Browsing by Subject "Retrospective Studies"
Now showing items 1-20 of 503
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A Collimator Setting Optimization Algorithm for Dual-Arc Volumetric Modulated Arc Therapy in Pancreas Stereotactic Body Radiation Therapy.
(Technology in cancer research & treatment, 2019-01)PURPOSE:To optimize collimator setting to improve dosimetric quality of pancreas volumetric modulated arc therapy plan for stereotactic body radiation therapy. MATERIALS AND METHODS:Fifty-five volumetric modulated arc therapy ... -
A comparative analysis of the prevalence and characteristics of cervical malalignment in adults presenting with thoracolumbar spine deformity based on variations in treatment approach over 2 years.
(European spine journal : official publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society, 2016-08)<h4>Purpose</h4>Characteristics specific to cervical deformity (CD) concomitant with adult thoracolumbar deformity (TLD) remains uncertain, particularly regarding treatment. This study identifies cervical malalignment prevalence ... -
A Comparison of Three Different Positioning Techniques on Surgical Corrections and Postoperative Alignment in Cervical Spinal Deformity (CD) Surgery.
(Spine, 2021-05)<h4>Study design</h4>Retrospective review of a prospective multicenter cervical deformity database.<h4>Objective</h4>To examine the differences in sagittal alignment correction between three positioning methods in cervical ... -
A cost-effectiveness comparisons of adult spinal deformity surgery in the United States and Japan.
(European spine journal : official publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society, 2018-03)<h4>Purpose</h4>Information about the cost-effectiveness of surgical procedures for adult spinal deformity (ASD) is critical for providing appropriate treatments for these patients. The purposes of this study were to compare ... -
A dimensional approach to understanding severity estimates and risk correlates of marijuana abuse and dependence in adults.
(International journal of methods in psychiatric research, 2012-06)While item response theory (IRT) research shows a latent severity trait underlying response patterns of substance abuse and dependence symptoms, little is known about IRT-based severity estimates in relation to clinically ... -
A Novel Tool for Deformity Surgery Planning: Determining the Magnitude of Lordotic Correction Required to Achieve a Desired Sagittal Vertical Axis.
(World neurosurgery, 2017-08)<h4>Objective</h4>We sought to create a model capable of predicting the magnitude of pelvic incidence-lumbar lordosis (PI-LL) correction necessary to achieve a desired change in sagittal vertical axis (SVA).<h4>Methods</h4>A ... -
A Novel Weave Tether Technique for Proximal Junctional Kyphosis Prevention in 71 Adult Spinal Deformity Patients: A Preliminary Case Series Assessing Early Complications and Efficacy.
(Operative neurosurgery (Hagerstown, Md.), 2021-11)<h4>Background</h4>Proximal junctional kyphosis (PJK) rates may be as high as 69.4% after adult spinal deformity (ASD) surgery. PJK is one of the greatest unsolved challenges in long-segment fusions for ASD and remains a ... -
A Pilot Study on Posterior Polyethylene Tethers to Prevent Proximal Junctional Kyphosis After Multilevel Spinal Instrumentation for Adult Spinal Deformity.
(Operative neurosurgery (Hagerstown, Md.), 2019-02)BACKGROUND:Proximal junctional kyphosis (PJK) is a common problem after multilevel spine instrumentation. OBJECTIVE:To determine if junctional tethers reduce PJK after multilevel instrumented surgery for adult spinal deformity ... -
A Radiographic Analysis of Lumbar Fusion Status and Instrumentation Failure After Complex Adult Spinal Deformity Surgery With Spinopelvic Fixation: Two-Year Follow-up From the Scoli-Risk-1 Prospective Database.
(Clinical spine surgery, 2020-12)<h4>Study design</h4>A retrospective review of prospectively collected data.<h4>Objective</h4>The objective of this study was to investigate the fusion status of the lumbar spine and lumbosacral junction at 2 years ... -
A Risk-Benefit Analysis of Increasing Surgical Invasiveness Relative to Frailty Status in Adult Spinal Deformity Surgery.
(Spine, 2021-08)<h4>Study design</h4>Retrospective review of a prospectively enrolled multicenter Adult Spinal Deformity (ASD) database.<h4>Objective</h4>Investigate invasiveness and outcomes of ASD surgery by frailty state.<h4>Summary ... -
A Structured Approach to Detecting and Treating Depression in Primary Care: VitalSign6 Project.
(Annals of family medicine, 2019-07)<h4>Purpose</h4>This report describes outcomes of an ongoing quality-improvement project (VitalSign6) in a large US metropolitan area to improve recognition, treatment, and outcomes of depressed patients in 16 primary care ... -
Adaptive stereotactic body radiation therapy planning for lung cancer.
(Int J Radiat Oncol Biol Phys, 2013-09-01)PURPOSE: To investigate the dosimetric effects of adaptive planning on lung stereotactic body radiation therapy (SBRT). METHODS AND MATERIALS: Forty of 66 consecutive lung SBRT patients were selected for a retrospective ... -
Adjuvant radiotherapy in the treatment of invasive intraductal papillary mucinous neoplasm of the pancreas: an analysis of the surveillance, epidemiology, and end results registry.
(Ann Surg Oncol, 2012-04)BACKGROUND: Management and outcomes of patients with invasive intraductal papillary mucinous neoplasm (IPMN) of the pancreas are not well established. We investigated whether adjuvant radiotherapy (RT) improved cancer-specific ... -
Adoption of direct-acting antiviral medications for hepatitis C: a retrospective observational study.
(BMC health services research, 2019-07-25)<h4>Background</h4>Approximately 3.5 million Americans are infected with the hepatitis C virus (HCV). Although many patients with HCV are asymptomatic, HCV is the leading cause of infection-related death in the U.S. With ... -
Adult Scoliosis Deformity Surgery: Comparison of Outcomes Between One Versus Two Attending Surgeons.
(Spine, 2017-07)<h4>Study design</h4>Retrospective review of prospectively collected data.<h4>Objective</h4>Assess outcomes of adult spinal deformity (ASD) surgery performed by one versus two attending surgeons.<h4>Summary of background ... -
Adult Spinal Deformity Surgery Is Associated with Increased Productivity and Decreased Absenteeism From Work and School.
(Spine, 2022-02)<h4>Study design</h4>Retrospective cohort study.<h4>Objective</h4>We hypothesized that adult spinal deformity (ASD) surgery would be associated with improved work- and school-related productivity, as well as decreased rates ... -
After 9 Years of 3-Column Osteotomies, Are We Doing Better? Performance Curve Analysis of 573 Surgeries With 2-Year Follow-up.
(Neurosurgery, 2018-07)<h4>Background</h4>In spinal deformity treatment, the increased utilization of 3-column (3CO) osteotomies reflects greater comfort and better training among surgeons. This study aims to evaluate the longitudinal performance ... -
AIDS‐associated Cryptococcus neoformans and Penicillium marneffei coinfection: a therapeutic dilemma in resource‐limited settings.
(Clin Infect Dis, 2010-11-01)AIDS‐associated Cryptococcus neoformans and Penicillium marneffei coinfection has not been adequately studied and poses unique therapeutic challenges in resource‐limited settings. Itraconazole poorly penetrates ... -
Alignment Risk Factors for Proximal Junctional Kyphosis and the Effect of Lower Thoracic Junctional Tethers for Adult Spinal Deformity.
(World neurosurgery, 2019-01)<h4>Objective</h4>The aims of this retrospective cohort study were to 1) identify new alignment risk factors for proximal junctional kyphosis (PJK) in adult spinal deformity (ASD) patients with lower thoracic upper instrumented ... -
Allele-level HLA matching for umbilical cord blood transplantation for non-malignant diseases in children: a retrospective analysis.
(The Lancet. Haematology, 2017-07)<h4>Background</h4>The standard for selecting unrelated umbilical cord blood units for transplantation for non-malignant diseases relies on antigen-level (lower resolution) HLA typing for HLA-A and HLA-B, and allele-level ...
