility, injection control and penetration depth. Mixing both products might yield a new product with different characteristics.

Anatomical and Technical Factors Influence the Rate of In-Stent Restenosis following Carotid Artery Stenting for the Treatment of Post-Carotid Endarterectomy Stenosis.

Background: Carotid artery stenting (CAS) has been advocated as an alternative to redo surgery for the treatment of post-carotid endarterectomy (CEA) stenosis. This study analyzed the efficacy of CAS for post-CEA restenosis, focusing on an analysis of technical and anatomical predictive factors for in-stent restenosis.

Methods: We performed a retrospective monocentric study.

Young Women with a Long Past of Resistant Hypertension Cured after Surgery of Severe Bilateral Ostial Renal Artery Stenosis.

Fibromuscular dysplasia (FMD) is an underdiagnosed disease which can affect young people and with poor prognosis such as dissection or aneurysm rupture if unknown. This case illustrates a multi-vessel FMD with symptomatic severe bilateral ostial renal artery stenosis and intracranial aneurysms. One of the original features is a very late delay to diagnosis with 23 years between onset of hypertension and renal stenosis diagnosis, particularly due to lower quality of initial CT scan with milder and uncommon abnormalities.

Intranuclear expression of progesterone receptors in smooth muscle cells of renovascular fibromuscular dysplasia: a pilot study.

Background: The pathogenesis of fibromuscular dysplasia (FMD) remains poorly understood. Yet, understanding this mechanism has taken on new urgency after recent evidence indicating that FMD is not as rare as previously thought. We speculated that hormonal receptors in the walls of dysplastic renal arteries were implicated in the pathogenesis of FMD.

Transjugular intrahepatic porto-systemic shunt is a risk factor for liver dysplasia but not hepatocellular carcinoma: a retrospective study of explanted livers.

Background: Conflicting data exist regarding the risk for hepatocellular carcinoma after transjugular intrahepatic porto-systemic shunt (TIPS) insertion in cirrhotic patients.

Methods: We retrospectively analysed histopathological data from 214 patients who were transplanted in our Institution including 68 patients who underwent TIPS placement before transplantation. Pathological lesions from explanted livers, including incidental hepatocellular carcinoma, small cell dysplasia and large cell dysplasia were recorded.

Prognostic value of preoperative coronary computed tomography angiography in patients treated by orthotopic liver transplantation.

Objectives: The aim of this study was to assess the feasibility of 64-slice coronary computed tomography (CT) angiography in patients treated by orthotopic liver transplantation, and to compare prognostic values of CT angiography and dobutamine stress echocardiography in the same population.

Methods: Eighty-two consecutive patients, without known coronary artery disease, who underwent orthotopic liver transplantation, were included in this study. A CT angiography was performed along with usual explorations including dobutamine stress echography.

Gadolinium chelate kinetics in cardiac MR imaging of myocarditis: comparison to acute myocardial infarction and impact on late gadolinium enhancement.

Objectives: To compare the kinetics of gadolinium in myocarditis and myocardial infarction and to establish the best interval between contrast injection and late gadolinium-enhanced (LGE) image acquisition for the diagnosis of acute myocarditis.

Methods: Seventeen patients with acute myocarditis and 12 with acute myocardial infarction underwent Look-Locker sequences before and after administration of 0.2 mmol/kg gadolinium chelate for a period of 14 minutes.

Incidence, predictors, and prognostic value of intramyocardial hemorrhage lesions in ST elevation myocardial infarction.

Background: Intra myocardial hemorrhage lesions (IMH) are underdiagnosed complication of ST elevation myocardial infarction (STEMI). We sought to determine the incidence, predictors and the prognostic value of IMH in STEMI using cardiac MR imaging (CMR) techniques.

Methods: We screened for inclusion consecutive patients with STEMI treated by percutaneous coronary intervention (PCI) within the first 12 hr of evolution.