当前位置： SCI文献检索 > ACADEMIC RADIOLOGY期刊下所有文献 > A segmentation-based method for metal artifact reduction.

A segmentation-based method for metal artifact reduction.

Abstract：

RATIONALE AND OBJECTIVES:We propose a novel segmentation-based interpolation method to reduce the metal artifacts caused by surgical aneurysm clips. MATERIALS AND METHODS:Our method consists of five steps: coarse image reconstruction, metallic object segmentation, forward-projection, projection interpolation, and final image reconstruction. The major innovations are 2-fold. First, a state-of-the-art mean-shift technique in the computer vision field is used to improve the accuracy of the metallic object segmentation. Second, a feedback strategy is developed in the interpolation step to adjust the interpolated value based on the prior knowledge that the interpolated values should not be larger than the original ones. Physical phantom and real patient datasets are studied to evaluate the efficacy of our method. RESULTS:Compared to the state-of-the-art segmentation-based method designed previously, our method reduces the metal artifacts by 20-40% in terms of the standard deviation and provides more information for the assessment of soft tissues and osseous structures surrounding the surgical clips. CONCLUSION:Mean shift technique and feedback strategy can help to improve the image quality in terms of reducing metal artifacts.

journal_name

Acad Radiol

journal_title

Academic radiology

authors

Yu H,Zeng K,Bharkhada DK,Wang G,Madsen MT,Saba O,Policeni B,Howard MA,Smoker WR

doi

10.1016/j.acra.2006.12.015

subject

Has Abstract

pub_date

2007-04-01 00:00:00

pages

495-504

issue

4

eissn

1076-6332

issn

1878-4046

pii

S1076-6332(07)00002-5

journal_volume

14

pub_type

杂志文章

相关文献

ACADEMIC RADIOLOGY文献大全
  • Introduction of QUIP (quality information program) as a semi-automated quality assessment endeavor allowing retrospective review of errors in cross-sectional abdominal imaging.

    abstract：RATIONALE AND OBJECTIVES:The aims of this study were to review the role of a quality information program (QUIP) as a semiautomated educational feedback mechanism and to review common errors in cross-sectional abdominal and pelvic studies as an initiative for continuing medical education and improving patient care. MAT...

    journal_title：Academic radiology

    pub_type： 杂志文章

    doi：10.1016/j.acra.2011.06.012

    authors： Kielar AZ,McInnes M,Quan M,O'Sullivan J

    更新日期：2011-11-01 00:00:00

  • Diagnostic Accuracy of Ultrasound, Contrast-enhanced CT, and Conventional MRI for Differentiating Leiomyoma From Leiomyosarcoma.

    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

    authors： Gaetke-Udager K,McLean K,Sciallis AP,Alves T,Maturen KE,Mervak BM,Moore AG,Wasnik AP,Erba J,Davenport MS

    更新日期：2016-10-01 00:00:00

  • View box luminance measurements and their effect on reader performance.

    abstract：RATIONALE AND OBJECTIVES:The purpose of this study was to investigate the importance of view box luminance and viewing conditions on low-contrast detection by readers. MATERIALS AND METHODS:Radiographs of a mammographic contrast-detail phantom were examined on 632 view box panels. The luminance of these panels was obt...

    journal_title：Academic radiology

    pub_type： 杂志文章

    doi：10.1016/S1076-6332(99)80429-2

    authors： Rill LN,Huda W,Gkanatsios NA

    更新日期：1999-09-01 00:00:00

  • The effects of magnetically labeled rat spleen-originated endothelial progenitor cells on growth of glioma in vivo an experimental study.

    abstract：RATIONALE AND OBJECTIVES:The aim of this study was to investigate the effects of exogenous endothelial progenitor cells (EPCs) on the growth and invasiveness of glioma in vivo to provide an experimental basis for the value and safety of using magnetically labeled EPCs as target vectors to detect early infiltration of g...

    journal_title：Academic radiology

    pub_type： 杂志文章

    doi：10.1016/j.acra.2011.02.017

    authors： Fang J,Wang S,Chen J,Zhang Y,Zhang B,Liang H,Zhang W

    更新日期：2011-07-01 00:00:00

  • Radiation safety knowledge and perceptions among residents: a potential improvement opportunity for graduate medical education in the United States.

    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

    authors： Sadigh G,Khan R,Kassin MT,Applegate KE

    更新日期：2014-07-01 00:00:00

  • Evaluation of clinical outcomes of antiangiogenic-targeted therapy in patients with pulmonary metastatic renal cell carcinoma using non-contrast-enhanced computed tomography.

    abstract：RATIONALE AND OBJECTIVES:The objective of this study was to assess whether changes to radiographic parameters before and after treatment with antiangiogenic drugs would improve performance in predicting tumor response with non-contrast-enhanced computed tomography (NCECT) compared to Response Evaluation Criteria in Sol...

    journal_title：Academic radiology

    pub_type： 杂志文章

    doi：10.1016/j.acra.2014.06.007

    authors： Wu GY,Suo ST,Kong W,Jin D,Zhang J,Xu JR

    更新日期：2014-11-01 00:00:00

  • Role of intracellular calcium stores in contrast medium-induced renal vasoconstriction.

    abstract：RATIONALE AND OBJECTIVES:Renovascular smooth muscle contractility, an important factor in contrast media-induced nephrotoxicity, depends on intracellular Ca2+ concentration, which is composed of extracellular Ca2+ influx and intracellular Ca2+ release. These factors were investigated in contrast media-induced renal vas...

    journal_title：Academic radiology

    pub_type： 杂志文章

    doi：10.1016/s1076-6332(96)80298-4

    authors： Drescher P,Rauch D,Madsen PO

    更新日期：1996-11-01 00:00:00

  • Should Radiologists Comment on Incidental Findings of Vascular Calcifications Found on Abdominal/Pelvic CT in Patients Less Than 50 Years of Age?

    abstract：RATIONALE AND OBJECTIVES:To evaluate if incidental abdominopelvic calcified atherosclerosis (ACA) in patients under 50 years of age correlates with cardiovascular disease (CVD) risk factors. Most studies evaluating calcific atherosclerosis and associated increased risk of CVD have concentrated on middle age and older p...

    journal_title：Academic radiology

    pub_type： 杂志文章

    doi：10.1016/j.acra.2019.10.013

    authors： Bernheim A,Grunhut J,Tang A,Gofur E,Thai J,Mehta V,Stern J,Jadidi N,Hodes A,Goldwasser B,Arneja A,Krausz D,Coords M,Peti S,Chacko J,Sarkany D

    更新日期：2020-08-01 00:00:00

  • Establishing a gold standard for test sets: variation in interpretive agreement of expert mammographers.

    abstract：RATIONALE AND OBJECTIVES:Test sets for assessing and improving radiologic image interpretation have been used for decades and typically evaluate performance relative to gold standard interpretations by experts. To assess test sets for screening mammography, a gold standard for whether a woman should be recalled for add...

    journal_title：Academic radiology

    pub_type： 杂志文章

    doi：10.1016/j.acra.2013.01.012

    authors： Onega T,Anderson ML,Miglioretti DL,Buist DS,Geller B,Bogart A,Smith RA,Sickles EA,Monsees B,Bassett L,Carney PA,Kerlikowske K,Yankaskas BC

    更新日期：2013-06-01 00:00:00

  • MRI Texture Analysis for Differentiating Nonfunctional Pancreatic Neuroendocrine Neoplasms From Solid Pseudopapillary Neoplasms of the Pancreas.

    abstract：RATIONALE AND OBJECTIVES:To evaluate the value of texture analysis on preoperative magnetic resonance imaging (MRI) for identifying nonfunctional pancreatic neuroendocrine neoplasms (NF-PNENs) and solid pseudopapillary neoplasms (SPNs). MATERIALS AND METHODS:This retrospective study included 119 patients who underwent...

    journal_title：Academic radiology

    pub_type： 杂志文章

    doi：10.1016/j.acra.2019.07.012

    authors： Li X,Zhu H,Qian X,Chen N,Lin X

    更新日期：2020-06-01 00:00:00

  • The "Look Ahead" Technique: A Novel Way to Engage Medical Students in the Radiology Reading Room.

    abstract：RATIONALE AND OBJECTIVES:Engaging medical students during a radiology course can be challenging. We sought a way to actively engage students with live cases, allow them to interact with the picture archiving and communication system workstation, and experience what it is like to be a radiologist. MATERIALS AND METHODS...

    journal_title：Academic radiology

    pub_type： 杂志文章

    doi：10.1016/j.acra.2019.12.021

    authors： Huang J,Bingham B,Jordanov M

    更新日期：2021-02-01 00:00:00

  • Acoustic noise transfer function in clinical MRI a multicenter analysis.

    abstract：RATIONALE AND OBJECTIVES:Acoustic noise both in terms of its magnitude and frequency during magnetic resonance imaging (MRI) scan is influenced by imaging parameters and pulse sequences. It varies because of many different factors such as structure, materials, and magnetic field strength. The purpose of our study is to...

    journal_title：Academic radiology

    pub_type： 杂志文章,多中心研究

    doi：10.1016/j.acra.2010.09.009

    authors： Hamaguchi T,Miyati T,Ohno N,Hirano M,Hayashi N,Gabata T,Matsui O,Matsushita T,Yamamoto T,Fujiwara Y,Kimura H,Takeda H,Takehara Y

    更新日期：2011-01-01 00:00:00

  • Academic Remediation: Why Early Identification and Intervention Matters.

    abstract：:At our institution, we have developed a remediation team of strong, focused experts who help us with struggling learners in making the diagnosis and then coaching on their milestone deficits. It is key for all program directors to recognize struggling residents because early recognition and intervention gives the resi...

    journal_title：Academic radiology

    pub_type： 杂志文章

    doi：10.1016/j.acra.2016.12.022

    authors： Rumack CM,Guerrasio J,Christensen A,Aagaard EM

    更新日期：2017-06-01 00:00:00

  • Quality of communication: different patterns of reporting the location of the tip of a nasogastric tube.

    abstract：PURPOSE:This investigation is part of a prospective National Institutes of Health-funded study evaluating three different methods for estimating the optimal length for placement of a new nasogastric (NG) tube. Abdomen radiographs were required to determine the location of the tube tip. Our objective was to analyze diff...

    journal_title：Academic radiology

    pub_type： 杂志文章

    doi：10.1016/j.acra.2012.02.007

    authors： Cohen MD,Ellett M

    更新日期：2012-06-01 00:00:00

  • Overdiagnosis of breast cancer at screening is clinically insignificant.

    abstract：:Long-term follow-up of randomized trials provide the most accurate estimates of overdiagnosis. Estimates from follow-up of service screening studies are almost as accurate if there is sufficient adjustment for lead time and risk status. When properly analyzed data from both of these types of trials indicate that the r...

    journal_title：Academic radiology

    pub_type： 杂志文章,meta分析,评审

    doi：10.1016/j.acra.2015.01.020

    authors： Feig SA

    更新日期：2015-08-01 00:00:00

  • Occupational necessity and educational invention: resident teaching of radiologic technologists.

    abstract：RATIONALE AND OBJECTIVE:Radiology faces a severe and growing shortage of radiologic technologists. One way of redressing this problem is to improve the quality of education provided to radiologic technology students. Yet growing clinical demands increasingly erode faculty time for teaching. This study examined whether ...

    journal_title：Academic radiology

    pub_type： 杂志文章

    doi：10.1016/s1076-6332(03)80029-6

    authors： Gunderman RB,Fraley R,Jackson V,Robinson S,Williamson K

    更新日期：2003-04-01 00:00:00

  • MDCT for computerized volumetry of pneumothoraces in pediatric patients.

    abstract：RATIONALE AND OBJECTIVES:Our purpose in this study was to develop an automated computer-aided volumetry (CAV) scheme for quantifying pneumothorax in multidetector computed tomography (MDCT) images for pediatric patients and to investigate the imaging parameters that may affect its accuracy. MATERIALS AND METHODS:Fifty...

    journal_title：Academic radiology

    pub_type： 杂志文章

    doi：10.1016/j.acra.2010.11.008

    authors： Cai W,Lee EY,Vij A,Mahmood SA,Yoshida H

    更新日期：2011-03-01 00:00:00

  • Grand rounds and a visiting professorship program in a department of radiology: how we do it.

    abstract：:We discuss the benefits of maintaining an active, rigorous, and highly structured grand rounds (GR) program in an academic radiology department. These benefits include education for faculty (continuing medical education), fellows, and residents and a venue for building collaboration and camaraderie within the departme...

    journal_title：Academic radiology

    pub_type： 杂志文章

    doi：10.1016/j.acra.2012.08.003

    authors： Tridandapani S,Mullins ME,Meltzer CC

    更新日期：2012-11-01 00:00:00

  • Simulation of mammographic lesions.

    abstract：RATIONALE AND OBJECTIVES:This study presents a method for generating breast masses and microcalcifications in mammography via simulation. This simulation method allows for the creation of large image datasets with particular lesions, which may serve as a useful tool for perception studies measuring imaging system perfo...

    journal_title：Academic radiology

    pub_type： 杂志文章

    doi：10.1016/j.acra.2006.03.015

    authors： Saunders R,Samei E,Baker J,Delong D

    更新日期：2006-07-01 00:00:00

  • Optimal contrast agents for vascular imaging on computed tomography: iodixanol versus iohexol.

    abstract：RATIONALE AND OBJECTIVES:Dimeric nonionic iodinated contrast has a lower osmolality than monomeric nonionic iodinated contrast but is available at lower iodine concentrations. Less dilution of intravascular fluid by influx from the extravascular space is proposed to occur with decreasing osmolality. The purpose of this...

    journal_title：Academic radiology

    pub_type： 杂志文章

    doi：10.1016/j.acra.2005.01.015

    authors： Pannu HK,Thompson RE,Phelps J,Magee CA,Fishman EK

    更新日期：2005-05-01 00:00:00

  • Providing Feedback: Practical Skills and Strategies.

    abstract：:Feedback is an essential component of education. It is designed to influence, reinforce, and change behaviors, concepts, and attitudes in learners. Although providing constructive feedback can be challenging, it is a learnable skill. The negative consequences of destructive feedback or lack of feedback all together ar...

    journal_title：Academic radiology

    pub_type： 杂志文章

    doi：10.1016/j.acra.2016.11.023

    authors： Sarkany D,Deitte L

    更新日期：2017-06-01 00:00:00

  • Microvascular versus macrovascular cerebral vasomotor reactivity in patients with severe internal carotid artery stenosis or occlusion.

    abstract：RATIONALE AND OBJECTIVES:In patients with severe internal carotid artery steno-occlusive lesions (ISOL), impaired cerebrovascular reactivity (CVR) is predictive of future ischemic stroke (IS) or transient ischemic attack (TIA). Therefore, the evaluation of CVR in ISOL patients may be a means to evaluate the risk for IS...

    journal_title：Academic radiology

    pub_type： 杂志文章

    doi：10.1016/j.acra.2013.10.010

    authors： Zirak P,Delgado-Mederos R,Dinia L,Martí-Fàbregas J,Durduran T

    更新日期：2014-02-01 00:00:00

  • Computerized texture analysis of mammographic parenchymal patterns of digitized mammograms.

    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

    authors： Li H,Giger ML,Olopade OI,Margolis A,Lan L,Chinander MR

    更新日期：2005-07-01 00:00:00

  • In vivo evaluation of a fluorine-acryl-stylene-urethane-silicone antithrombogenic coating material copolymer for intravascular stents.

    abstract：RATIONALE AND OBJECTIVES:We evaluated the effectiveness of a fluorine-acryl-styrene-urethane-silicone (FASUS) copolymer as an antithrombogenic coating material for intravascular stents in dogs. METHODS:FASUS copolymer-coated stents were placed in the right iliac veins, and uncoated 304 stainless steel stents were plac...

    journal_title：Academic radiology

    pub_type： 杂志文章

    doi：10.1016/s1076-6332(96)80223-6

    authors： Matsuhashi T,Miyachi H,Ishibashi T,Sakamoto K,Yamadera A

    更新日期：1996-07-01 00:00:00

  • Iodixanol and ioxaglate in adult aortography and peripheral arteriography: a phase III clinical trial.

    abstract：RATIONALE AND OBJECTIVES:This study compared the safety and efficacy of iodixanol with those of ioxaglate in adult patients undergoing aortography or peripheral arteriography. METHODS:Forty-six patients were enrolled in this controlled, randomized, double-blind, two-center study. The patients were monitored for advers...

    journal_title：Academic radiology

    pub_type： 临床试验,杂志文章,多中心研究,随机对照试验

    doi：10.1016/s1076-6332(05)80368-x

    authors： Rosenblum JD,Siegel EL,Leef J,Eckard DA,Lu CT

    更新日期：1996-09-01 00:00:00

  • Role of US-guided fine-needle aspiration with on-site cytopathologic evaluation in management of nonpalpable breast lesions.

    abstract：RATIONALE AND OBJECTIVES:The purpose of this study was to evaluate the accuracy of ultrasound (US)-guided fine-needle aspiration (FNA), with radiographic follow-up or surgical excision, in conjunction with on-site cytopathologic support in the management of nonpalpable breast lesions. MATERIALS AND METHODS:The finding...

    journal_title：Academic radiology

    pub_type： 杂志文章

    doi：10.1016/S1076-6332(03)80501-9

    authors： Buchbinder SS,Gurell DS,Tarlow MM,Salvatore M,Suhrland MJ,Kader K

    更新日期：2001-04-01 00:00:00

  • 3D shape analysis of the supraspinatus muscle: a clinical study of the relationship between shape and pathology.

    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

    authors： Ward AD,Hamarneh G,Ashry R,Schweitzer ME

    更新日期：2007-10-01 00:00:00

  • Breast DCE-MRI: influence of postcontrast timing on automated lesion kinetics assessments and discrimination of benign and malignant lesions.

    abstract：RATIONALE AND OBJECTIVES:Breast dynamic contrast-enhanced magnetic resonance imaging (DCE-MRI) scanning protocols vary widely. The purpose of this study was to determine the effects of postcontrast timing on delayed-phase lesion kinetics assessment and ability to discriminate malignant from benign lesions. MATERIALS A...

    journal_title：Academic radiology

    pub_type： 杂志文章

    doi：10.1016/j.acra.2014.04.013

    authors： Partridge SC,Stone KM,Strigel RM,DeMartini WB,Peacock S,Lehman CD

    更新日期：2014-09-01 00:00:00

  • Teaching Radiology Physics Interactively with Scientific Notebook Software.

    abstract：RATIONALE AND OBJECTIVES:The goal of this study is to demonstrate how the teaching of radiology physics can be enhanced with the use of interactive scientific notebook software. METHODS:We used the scientific notebook software known as Project Jupyter, which is free, open-source, and available for the Macintosh, Windo...

    journal_title：Academic radiology

    pub_type： 杂志文章

    doi：10.1016/j.acra.2017.11.024

    authors： Richardson ML,Amini B

    更新日期：2018-06-01 00:00:00

  • Extent of myocardial collateralization: determination with three-dimensional elastic-subtraction spiral CT.

    abstract：RATIONALE AND OBJECTIVES:This study was undertaken to develop a standard that can be used to assess new high-resolution collateral zone imaging methods. MATERIALS AND METHODS:The authors performed ex vivo helical CT in seven pig hearts after microsphere studies of blood flow and coronary angiography. They compared the...

    journal_title：Academic radiology

    pub_type： 杂志文章

    doi：10.1016/s1076-6332(97)80139-0

    authors： Pearlman JD,Laham RJ,Simons M,Gladstone S,Raptopoulos V

    更新日期：1997-10-01 00:00:00