Abstract:
:The quality of medical images must be quantified with reference to specific diagnostic tasks. Image quality is limited by fundamental physics, engineering limitations, radiation safety concerns, and imaging time constraints (among other things). There is now a gold standard for assessing human visual decision performance: the ideal Bayesian observer. Unfortunately, there are no mathematical tools to use this gold standard for realistically complex tasks. As an alternative, one can use the optimum linear discriminator (Fisher-Hotelling) model as a silver standard while en route to clinical realism. The goal of scientists working in the area is to develop mathematical models of human observers that will help equipment designers to optimize design trade-offs for specific diagnostic tasks. The current strategy is to modify the Fisher-Hotelling model to include certain limitations of the human observer visual system. The model must be both robust enough and mathematically tractable enough to be used to predict performance for clinical classification and estimation tasks. Statistical models also must be developed that describe realistic signals (lesions and abnormalities) and the normal patient structure that is the background in which these signals must be detected or identified.
journal_name
Acad Radioljournal_title
Academic radiologyauthors
Burgess Adoi
10.1016/s1076-6332(05)80411-8subject
Has Abstractpub_date
1995-06-01 00:00:00pages
522-6issue
6eissn
1076-6332issn
1878-4046journal_volume
2pub_type
杂志文章,评审abstract:RATIONALE AND OBJECTIVES:Hepatic ischemia/reperfusion injury (IRI) occurs during certain hepatobiliary surgeries, hemorrhagic shock, and veno-occlusive disease. Biochemical changes caused by hepatic IRI lead to hepatocellular remodeling, including cellular regeneration or irreversible apoptosis. This study aims to char...
journal_title:Academic radiology
pub_type: 杂志文章
doi:10.1016/j.acra.2010.09.019
更新日期:2011-02-01 00:00:00
abstract:RATIONALE AND OBJECTIVES:Simultaneous single-photon emission computed tomography (SPECT) neuroimaging with both technetium-99m (99mTc) hexamethylpropyleneamine oxime (HMPAO) and iodine-123 (123I) N-isopropyl-iodoamphetamine is a recently introduced method with potential for assessing activation phenomena in the brain. ...
journal_title:Academic radiology
pub_type: 杂志文章
doi:10.1016/s1076-6332(05)80242-9
更新日期:1995-01-01 00:00:00
abstract:RATIONALE AND OBJECTIVES:To investigate the capability of delta-radiomics to predict pathological complete response (pCR) after neoadjuvant chemoradiotherapy (nCRT) in patients with locally advanced rectal cancer (LARC). MATERIALS AND METHODS:This retrospective study enrolled 165 consecutive patients with LARC (traini...
journal_title:Academic radiology
pub_type: 杂志文章
doi:10.1016/j.acra.2020.10.026
更新日期:2020-11-11 00:00:00
abstract:RATIONALE AND OBJECTIVES:To investigate the value of radiomics method based on the fat-suppressed T2 sequence for preoperative predicting axillary lymph node (ALN) metastasis in breast carcinoma. MATERIALS AND METHODS:The data of 329 invasive breast cancer patients were divided into the primary cohort (n = 269) and va...
journal_title:Academic radiology
pub_type: 杂志文章
doi:10.1016/j.acra.2019.11.004
更新日期:2020-09-01 00:00:00
abstract:RATIONALE AND OBJECTIVES:The Mammography Quality Standards Act requires practices to measure limited aspects of their performance. The authors conducted this study to calculate the differences in measurements of sensitivity and specificity due only to differences in the definitions used in the analysis. This included d...
journal_title:Academic radiology
pub_type: 杂志文章
doi:10.1016/s1076-6332(00)80057-4
更新日期:2000-12-01 00:00:00
abstract:RATIONALE AND OBJECTIVES:To investigate residents' knowledge of adverse effects of ionizing radiation, frequency of their education on radiation safety, and their use of radioprotective equipment. MATERIALS AND METHODS:Residents from 15/16 residency programs at Emory University were asked to complete a resident radiat...
journal_title:Academic radiology
pub_type: 杂志文章
doi:10.1016/j.acra.2014.01.016
更新日期:2014-07-01 00:00:00
abstract::Medical eponyms are ubiquitous, numerous, and at times controversial. They are often useful for succinctly conveying complex concepts, and familiarity with eponyms is important for proper usage and appropriate communication. In this historical review, we identify 18 anatomic eponyms used to describe structures of the ...
journal_title:Academic radiology
pub_type: 传,历史文章,杂志文章,评审
doi:10.1016/j.acra.2016.01.008
更新日期:2016-06-01 00:00:00
abstract:RATIONALE AND OBJECTIVES:Balloon dilatation is a mechanical form of controlled injury used to alleviate vascular stenoses. Several factors influence successful angioplasty. Few mechanical models exist to illustrate the physical principles of balloon dilatation. METHODS:We used mechanical analysis of membrane stresses,...
journal_title:Academic radiology
pub_type: 杂志文章
doi:10.1016/s1076-6332(05)80340-x
更新日期:1995-05-01 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:The authors evaluated the reliability and validity of an experimental radiology faculty appraisal instrument. MATERIALS AND METHODS:Residents from the University of Wisconsin (UW) and Indiana University (IU) were asked to use a previously developed behaviorally based, 53-item experimental facu...
journal_title:Academic radiology
pub_type: 杂志文章
doi:10.1016/s1076-6332(98)80266-3
更新日期:1998-11-01 00:00:00
abstract:RATIONALE AND OBJECTIVES:The purpose of this study was to determine the electronic requirements for supporting evidence-based radiology in today's medical environment. MATERIALS AND METHODS:A software engineering technique, use case modeling, was performed for several clinical settings to determine the use of imaging ...
journal_title:Academic radiology
pub_type: 杂志文章
doi:10.1016/s1076-6332(03)80311-2
更新日期:2002-06-01 00:00:00
abstract:RATIONALE AND OBJECTIVES:Coronary CT angiography (CCTA) is a noninvasive reliable cardiovascular imaging technology to assess coronary atherosclerosis progression. However, there is limited data available to investigate the relationship between the atherosclerosis progression and cardiovascular events in patients with ...
journal_title:Academic radiology
pub_type: 杂志文章
doi:10.1016/j.acra.2020.06.038
更新日期:2020-10-22 00:00:00
abstract:RATIONALE AND OBJECTIVE:Targeted delivery is a highly desirable strategy for diagnostic imaging because of enhanced efficacy and reduced dosage/toxicity. Receptor-targeting was used to deliver contrast-producing superparamagnetic iron oxide (IO) nanoparticle to receptor-expressing tumors for in vivo magnetic resonance ...
journal_title:Academic radiology
pub_type: 杂志文章
doi:10.1016/j.acra.2004.04.018
更新日期:2004-09-01 00:00:00
abstract:RATIONALE AND OBJECTIVES:An atlas-based automated liver segmentation method from three-dimensional computed tomographic (3D CT) images has been developed. The method uses two types of atlases, a probabilistic atlas (PA) and a statistical shape model (SSM). MATERIALS AND METHODS:Voxel-based segmentation with a PA is fi...
journal_title:Academic radiology
pub_type: 杂志文章
doi:10.1016/j.acra.2008.07.008
更新日期:2008-11-01 00:00:00
abstract:RATIONALE AND OBJECTIVES:To investigate the correlation between prevalence and degree of coronary artery calcification (CAC) and extracoronary calcifications (ECCs), scored quantitatively according to Agatston and semiquantitatively by visual analysis, in chest computed tomography (CT) studies obtained for lung cancer ...
journal_title:Academic radiology
pub_type: 杂志文章,评审
doi:10.1016/j.acra.2015.03.005
更新日期:2015-07-01 00:00:00
abstract:RATIONALE AND OBJECTIVES:To estimate recurrence risk after surgery in nonsmall cell lung cancer (NSCLC) patients by employing tumoral and peritumoral radiomics analysis. MATERIALS AND METHODS:One-hundred twenty-four surgically treated stage IA-IIB NSCLC patients' data from 2008 to 2013 were retrospectively collected. ...
journal_title:Academic radiology
pub_type: 杂志文章
doi:10.1016/j.acra.2019.05.019
更新日期:2020-04-01 00:00:00
abstract::Computer-aided detection (CADe) and computer-aided diagnosis (CADx) have been important areas of research in the last two decades. Significant progress has been made in the area of breast cancer detection, and CAD techniques are being developed in many other areas. Recent advances in multidetector row computed tomogra...
journal_title:Academic radiology
pub_type: 杂志文章,评审
doi:10.1016/j.acra.2008.01.014
更新日期:2008-05-01 00:00:00
abstract:RATIONALE AND OBJECTIVES:Mammographic density and parenchymal patterns have been shown to be related to the risk of developing breast cancer. Thus, computerized texture analysis of breast parenchymal patterns on mammograms may be useful in assessing breast cancer risk. MATERIALS AND METHODS:A comparative evaluation wa...
journal_title:Academic radiology
pub_type: 杂志文章
doi:10.1016/j.acra.2005.03.069
更新日期:2005-07-01 00:00:00
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journal_title:Academic radiology
pub_type: 杂志文章,评审
doi:10.1016/j.acra.2016.06.009
更新日期:2016-12-01 00:00:00
abstract:RATIONALE AND OBJECTIVES:We developed a technique for estimating the volumes of distribution and intratumoral ethanol concentrations using computed tomography (CT) scanning in patients undergoing percutaneous ethanol injection (PEI) treatment of malignant hepatic tumors. METHODS:A phantom containing anhydrous ethanol ...
journal_title:Academic radiology
pub_type: 杂志文章
doi:10.1016/S1076-6332(96)80333-3
更新日期:1996-01-01 00:00:00
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journal_title:Academic radiology
pub_type: 杂志文章
doi:10.1016/j.acra.2014.12.014
更新日期:2015-05-01 00:00:00
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journal_title:Academic radiology
pub_type: 杂志文章
doi:10.1016/j.acra.2009.01.014
更新日期:2009-06-01 00:00:00
abstract:RATIONALE AND OBJECTIVES:The capability of wavelet transforms to separate signals into frequency bands is the basis for its use in image compression and storage, data management and transmission, and, recently, extraction of latent images of tissue components from noisy medical images. Analysis of temporal variations o...
journal_title:Academic radiology
pub_type: 杂志文章
doi:10.1016/j.acra.2007.06.018
更新日期:2007-12-01 00:00:00
abstract:RATIONALE AND OBJECTIVES:The authors performed this study to evaluate whether digitally photographed, computer-annotated MR images produced by clinical radiologists and printed with an inexpensive photo printer are suitable for publication. MATERIALS AND METHODS:Laser prints of 20 magnetic resonance images of the brai...
journal_title:Academic radiology
pub_type: 杂志文章
doi:10.1016/s1076-6332(03)80378-1
更新日期:2002-03-01 00:00:00
abstract:RATIONALE AND OBJECTIVES:To investigate the relationship between apparent diffusion coefficient (ADC) values and the Ki-67 staining index (Ki-67 SI), a tumor proliferation marker, in prostate cancer (PCa). MATERIALS AND METHODS:Forty-three patients with PCa and thirty-six patients with benign prostatic hyperplasia (BP...
journal_title:Academic radiology
pub_type: 杂志文章
doi:10.1016/j.acra.2013.09.007
更新日期:2013-12-01 00:00:00
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journal_title:Academic radiology
pub_type: 杂志文章
doi:10.1016/j.acra.2007.07.018
更新日期:2007-11-01 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:Current approaches to receiver operating characteristic (ROC) analysis use the MRMC (multiple-reader, multiple-case) paradigm in which several readers read each case and their ratings (or scores) are used to construct an estimate of the area under the ROC curve or some other ROC-related paramet...
journal_title:Academic radiology
pub_type: 杂志文章
doi:10.1016/j.acra.2006.07.016
更新日期:2006-11-01 00:00:00
abstract:RATIONALE AND OBJECTIVES:Severe calcifications of the coronary arteries are still a major challenge in coronary computed tomography (CT) angiography (CCTA). Subtraction CCTA using a 320-detector row CT scanner has recently been introduced for patients with severe calcifications. However, the conventional subtraction CC...
journal_title:Academic radiology
pub_type: 杂志文章
doi:10.1016/j.acra.2016.04.012
更新日期:2016-09-01 00:00:00
abstract:RATIONALE AND OBJECTIVES:The authors compared diagnostic accuracy and callback rates with conventional screen-film mammograms and wavelet-compressed digitized images. MATERIALS AND METHODS:Sixty sets of mammograms (four views per case) were digitized at a spatial resolution of 100 microm. The images were wavelet compr...
journal_title:Academic radiology
pub_type: 杂志文章
doi:10.1016/s1076-6332(00)80004-5
更新日期:2000-05-01 00:00:00