journal
MENU ▼
Read by QxMD icon Read
search

AJR. American Journal of Roentgenology

journal
https://www.readbyqxmd.com/read/29231760/the-impact-of-dose-reduction-in-quantitative-kinematic-ct-of-ankle-joints-using-a-full-model-based-iterative-reconstruction-algorithm-a-cadaveric-study
#1
Charles Lombard, Alban Gervaise, Nicolas Villani, Mathias Louis, Ariane Raymond, Alain Blum, Pedro Augusto Gondim Teixeira
OBJECTIVE: The objective of our study was to evaluate the quality and reproducibility of semiautomatic measurements of the ankle in low-dose kinematic CT studies using a full model-based iterative reconstruction (MBIR). MATERIALS AND METHODS: Kinematic CT was performed in five cadaveric ankles at three acquisition dose levels: standard dose (1020 mGy × cm), low dose (10% of the standard dose), and ultra-low-dose (1.5% of the standard dose). All images were reconstructed using a full MBIR algorithm...
December 12, 2017: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/29231759/screening-for-lung-cancer-incidental-pulmonary-parenchymal-findings
#2
Jonathan H Chung, J Caleb Richards, Tilman L Koelsch, Heber MacMahon, David A Lynch
OBJECTIVE: Incidental pulmonary findings are commonly detected at lung cancer screening chest CT. Though most of these findings are clinically insignificant, it is difficult to prospectively determine which are potentially important to clinical care. The purpose of this review is to discuss the incidental pulmonary findings commonly detected at lung cancer screening chest CT. CONCLUSION: Incidental pulmonary findings most commonly fall into one of three categories: interstitial lung disease, emphysema, and airways disease (both small and large airways)...
December 12, 2017: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/29231758/dose-reduction-with-dedicated-ct-metal-artifact-reduction-algorithm-ct-phantom-study
#3
Naveen Subhas, Camilla P Pursyko, Joshua M Polster, Nancy A Obuchowski, Andrew N Primak, Frank F Dong, Brian R Herts
OBJECTIVE: The objective of this study was to compare reader accuracy detecting lesions near hardware in a CT phantom model at different radiation exposures using an advanced metal artifact reduction (MAR) algorithm and standard filtered back projection (FBP) techniques and to determine if radiation exposure could be decreased using MAR without compromising lesion detectability. MATERIALS AND METHODS: A CT phantom manufactured with spherical lesions of various sizes (10-20 mm) and attenuations (20-50 HU) embedded around cobalt-chromium spheres attached to titanium rods, simulating an arthroplasty, was scanned on a single CT scanner (FLASH, Siemens Healthcare) at 140 kVp and 0...
December 12, 2017: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/29231757/structured-protocol-for-benign-biliary-anastomotic-strictures-impact-on-long-term-clinical-effectiveness
#4
Will S Lindquester, J David Prologo, Elizabeth A Krupinski, Gail L Peters
OBJECTIVE: The purpose of this study is to compare long-term clinical effectiveness before and after implementation of a structured protocol for percutaneous drainage of benign anastomotic biliary strictures. MATERIALS AND METHODS: Three hundred five adult patients undergoing percutaneous biliary drainage for biliary anastomotic strictures between 1994 and 2015 were identified using Current Procedural Terminology billing codes, with 234 undergoing intervention before implementation of a structured protocol and 71 undergoing intervention after implementation of the protocol...
December 12, 2017: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/29220213/clinical-application-of-biparametric-mri-texture-analysis-for-detection-and-evaluation-of-high-grade-prostate-cancer-in-zone-specific-regions
#5
Xiang-Ke Niu, Zhi-Fan Chen, Lin Chen, Jun Li, Tao Peng, Xin Li
OBJECTIVE: The purpose of this study was to investigate the performance of biparametric MRI texture analysis (TA) in detecting and evaluating high-grade prostate cancer in zone-specific regions. MATERIALS AND METHODS: A retrospective study included 184 consecutively registered biopsy-naive patients in whom prostate cancer was suspected who were undergoing multiparametric prostate MRI. MR images were scored and evaluated by two readers using the Prostate Imaging Reporting and Data System version 2 (PI-RADSv2) and biparametric MRI TA in separate sessions...
December 8, 2017: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/29220212/comparison-of-xenon-enhanced-area-detector-ct-and-krypton-ventilation-spect-ct-for-assessment-of-pulmonary-functional-loss-and-disease-severity-in-smokers
#6
Yoshiharu Ohno, Yasuko Fujisawa, Daisuke Takenaka, Shigeo Kaminaga, Shinichiro Seki, Naoki Sugihara, Takeshi Yoshikawa
OBJECTIVE: The objective of this study was to compare the capability of xenon-enhanced area-detector CT (ADCT) performed with a subtraction technique and coregistered 81mKr-ventilation SPECT/CT for the assessment of pulmonary functional loss and disease severity in smokers. SUBJECTS AND METHODS: Forty-six consecutive smokers (32 men and 14 women; mean age, 67.0 years) underwent prospective unenhanced and xenon-enhanced ADCT, 81mKr-ventilation SPECT/CT, and pulmonary function tests...
December 8, 2017: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/29220211/percutaneous-image-guided-cryoneurolysis
#7
Ross W Bittman, Gail L Peters, Janice M Newsome, Eric B Friedberg, Jason W Mitchell, Jacquelyn M Knight, J David Prologo
OBJECTIVE: The aim of this article is to review the available evidence regarding image-guided percutaneous cryoneurolysis, with a focus on indications, technique, efficacy, and potential complications. CONCLUSION: Percutaneous image-guided cryoneurolysis is safe and effective for the management of several well-described syndromes involving neuropathic pain. Additional rigorous prospective study is warranted to further define the efficacy and specific role of these interventions...
December 8, 2017: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/29220210/contrast-enhanced-ultrasound-of-the-liver-optimizing-technique-and-clinical-applications
#8
Emily H T Pang, Andy Chan, Stephen G Ho, Alison C Harris
OBJECTIVE: The purpose of this article is to review the general principles, technique, and clinical applications of contrast-enhanced ultrasound of the liver. CONCLUSION: Proper technique and optimization of contrast-enhanced ultrasound require a balance between maintaining the integrity of the microbubble contrast agent and preserving the ultrasound signal. Established and emerging applications in the liver include diagnosis of focal lesions, aiding ultrasound-guided intervention, monitoring of therapy, and aiding surgical management...
December 8, 2017: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/29220209/making-time-for-patients-positive-impact-of-direct-patient-reporting
#9
Sheila K Mohan, Patricia A Hudgins, Mihir R Patel, Jim Stapleton, Richard Duszak, Ashley H Aiken
OBJECTIVE: Using a novel patient-centric approach, we assessed the impact of direct patient radiology reporting on the patient experience and patient perception of radiologists in a high-volume head and neck clinic. MATERIALS AND METHODS: A single head and neck surgeon at a large academic center identified prospective outpatients who met the following inclusion criteria: having received treatment for head and neck cancer and having recently undergone surveillance imaging using the Neck Imaging Reporting and Data System template at our institution...
December 8, 2017: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/29220208/changing-utilization-of-noninvasive-diagnostic-imaging-over-2-decades-an-examination-family-focused-analysis-of-medicare-claims-using-the-neiman-imaging-types-of-service-categorization-system
#10
David A Rosman, Richard Duszak, Wenyi Wang, Danny R Hughes, Andrew B Rosenkrantz
OBJECTIVE: The objective of our study was to use a new modality and body region categorization system to assess changing utilization of noninvasive diagnostic imaging in the Medicare fee-for-service population over a recent 20-year period (1994-2013). MATERIALS AND METHODS: All Medicare Part B Physician Fee Schedule services billed between 1994 and 2013 were identified using Physician/Supplier Procedure Summary master files. Billed codes for diagnostic imaging were classified using the Neiman Imaging Types of Service (NITOS) coding system by both modality and body region...
December 8, 2017: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/29166151/biomarkers-and-imaging-of-breast-cancer
#11
Olena Weaver, Jessica W T Leung
OBJECTIVE: The goals of this review are to provide background information on the definitions and applications of the general term "biomarker" and to highlight the specific roles of breast imaging biomarkers in research and clinical breast cancer care. A search was conducted of the main electronic biomedical databases (PubMed, Cochrane, Embase, MEDLINE [Ovid], Scopus, and Web of Science). The search was focused on review literature in general radiology and biomedical sciences and on reviews and primary research articles on biomarkers in breast imaging over the 15 years ending in June 2017...
November 22, 2017: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/29166150/exploring-the-negative-likelihood-ratio-and-how-it-can-be-used-to-minimize-false-positives-in-breast-imaging
#12
Wei T Yang, Jay R Parikh, A Thomas Stavros, Pam Otto, Greg Maislin
OBJECTIVE: This article describes the definition and proposed utilization of negative likelihood ratios (NLRs) as statistical parameters in breast imaging. Examples with calculations are provided using BI-RADS category 4 subcategories. CONCLUSION: By auditing individual performance early and often against American College of Radiology benchmark positive predictive value ranges for the BI-RADS category 4 subcategories, and by fully understanding NLRs and their application in breast imaging, radiologists can minimize false-positive findings and unnecessary biopsies...
November 22, 2017: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/29166149/journal-club-redefining-the-radiology-curriculum-in-medical-school-vertical-integration-and-global-accessibility
#13
Michele Retrouvey, Anthony Paul Trace, Craig W Goodmurphy, Sarah Shaves
OBJECTIVE: Radiology interconnects medical disciplines given that a working understanding of imaging is essential to clinicians of every specialty. Using online education, we created a globally accessible, web-based undergraduate medical radiology curriculum modeled after the National Medical Student Curriculum in Radiology program of the Alliance of Medical Student Educators in Radiology. SUBJECTS AND METHODS: Seventy-four radiology faculty-mentored video modules were produced, 50 of which were integrated into the 1st-year anatomy course...
November 22, 2017: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/29166148/in-vivo-differentiation-of-uric-acid-versus-non-uric-acid-urinary-calculi-with-third-generation-dual-source-dual-energy-ct-at-reduced-radiation-dose
#14
Axelle Franken, Pierre Alain Gevenois, Alain Van Muylem, Nigel Howarth, Caroline Keyzer
OBJECTIVE: The objective of our study was to evaluate in vivo urinary calculus characterization with third-generation dual-source dual-energy CT (DECT) at reduced versus standard radiation dose. SUBJECTS AND METHODS: One hundred fifty-three patients requiring unenhanced CT for suspected or known urolithiasis were prospectively included in our study. They underwent two acquisitions at reduced-dose CT (90 kV and 50 mAsref; Sn150 kV and 31 mAsref, where Sn denotes the interposition of a tin filter in the high-energy beam) and standard-dose CT (90 kV and 50 mAsref; Sn150 kV and 94 mAsref)...
November 22, 2017: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/29166147/preliminary-results-of-lung-cancer-screening-in-a-socioeconomically-disadvantaged-population
#15
Phillip L Guichet, Beringia Y Liu, Bhushan Desai, Zul Surani, Steven Y Cen, Christopher Lee
OBJECTIVE: The objective of our study was to describe the preliminary results of our clinical low-dose CT (LDCT) lung cancer screening program targeting a minority, socioeconomically disadvantaged, high-risk population different from that studied in the National Lung Screening Trial (NLST). MATERIALS AND METHODS: Community partner clinics in an underserved region of south Los Angeles County referred interested candidates to our program. All patients met National Comprehensive Cancer Network eligibility criteria for lung cancer screening...
November 22, 2017: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/29166146/screening-for-lung-cancer-communicating-with-patients
#16
Daniel B Green, Bradley B Pua, Carolyn B Crawford, Genevieve N Abbey, Ian R Drexler, Alan C Legasto, James F Gruden
OBJECTIVE: The purposes of this article are to detail the experience of a single-center academic institution in applying the patient-centered approach to a lung cancer screening program and to examine how this approach can expand to other aspects of follow-up imaging of lung nodules. CONCLUSION: As the practice of patient-centered radiology gains attention, diagnostic radiologists are findings new ways to become more involved in patient care. A lung cancer screening program is one opportunity for radiologists to consult with and educate patients...
November 22, 2017: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/29140119/ct-features-of-the-usual-interstitial-pneumonia-pattern-differentiating-connective-tissue-disease-associated-interstitial-lung-disease-from-idiopathic-pulmonary-fibrosis
#17
Jonathan H Chung, Christian W Cox, Steven M Montner, Ayodeji Adegunsoye, Justin M Oldham, Aliya N Husain, Rekha Vij, Imre Noth, David A Lynch, Mary E Strek
OBJECTIVE: A substantial proportion of cases of usual interstitial pneumonia (UIP) are due to connective tissue disease (CTD)-associated interstitial lung disease (ILD). The purpose of this study was to determine whether specific CT findings can help differentiate a UIP pattern of CTD-ILD from a UIP pattern of idiopathic pulmonary fibrosis (IPF) and whether these signs are associated with survival. MATERIALS AND METHODS: Adults visiting an ILD clinic from 2006 to 2015 enrolled in a research registry with a multidisciplinary diagnosis of CTD-ILD or IPF and a UIP pattern at high-resolution CT were included in the study...
November 15, 2017: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/29140118/-11-c-choline-pet-ct-for-detection-and-localization-of-parathyroid-adenomas
#18
Ahmad Parvinian, Erica L Martin-Macintosh, Ajit H Goenka, Jolanta M Durski, Brian P Mullan, Brad J Kemp, Geoffrey B Johnson
OBJECTIVE: The purpose of this study is to determine the efficacy of (11)C-choline PET/CT for the detection of parathyroid adenomas by retrospectively reviewing a large patient population. MATERIALS AND METHODS: In this single-institution retrospective study, 7088 (11)C-choline PET/CT scans performed of 2933 men with prostate cancer from January 2005 through February 2016 were evaluated. Patients with suspected parathyroid adenomas were identified through a review of the electronic medical record and relevant imaging...
November 15, 2017: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/29140117/comparison-of-radiation-dose-and-image-quality-of-abdominopelvic-ct-using-iterative-aidr-3d-and-conventional-reconstructions
#19
Caroline Duarte de Mello-Amoedo, Aparecido Nakano Martins, Adriano Tachibana, Daniella Ferraro Pinho, Ronaldo Hueb Baroni
OBJECTIVE: The purpose of this study is to compare radiation dose and image quality of abdominopelvic CT studies reconstructed with iterative and conventional techniques. MATERIALS AND METHODS: This retrospective study enrolled 99 patients who underwent abdominopelvic CT examinations with the portal venous phase images reconstructed with both filtered back projection and Adaptive Iterative Dose Reduction 3D (AIDR 3D) at different time points. Subjective assessment of image quality was performed by two radiologists who scored axial images for overall quality, sharpness, noise, and acceptability in a blinded fashion...
November 15, 2017: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/29140116/a-randomized-study-of-patient-risk-perception-for-incidental-renal-findings-on-diagnostic-imaging-tests
#20
Stella K Kang, Laura D Scherer, Alec J Megibow, Leslie J Higuita, Nathanael Kim, R Scott Braithwaite, Angela Fagerlin
OBJECTIVE: The purpose of this study is to assess differences in patient distress, risk perception, and treatment preferences for incidental renal findings with descriptive versus combined descriptive and numeric graphical risk information. MATERIALS AND METHODS: A randomized survey study was conducted for adult patients about to undergo outpatient imaging studies at a large urban academic institution. Two survey arms contained either descriptive or a combination of descriptive and numeric graphical risk information about three hypothetical incidental renal findings at CT: 2-cm (low risk) and 5-cm (high risk) renal tumors and a 2-cm (low risk) renal artery aneurysm...
November 15, 2017: AJR. American Journal of Roentgenology
journal
journal
20008
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"