Abstract:
:Successful research results from the combination of multiple elements, including an appropriate research question, study design, research method, statistical analysis, and interpretation of results. One element of research that is easy to overlook is proper data collection and preparation for analysis. If data collection or preparation is inadequately planned or executed, the data may not be analyzable by a statistician without significant effort spent on data cleaning. Even worse, the data may contain problems that can be resolved only through time-consuming revision or repeat data collection. In this review, we present some practical guidelines and best practices for preparing data that can reduce the work of subsequent analysis.
journal_name
Acad Radioljournal_title
Academic radiologyauthors
Juluru K,Eng Jdoi
10.1016/j.acra.2015.08.024subject
Has Abstractpub_date
2015-12-01 00:00:00pages
1592-9issue
12eissn
1076-6332issn
1878-4046pii
S1076-6332(15)00373-6journal_volume
22pub_type
杂志文章,评审abstract:RATIONALE AND OBJECTIVES:The authors' purpose was to search the inversion time (TI) values that enable the best differentiation of fine structures in gray matter (gray-gray differentiation). MATERIALS AND METHODS:Seven healthy adult volunteers with no history of neurologic disease or head trauma were recruited and gav...
journal_title:Academic radiology
pub_type: 杂志文章
doi:10.1016/s1076-6332(03)80789-4
更新日期:2003-01-01 00:00:00
abstract:PURPOSE:Systemic lupus erythematosus (SLE) is a predominantly female autoimmune disease that can affect the central nervous system. Neuropsychiatric symptoms are found in 25-70% of SLE patients. Using diffusion tensor imaging, various studies have reported changes in white matter integrity in SLE patients with neuropsy...
journal_title:Academic radiology
pub_type: 杂志文章
doi:10.1016/j.acra.2016.03.019
更新日期:2016-11-01 00:00:00
abstract:RATIONALE AND OBJECTIVES:Extraintestinal abnormalities visible without contrast material on abdominal radiographs are reported less frequently when contrast examinations are performed. Gaze dwell time was used to determine whether this difference is due to failure by observers to scan plain-film regions of contrast stu...
journal_title:Academic radiology
pub_type: 杂志文章
doi:10.1016/s1076-6332(96)80271-6
更新日期:1996-10-01 00:00:00
abstract:RATIONALE AND OBJECTIVES:Computed radiography provides correct optical density on film, independent of the incident radiation exposure, but it can result in under- or overexposure of the imaging plate. In the current study, we evaluated the radiation exposure trends of computed radiography over a 2-year period for port...
journal_title:Academic radiology
pub_type: 杂志文章
doi:10.1016/s1076-6332(96)80247-9
更新日期:1996-04-01 00:00:00
abstract:RATIONALE AND OBJECTIVES:To evaluate a new approach to establish compliance of segmentation tools with the computed tomography volumetry profile of the Quantitative Imaging Biomarker Alliance (QIBA); and determine the statistical exchangeability between real and simulated lesions through an international challenge. MA...
journal_title:Academic radiology
pub_type: 杂志文章,多中心研究
doi:10.1016/j.acra.2018.07.022
更新日期:2019-07-01 00:00:00
abstract:RATIONALE AND OBJECTIVES:The Liver Imaging Reporting and Data System (LI-RADS) is a newly developed nomogram for standardizing the performance and interpretation of liver imaging. However, it is unclear which imaging technique is optimal to exactly define LI-RADS scale. This study aims to determine the concordance of c...
journal_title:Academic radiology
pub_type: 杂志文章
doi:10.1016/j.acra.2015.11.002
更新日期:2016-03-01 00:00:00
abstract:RATIONALE AND OBJECTIVES:In vivo tracking cells using gadolinium-based contrast agents have the important advantage of providing a positive contrast on T1-weighted images, which is less likely to be confused with artifacts because of postoperative local signal voids such as metal, hemorrhage, or air. The aim of this st...
journal_title:Academic radiology
pub_type: 杂志文章
doi:10.1016/j.acra.2009.03.016
更新日期:2009-09-01 00:00:00
abstract:RATIONALE AND OBJECTIVES:The lack of understanding of the real costs (not charge) of delivering healthcare services poses tremendous challenges in the containment of healthcare costs. In this study, we applied an established cost accounting method, the time-driven activity-based costing (TDABC), to assess the costs of ...
journal_title:Academic radiology
pub_type: 杂志文章
doi:10.1016/j.acra.2016.11.001
更新日期:2017-02-01 00:00:00
abstract:RATIONALE AND OBJECTIVES:Three-dimensional (3D) printing is attracting increasing attention in the medical field. This study aimed to apply 3D printing to the production of hollow splenic artery aneurysm models for use in the simulation of endovascular treatment, and to evaluate the precision and accuracy of the simula...
journal_title:Academic radiology
pub_type: 杂志文章
doi:10.1016/j.acra.2016.12.015
更新日期:2017-05-01 00:00:00
abstract:RATIONALE AND OBJECTIVES:The aim of this study was to compare different sequences for olfactory bulb volumetry using 3-T magnetic resonance imaging, evaluating reproducibility, repeatability, and systematic biases. MATERIALS AND METHODS:Twenty-two volunteers underwent 3-T magnetic resonance imaging of the frontal skul...
journal_title:Academic radiology
pub_type: 杂志文章
doi:10.1016/j.acra.2011.02.018
更新日期:2011-07-01 00:00:00
abstract:RATIONALE AND OBJECTIVES:Presurgical assessment of fatty degeneration is important in the management of patients with rotator cuff tears. The Goutallier classification is widely accepted as a qualitative scoring system, although it is highly observer-dependent and has poor reproducibility. The objective of this study w...
journal_title:Academic radiology
pub_type: 杂志文章
doi:10.1016/j.acra.2017.03.026
更新日期:2017-11-01 00:00:00
abstract:RATIONALE AND OBJECTIVES:To test the ability of quantitative measures from preoperative dynamic contrast-enhanced magnetic resonance imaging (DCE-MRI) to predict, independently and/or with the Katz pathologic nomogram, which breast cancer patients with a positive sentinel lymph node biopsy will have four or more positi...
journal_title:Academic radiology
pub_type: 杂志文章
doi:10.1016/j.acra.2013.10.001
更新日期:2014-01-01 00:00:00
abstract:RATIONALE AND OBJECTIVES:Emergency department (ED) patients with acute low back pain (LBP) may present with ambiguous clinical findings that pose diagnostic challenges to exclude cauda equina syndrome (CES). As a proof of concept, we aimed to determine the efficacy of a rapid lumbar spine (LS) magnetic resonance imagin...
journal_title:Academic radiology
pub_type: 杂志文章
doi:10.1016/j.acra.2017.02.011
更新日期:2017-08-01 00:00:00
abstract:RATIONALE AND OBJECTIVES:Since the initial description of an intralobar attenuation gradient by Webb et al, it has been suggested that departure from the intralobar attenuation gradient could indicate early lung diseases. However, its significance has not been determined in detail. We aimed to quantify the anteroposter...
journal_title:Academic radiology
pub_type: 杂志文章
doi:10.1016/j.acra.2005.10.025
更新日期:2006-05-01 00:00:00
abstract:RATIONALE AND OBJECTIVES:We investigated a computer-aided detection (CAD) scheme for clustered microcalcifications in digitized mammograms. METHODS:A multistage CAD scheme was developed and tested. To increase sensitivity, the scheme uses a Gaussian band-pass filter and nonlinear threshold. A multistage local minimum ...
journal_title:Academic radiology
pub_type: 杂志文章
doi:10.1016/s1076-6332(05)80431-3
更新日期:1995-08-01 00:00:00
abstract:RATIONALE AND OBJECTIVES:In clinical guideline or criteria development processes, such as those used in developing American College of Radiology Appropriateness Criteria (ACR AC), experts subjectively evaluate benefits and risks associated with imaging tests and make complex decisions about imaging recommendations. The...
journal_title:Academic radiology
pub_type: 杂志文章
doi:10.1016/j.acra.2017.01.001
更新日期:2017-05-01 00:00:00
abstract:RATIONALE AND OBJECTIVES:The aim of the study was to investigate the optimal protocols of dual-source computed tomography (CT) angiography in aortic stent grafting in terms of image noise and radiation dose, based on an in vitro phantom study. MATERIALS AND METHODS:A series of helical CT cans were performed on a human...
journal_title:Academic radiology
pub_type: 杂志文章
doi:10.1016/j.acra.2010.03.004
更新日期:2010-07-01 00:00:00
abstract:RATIONALE AND OBJECTIVES:Peritumoral features have been suggested to be useful in improving the prediction performance of radiomic models. The aim of this study is to systematically investigate the prediction performance improvement for sentinel lymph node (SLN) status in breast cancer from peritumoral features in radi...
journal_title:Academic radiology
pub_type: 杂志文章
doi:10.1016/j.acra.2020.10.015
更新日期:2020-11-04 00:00:00
abstract:RATIONALE AND OBJECTIVES:Cardiovascular (CV) disease is predominately influenced by CV risk factors and coronary computed tomography angiography (CTA) is capable of detecting early-stage coronary artery disease. We sought to determine the influence of CV risk factors on the prevalence of nonobstructive atherosclerosis ...
journal_title:Academic radiology
pub_type: 杂志文章
doi:10.1016/j.acra.2016.12.005
更新日期:2017-05-01 00:00:00
abstract:RATIONALE AND OBJECTIVES:The authors performed this study to (a) measure changes in T2 relaxation rates, signal-to-noise ratio (SNR), and contrast with sequential depletion of proteoglycan in cartilage; (b) determine whether there is a relationship between the T2 relaxation rate and proteoglycan in cartilage; and (c) c...
journal_title:Academic radiology
pub_type: 杂志文章
doi:10.1016/s1076-6332(03)80666-9
更新日期:2002-12-01 00:00:00
abstract::Despite the widespread belief that advanced imaging should be very helpful in guiding oncology treatment decision and improving efficiency and success rates in treatment clinical trials, its acceptance has been slow. Part of this is likely attributable to gaps in study design and statistical methodology for these imag...
journal_title:Academic radiology
pub_type: 杂志文章,评审
doi:10.1016/j.acra.2017.03.002
更新日期:2017-08-01 00:00:00
abstract::Initial research in the development of interventional magnetic resonance (MR) imaging in the late 1980s and early to mid-1990s focused on pulse sequences, devices, and clinical applications. This focus was largely a result of the limited number of areas in which the academic research community leading the development ...
journal_title:Academic radiology
pub_type: 杂志文章,评审
doi:10.1016/j.acra.2005.06.003
更新日期:2005-09-01 00:00:00
abstract:RATIONALE AND OBJECTIVES:The aim of the study is to develop a permutation test to compare receiver operating characteristic (ROC) curves of two diagnostic modalities in a multireader paired design. MATERIALS AND METHODS:A statistical test for comparing two diagnostic modalities is developed based on all possible excha...
journal_title:Academic radiology
pub_type: 杂志文章
doi:10.1016/j.acra.2005.12.012
更新日期:2006-04-01 00:00:00
abstract:RATIONALE AND OBJECTIVES:We have been called to reform radiology undergraduate medical education (UME) curricula. Clinically available clinical decision support provides an opportunity to improve education regarding appropriate imaging utilization, patient safety, and cost-effective care. MATERIAL AND METHODS:We creat...
journal_title:Academic radiology
pub_type: 杂志文章
doi:10.1016/j.acra.2016.01.020
更新日期:2016-10-01 00:00:00
abstract:RATIONALE AND OBJECTIVES:The authors evaluated changes of lung attenuation in pigs, with special attention to the mosaic pattern of low attenuation, at thin-section computed tomography (CT) after obstruction of the proximal pulmonary artery with a detachable balloon. MATERIALS AND METHODS:In seven pigs, nine sites of ...
journal_title:Academic radiology
pub_type: 杂志文章
doi:10.1016/s1076-6332(98)80241-9
更新日期:1998-12-01 00:00:00
abstract:RATIONALE AND OBJECTIVES:Patients with a posterior indentation in the pharyngoesophageal segment (PES) are generally considered to have an abnormality of the cricopharyngeal muscle (CPM). In this study we determined the actual width of the PES and the pressure circumstances during swallowing within the pharynx and PES ...
journal_title:Academic radiology
pub_type: 杂志文章
doi:10.1016/s1076-6332(05)80123-0
更新日期:1995-07-01 00:00:00
abstract:RATIONALE AND OBJECTIVES:The purpose of this study was to measure the effect of distractions, in the form of telephone call interruptions, on radiology resident diagnostic accuracy. MATERIALS AND METHODS:Radiology resident discrepancy reports and reading room telephone logs at an academic tertiary care pediatric hospi...
journal_title:Academic radiology
pub_type: 杂志文章
doi:10.1016/j.acra.2014.08.001
更新日期:2014-12-01 00:00:00
abstract:RATIONALE AND OBJECTIVES:The purpose of this study was to describe a simple bootstrap approach for estimating sensitivity, specificity, and the area under the receiver operating characteristic curve for multisite test outcome data. MATERIALS AND METHODS:The performance of bootstrap estimates was evaluated and compared...
journal_title:Academic radiology
pub_type: 杂志文章
doi:10.1016/s1076-6332(00)80381-5
更新日期:2000-06-01 00:00:00
abstract:RATIONALE AND OBJECTIVES:Obscure gastrointestinal bleeding (OGIB) is the bleeding from the gastrointestinal tract without definite source that persists and recurs after a negative endoscopic evaluation. The study aimed to systematically evaluate the diagnostic accuracy of computed tomography enterography on OGIB detect...
journal_title:Academic radiology
pub_type: 杂志文章,meta分析,评审
doi:10.1016/j.acra.2017.09.001
更新日期:2018-02-01 00:00:00
abstract:RATIONALE AND OBJECTIVES:To systematically review and meta-analyze published data about the diagnostic accuracy of fluorine-18-fluorodeoxyglucose ((18)F-FDG) positron emission tomography (PET) and PET/computed tomography (CT) in the differential diagnosis between malignant and benign pleural lesions. METHODS AND MATER...
journal_title:Academic radiology
pub_type: 杂志文章,meta分析,评审
doi:10.1016/j.acra.2013.09.015
更新日期:2014-01-01 00:00:00