keyword
MENU ▼
Read by QxMD icon Read
search

C-arm

keyword
https://www.readbyqxmd.com/read/29766680/c-arm-computed-tomography-assisted-adrenal-venous-sampling-improved-right-adrenal-vein-cannulation-and-sampling-quality-in-primary-aldosteronism
#1
Chung Hyun Park, Namki Hong, Kichang Han, Sang Wook Kang, Cho Rok Lee, Sungha Park, Yumie Rhee
BACKGROUND: Adrenal venous sampling (AVS) is a gold standard for subtype classification of primary aldosteronism (PA). However, this procedure has a high failure rate because of the anatomical difficulties in accessing the right adrenal vein. We investigated whether C-arm computed tomography-assisted AVS (C-AVS) could improve the success rate of adrenal sampling. METHODS: A total of 156 patients, diagnosed with PA who underwent AVS from May 2004 through April 2017, were included...
May 4, 2018: Endocrinology and Metabolism
https://www.readbyqxmd.com/read/29762549/frameless-stereotaxis-for-subthalamic-nucleus-deep-brain-stimulation-an-innovative-method-for-the-direct-visualization-of-electrode-implantation-by-intraoperative-x-ray-control
#2
Paolo Mazzone, Alessandro Stefani, Fabio Viselli, Eugenio Scarnati
The recent introduction of frameless devices has enabled stereotactic neurosurgery to reach a level of accuracy that is comparable to traditional frame-based methodologies. Among frameless devices, the Nexframe appears to be very useful in implanting electrodes into the subthalamic nucleus or other structures for deep brain stimulation in Parkinson's disease. However, frameless devices, including the Nexframe, limit the possibility of intraoperative visual control of the placement of electrodes in the brain...
May 15, 2018: Brain Sciences
https://www.readbyqxmd.com/read/29757895/a-novel-technique-in-the-treatment-of-lymphoceles-after-renal-transplantation-c-arm-cone-beam-ct-guided-percutaneous-embolization-of-lymphatic-leakage-following-lymphangiography
#3
İsmail Okan Yildirim, Turgut Pişkin, Enes Duman, Ali Firat, Murat Dogan, Hülya Taskapan, Idris Sahin, Kaya Sarac
BACKGROUND: We aimed to evaluate the efficacy of percutaneous embolization following lymphangiography using C-arm cone-beam computed tomography (CBCT) performed at the site of lymphatic leakage in patients with postrenal transplant lymphocele. METHODS: Between July 2014 and August 2017, 13 patients not responding to percutaneous ethanol sclerotherapy and conservative treatment for recurrent lymphocele following renal transplant were included. The mean age of the patients was 56...
May 11, 2018: Transplantation
https://www.readbyqxmd.com/read/29753333/3d-treatment-planning-systems
#4
REVIEW
Cheng B Saw, Sicong Li
Three-dimensional (3D) treatment planning systems have evolved and become crucial components of modern radiation therapy. The systems are computer-aided designing or planning softwares that speed up the treatment planning processes to arrive at the best dose plans for the patients undergoing radiation therapy. Furthermore, the systems provide new technology to solve problems that would not have been considered without the use of computers such as conformal radiation therapy (CRT), intensity-modulated radiation therapy (IMRT), and volumetric modulated arc therapy (VMAT)...
July 2018: Medical Dosimetry: Official Journal of the American Association of Medical Dosimetrists
https://www.readbyqxmd.com/read/29750754/the-barrow-biomimetic-spine-fluoroscopic-analysis-of-a-synthetic-spine-model-made-of-variable-3d-printed-materials-and-print-parameters
#5
Michael A Bohl, Michael A Mooney, Garrett J Repp, Peter Nakaji, Steve W Chang, Jay D Turner, U Kumar Kakarla
STUDY DESIGN: Objective and subjective fluoroscopic assessments of a new synthetic spine model. OBJECTIVE: To analyze the fluoroscopic performance and fidelity to human tissue of a new synthetic spine model. SUMMARY OF BACKGROUND DATA: The [blinded for review] Biomimetic Spine project aims to develop a 3-dimensional (3D) printed, synthetic spine model that will one day replace cadaveric tissue in spine biomechanical research. A crucial component to any biomimetic spine model is that it performs similarly to cadaveric tissue on standard diagnostic imaging modalities...
May 10, 2018: Spine
https://www.readbyqxmd.com/read/29748746/radiation-exposure-for-the-surgical-team-in-a-hybrid-operating-room
#6
Konard Schuetze, A Eickhoff, C Dehner, M Schultheiss, F Gebhard, P H Richter
Hybrid-operating rooms enable the surgeon to acquire intraoperative high-resolution 2- and 3D images and use them for navigation. The radiation dose of the operating personal and the patient remains the major concern. In 9 months, 109 pelvic and spine cases were performed using a hybrid operating room. Radiation dose of the surgeon and the assisting nurse was recorded using real-time dosimeters. Lower radiation doses for the main surgeon in navigated dorsal instrumentations of the thoracic spine were recorded...
May 10, 2018: Journal of Robotic Surgery
https://www.readbyqxmd.com/read/29740752/tomosynthesis-implementation-with-adaptive-online-calibration-on-clinical-c-arm-systems
#7
Khanlian Chung, Lothar R Schad, Frank G Zöllner
PURPOSE: Cone beam computed tomography (CBCT) systems offer physicians crucial 3D and 2D imaging capabilities during interventions. However, certain medical applications only require very specific information from the CBCTs (e.g., determination of the position of high-contrast objects). In diagnostics, tomosynthesis techniques can be used in these cases to minimize dose exposure. Therefore, integrating such techniques on CBCT systems could also be beneficial for interventions. In this paper, we investigate the performance of our implementation of circular tomosynthesis on a CBCT device...
May 8, 2018: International Journal of Computer Assisted Radiology and Surgery
https://www.readbyqxmd.com/read/29739713/volumetric-modulated-arc-therapy-of-head-and-neck-cancer-on-a-fast-rotating-o-ring-linac-plan-quality-and-delivery-time-comparison-with-a-c-arm-linac
#8
Steven Michiels, Kenneth Poels, Wouter Crijns, Laurence Delombaerde, Robin De Roover, Bianca Vanstraelen, Karin Haustermans, Sandra Nuyts, Tom Depuydt
BACKGROUND AND PURPOSE: Linac improvements in gantry speed, leaf speed and dose rate may increase the time-efficiency of volumetric modulated arc therapy (VMAT) delivery. The plan quality achievable with faster VMAT however remains to be investigated. In this study, a fast-rotating O-ring linac with fast-moving leaves is compared with a C-arm linac in terms of plan quality and delivery time for VMAT of head-and-neck cancer (HNC). MATERIAL AND METHODS: For 30 patients with HNC, treatment planning was performed using dual-arc (HA2) and triple-arc (HA3) VMAT on a Halcyon fast-rotating O-ring linac and using dual-arc VMAT on a TrueBeam C-arm linac (TB2)...
May 5, 2018: Radiotherapy and Oncology: Journal of the European Society for Therapeutic Radiology and Oncology
https://www.readbyqxmd.com/read/29729693/intradiscal-ozone-therapy-for-lumbar-disc-herniation
#9
Sibel Ozcan, Arzu Muz, Aysun Yildiz Altun, Selami Ates Onal
The rationale behind intradiscal O2-O3 therapy is the pain elicited by the mechanical compression of the nerve root, which is associated with periganglionic and periradicular inflammation. This study aimed to determine the effect of intradiscal ozone injection on pain score and satisfaction of patients with low back pain (LBP) secondary to disc herniation. Patients with LBP diagnosed with disc herniation were enrolled in this clinical trial. After prepping and draping the area, intradiscal injection of ozone/oxygen mixture (10 ml, 25μg/ml) was performed under fluoroscopy guide (c-arm)...
April 30, 2018: Cellular and Molecular Biology
https://www.readbyqxmd.com/read/29720249/image-quality-of-arterial-phase-and-parenchymal-blood-volume-pbv-maps-derived-from-c-arm-computed-tomography-in-the-evaluation-of-transarterial-chemoembolization
#10
Tanja Zitzelsberger, Roland Syha, Gerd Grözinger, Sasan Partovi, Konstantin Nikolaou, Ulrich Grosse
BACKGROUND: To evaluate the benefits of arterial phase imaging and parenchymal blood volume (PBV) maps acquired by C-arm computed tomography during TACE procedure in comparison to cross-sectional imaging (CSI) using CT or MRI. METHODS: From January 2014 to December 2016, a total of 29 patients with HCC stage A or B (mean age 65 years; range 47 to 81 years, 86% male) were included in this study. These patients were referred to our department for TACE treatment and received peri-interventional C-arm CT...
May 2, 2018: Cancer Imaging: the Official Publication of the International Cancer Imaging Society
https://www.readbyqxmd.com/read/29713413/comparative-prospective-study-reporting-intraoperative-parameters-pedicle-screw-perforation-and-radiation-exposure-in-navigation-guided-versus-non-navigated-fluoroscopy-assisted-minimal-invasive-transforaminal-lumbar-interbody-fusion
#11
Tarun Dusad, Vishal Kundnani, Shumayou Dutta, Ankit Patel, Gaurav Mehta, Mahendra Singh
Study Design: Prospective cohort study. Purpose: To compare intraoperative parameters, radiation exposure, and pedicle screw perforation rate in navigation-guided versus non-navigated fluoroscopy-assisted minimal invasive transforaminal lumbar interbody fusion (MIS TLIF). Overview of Literature: The poor reliability of fluoroscopy-guided instrumentation and growing concerns about radiation exposure have led to the development of navigation-guided instrumentation techniques in MIS TLIF...
April 2018: Asian Spine Journal
https://www.readbyqxmd.com/read/29682365/bedside-endoscopic-retrograde-cholangiopancreatography-using-portable-x-ray-in-acute-severe-cholangitis
#12
Rushikesh Shah, Emad Qayed
Patients with acute cholangitis require emergent biliary decompression. Those who are hemodynamically unstable on vasopressor support and mechanical ventilation are too critically ill to move outside of the intensive care unit. This prohibits performing Endoscopic Retrograde Cholangiopancreatography (ERCP) in the endoscopy unit. Fluoroscopic guidance is required to confirm deep biliary cannulation during ERCP. There are a few reported cases of bedside ERCP using portable C-arm fluoroscopy unit or ultrasound guided cannulation...
2018: Case Reports in Gastrointestinal Medicine
https://www.readbyqxmd.com/read/29668635/effect-of-intradiscal-pulsed-radiofrequency-on-refractory-chronic-discogenic-neck-pain-a-case-report
#13
So Young Kwak, Min Cheol Chang
RATIONALE: Despite medication, exercise, and medical intervention, many patients complain of persistent discogenic neck pain. To manage discogenic neck pain, we performed intradiscal pulsed radiofrequency (PRF) stimulation in a patient with chronic discogenic neck pain refractory to oral medication and epidural steroid injection. PATIENT CONCERNS: A 26-year-old man presented with a numeric rating scale (NRS) score of 7 for chronic neck pain. His pain was worse when the neck was held in one position for a prolonged period...
April 2018: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29667139/spinal-navigation-for-minimally-invasive-thoracic-and-lumbosacral-spine-fixation-implications-for-radiation-exposure-operative-time-and-accuracy-of-pedicle-screw-placement
#14
T Tajsic, K Patel, R Farmer, R J Mannion, R A Trivedi
PURPOSE: Navigation is emerging as a useful adjunct in percutaneous, minimally invasive spinal surgery (MIS). The aim of this study was to compare C-Arm navigated, O-Arm navigated and conventional 2D-fluoroscopy assisted MIS thoracic and lumbosacral spine fixation techniques in terms of operating time, radiation exposure and accuracy of pedicle screw (PS) placement. METHODS: Retrospective observational study of 152 consecutive adults who underwent MIS fixations for spinal instability: 96 2D-fluoroscopy assisted, 39 3D-C-Arm navigated and 27 using O-Arm navigated...
April 17, 2018: European Spine Journal
https://www.readbyqxmd.com/read/29664885/the-effect-of-hip-positioning-on-the-projected-femoral-neck-shaft-angle-a-modeling-study
#15
Abhiram R Bhashyam, Edward K Rodriguez, Paul Appleton, John J Wixted
OBJECTIVES: The femoral neck-shaft angle (NSA) is used to restore normal hip geometry during hip fracture repair. Femoral rotation is known to affect NSA measurement, but the effect of hip flexion-extension is unknown. The goals of this study were to determine and test mathematical models of the relationship between hip flexion-extension, femoral rotation and NSA. We hypothesized that hip flexion-extension and femoral rotation would result in NSA measurement error. METHODS: Two mathematical models were developed to predict NSA in varying degrees of hip flexion-extension and femoral rotation...
April 3, 2018: Journal of Orthopaedic Trauma
https://www.readbyqxmd.com/read/29661071/a-comparison-of-image-quality-and-radiation-exposure-between-the-mini-c-arm-and-the-standard-c-arm
#16
Juliaan R M van Rappard, Willy A Hummel, Tijmen de Jong, Chantal M Mouës
BACKGROUND: The use of intraoperative fluoroscopy has become mandatory in osseous hand surgery. Due to its overall practicality, the mini C-arm has gained popularity among hand surgeons over the standard C-arm. This study compares image quality and radiation exposure for patient and staff between the mini C-arm and the standard C-arm, both with flat panel technology. METHODS: An observer-based subjective image quality study was performed using a contrast detail (CD) phantom...
April 1, 2018: Hand: Official Journal of the American Association for Hand Surgery
https://www.readbyqxmd.com/read/29644289/transpedicular-direct-osteosynthesis-of-hangman-s-fracture-from-a-mini-open-exposure-as-a-less-invasive-procedure-a-technical-note
#17
Viktor Zsolt Kovari, Attila Josvai, Andras Csokay
This surgical technical case report presents initial clinical experience and preliminary results with a less invasive surgical solution for selected hangman's fracture. A well-known stabilization technique (i.e. direct transpedicular osteosynthesis) was applied through a minimally invasive small incision transmuscular posterior approach guided by a standard C-arm fluoroscopy. This mini-open approach to C2 vertebra allows similar dissection, visualization of the bony landmarks, visual control of the transpedicular screw path drilling, tapping and screw insertion to the standard posterior cervical spine approach...
December 2017: Trauma Case Reports
https://www.readbyqxmd.com/read/29643725/modified-laminoplasty-for-degenerative-cervical-spondylosis-the-technique-of-floating-laminoplasty
#18
Samuel C Ohaegbulam, Wilfred C Mezue, Chika Anele Ndubuisi, Mark O Chikani, Ndubuisi D Achebe, Uwadiegwu A Erechukwu
Background: Laminoplasty is an established alternative to laminectomy for posterior cervical decompression in spondylotic myelopathy. However, standard laminoplasty requires internal fixation, which is often not obtainable in developing countries. We present our experience with a technique of noninstrumented (floating) laminoplasty developed to avoid the need to anchor the laminoplasty to the anterior elements. Methods: We have used floating laminoplasty (FL) for posterior cervical decompression in patients with cervical spondylosis since 2004 and report the technique and our experience with it between 2009 and 2014 when C-arm and magnetic resonance imaging became available in our unit...
January 2018: Nigerian Journal of Surgery: Official Publication of the Nigerian Surgical Research Society
https://www.readbyqxmd.com/read/29629477/a-method-to-accurately-estimate-the-catheter-length-needed-for-a-tunneled-central-catheter-placement
#19
Mihir Chaudhary, Olajire Idowu, Sunghoon Kim
A typical method of placing a tunneled central catheter utilizes C-arm fluoroscopy for insertion and estimation of the length of the catheter needed. We describe a new technique to estimate the length more accurately using a C-arm fluoroscope.
April 9, 2018: Pediatric Surgery International
https://www.readbyqxmd.com/read/29609825/a-patient-centric-approach-to-quality-control-and-dosimetry-in-ct-including-cbct
#20
H de Las Heras Gala, F Schöfer, H Schöfer, R M Sánchez Casanueva, C Zervides, K Mair, Q Al-Zoubi, B Renger, T de Las Heras Gala, H Schlattl
One measurement and an algebraic formula are used to calculate the incident air kerma (Ka,i ) at the skin after any CT examination, including cone-beam CT (CBCT) and multi-slice CT (MSCT). Empty scans were performed with X-ray CBCT systems (dental, C-arm and linac guidance scanners) as well as two MSCT scanners. The accumulated Ka,i at the flat panel (in CBCT) or the maximum incident air kerma at the isocentre (in MSCT) were measured using a solid-state probe. The average Ka,i (skin), at the skin of a hypothetical patient, was calculated using the proposed formula...
March 2018: Physica Medica: PM
keyword
keyword
98743
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"