نتایج جستجو برای: fluoroscopy

تعداد نتایج: 4962  

2014
Pierre-Frédéric Villard Pierre Escamilla Erwan Kerrien Sébastien Gorges Yves Trousset Marie-Odile Berger

We present in this paper a preliminary study of rib motion tracking during Interventional Radiology (IR) fluoroscopy guided procedures. It consists in providing a physician with moving rib three-dimensional (3D) models projected in the fluoroscopy plane during a treatment. The strategy is to help to quickly recognize the target and the no-go areas i.e. the tumor and the organs to avoid. The met...

Journal: :Clinical orthopaedics and related research 2014
Brandon S Beamer Jordan H Morgan Christopher Barr Michael J Weaver Mark S Vrahas

BACKGROUND The success of THA largely depends on correct placement of the individual components. Traditionally, these have been placed freehand using anatomic landmarks, but studies have shown poor accuracy with this method. QUESTIONS/PURPOSES Specifically, we asked (1) does using fluoroscopy lead to more accurate and greater likelihood of cup placement with the Lewinnek safe zone than does f...

Journal: :Medical physics 2012
Gerasimos A T Messaris Ilias Abatzis George C Kagadis Alexandros P Samartzis Panagiota Athanasopoulou Nikolaos Christeas Konstantinos Katsanos Dimitrios Karnabatidis George C Nikiforidis

PURPOSE The aim of the present study was the evaluation and optimization of radiation dose to the ovaries (D) in hysterosalpingography (HSG). METHODS The study included a phantom study and a clinical one. In the phantom study, we evaluated imaging results for different geometrical setups and irradiation conditions. In the clinical study, 34 women were assigned into three different fluoroscopy...

Journal: :Circulation. Arrhythmia and electrophysiology 2016
Óscar Cano Ana Andrés Joaquín Osca Pau Alonso María-José Sancho-Tello José Olagüe Luis Martínez-Dolz

BACKGROUND We sought to evaluate the safety and feasibility of a minimally fluoroscopic approach using the CARTOUNIVU module during scar-related ventricular tachycardia (VT) ablation. METHODS AND RESULTS Consecutive patients with structural heart disease undergoing VT ablation using the CARTOUNIVU module were prospectively included and classified depending on their VT substrate: (1) ischemic ...

Journal: :Radiology 2004
Mirko Schiemann Reinmar Killmann Martin Kleen Nasreddin Abolmaali Jennifer Finney Thomas J Vogl

PURPOSE To investigate the efficacy of a second-generation prototype magnetic guidance system in complex vessel phantoms versus conventional navigation in simulated interventional radiology procedures and to analyze procedure and fluoroscopy times. MATERIALS AND METHODS The magnetic guidance system consists of two focused-field permanent magnets on each side of the body that create a 0.1-T na...

Journal: :Spine 2015
Andrew G Patton Randal P Morris Yong-Fang Kuo Ronald W Lindsey

STUDY DESIGN Randomized laboratory cadaver study. OBJECTIVE The objective of this study was to determine the accuracy of anterior transpedicular screw placement in the cervical spine using conventional fluoroscopy versus computer-assisted navigation. SUMMARY OF BACKGROUND DATA Traditionally, global cervical instability has required anterior and posterior fixation due to the superior biomech...

Journal: :The journal of trauma and acute care surgery 2013
Daniel J Scott Jonathan L Eliason Carole Villamaria Jonathan J Morrison Robert Houston Jerry R Spencer Todd E Rasmussen

BACKGROUND Resuscitative endovascular balloon occlusion of the aorta (REBOA) is a potentially lifesaving maneuver in the setting of hemorrhagic shock. However, emergent use of REBOA is limited by existing technology, which requires large sheath arterial access and fluoroscopy-guided balloon positioning. The objectives of this study were to describe a new, fluoroscopy-free REBOA system and to co...

2017
M.J. Heffernan B. Snyder H. Zhou X. Li

PURPOSE Intra-operative imaging plays a key role in screw placement for slipped capital femoral epiphysis (SCFE). Complications have been associated with inadequate screw position. The purpose of this study was to evaluate computed tomography (CT) (3D fluoroscopy) and standard fluoroscopy (C-arm) images as compared with direct anatomic measurement to determine final screw position in a cadaveri...

Journal: :Progres en urologie : journal de l'Association francaise d'urologie et de la Societe francaise d'urologie 2016
A Demirci O Raif Karabacak F Yalçınkaya O Yiğitbaşı C Aktaş

OBJECTIVE Percutaneous nephrolithotomy (PNL) and retrograde intrarenal surgery (RIRS) are the standard treatments used in the endoscopic treatment of kidney stones depending on the location and the size of the stone. The purpose of the study was to show the radiation exposure difference between the minimally invasive techniques by synchronously measuring the amount of radiation the patients and...

Journal: :JACC. Cardiovascular interventions 2015
José Ramón Azpiri-López José Luis Assad Morell

We found interesting the article by Wassef et al. (1), showing that a novel radiation reduction protocol from Phillips called ECO decreased the Ka,r by 48% in an unselected group referred for coronary angiography and angioplasty. Absolute dose reductions are impressive. We recently published similar proportion dose reductions in Ka,r and PKA using the GE Innova 3000 angiography suite (GE Health...

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