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https://www.readbyqxmd.com/read/28936892/initial-experience-with-cinematic-rendering-for-chest-cardiovascular-imaging
#1
Steven Rowe, Pamela Johnson, Elliot Fishman
Three-dimensional (3D) computed tomography (CT) with volume rendering (VR) and maximum intensity projection (MIP) is an integral component of CT interpretation for diagnosis and treatment planning of vascular pathology. Cinematic rendering (CR is a new rendering algorithm that incorporates a more advanced lighting model than that used for VR, to create photorealistic 3D CT images. The post-processing tool is not yet widely available and its ultimate clinical utility has yet to be assessed in well-designed studies...
September 22, 2017: British Journal of Radiology
https://www.readbyqxmd.com/read/28935449/long-term-outcomes-of-corneal-cross-linking-for-keratoconus-in-pediatric-patients
#2
Paraskevi G Zotta, Vasilios F Diakonis, George D Kymionis, Michael Grentzelos, Kostas A Moschou
PURPOSE: To report the long-term outcomes of corneal cross-linking (CXL) in pediatric patients with bilateral progressive keratoconus. METHODS: The medical records of consecutive pediatric patients with bilateral progressive keratoconus who underwent CXL at a single institution from June 2007to December 2009 were reviewed. All eyes underwent CXL treatment in accordance with the original Dresden protocol. Pre- and post-operative (at 1 year and >5 years after CXL) examinations included, corneal thickness (CT) at the thinnest point, corneal topographic evaluation (flat, steep meridian keratometry and maximum keratometry), with manifest refraction and corrected distance visual acuity...
September 18, 2017: Journal of AAPOS: the Official Publication of the American Association for Pediatric Ophthalmology and Strabismus
https://www.readbyqxmd.com/read/28929063/lymph-node-central-necrosis-on-the-computed-tomography-as-the-predictor-of-the-extra-capsular-spread-in-metastatic-head-and-neck-squamous-cell-carcinoma
#3
Aditi Sharma, Ashwin Ashok Jaiswal, Girish Umredkar, Ratiram Barle, Neeta Sharma, Praveer Kumar Banerjee, Amrish Kumar Garg, Ravindranath Membally
The aim of this study is to investigate the relationship between the presence of the cervical lymph node with central necrosis as on the preoperative imaging and postoperative histopathological identification of the lymph node extra capsular spread. This study is a prospective study conducted at J.L.N. Hospital and Research Centre, Bhilai (C.G), from August 2011 to January 2014. Thirty patients with metastatic head and neck squamous cell carcinoma were enrolled. All candidates were subjected to a detailed history taking and clinical examination...
September 2017: Indian Journal of Otolaryngology and Head and Neck Surgery
https://www.readbyqxmd.com/read/28924524/retrospective-review-on-accuracy-a-pilot-study-of-robotically-guided-thoracolumbar-sacral-pedicle-screws-versus-fluoroscopy-guided-and-computerized-tomography-stealth-guided-screws
#4
Brian Fiani, Syed A Quadri, Vivek Ramakrishnan, Blake Berman, Yasir Khan, Javed Siddiqi
Introduction Pedicle screw insertion is the mainstay of thora-cic and lumbosacral posterior spinal instrumentation. However, it may be associated with complications such as screw mal-positioning. The purpose of this study was to develop a pilot study to compare the accuracy of robot-guided screw insertion versus hand-guided screw placement for spinal instrumentation. The hand-guided screws were placed with assistance from computerized tomography (CT) stealth guidance or fluoroscopy. Materials and methods A retrospective analysis of medical records was done for all patients that had pedicle screw insertion for instrumentation between the dates of December 2013 and January 2016 with post-screw placement CT imaging...
July 6, 2017: Curēus
https://www.readbyqxmd.com/read/28922280/time-demand-and-radiation-dose-in-3d-fluoroscopy-based-navigation-assisted-3d-fluoroscopy-controlled-pedicle-screw-instrumentations
#5
Horst Balling
STUDY DESIGN: Prospective single-center cohort study to record additional time requirements and radiation dose in navigation-assisted O-arm-controlled pedicle screw (PS) instrumentations. OBJECTIVE: To evaluate amount of extra-time and radiation dose for navigation-assisted PS instrumentations of the thoracolumbosacral spine using O-arm 3D-real-time-navigation (O3DN) compared to non-navigated spinal procedures (NNSP) with a single C-arm and postoperative computed tomography (CT) scan for controlling PS positions...
September 15, 2017: Spine
https://www.readbyqxmd.com/read/28921009/radiation-overexposure-from-repeated-ct-scans-in-young-adults-with-acute-abdominal-pain
#6
Massimo Tonolini, Elena Valconi, Angelo Vanzulli, Roberto Bianco
PURPOSE: The purpose of this study is to assess the dose of ionizing radiation caused by repeated CT scans performed to investigate non-traumatic acute abdominal conditions in young adults. METHODS: Over 26 months, we collected a cohort of patients aged 18 to 45 years who were subject to at least one urgent contrast-enhanced abdomen/pelvis CT. Patients affected with urolithiasis, HIV infection, tumors, and vascular and chronic inflammatory bowel diseases were excluded...
September 18, 2017: Emergency Radiology
https://www.readbyqxmd.com/read/28913299/correlation-between-operation-result-and-patient-satisfaction-of-nasal-bone-fracture
#7
Chang Min Kang, Dong Gil Han
BACKGROUND: Many authors have evaluated the post-reduction result of nasal bone fracture through patient satisfaction or postoperative complications. However, these results are limited because they are subjective. The aim of this study was to correlate an objective operation result with patient satisfaction and postoperative complications according to the type of nasal bone fractures. METHODS: Our study included 313 patients who had isolated nasal bone fractures and had undergone a closed reduction...
March 2017: Arch Craniofac Surg
https://www.readbyqxmd.com/read/28902876/postoperative-lead-migration-in-deep-brain-stimulation-surgery-incidence-risk-factors-and-clinical-impact
#8
Takashi Morishita, Justin D Hilliard, Michael S Okun, Dan Neal, Kelsey A Nestor, David Peace, Alden A Hozouri, Mark R Davidson, Francis J Bova, Justin M Sporrer, Genko Oyama, Kelly D Foote
INTRODUCTION: Deep brain stimulation (DBS) is an effective treatment for multiple movement disorders and shows substantial promise for the treatment of some neuropsychiatric and other disorders of brain neurocircuitry. Optimal neuroanatomical lead position is a critical determinant of clinical outcomes in DBS surgery. Lead migration, defined as an unintended post-operative displacement of the DBS lead, has been previously reported. Despite several reports, however, there have been no systematic investigations of this issue...
2017: PloS One
https://www.readbyqxmd.com/read/28898799/rare-diagnosis-of-intestinal-lipomatosis-complicated-by-intussusception-in-an-adult-a-case-report
#9
Kaitlin Kumar, Mahboub R Noori, Kishan M Patel, William Yuen, Carlos Bello
INTRODUCTION: Intestinal Lipomatosis consists of diffuse lipomas in various regions from the small to large bowel. They can remain asymptomatic or present with complications such as Intussusception. DISCUSSION: Intestinal lipomatosis complicated by Intussusception is a rare occurrence that has not been well documented. Rare condition management is difficult to approach because of the customizability each scenario requires. We hope through sharing our approach this can serve as a rough template to physicians who find themselves in a similar scenario...
September 1, 2017: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/28898798/free-disease-long-term-survival-in-primary-thoracic-spine-leiomyosarcoma-after-total-en-bloc-spondylectomy-a-case-report
#10
José Ramirez-Villaescusa, Adriana Canosa-Fernández, Antonio Martin-Benlloch, David Ruiz-Picazo, Jesús López-Torres Hidalgo
INTRODUCTION: To describe an unusual primary vertebral leiomyosarcoma in thoracic spine. PRESENTATION OF CASE: An isolated lesion of the T11 vertebra in a 62-year-old woman with no neurologic deficit is reported. Imaging findings indicated a nonspecific high-grade malignant lesion. TC-guided biopsy failed thus open incisional biopsy was needed. A diagnosis of low-intermediate mesenchymal sarcoma was made. A total en bloc spondylectomy of T11 was performed with three-column reconstruction...
September 1, 2017: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/28892944/endoscopic-endonasal-approach-of-blow-out-fracture-reduction-a-novel-technique
#11
Vinod Felix, Narendrakumar Veerasigamani
Blunt trauma to orbit can lead to orbital blow out fracture. Computerized tomography of paranasal sinuses plays the main role in diagnosing it. Repairing the defect and restoring the orbital contents is a challenging task for the surgeon. Endoscopic endonasal approach in reduction of blow out fracture provides good cosmetic outcomes and grossly minimize surgical complications. We report a case of 18-year-old male presented with diplopia, restriction of eye movements and enophthalmos due to Road traffic accident...
July 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28891021/anteromedial-cortical-support-reduction-in-unstable-pertrochanteric-fractures-a-comparison-of-intra-operative-fluoroscopy-and-post-operative-three-dimensional-computerised-tomography-reconstruction
#12
Shi-Min Chang, Ying-Qi Zhang, Shou-Chao Du, Zhuo Ma, Sun-Jun Hu, Xi-Zhou Yao, Wen-Feng Xiong
PURPOSE: Anteromedial cortical support reduction is favourable for secondary stability after limited sliding in unstable pertrochanteric fractures. The aim of this study was to compare the accuracy and agreement between intra-operative fluoroscopy and post-operative 3D reconstruction. MATERIALS AND METHODS: A retrospective analysis of 28 patients (mean 81.6 years) treated with short cephalomedullary nails was performed. All patients had full sets of intra-operative fluoroscopy and post-operative 3D CT images...
September 10, 2017: International Orthopaedics
https://www.readbyqxmd.com/read/28885648/improving-registration-accuracy-during-total-hip-arthroplasty-a-cadaver-study-of-a-new-3-d-mini-optical-navigation-system
#13
Michael B Cross, Ran Schwarzkopf, Theodore T Miller, Eric A Bogner, Jeffrey M Muir, Jonathan M Vigdorchik
INTRODUCTION: Maintaining accuracy of component placement is an important step in ensuring the long-term stability of components during total hip arthroplasty (THA). Computer-assisted navigation has improved accuracy but errors associated with the registration process are known to impact the accuracy of final measurements. The purpose of this cadaver study was to determine the registration error associated with a novel mini-navigation system. METHODS: 3 board-certified orthopaedic surgeons performed 4 THA procedures each via the posterolateral approach on 6 cadavers (12 hips) using the mini-navigation tool...
September 2, 2017: Hip International: the Journal of Clinical and Experimental Research on Hip Pathology and Therapy
https://www.readbyqxmd.com/read/28882520/dynamic-foraminal-dimensions-during-neck-extension-and-rotation-in-fusion-and-artificial-disc-replacement-an-observational-study
#14
Yener N Yeni, Timothy Baumer, Daniel Oravec, Azam Basheer, Colin P McDonald, Michael J Bey, Stephen W Bartol, Victor Chang
BACKGROUND: Changes in the dimensions of the cervical neural foramina (CNF) are considered to be a key factor in nerve root compression and development of cervical radiculopathy. However, to what extent foraminal geometry differs between patients who underwent anterior cervical discectomy and fusion (ACDF) and those who underwent total disc arthroplasty with an artificial disc (AD) during physiological motion is largely unknown. PURPOSE: The objective of this study is to compare compare CNF dimensions during physiological neck motion between ACDF and AD...
September 4, 2017: Spine Journal: Official Journal of the North American Spine Society
https://www.readbyqxmd.com/read/28871507/delayed-post-operative-tension-pneumocephalus-and-pneumorrhachis
#15
D C Kieser, D T Cawley, C Tavolaro, T Cloche, I Obeid, V Pointillart, J M Vital, O Gille
INTRODUCTION: The incidence of pneumocephalus and pneumorrhachis after spinal surgery is unknown, with a paucity of literature on this complication. MATERIALS AND METHODS: We present the first published case of delayed onset tension pneumocephalus and pneumorrhachis associated with spinal surgery. RESULTS: This complication occurred from a cerebro-spinal fluid (CSF) leak after posterior instrumentation removal and was successfully treated with emergent wound debridement and the formation of a CSF fistula...
September 4, 2017: European Spine Journal
https://www.readbyqxmd.com/read/28871360/the-aes-total-ankle-arthroplasty-analysis-of-failures-and-survivorship-at-ten-years
#16
Alexandre Di Iorio, Anthony Viste, Michel Henry Fessy, Jean Luc Besse
BACKGROUND: AES mobile-bearing total ankle replacement was developed from the Buechel Pappas model. It was withdrawn in 2009, after identification of a higher than expected complication rate. The purpose of the current study was to analyse clinical outcomes, failures and survival of the initial series of 50 AES published in 2009. METHODS: In this single-centre continuous prospective study (2003-2006), 50 AES prostheses were included. Pre-operative osteoarthritis was mainly post-traumatic (50%) and secondary to instability (36%)...
September 4, 2017: International Orthopaedics
https://www.readbyqxmd.com/read/28869390/approach-to-interpret-images-produced-by-new-generations-of-multi-detector-computed-tomography-scanners-in-post-operative-spine
#17
Rania Zeitoun, Manar Hussein
OBJECTIVE: To reach a practical approach to interpret MDCT findings in post-opartive spine cases and to change the false belief of CT failure in the setting of instruments secondary to related artifacts. METHODS: We performed observational retrospective analysis of premier, early and late MDCT scans in 68 post-operative spine patients, with emphasis on instruments related complications and osseous fusion status. We used a grading system for assessment of osseous fusion in 35 patients and we further analyzed the findings in failure of fusion, grade (D)...
September 4, 2017: British Journal of Radiology
https://www.readbyqxmd.com/read/28869177/correlation-of-18-f-fdg-uptake-on-pet-ct-with-ki67-immunohistochemistry-in-pre-treatment-epithelial-ovarian-cancer
#18
M Mayoral, P Paredes, A Saco, P Fusté, P Perlaza, A Tapias, A Fernandez-Martinez, L Vidal, J Ordi, J Pavia, S Martinez-Roman, F Lomeña
OBJECTIVE: Standardized uptake value (SUV) and volumetric parameters such as metabolic tumour volume (MTV) and total lesion glycolysis (TLG) from (18)F-FDG PET/CT are useful criteria for disease prognosis in pre-operative and post-treatment epithelial ovarian cancer (EOC). Ki67 is another prognostic biomarker in EOC, associated with tumour aggressiveness. The aim of this study is to evaluate the association between (18)F-FDG PET/CT measurements and Ki67 in pre-treatment EOC to determine if PET/CT parameters could non-invasively predict tumour aggressiveness...
August 28, 2017: Revista Española de Medicina Nuclear e Imagen Molecular
https://www.readbyqxmd.com/read/28865035/effect-of-zoledronic-acid-on-lumbar-spinal-fusion-in-osteoporotic-patients
#19
Qirui Ding, Jian Chen, Jin Fan, Qingqing Li, Guoyong Yin, Lipeng Yu
PURPOSE: To investigate the effect of zoledronic acid (ZA) on lumbar spinal fusion in patients with osteoporosis. METHODS: This retrospective study includes 94 osteoporotic patients suffering from lumbar degenerative diseases or lumbar fracture who underwent lumbar spinal fusion in our institution from January 2013 to August 2014. They were divided into ZA group and control group according to whether the patient received ZA infusion or not. The patients in ZA group were given 5 mg intravenous ZA at the 3rd-5th days after operation...
September 1, 2017: European Spine Journal
https://www.readbyqxmd.com/read/28860895/a-review-of-the-use-of-cardiac-computed-tomography-for-evaluating-the-mitral-valve-before-and-after-mitral-valve-repair
#20
Jong Hun Kim, Eun Young Kim, Gong Yong Jin, Jong Bum Choi
The role of cardiac computed tomography (CT) for evaluating the mitral valve (MV) has been limited since echocardiography is the main method of evaluation. However, recent advances in cardiac CT have enable detailed evaluation of the anatomy and geometry of the MV. We describe assessments of the anatomy and coaptation geometric parameters of normal MVs, and also review repair of diseased/damaged MV. We also discuss pre- and post-surgical imaging of MV pathology using cardiac CT and various CT images. We found that cardiac CT could be used as an alternative imaging modality to echocardiography for pre-operative MV evaluation and to predict clinical outcomes following repair...
September 2017: Korean Journal of Radiology: Official Journal of the Korean Radiological Society
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