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, along with Laplace's law, to determine a relation between balloon inflation and dilating pressures exerted by balloons in stenoses of varying severity, length, and eccentricity. The balloons were assumed to be perfectly inelastic and flexible. We also examined the resultant stresses in the lesion wall of concentric and eccentric stenoses from exertion of dilating pressures. RESULTS:Dilating pressures depend directly on maximal balloon inflation pressure and balloon diameter. Short, focal stenoses experience greater dilating pressures, which often are several multiples of the inflation pressure, than similarly narrowed longer lesions. CONCLUSION:Dilating pressures depend on inflation pressure, balloon diameter, and lesion severity.
journal_name
Acad Radioljournal_title
Academic radiologyauthors
Kinney TB,Lee MJ,Mueller PR,Waltman ACdoi
10.1016/s1076-6332(05)80340-xsubject
Has Abstractpub_date
1995-05-01 00:00:00pages
385-91issue
5eissn
1076-6332issn
1878-4046journal_volume
2pub_type
杂志文章abstract：RATIONALE AND OBJECTIVES:Quantitative measurement provides essential information about disease progression and treatment response in patients with glioblastoma multiforme (GBM). The goal of this article is to present and validate a software pipeline for semi-automatic GBM segmentation, called AFINITI (Assisted Follow-u...
journal_title：Academic radiology
pub_type： 杂志文章
doi：10.1016/j.acra.2012.03.026
更新日期：2012-08-01 00:00:00
abstract：RATIONALE AND OBJECTIVES:The aim of this study was to develop a pulmonary nodule viewing system to visualize and retrieve data from the Lung Image Database Consortium. MATERIALS AND METHODS:The pulmonary nodule viewing system, developed using Microsoft C++ and the .NET 2.0 Framework, is composed of a clinical informat...
journal_title：Academic radiology
pub_type： 杂志文章
doi：10.1016/j.acra.2011.04.006
更新日期：2011-09-01 00:00:00
abstract：RATIONALE AND OBJECTIVES:Rotator cuff disorders are prevalent and can cause pain and reduced range of motion and strength. Accurate, noninvasive diagnosis of rotator cuff disorders is therefore important. In this work, we study the relationship between several three-dimensional (3D) shape measurements of the supraspina...
journal_title：Academic radiology
pub_type： 杂志文章
doi：10.1016/j.acra.2007.06.014
更新日期：2007-10-01 00:00:00
abstract：RATIONALE AND OBJECTIVES:Assess whether staff training in advanced rapport skills and self-hypnotic relaxation techniques reduces noncompletion rates during magnetic resonance imaging (MRI). METHODS AND MATERIALS:All staff of a free-standing MRI facility was invited to 3 hours of preparatory communication lectures. Ha...
journal_title：Academic radiology
pub_type： 杂志文章
doi：10.1016/j.acra.2009.07.002
更新日期：2010-01-01 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
abstract：RATIONALE AND OBJECTIVES:The increasing use of computed tomography (CT) has been accompanied by rising concerns over potential radiation-related health risks, especially cancer, and a need to minimize such risks. MATERIALS AND METHODS:We conducted 2186 low-dose helical chest CT scans among 1235 nuclear weapons workers...
journal_title：Academic radiology
pub_type： 杂志文章
doi：10.1016/j.acra.2011.09.015
更新日期：2012-01-01 00:00:00
abstract：RATIONALE AND OBJECTIVES:The development of curriculum guidelines for radiology residency has been found to be favored by 80% of program directors (PDs) nationwide. I surveyed PDs to develop a consensus of opinion concerning minimum training requirements in the subspecialty rotations. METHODS:A survey developed by mem...
journal_title：Academic radiology
pub_type： 杂志文章
doi：10.1016/s1076-6332(96)80013-4
更新日期：1996-06-01 00:00:00
abstract：RATIONALE AND OBJECTIVES:To evaluate, in a group of candidates for liver donation, the role of unenhanced computed tomography (CT) and magnetic resonance (MR) as noninvasive means to measure hepatic steatosis (HS). MATERIALS AND METHODS:Sixty-one consecutive candidates underwent CT and MR evaluation for liver donation...
journal_title：Academic radiology
pub_type： 杂志文章
doi：10.1016/j.acra.2014.01.007
更新日期：2014-04-01 00:00:00
abstract：BACKGROUND:There is compelling evidence that neurochemical changes measured by proton magnetic resonance spectroscopy (1H-MRS) occur at different phases of Alzheimer's disease (AD). However, the extent to which these neurochemical changes are associated with validated AD biomarkers and/or apolipoprotein (APOE) ε4 is ye...
journal_title：Academic radiology
pub_type： 杂志文章,评审
doi：10.1016/j.acra.2020.06.006
更新日期：2020-07-07 00:00:00
abstract：RATIONALE AND OBJECTIVES:Describe new interactive digital teaching methods for medical student education in radiology and evaluate student responses. MATERIALS AND METHODS:Third- and fourth-year medical students on radiology clerkship were taught using either film-based "hot seat" format, digital "hot seat," or didact...
journal_title：Academic radiology
pub_type： 杂志文章
doi：10.1016/j.acra.2004.07.017
更新日期：2004-11-01 00:00:00
abstract：RATIONALE AND OBJECTIVES:Cellulitis is a common cause for emergency department (ED) presentation and subsequent hospital admission. Underlying fracture, osteomyelitis, or foreign body is often considered in the clinical evaluation of these patients. Accordingly, plain radiographs (XRs) of the affected extremity are oft...
journal_title：Academic radiology
pub_type： 杂志文章
doi：10.1016/j.acra.2015.08.002
更新日期：2015-11-01 00:00:00
abstract：RATIONALE AND OBJECTIVES:Introduction of combination of the segmentation tool SegoMeTex and the virtual endoscopy system VIVENDI to perform virtual endoscopic inspections of the human lung. This virtual bronchoscopy system enables visualization of the tracheobronchial tree down to seventh generation. Furthermore, the m...
journal_title：Academic radiology
pub_type： 杂志文章
doi：10.1016/j.acra.2004.01.012
更新日期：2004-05-01 00:00:00
abstract：RATIONALE AND OBJECTIVES:The aim of this study was to investigate the potential of magnetic resonance imaging (MRI) T1 mapping and T1 relaxation time in the rotating frame (T1rho) for assessment of renal fibrosis in a rat model of unilateral ureteral obstruction (UUO). MATERIALS AND METHODS:UUO was created in 36 rats....
journal_title：Academic radiology
pub_type： 杂志文章
doi：10.1016/j.acra.2018.03.023
更新日期：2019-01-01 00:00:00
abstract：RATIONALE AND OBJECTIVES:The aim of the present study was to examine the usefulness and record the complications of preoperative lipiodol marking using computed tomographic (CT) fluoroscopy for the intraoperative localization of 107 pulmonary nodules. METHODS:Lipiodol marking was performed under CT fluoroscopic guidan...
journal_title：Academic radiology
pub_type： 杂志文章
doi：10.1016/j.acra.2008.07.012
更新日期：2009-01-01 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:To better prepare radiology residents for providing care within the context of the larger health care system, this study evaluated the feasibility and impact of a curriculum to enhance radiology residents' understanding and ability to apply concepts from medical management and industrial and op...
journal_title：Academic radiology
pub_type： 杂志文章
doi：10.1016/j.acra.2012.09.025
更新日期：2013-03-01 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 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
abstract：OBJECTIVE:To investigate the correlation between dynamic susceptibility contrast magnetic resonance imaging (DSC-MRI) parameters and angiogenesis and to explore prospectively the feasibility of using DSC-MRI to differentiate malignant from benign soft tissue tumors (STTs) in limbs. METHODS:This prospective study inclu...
journal_title：Academic radiology
pub_type： 杂志文章
doi：10.1016/j.acra.2019.04.023
更新日期：2020-03-01 00:00:00
abstract：RATIONALE AND OBJECTIVES:This study aimed to determine whether uterine leiomyoma can be distinguished from uterine leiomyosarcoma on ultrasound (US), computed tomography (CT), and/or magnetic resonance imaging (MRI) without diffusion-weighted imaging. MATERIALS AND METHODS:Institutional review board approval was obtai...
journal_title：Academic radiology
pub_type： 杂志文章
doi：10.1016/j.acra.2016.06.004
更新日期：2016-10-01 00:00:00
abstract：RATIONALE AND OBJECTIVES:To characterize the lipidic profile of bone marrow in the calcaneus and femoral neck of healthy, osteopenic, and osteoporotic women, by using magnetic resonance spectroscopy (MRS) at 3T. The final goal was to identify specific metabolites with the potential ability to discriminate between healt...
journal_title：Academic radiology
pub_type： 杂志文章
doi：10.1016/j.acra.2015.11.009
更新日期：2016-03-01 00:00:00
abstract：RATIONALE AND OBJECTIVES:A survey was administered to fourth-year radiology residents after receiving their results from the first American Board of Radiology (ABR) Core examination in 2013. The purpose was to gather information regarding resources and study strategies to share with program directors and future residen...
journal_title：Academic radiology
pub_type： 杂志文章
doi：10.1016/j.acra.2014.07.026
更新日期：2015-01-01 00:00:00
abstract：RATIONALE AND OBJECTIVES:Contrast agents have been shown to produce vasodilatory responses in several vascular beds. To our knowledge, however, their effect on the bronchial vasculature has not been examined. Clinically, contrast-induced bronchial vasodilation could potentially exacerbate life-threatening pulmonary hem...
journal_title：Academic radiology
pub_type： 杂志文章
doi：10.1016/s1076-6332(05)80700-7
更新日期：1995-11-01 00:00:00
abstract：RATIONALE AND OBJECTIVES:To assess the usefulness of classifying degree of difficulty in abnormality detection and to determine the effect of knowing the true diagnosis when selecting subtle images for observer-performance studies. MATERIALS AND METHODS:A total of 529 posteroanterior chest images that had been used in...
journal_title：Academic radiology
pub_type： 杂志文章
doi：10.1016/s1076-6332(98)80127-x
更新日期：1998-02-01 00:00:00
abstract：RATIONALE AND OBJECTIVES:This study aimed to determine whether mammographic features assessed by radiologists and using computer algorithms are prognostic of occult invasive disease for patients showing ductal carcinoma in situ (DCIS) only in core biopsy. MATERIALS AND METHODS:In this retrospective study, we analyzed ...
journal_title：Academic radiology
pub_type： 杂志文章
doi：10.1016/j.acra.2017.03.013
更新日期：2017-09-01 00:00:00
abstract：RATIONALE AND OBJECTIVES:The aim of this study was to identify clinically useful tumor/normal brain apparent diffusion coefficient (ADC) ratios for distinguishing common pediatric cerebellar tumors. MATERIALS AND METHODS:Review of medical records revealed 79 patients with cerebellar tumors who underwent preoperative m...
journal_title：Academic radiology
pub_type： 杂志文章
doi：10.1016/j.acra.2012.03.004
更新日期：2012-07-01 00:00:00
abstract：RATIONALE AND OBJECTIVES:Diffusion-weighted imaging (DWI) is a noninvasive imaging technique that reflects the diffusion movement of water molecules through apparent diffusion coefficient (ADC) values. The role of DWI in predicting the histological response to neoadjuvant chemotherapy in osteosarcoma is being increasin...
journal_title：Academic radiology
pub_type： 杂志文章,评审
doi：10.1016/j.acra.2020.11.013
更新日期：2020-12-29 00:00:00
abstract：:The role of positron emission tomography (PET) during the past decade has evolved rapidly from that of a pure research tool to a methodology of enormous clinical potential. (18)F-fluorodeoxyglucose (FDG)-PET is currently the most widely used probe in the diagnosis, staging, assessment of tumor response to treatment, a...
journal_title：Academic radiology
pub_type： 杂志文章,评审
doi：10.1016/j.acra.2009.02.014
更新日期：2009-09-01 00:00:00
abstract：OBJECTIVE:This study was to investigate the CT quantification of COVID-19 pneumonia and its impacts on the assessment of disease severity and the prediction of clinical outcomes in the management of COVID-19 patients. MATERIALS METHODS:Ninety-nine COVID-19 patients who were confirmed by positive nucleic acid test (NAT...
journal_title：Academic radiology
pub_type： 杂志文章
doi：10.1016/j.acra.2020.09.004
更新日期：2020-12-01 00:00:00
abstract：RATIONALE AND OBJECTIVES:To determine computed tomography (CT) radiological features and texture features that are rewarding in differentiating nonhypervascular pancreatic neuroendocrine neoplasms (PNENs) from pancreatic ductal adenocarcinomas (PDACs). MATERIALS AND METHODS:We compared patients to pathologically prove...
journal_title：Academic radiology
pub_type： 杂志文章
doi：10.1016/j.acra.2019.06.012
更新日期：2020-03-01 00:00:00
