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ESTUDIOS


01 octubre 2016

RADIOLOGY. Predictors of Clinical Outcome after Prostate Artery Embolization with Spherical and Nonspherical Polyvinyl Alcohol Particles in Patients with Benign Prostatic Hyperplasia

Tiago Bilhim, João Pisco, José A. Pereira, Nuno Vasco Costa, Lúcia Fernandes, Luís Campos Pinheiro, Marisa Duarte, António G. Oliveira

Purpose: To assess predictors of outcome after prostate artery embolization (PAE) for benign prostatic hyperplasia with spherical particle polyvinyl alcohol (sPVA) and compare outcomes with the use of nonspherical particle polyvinyl alcohol (nsPVA).

01 septiembre 2016

RADIOLOGY. Management of Uterine Fibroids: A Focus on Uterine-sparing Interventional Techniques

James E. Silberzweig, Daniel K. Powell, Alan H. Matsumoto, James B. Spies

Uterine fibroids occur in approximately 50% of women over the age of 40 years, and an estimated 50% of those are symptomatic. Menorrhagia is the most common symptom and the primary indication for treatment, although bulk symptoms often occur and can be treated. Pharmacotherapy is typically inadequate unless it can be expected to successfully bridge to menopause or allow for a less-invasive intervention. However, hormonal therapies have risks. Hysterectomy is still the most commonly performed procedure for symptomatic fibroids and has the lowest rate of reintervention (compared with myomectomy or uterine artery embolization [UAE]), but rates of more serious complications are higher and patient satisfaction and ability to return to normal activities may also be less favorable. Myomectomy is not necessarily less morbid than hysterectomy and may have a greater failure rate than UAE. Techniques and devices vary with little standardization, and operator experience is crucial to success. The largest studies of UAE show very low rates of serious complications and rapid recovery. UAE significantly improves symptoms related to uterine fibroids in 85%–90% of patients. Herein, this article will discuss the nature of fibroids and their diagnosis, pharmacotherapy, surgical treatment, and nonsurgical interventional treatment, including UAE and magnetic resonance–guided focused ultrasound.

01 noviembre 2017

RADIOLOGY. Tumor-penetrating Peptide-integrated Thermally Sensitive Liposomal Doxorubicin Enhances Efficacy of Radiofrequency Ablation in Liver Tumors

Fei Yan, Song Wang, Wei Yang, S. Nahum Goldberg, Hao Wu, Wan-Lu Duan, Zhi-Ting Deng, Hai-Bo Han, Hai-Rong Zheng

Purpose: To investigate the role of a tumor-penetrating peptide (internalizing CRGDRGPDC [iRGD])–integrated thermally sensitive liposomal (TSL) doxorubicin (DOX) in combination with radiofrequency (RF) ablation of liver tumors in an animal model.

01 noviembre 2017

RADIOLOGY. Hepatocellular Carcinoma: Nomograms Based on the Albumin-Bilirubin Grade to Assess the Outcomes of Radiofrequency Ablation

Wei-Yu Kao, Chien-Wei Su, Yi-You Chiou, Nai-Chi Chiu, Chien-An Liu, Kuan-Chieh Fang, Teh-Ia Huo, Yi-Hsiang Huang, Chun-Chao Chang, Ming-Chih Hou, Han-Chieh Lin, Jaw-Ching Wu

Purpose: To construct a nomogram with the albumin-bilirubin (ALBI) grade to assess the long-term outcomes of patients with early-stage hepatocellular carcinoma (HCC) after radiofrequency ablation (RFA).

01 octubre 2017

RADIOLOGY. Pilot Evaluation of Angiogenesis Signaling Factor Response after Transcatheter Arterial Embolization for Hepatocellular Carcinoma

James Ronald, Andrew B. Nixon, Daniele Marin, Rajan T. Gupta, Gemini Janas, Willa Chen, Paul V. Suhocki, Waleska Pabon-Ramos, David R. Sopko, Mark D. Starr, John C. Brady, Herbert I. Hurwitz, Charles Y. Kim

Purpose: To identify changes in a broad panel of circulating angiogenesis factors after bland transcatheter arterial embolization (TAE), a purely ischemic treatment for hepatocellular carcinoma (HCC).

01 noviembre 2017

AMERICAN JOURNAL OF ROENTGENOLOGY. Radiographic Findings of Distressed Venous Stents and Inferior Vena Cava Filters: Clinical Implications

Jeffrey Forris Beecham Chick, Steven D. Abramowitz, Matthew L. Osher, Minhaj S. Khaja, Kyle J. Cooper, Wael E. Saad and David M. Williams

OBJECTIVE. The objective of our study was to describe an association between the radiographic appearance of distressed intravascular implants and venous stenosis or occlusion and to determine the success of reparative endovascular procedures.

01 diciembre 2017

AMERICAN JOURNAL OF ROENTGENOLOGY. Percutaneous Image-Guided Cryoablation of Hepatic Tumors: Single-Center Experience With Intermediate to Long-Term Outcomes

Daniel I. Glazer, Servet Tatli, Paul B. Shyn, Mark G. Vangel, Kemal Tuncali and Stuart G. Silverman

OBJECTIVE. The purpose of this article is to report our intermediate to long-term outcomes with image-guided percutaneous hepatic tumor cryoablation and to evaluate its technical success, technique efficacy, local tumor progression, and adverse event rate.

01 diciembre 2017

AMERICAN JOURNAL OF ROENTGENOLOGY. Ethanol-Gel Sclerotherapy of Venous Malformations: Effectiveness and Safety

Veronika I. Teusch, Walter A. Wohlgemuth, Simone Hammer, Armin P. Piehler, René Müller-Wille, Holger Goessmann and Wibke Uller

OBJECTIVE. In the treatment of venous malformations, ethanol may be administered in a gelified form to increase local effects and reduce systemic ones. The purpose of this prospective study was to evaluate the efficacy and safety of a commercially available viscous ethanol gel in the treatment of venous malformations.

01 diciembre 2017

AMERICAN JOURNAL OF ROENTGENOLOGY. Whole-Body High-Pitch CT Angiography: Strategies to Reduce Radiation Dose and Contrast Volume

Sebastian Manneck, Lynne M. Hurwitz, Danielle M. Seaman, Tobias Heye and Daniel T. Boll

OBJECTIVE. The purpose of this study was to assess the noninferiority of dual-source high-pitch CT angiography (CTA) performed with high-concentration (iopamidol 370) low-volume (60 mL) iodinated contrast material at low voltage (100 kVp) in comparison with dual-source high-pitch CTA with standard-of-care low-concentration (iopamidol 300) standard-volume (75 mL) iodinated contrast material at high voltage (120 kVp) to determine whether use of the high-concentration low-volume method would afford a reduction in radiation dose and contrast volume without negatively affecting vascular opacification.

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