Percutaneous drainage of 4 pancreatic abscesses and 5 pancreatic pseudocysts was performed under the guidance of ultrasonography or fluoroscopy. Clinical inprovement following the percutaneous drainage enabled surgical procedure in 2 of 4 pationts with pancreatic abscesses and obviated surgery in the other 2. In patients with pancreatic pseudocysts, recurrence have nat been observed for the last 3 years. Percutaneous drainage is a safe and effective procedure and could be the method of choice in the management of pancreatic pseudocyst that is symptomatic and enlarging. Percutaneous drainage could play a significant role in the management of the patients with pancreatic abscess.
Abscess* ; Drainage* ; Fluoroscopy ; Humans ; Methods ; Pancreatic Pseudocyst ; Recurrence ; Ultrasonography

OBJECTIVE: To investigate the improvement of dysphagia after balloon dilatation and balloon swallowing at the vallecular space with a Foley catheter in stroke patients. METHODS: This study was conducted between May 1, 2012 and December 31, 2015, and involved 30 stroke patients with complaints of difficulty in swallowing. All patients underwent videofluoroscopic swallowing study (VFSS) before and after vallecular ballooning. VFSS was performed with a 4 mL semisolid bolus. For vallecular ballooning, two trainings were performed for at least 10 minutes, including backward stretching of the epiglottis and swallowing of a balloon located in the vallecular space, by checking the movement of the Foley catheter tip in real time using VFSS. RESULTS: After examination of the dysphagia improvement pattern before and after vallecular ballooning, laryngeal elevation (x-axis: pre 2.62±1.51 mm and post 3.54±1.93 mm, p=0.038; y-axis: pre 17.11±4.24 mm and post 22.11±3.46 mm, p=0.036), pharyngeal transit time (pre 5.76±6.61 s and post 4.08±5.49 s, p=0.043), rotation of the epiglottis (pre 53.24°±26.77° and post 32.45°±24.60°, p<0.001), and post-swallow pharyngeal remnant (pre 41.31%±23.77% and post 32.45%±24.60%, p=0.002) showed statistically significant differences. No significant difference was observed in the penetration-aspiration scale score (pre 4.73±1.50 and post 4.46±1.78, p=0.391). CONCLUSION: For stroke patients with dysmotility of the epiglottis and post-swallowing residue, vallecular ballooning can be considered as an alternative method that can be applied without risk of aspiration in dysphagia treatment.
Catheters ; Deglutition ; Deglutition Disorders* ; Dilatation ; Epiglottis ; Fluoroscopy ; Humans ; Methods ; Stroke*

Female ; Fluoroscopy ; Humans ; Intubation, Intratracheal ; Male ; Middle Aged ; Tracheotomy ; methods

In the examination of 3D DCE-MRA, it is the key of success or failure to measure and compute the delaying scan time accurately. Now, the timing technique used widely in clinic is test injection bolus, which is limited by inadequate perfectibility, limited spatial resolution and technique complexity. In this article is presented a technique in which contrast arrival is detected in the targeted vasculature in real time using MR fluoroscopy. Upon detection the operator triggers a 3D MR angiographic acquisition which uses an elliptical centric view order. It is shown that the view order intrinsically provides a high degree of venous suppression, a high degree of immunity to motion effects and a high degree of spatial resolution. The reliability of fluoroscopic triggering in bolus detection is shown to be over 95%. The technique provides high quality contrast-enhanced MR angiograms for many vascular regions.
Contrast Media ; Fluoroscopy ; methods ; Humans ; Image Enhancement ; methods ; Imaging, Three-Dimensional ; Magnetic Resonance Angiography ; methods

Local back pain and radiculopathy can be debilitating for sufferers of these conditions. There are a multitude of treatment modalities, ranging from conservative approaches such as bed rest, physical therapy and chiropractic manipulation, to more invasive options such as percutaneous spinal intervention (PSI) and surgery. We present here the techniques employed in the use of minimally invasive, image-guided percutaneous techniques under computed tomography fluoroscopy in our institutions. The inherent high spatial and tissue contrast resolution not only allows ease of trajectory planning in avoiding critical structures, but also allows precision needle placement. Cervical, lumbosacral, and sacroiliac pain can therefore be evaluated and treated both safely and effectively.
Administration, Cutaneous ; Fluoroscopy ; methods ; Humans ; Pain, Intractable ; drug therapy ; Spine ; physiopathology ; Tomography, X-Ray Computed ; methods

A surgical navigation system based on X-rays of C-arm with a calibration target has been studied and developed. Extracting images of markers in the two templates on the calibration target, the system is able to establish the relationship between different markers coordinates in different coordinate systems using the algorithm based on the layout of specific markers. The correction of X-ray image distortion and C-arm camera calibration are performed using the images of calibration target as bases. After the parameters of the C-arm projection model being determined, an X-ray image of surgical site will be acquired preoperatively; the surgical instruments will be tracked by the optical position system, and then virtual projections of instruments can be formed on preoperative images. Surgeons will perform operations with the guidance of the system. The C-arm can be used less frequently and the X-ray radiation can be reduced. Cadaveric spine specimen experiments and error analysis have underpinned the clinical feasibility of the system.
Algorithms ; Artifacts ; Calibration ; Fluoroscopy ; methods ; Humans ; Neurosurgical Procedures ; instrumentation ; methods ; Radiographic Image Enhancement ; methods ; Surgery, Computer-Assisted ; methods

A goal of total knee arthroplasty is to obtain symmetric and balanced flexion and extension gaps. Controversy exists regarding the best surgical technique to utilize to obtain gap balance. Some favor the use of a measured resection technique in which bone landmarks, such as the transepicondylar, the anterior-posterior, or the posterior condylar axes are used to determine proper femoral component rotation and subsequent gap balance. Others favor a gap balancing technique in which the femoral component is positioned parallel to the resected proximal tibia with each collateral ligament equally tensioned to obtain a rectangular flexion gap. Two scientific studies have been performed comparing the two surgical techniques. The first utilized computer navigation and demonstrated a balanced and rectangular flexion gap was obtained much more frequently with use of a gap balanced technique. The second utilized in vivo video fluoroscopy and demonstrated a much high incidence of femoral condylar lift-off (instability) when a measured resection technique was used. In summary, the authors believe gap balancing techniques provide superior gap balance and function following total knee arthroplasty.
Arthroplasty, Replacement, Knee/adverse effects/*methods ; Fluoroscopy/methods ; Humans ; Knee Joint/physiology/surgery ; Surgery, Computer-Assisted/methods ; Treatment Outcome

Lumbar radicular pain is conventionally treated with transforaminal epidural injection under the guidance of fluoroscopy or computer tomography. However, fluoroscopic radiation can be hazardous in certain populations, including pregnant women. An adjustment of the amount of local anesthetic is required in this population. An alternative method of lumbar root block using ultrasound (US) guidance has recently been introduced. Here, we present the case of a pregnant woman with worsening lumbar radicular pain during her pregnancy and the management of her pain using US-guided pararadicular block.
Female ; Fluoroscopy ; Humans ; Injections, Epidural ; Low Back Pain* ; Methods ; Pregnancy ; Pregnant Women* ; Ultrasonography

STUDY DESIGN: Retrospective. PURPOSE: To analyze whether the cross-sectional area of the intervertebral foramen at the outermost edge of the resection site is associated with postoperative outcomes and whether our fluoroscopic method for determining the resection area is appropriate. OVERVIEW OF LITERATURE: There is no consensus on the criteria for determining an optimal resection area to obtain sufficient decompression while maintaining intervertebral stability in posterior percutaneous endoscopic cervical foraminotomy. Previous reports have recommended a facet resection rate (FRR) of ≤50%. Intervertebral foramen stenosis often extends to the exit zone. The cross-sectional area of the intervertebral foramen is occasionally small at the outermost edge of the resection site. No report has analyzed whether these aspects are associated with postoperative outcomes. METHODS: Lateral margins of the resection area were set at lateral borders of the vertebral body on frontal fluoroscopic view. Because the percutaneous endoscope has a small diameter, surrounding structures can easily be identified using frontal view fluoroscopy to determine the resection area. FRRs were calculated from postoperative computed tomography images. The smallest cross-sectional area of the intervertebral foramen around the lateral edge of the resection area (SALE) was measured and compared wit clinical outcomes. RESULTS: The mean FRR was 41.7% at C5–C6 and 48.9% at C6–C7. SALE was not correlated with clinical outcomes. CONCLUSIONS: Residual stenosis in the lateral portion of the intervertebral foramen is weakly associated with postoperative outcomes. Our process achieved adequate FRRs and favorable postoperative outcomes, suggesting that our criteria for determining the resection area are appropriate.
Commerce ; Consensus ; Constriction, Pathologic ; Decompression ; Endoscopes ; Fluoroscopy ; Foraminotomy* ; Methods ; Retrospective Studies

OBJECTIVE: To investigate the impact of tracheostomy tube capping on swallowing physiology in stroke patients with dysphagia via videofluoroscopic swallowing study (VFSS). METHODS: This study was conducted as a prospective study that involved 30 stroke patients. Then, 4 mL semisolid swallowing was conducted with capping of the tracheostomy tube or without capping of the tracheostomy tube. The following five parameters were measured: laryngeal elevation, pharyngeal transit time, post-swallow pharyngeal remnant, upper esophageal sphincter width (UES), and penetration-aspiration scale (PAS) score. RESULTS: On assessment of the differences in swallowing parameters during swallowing between ‘with capping’ and ‘without capping’ statuses, statistically significant differences were found in the post-swallow pharyngeal remnant (without capping, 48.19%±28.70%; with capping, 25.09%±19.23%; p<0.001), normalized residue ratio scale for the valleculae (without capping, 0.17±0.12; with capping, 0.09±0.12; p=0.013), normalized residue ratio scale for the piriform sinus (without capping, 0.16±0.12; with capping, 0.10±0.07; p=0.015), and UES width (without capping, 3.32±1.61 mm; with capping, 4.61±1.95 mm; p=0.003). However, there were no statistically significant differences in laryngeal elevation (x-axis without capping, 2.48±1.45 mm; with capping, 3.26±2.37 mm; y-axis without capping, 11.11±5.24 mm; with capping, 12.64±6.16 mm), pharyngeal transit time (without capping, 9.19± 10.14 s; with capping, 9.09±10.21 s), and PAS score (without capping, 4.94±2.83; with capping, 4.18±2.24). CONCLUSION: Tracheostomy tube capping is a useful way to reduce post-swallow remnants and it can be considered an alternative method for alleviating dysphagia in stroke patients who can tolerate tracheostomy tube capping when post-swallow remnants are observed.
Deglutition ; Deglutition Disorders* ; Esophageal Sphincter, Upper ; Fluoroscopy ; Humans ; Methods ; Physiology ; Prospective Studies ; Pyriform Sinus ; Stroke* ; Tracheostomy*