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Journal AJR Am J Roentgenol

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A Fond Farewell in Challenging Times.

Thomas H Berquist,

AJR Am J Roentgenol (AJR. American journal of roentgenology)
[2020, 214(6):1197-1198]

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Critical Review of the Literature on Chest CT and Coronavirus Disease (COVID-19): Data Adjustment.

Tetsuro Sekine,

AJR Am J Roentgenol (AJR. American journal of roentgenology)
[2020, :W1]

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A Comparison of Clinical and Chest CT Findings in Patients With Influenza A (H1N1) Virus Infection and Coronavirus Disease (COVID-19).

Zhilan Yin, Zhen Kang, Danhui Yang, Shuizi Ding, Hong Luo, Enhua Xiao,

OBJECTIVE. The purpose of this study was to compare clinical and chest CT findings in patients with influenza A (H1N1) pneumonia and coronavirus disease (COVID-19) pneumonia. MATERIALS AND METHODS. Thirty patients with diagnosed influenza A (H1N1) virus infection (group A) and 30 patients with diagnosed COVID-19 (group B) were retrospectively ... Read more >>

AJR Am J Roentgenol (AJR. American journal of roentgenology)
[2020, :1-7]

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Nonmass Enhancement Breast Lesions: Diagnostic Performance of Kinetic Assessment on Ultrafast and Standard Dynamic Contrast-Enhanced MRI in Comparison With Morphologic Evaluation.

Naoko Mori, Deepa Sheth, Hiroyuki Abe,

OBJECTIVE. The purpose of this article was to evaluate the diagnostic performance of the kinetic parameters of ultrafast and standard dynamic contrast-enhanced MRI (DCE-MRI) compared with morphologic evaluation in differentiating benign from malignant nonmass enhancement (NME) breast lesions. MATERIALS AND METHODS. A total of 77 consecutive patients with 77 NMEs ... Read more >>

AJR Am J Roentgenol (AJR. American journal of roentgenology)
[2020, :1-8]

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Percutaneous Minimally Invasive Thermal Ablation of Osseous Metastases: Evidence-Based Practice Guidelines.

Anderanik Tomasian, Jack W Jennings,

OBJECTIVE. The objective of this article is to describe evidence-based guidelines for percutaneous minimally invasive imaging-guided thermal ablation of bone metastases. CONCLUSION. Safe and effective minimally invasive thermal ablation can be performed to achieve pain palliation, local tumor control, or cure in selected subgroups of patients with osseous metastases. Thermal ... Read more >>

AJR Am J Roentgenol (AJR. American journal of roentgenology)
[2020, :1-9]

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Utilization Trends in Abdominal Imaging, 2004-2016.

Michael R Kramer, David C Levin, Vijay M Rao,

OBJECTIVE. The purpose of this study was to analyze recent trends in abdominal imaging utilization in the Medicare population. MATERIALS AND METHODS. Medicare Part B databases for 2004-2016 were reviewed, and all Current Procedural Terminology codes pertaining to noninvasive imaging of the abdomen and pelvis were identified. Codes were grouped ... Read more >>

AJR Am J Roentgenol (AJR. American journal of roentgenology)
[2020, :1-5]

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CT Features of Coronavirus Disease (COVID-19) in 30 Pediatric Patients.

Sharon Steinberger, Bin Lin, Adam Bernheim, Michael Chung, Yuantong Gao, Zongyu Xie, Tongtong Zhao, Junli Xia, Xueyan Mei, Brent P Little,

OBJECTIVE. The purpose of this study is to characterize the CT findings of 30 children from mainland China who had laboratory-confirmed coronavirus disease (COVID-19). Although recent American College of Radiology recommendations assert that CT should not be used as a screening or diagnostic tool for patients with suspected COVID-19, radiologists ... Read more >>

AJR Am J Roentgenol (AJR. American journal of roentgenology)
[2020, :1-9]

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New Arterial Phase Enhancing Nodules on MRI of Cirrhotic Liver: Risk of Progression to Hepatocellular Carcinoma and Implications for LI-RADS Classification.

Paul Smereka, Ankur M Doshi, Lisa P Lavelle, Krishna Shanbhogue,

OBJECTIVE. The purposes of this study were to evaluate the outcome of new arterial phase enhancing nodules at MRI of cirrhotic livers, including clinical and imaging factors that affect progression to hepatocellular carcinoma (HCC), and to assess the diagnostic performance of Liver Imaging Reporting and Data System version 2018 (LI-RADSv2018) ... Read more >>

AJR Am J Roentgenol (AJR. American journal of roentgenology)
[2020, :1-8]

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Reorganizing Cross-Sectional Interventional Procedures Practice During the Coronavirus Disease (COVID-19) Pandemic.

Ghaneh Fananapazir, Meghan G Lubner, Mishal Mendiratta-Lala, Benjamin Wildman-Tobriner, Samuel J Galgano, Ramit Lamba, J Louis Hinshaw, Olga R Brook,

OBJECTIVE. The purpose of this article is to present strategies and guidelines that can be implemented in the performance of cross-sectional interventional procedures during the coronavirus disease (COVID-19) pandemic. CONCLUSION. Radiologists who perform cross-sectional interventional procedures can take several steps to minimize the risks to patients and radiology personnel, including ... Read more >>

AJR Am J Roentgenol (AJR. American journal of roentgenology)
[2020, :1-5]

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Rapid Deployment of Home PACS Workstations to Enable Social Distancing in the Coronavirus Disease (COVID-19) Era.

Srini Tridandapani, Greg Holl, Cheri L Canon,

OBJECTIVE. Social distancing is considered an effective mitigation strategy for coronavirus disease (COVID-19), and remote interpretation of radiologic studies is one approach to social distancing within the radiology department. We describe the rapid deployment of home workstations to achieve social distancing in the radiology department at the University of Alabama ... Read more >>

AJR Am J Roentgenol (AJR. American journal of roentgenology)
[2020, :1-3]

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Understanding the Lymphatics: Review of the N Category in the Updated TNM Staging of Cancers of the Digestive System.

Christian K Pedersen, Aparna Srinivasa Babu,

OBJECTIVE. The N category has been significantly updated in the 8th edition of the American Joint Committee on Cancer's TNM classification. To ensure correct tumor staging, prognosis, and management, it is critical to be aware of these changes. This article reviews the updated N category, organ-specific regional lymph nodes, and ... Read more >>

AJR Am J Roentgenol (AJR. American journal of roentgenology)
[2020, :1-11]

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Chest CT and Coronavirus Disease (COVID-19): A More Complete Review.

Joseph B Fraiman,

AJR Am J Roentgenol (AJR. American journal of roentgenology)
[2020, :W1]

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MELD or Sodium MELD: A Comparison of the Ability of Two Scoring Systems to Predict Outcomes After Transjugular Intrahepatic Portosystemic Shunt Placement.

Shamar Young, Nassir Rostambeigi, Jafar Golzarian, Nicholas Lim,

OBJECTIVE. The purpose of this study was to compare the ability of the model for end-stage liver disease (MELD) and sodium MELD (MELD-Na) scoring systems to predict outcomes after transjugular intrahepatic portosystemic shunt (TIPS) placement. MATERIALS AND METHODS. Two hundred and nineteen consecutive patients who underwent TIPS placement were retrospectively ... Read more >>

AJR Am J Roentgenol (AJR. American journal of roentgenology)
[2020, :1-8]

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Grade 3 Pancreatic Neuroendocrine Tumors on MDCT: Establishing a Diagnostic Model and Comparing Survival Against Pancreatic Ductal Adenocarcinoma.

Hai-Yan Chen, Xue-Yan Zhang, Xue-Ying Deng, Ying-Lin Ge, Yong-Qiang Tang, Heng Cui, Bo Yang, Yao Pan, Dan Shi, Ri-Sheng Yu,

OBJECTIVE. The purpose of this study is to establish a diagnostic model for differentiating grade 3 (G3) pancreatic neuroendocrine tumors (PNETs) from pancreatic ductal adenocarcinomas (PDACs) and to analyze survival outcomes. MATERIALS AND METHODS. Twenty patients with G3 PNETs and 58 patients with PDACs confirmed by surgery or biopsy were ... Read more >>

AJR Am J Roentgenol (AJR. American journal of roentgenology)
[2020, :1-8]

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Delayed Isolation of Active Pulmonary Tuberculosis in Hospitalized Patients: A Pivotal Role of Radiologic Evaluation.

Bo Da Nam, Jung Hwa Hwang, Se Yoon Park, Tae Hyong Kim, Eunsun Oh, Eun Ji Lee,

OBJECTIVE. The purpose of this study was to determine factors related to delayed isolation of patients hospitalized with active pulmonary tuberculosis (TB). MATERIALS AND METHODS. A total of 130 immunocompetent hospitalized patients with active pulmonary TB who had positive sputum culture results from January 2015 to December 2017 were reviewed. ... Read more >>

AJR Am J Roentgenol (AJR. American journal of roentgenology)
[2020, :1-8]

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Semiautomatic Segmentation and Radiomics for Dual-Energy CT: A Pilot Study to Differentiate Benign and Malignant Hepatic Lesions.

Fatemeh Homayounieh, Ramandeep Singh, Chayanin Nitiwarangkul, Felix Lades, Bernhard Schmidt, Martin Sedlmair, Sanjay Saini, Mannudeep K Kalra,

OBJECTIVE. This study assessed a machine learning-based dual-energy CT (DECT) tumor analysis prototype for semiautomatic segmentation and radiomic analysis of benign and malignant liver lesions seen on contrast-enhanced DECT. MATERIALS AND METHODS. This institutional review board-approved study included 103 adult patients (mean age, 65 ± 15 [SD] years; 53 men, ... Read more >>

AJR Am J Roentgenol (AJR. American journal of roentgenology)
[2020, :1-8]

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Percutaneous Intraductal Microwave Ablation of Malignant Biliary Strictures: Initial Experience.

Sadık Ahmet Uyanık, Umut Öğüşlü, Birnur Yılmaz, Halime Çevik, Eray Atlı, Burçak Gümüş,

OBJECTIVE. Metallic stenting of malignant biliary strictures is the preferred method of palliation, because most patients present when the condition is inoperable. Most metallic stents, however, are occluded 6-8 months after deployment. Intraductal radiofrequency ablation has been used in previous studies to improve stent patency. The purpose of this study ... Read more >>

AJR Am J Roentgenol (AJR. American journal of roentgenology)
[2020, :1-7]

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Diagnostic Tools for Coronavirus Disease (COVID-19): Comparing CT and RT-PCR Viral Nucleic Acid Testing.

Joseph V Waller, Parveer Kaur, Amy Tucker, Keldon K Lin, Michael J Diaz, Travis S Henry, Michael Hope,

OBJECTIVE. Multiple studies suggest CT should be a primary diagnostic tool for coronavirus disease (COVID-19) because they reported sensitivities with CT far superior to that of reverse transcriptase polymerase chain reaction (RT-PCR) testing. This review aimed to assess these reports and found chest CT to have a clinical utility that ... Read more >>

AJR Am J Roentgenol (AJR. American journal of roentgenology)
[2020, :1-5]

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Trends in Publicly Reported Quality Measures of Hospital Imaging Efficiency, 2011-2018.

Melissa Davis, Colleen McKiernan, Sonam Lama, Craig Parzynski, Charlie Bruetman, Arjun Venkatesh,

OBJECTIVE. In 2011, the Centers for Medicare & Medicaid Services (CMS) initiated public reporting of outpatient imaging efficiency measures to reduce potentially inappropriate imaging and unnecessary exposure to ionizing radiation performed in hospital outpatient departments. Three CMS quality measures were designed to reduce duplicative CT in the Medicare population: OP-10, ... Read more >>

AJR Am J Roentgenol (AJR. American journal of roentgenology)
[2020, :1-6]

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Breast Tissue Expander With Radiofrequency Identification Port: Assessment of MRI Issues.

Mungunchimeg Bayasgalan, Alexandre Mendonça Munhoz, Frank G Shellock,

OBJECTIVE. Breast tissue expanders with magnetic ports are MRI unsafe, preventing patients from benefiting from the diagnostic capabilities of MRI. A tissue expander was recently developed with a radiofrequency identification (RFID) port used for needle location and expansion that may be acceptable for a patient undergoing MRI. The purpose of ... Read more >>

AJR Am J Roentgenol (AJR. American journal of roentgenology)
[2020, :1-6]

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Ultrasound and CT in the Diagnosis of Appendicitis: Accuracy With Consideration of Indeterminate Examinations According to STARD Guidelines.

Candice Crocker, Magdi Akl, Mohamed Abdolell, Mahsa Kamali, Andreu F Costa,

OBJECTIVE. The objective of our study was to determine the accuracy of ultrasound (US) and CT in diagnosing appendicitis at our institution while taking into account the number of indeterminate examinations in accordance with the Standards for Reporting Diagnostic Accuracy (STARD) guidelines. MATERIALS AND METHODS. We retrospectively evaluated 790 patients ... Read more >>

AJR Am J Roentgenol (AJR. American journal of roentgenology)
[2020, :1-6]

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Diagnostic Accuracy of Lateral Neck Radiography for Esophageal Foreign Bodies in Adults.

Cheng-Ming Luo, Yi-Chan Lee,

OBJECTIVE. The objective of our study was to evaluate the accuracy of signs on lateral neck radiography for the assessment of patients with suspected esophageal foreign bodies (FBs). MATERIALS AND METHODS. This retrospective study was conducted of 235 adult patients between January 2012 and December 2017. Group 1 was composed ... Read more >>

AJR Am J Roentgenol (AJR. American journal of roentgenology)
[2020, :1-7]

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Desmoplastic Fibroblastoma: An Uncommon Tumor With a Relatively Characteristic MRI Appearance.

Maxine E Kresse, Mark J Kransdorf, Michael G Fox, Jonathan A Flug, Jeremiah R Long, Mark D Murphey,

OBJECTIVE. We undertook this study to determine the radiologic features of desmo-plastic fibroblastoma. MATERIALS AND METHODS. We reviewed available radiologic images for 29 pathologically confirmed desmoplastic fibroblastomas, including images from MRI, radiography, ultrasound (US), and CT. RESULTS. The patient population included 14 women and 15 men (mean age, 60 years; ... Read more >>

AJR Am J Roentgenol (AJR. American journal of roentgenology)
[2020, :1-6]

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Development of Quality-Controlled Low-Dose Protocols for Radiography in the Neonatal ICU Using a New Mobile Digital Radiography System.

Gayoung Choi, Jung-Eun Cheon, Seunghyun Lee, Young Hun Choi, Seung Han Shin, Yeon Jin Cho, Sun Won Park,

OBJECTIVE. The aim of this study was to develop a low-dose radiography protocol for the neonatal ICU (NICU) using a new mobile digital radiography system with advanced denoising image processing and to evaluate the noninferiority of that protocol. SUBJECTS AND METHODS. In this prospective randomized study, 40 neonates in the ... Read more >>

AJR Am J Roentgenol (AJR. American journal of roentgenology)
[2020, :1-6]

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The Role of Breast MRI in Detecting Asymptomatic Recurrence After Therapeutic Mastectomy.

Molly C Chapman, Jessica H Hayward, Genevieve A Woodard, Bonnie N Joe, Amie Y Lee,

OBJECTIVE. MRI is not routinely used to screen for cancer recurrence after therapeutic mastectomy; however, data on this topic are sparse. We performed this study to determine the utility of breast MRI in detecting asymptomatic locoregional recurrence after therapeutic mastectomy. MATERIALS AND METHODS. A retrospective record review identified all breast ... Read more >>

AJR Am J Roentgenol (AJR. American journal of roentgenology)
[2020, :1-8]

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