flouroscopy

Our patient had recurrent syncope due to ventricular tachycardia (VT) after one year of VVI Pacemaker implantation. He had pacemaker pocket infection for which new pacemaker was implanted on opposite side but old lead was not explanted completely. Flouroscopy showed redundant loop of old lead in right ventricular inflow which was snared out subsequently. He never had syncope or VT after that.

UNLABELLED: PURPOSE; To evaluate the accuracy of fluoroscopyassisted cervical transpedicular fixation in different pathologies. METHODS: 28 men and 17 women aged 34 to 65 (mean, 41) years underwent 210 one-stage cervical transpedicular fixations. The indications were trauma (n=35), degenerative disease leading to cervical spondylotic myelopathy (n=4), tumours (n=4), and Pott's disease (n=2). Regarding the 35 trauma patients, fractures were at C5-C6 (n=22), C4-C5 (n=8), and C3-C5 (n=5); 16 of them had dislocated vertebrae, of whom 13 had cervical disc herniation...

The aim of this study was to investigate the effect of extracorporeal shock wave lithotripsy (ESWL) on kidney oxidative stress and trace element levels of adult rats. Twelve male Wistar albino rats were divided equally into two groups. First group was used as control. The right-side kidneys of animals in second group were treated with 2,000 18-kV shock waves under anesthesia. Localization of the right kidney was achieved following contrast medium injection through a tail vein under flouroscopy control. The animals were sacrificed 72 h after the ESWL treatment, and the kidneys were taken...

BACKGROUND: In this study we aimed to evaluate the long-term outcome of diaphragmatic plication for symptomatic unilateral diaphragm paralysis. METHODS: Thirteen patients who underwent unilateral diaphragmatic plication (2 patients had right, 11 left plication) between January 2003 and December 2006 were evaluated. One patient died postoperatively due to sepsis. The remaining 12 patients [9 males, 3 females; mean age 60 (36-66) years] were reevaluated with chest radiography, flouroscopy or ultrasonography, pulmonary function tests, computed tomography (CT) or magnetic resonance imaging (MRI), and the MRC/ATS dyspnea score at an average of 5...

During prostate brachytherapy, C-arm flouroscopy images are used for a qualitative assessment of the procedure. Three dimensional reconstruction of the implanted seeds can be used for intraoperative dosimetry and quantitative assessment. Accurate C-arm pose estimation is necessary for 3D localization of the seeds. We propose to measure the C-arm rotation angles and computationally compensate the inevitable C-arm translational motion to estimate the pose. We compensate the oscillation, sagging and wheel motion of the C-arm using a three-level optimization algorithm, without which the reconstruction can fail...

PURPOSE: We evaluated the effects of previous open renal surgery and unsuccessful extracorporeal shockwave lithotripsy (SWL) treatment on the performance and outcomes of percutaneous nephrolithotomy (PCNL). PATIENTS AND METHODS: A total of 410 consecutive PCNL procedures for renal calculi were performed at our institution from November 2006 to March 2009. Of these 410 patients, 86 (20.9%) with a history of failed SWL on the same side were categorized as group I, and 132 (32...

Computer-aided surgery (CAS) allows for real-time intraoperative feedback resulting in increased accuracy, while reducing intraoperative radiation. CAS is especially useful for the treatment of certain pelvic ring fractures, which necessitate the precise placement of screws. Flouroscopy-based CAS modules have been developed for many orthopedic applications. The integration of the isocentric flouroscope even enables navigation using intraoperatively acquired three-dimensional (3D) data, though the scan volume and imaging quality are limited...

Most interventional pain physicians are experts in the use of fluoroscopy and understand its importance in improving the safety, accuracy and efficacy of diagnostic and therapeutic procedures. The addition of digital subtraction may enhance the utility of radiography and improve the accuracy of our interpretations. This article illustrates the use of the technique in several patients. The utility of this enhanced technique in clinical versus research application remains to be determined.

Flouroscopy-based navigation can increase accuracy in two-incision minimally invasive THA, a novel technique develop for promoting fast recovery.

The aim of this pilot study was to evaluate whether the technique of magnetic fluid hyperthermia can be used for minimally invasive treatment of prostate cancer. This paper presents the first clinical application of interstitial hyperthermia using magnetic nanoparticles in locally recurrent prostate cancer. Treatment planning was carried out using computerized tomography (CT) of the prostate. Based on the individual anatomy of the prostate and the estimated specific absorption rate (SAR) of magnetic fluids in prostatic tissue, the number and position of magnetic fluid depots required for sufficient heat deposition was calculated while rectum and urethra were spared...

UNLABELLED: A pseudo r' in V1 during supraventricular tachycardia (SVT), but not during sinus rhythm is pathognomonic for AV nodal re-entry tachycardia (AVNRT). During radiofrequency (RF) energy delivery, stability of the catheter tip is crucial. Intra-procedural catheter and patient movement as well as abrupt rhythm changes can lower efficacy, prolong procedural time, and contribute to the risk of AV block. OBJECTIVES: A novel streamlined approach using a single sheath and two catheters was evaluated that leverages the patient's own anatomy to help stabilize catheter position during RF application and localize RF targets...

Four cases of severe mitral regurgitation due to disc variance of the Harken disc prosthesis in the mitral position are described. The valve occluder actually escaped into the left atrium in two patients, and neither survived despite emergency valve replacement. In the other two, disc malfunction was identified by flouroscopy, the prosthesis was replaced, and both patients survived. All four patients had associated aortic regurgitation, which most likely contributed to erosion of the disc edges. It is suggested that patients with the Harken disc prosthesis undergo periodic evaluation to detect abnormal disc motion...

In this paper we present a trainings system for catheter interventions, especially PCTAs also called ballon dilatation. Despite the large number of such interventions the education of the cardiologist is still based on learning on the patient. This means risk to the patient and additional cost. To overcome these problems we developed the CathI system (Catheter Instruction System), a realistic computerbased training system. It provides the physician with the same equipment found in a catheter laboratory, e.g...

OBJECTIVE: To summarize the initial experience of endoluminal stent-grafting in the treatment of abdominal aortic aneurysm (AAA). METHODS: Stent-graft of proper shape and size was selected according to the morphology of AAA and was inserted into the lumen of abdominal aortic aneurysm through femoral artery to reconstruct the blood flow under X-ray flouroscopy among 34 cases. Data on complications and morphological changes were obtained according to a strict follow-up plan...

Upto April 1999 interstitial seed implants were being performed throughout Europe only as an in-patient treatment. Consequently, we questioned whether this same method could be performed as an out-patient treatment without forfeiting the required quality and safety normally observed with in-patients. Since April 1999 we have treated 73 patients with iodine 125 seed implants (RAPID strand). The average patient age was 65 yrs, the average PSA was 11.5 ng/ml, tumor stage was either T1 or T2. All treatments were carried out in general anesthesia under ultrasound and flouroscopy monitoring...

To explore the safety and the effectiveness of laparoscopic and thoracoscopic spinal surgery, an acute/non-survival animal trial was performed in 5 pigs using rigid and flexible endoscopes, flouroscopy, a holmium-YAG laser, and prototype instruments and implants. Our study aimed to approach the intervertebral disc space and spinal canal using laparoscopic and thoracoscopic techniques and to explore the potential and limits for endoscopic anterior spinal decompression and fusion. In a lateral recumbency access was provided to the anterolateral aspect of the lumbar spine from L1/2 to L7/S1, the thoracic spine was accessible from T2/3 to the diaphragmatic insertion...

QUESTION: Is sonography helpful in facet joint infiltration of the lumbar spine? METHOD: The sonoanatomy of the lumbar spine and the of lumbosacral junction was examined and described in a skeleton and in 10 volunteers. One representative cross section and 3 longitudinal sections were defined. According to these results (no neurological symptoms) the possibilities of ultrasound guided infiltration of the facet joints was examined in 78 patients (36 female, 42 male, average age 55 y...

OBJECTIVES: With the increasing use of endourologic procedures to diagnose and treat urologic problems, the urologist's exposure to radiation from fluoroscopy becomes an important safety consideration. Although collimation of the x-ray beam generally prevents direct radiation exposure by the urologist, the patient absorbs radiation during the procedure and becomes a secondary source of exposure through radiation scatter. METHODS: We measured radiation exposure to the urologist during endourologic procedures using standard body shields and thyroid collars...

The first reported case of a patient with left internal mammary artery bypass graft dissection secondary to selective coronary and graft arteriography is presented. The intimal tear and false lumen could not be seen with flouroscopy during catheterization. This later led to antero-septal myocardial infarction.

Two-dimensional echocardiography (2-D echo) was used as an imaging device for the performance of balloon atrial septostomy (n = 25) and blade atrial septostomy (n = 3). Biplane fluoroscopy with 2-D echo or 2-D echo alone were used in the cardiac catheterization laboratory to place the balloon or blade septostomy catheter in the left atrium. Echocardiography confirmed the position of the septostomy catheter before pullback. Balloon inflation and balloon or blade pullback to the right atrium was performed with 2-D echocardiographic visualization...