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Academic Radiology

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https://www.readbyqxmd.com/read/29352641/can-you-do-health-disparities-research-with-publicly-available-datasets
#1
Danny R Hughes
RATIONALE AND OBJECTIVES: Given the growing importance of identifying and reducing health disparities, it is important for radiologist researchers to engage in this space to promote evidence-based imaging disparities policy. However, researchers are often hindered by access to appropriate data to perform quality research. MATERIALS AND METHODS: This paper reviews existing publicly available data sets that may be useful for performing imaging disparities research...
January 15, 2018: Academic Radiology
https://www.readbyqxmd.com/read/29339079/diagnostic-usefulness-of-combination-of-diffusion-weighted-imaging-and-t2wi-including-apparent-diffusion-coefficient-in-breast-lesions-assessment-of-histologic-grade
#2
Keum Won Kim, Cherie M Kuzmiak, Young Joong Kim, Jae Young Seo, Hae Kyoung Jung, Mu-Sik Lee
PURPOSE: This study aimed to compare the diagnostic values of a combination of diffusion-weighted imaging and T2-weighted imaging (DWI-T2WI) with dynamic contrast-enhanced magnetic resonance imaging (DCE-MRI), and to evaluate the correlation of DWI with the histologic grade in breast cancer. MATERIALS AND METHODS: This study evaluated a total of 169 breast lesions from 136 patients who underwent both DCE-MRI and DWI (b value, 1000s/mm2). Morphologic and kinetic analyses for DCE-MRI were classified according to the Breast Imaging-Reporting and Data System...
January 12, 2018: Academic Radiology
https://www.readbyqxmd.com/read/29337090/the-clinical-impact-of-resident-attending-discrepancies-in-on-call-radiology-reporting-a-retrospective-assessment
#3
Sebastian R McWilliams, Christopher Smith, Yaseen Oweis, Kareem Mawad, Constantine Raptis, Vincent Mellnick
RATIONALE AND OBJECTIVES: The purpose of this study is to quantify the clinical impact of resident-attending discrepancies at a tertiary referral academic radiology residency program by assessing rates of intervention, discrepancy confirmation, recall rate, and management change rate; furthermore, a discrepancy categorization system will be assessed. MATERIALS AND METHODS: Retrospective review of the records was performed for n = 1482 discrepancies that occurred in the 17-month study period to assess the clinical impact of discrepancies...
January 12, 2018: Academic Radiology
https://www.readbyqxmd.com/read/29337091/a-clinically-meaningful-interpretation-of-the-prospective-investigation-of-pulmonary-embolism-diagnosis-pioped-ii-and-iii-data
#4
Paul Cronin, Ben A Dwamena
RATIONALE AND OBJECTIVES: This study aimed to calculate the multiple-level likelihood ratios (LRs) and posttest probabilities for a positive, indeterminate, or negative test result for multidetector computed tomography pulmonary angiography (MDCTPA) ± computed tomography venography (CTV) and magnetic resonance pulmonary angiography (MRPA) ± magnetic resonance venography (MRV) for each clinical probability level (two-, three-, and four-level) for the nine most commonly used clinical prediction rules (CPRs) (Wells, Geneva, Miniati, and Charlotte)...
January 11, 2018: Academic Radiology
https://www.readbyqxmd.com/read/29337089/thermal-field-distributions-of-ablative-experiments-using-cyst-mimicking-phantoms-comparison-of-microwave-and-radiofrequency-ablation
#5
Xiao-Wen Huang, Fang Nie, Zeng-Cheng Wa, Hang-Tong Hu, Qing-Xiu Huang, Huan-Ling Guo, Qiao Zheng, Xiao-Yan Xie, Wei Wang, Ming-De Lu
RATIONALE AND OBJECTIVES: The objective of this study was to explore the thermal field distribution of cystic lesions undergoing microwave ablation (MWA) and radiofrequency ablation (RFA) using in vitro phantoms. MATERIALS AND METHODS: Cyst-mimicking lesions filled with sodium chloride (NaCl) solution in acrylamide phantoms were treated with MWA and RFA in vitro. The radiofrequency electrodes or MWA antennas were implanted in the centers of the artificial cystic lesions...
January 11, 2018: Academic Radiology
https://www.readbyqxmd.com/read/29331363/breast-imaging-match-highlights-the-need-to-unify-the-approach-to-fellowship
#6
LETTER
Cory M Pfeifer
No abstract text is available yet for this article.
January 10, 2018: Academic Radiology
https://www.readbyqxmd.com/read/29331362/multi-model-analysis-of-diffusion-weighted-imaging-of-normal-testes-at-3-0-t-preliminary-findings
#7
Xiangde Min, Zhaoyan Feng, Liang Wang, Jie Cai, Basen Li, Zan Ke, Peipei Zhang, Huijuan You, Xu Yan
RATIONALE AND OBJECTIVES: This study aimed to establish diffusion quantitative parameters (apparent diffusion coefficient [ADC], DDC, α, Dapp, and Kapp) in normal testes at 3.0 T. MATERIALS AND METHODS: Sixty-four healthy volunteers in two age groups (A: 10-39 years; B: ≥ 40 years) underwent diffusion-weighted imaging scanning at 3.0 T. ADC1000, ADC2000, ADC3000, DDC, α, Dapp, and Kapp were calculated using the mono-exponential, stretched-exponential, and kurtosis models...
January 10, 2018: Academic Radiology
https://www.readbyqxmd.com/read/29331361/uterine-artery-embolization-an-analysis-of-online-patient-information-quality-and-readability-with-historical-comparison
#8
Timothy E Murray, Tayyaub Mansoor, Dermot J Bowden, Damien C O'Neill, Michael J Lee
RATIONALE AND OBJECTIVES: Investigators aimed to assess online information describing uterine artery embolization (UAE) to examine the quality and readability of websites patients are accessing. MATERIALS AND METHODS: A list of applicable, commonly used searchable terms was generated, including "Uterine Artery Embolization," "Fibroid Embolization," "Uterine Fibroid Embolization," and "Uterine Artery Embolisation." Each possible term was assessed across the five most-used English language search engines to determine the most commonly used term...
January 10, 2018: Academic Radiology
https://www.readbyqxmd.com/read/29331360/fully-automated-segmentation-of-polycystic-kidneys-from-noncontrast-computed-tomography-a-feasibility-study-and-preliminary-results
#9
Dario Turco, Maddalena Valinoti, Eva Maria Martin, Carlo Tagliaferri, Francesco Scolari, Cristiana Corsi
RATIONALE AND OBJECTIVES: Total kidney volume is an important biomarker for the evaluation of autosomal dominant polycystic kidney disease progression. In this study, we present a novel approach for automated segmentation of polycystic kidneys from non-contrast-enhanced computed tomography (CT) images. MATERIALS AND METHODS: Non-contrast-enhanced CT images were acquired from 21 patients with a diagnosis of autosomal dominant polycystic kidney disease. Kidney volumes obtained from the fully automated method were compared to volumes obtained by manual segmentation and evaluated using linear regression and Bland-Altman analyses...
January 10, 2018: Academic Radiology
https://www.readbyqxmd.com/read/29331359/quantitative-ct-evaluation-of-small-pulmonary-vessels-in-patients-with-acute-pulmonary-embolism
#10
Shin Matsuoka, Akiyuki Kotoku, Tsuneo Yamashiro, Shoichiro Matsushita, Atsuko Fujikawa, Kunihiro Yagihashi, Yasuo Nakajima
RATIONALE AND OBJECTIVES: The objective of this study was to investigate the correlation between the computed tomography (CT) cross-sectional area (CSA) of small pulmonary vessels and the CT obstruction index in patients with acute pulmonary embolism (PE) and the correlation between the changes in these measurements after anticoagulant therapy. MATERIALS AND METHODS: Fifty-two patients with acute PE were selected for this study. We measured the CSA less than 5 mm2 on coronal reconstructed images to obtain the percentage of the CSA (%CSA < 5)...
January 10, 2018: Academic Radiology
https://www.readbyqxmd.com/read/29326049/quantitative-ct-assessment-of-gynecomastia-in-the-general-population-and-in-dialysis-cirrhotic-and-obese-patients
#11
Eyal Klang, Nayroz Kanana, Alon Grossman, Steve Raskin, Jana Pikovsky, Miri Sklair, Lior Heller, Shelly Soffer, Edith M Marom, Eli Konen, Marianne Michal Amitai
RATIONALE AND OBJECTIVES: Gynecomastia is the benign enlargement of the male breast because of proliferation of the glandular component. To date, there is no radiological definition of gynecomastia and no quantitative evaluation of breast glandular tissues in the general male population. The aims of this study were to supply radiological-based measurements of breast glandular tissue in the general male population, to quantitatively assess the prevalence of gynecomastia according to age by decades, and to evaluate associations between gynecomastia and obesity, cirrhosis, and dialysis...
January 8, 2018: Academic Radiology
https://www.readbyqxmd.com/read/29291911/self-authorship-in-radiology-education
#12
Richard B Gunderman, Jakob A Weaver
No abstract text is available yet for this article.
December 29, 2017: Academic Radiology
https://www.readbyqxmd.com/read/29275941/breast-imaging-outcomes-following-abnormal-thermography
#13
Colleen H Neal, Kelsey A Flynt, Deborah O Jeffries, Mark A Helvie
RATIONALE AND OBJECTIVES: The study aimed to determine the outcome of patients presenting for evaluation of abnormal breast thermography. MATERIALS AND METHODS: Following Institutional Review Board approval, retrospective search identified 38 patients who presented for conventional breast imaging following a thermography-detected abnormality. Study criteria included women who had mammogram and/or breast ultrasound performed for evaluation of a thermography-detected abnormality between January 1, 2000, and December 31, 2015...
December 21, 2017: Academic Radiology
https://www.readbyqxmd.com/read/29275940/how-well-does-dual-energy-ct-with-fast-kilovoltage-switching-quantify-ct-number-and-iodine-and-calcium-concentrations
#14
Shingo Ohira, Tsukasa Karino, Yoshihiro Ueda, Yuya Nitta, Naoyuki Kanayama, Masayoshi Miyazaki, Masahiko Koizumi, Teruki Teshima
RATIONALE AND OBJECTIVES: Because it is imperative for understanding the performance of dual-energy computed tomography scanner to determine clinical diagnosis, we aimed to assess the accuracy of quantitative measurements using dual-energy computed tomography with fast kilovoltage switching. MATERIALS AND METHODS: Quantitative measurements were performed for 16 reference materials (physical density, 0.965-1.550 g/cm3; diameter of rod, 2.0-28.5 mm; iodine concentration, 2-15 mg/mL; and calcium concentration, 50-300 mg/mL) with varying scanning settings, and the measured values were compared to their theoretical values...
December 21, 2017: Academic Radiology
https://www.readbyqxmd.com/read/29273189/soft-tissue-sarcoma-response-to-two-cycles-of-neoadjuvant-chemotherapy-a-multireader-analysis-of-mri-findings-and-agreement-with-recist-criteria-and-change-in-suvmax
#15
Jennifer L Favinger, Daniel S Hippe, Darin J Davidson, Saeed Elojeimy, Eira S Roth, Antoinette W Lindberg, Alice S Ha
RATIONALE AND OBJECTIVES: When soft tissue sarcomas are treated with neoadjuvant chemotherapy, the number of cycles of chemotherapy is usually dependent on the tumor's initial response. Popular methods to assess tumor response include Response Evaluation Criteria in Solid Tumors (RECIST) criteria, which rely solely on tumor size, and maximum standardized uptake value (SUVmax) reduction in positron emission tomography (PET), which requires an expensive and high radiation test. We hypothesized that contrast-enhanced magnetic resonance imaging (MRI) may offer a good alternative by providing additional information beyond tumor size...
December 19, 2017: Academic Radiology
https://www.readbyqxmd.com/read/29269182/detection-of-intra-articular-screw-penetration-of-proximal-humerus-fractures-is-postoperative-computed-tomography-the-necessary-imaging-modality
#16
Xiaoyang Jia, Yanxi Chen, Minfei Qiang, Kun Zhang, Haobo Li, Yuchen Jiang, Yijie Zhang
RATIONALE AND OBJECTIVE: Screw penetration is the common complication of proximal humerus fractures treated with locking plates. This study compared postoperative plain radiography to computed tomography (CT) for their abilities in determining screw penetration, and was to evaluate whether advanced imaging modalities (two-dimensional [2D] CT; three-dimensional [3D] CT) could increase surgeons' level of confidence regarding their diagnoses. MATERIALS AND METHODS: Two observers reviewed radiological images of 134 patients who sustained proximal humerus fractures treated with locking plates...
December 18, 2017: Academic Radiology
https://www.readbyqxmd.com/read/29249576/low-tube-voltage-and-iterative-model-reconstruction-in-follow-up-ct-angiography-after-thoracic-endovascular-aortic-repair-ultra-low-radiation-exposure-and-contrast-medium-dose
#17
Ping Hou, Xiangnan Feng, Jie Liu, Xiaopeng Wang, Yaojun Jiang, Leigang Dong, Jianbo Gao
RATIONALE AND OBJECTIVES: This study aimed to investigate the feasibility of reducing radiation exposure and contrast medium (CM) dose in follow-up computed tomography angiography (CTA) after thoracic endovascular aortic repair (TEVAR) using low tube voltage and knowledge-based iterative model reconstruction (IMR). MATERIALS AND METHODS: Thirty-six patients that required follow-up CTA after TEVAR were included in this intra-individual study. The conventional protocol with standard tube voltage of 120 kVp and CM volume of 70 mL was applied in the first follow-up CTA of all the patients (control group A)...
December 14, 2017: Academic Radiology
https://www.readbyqxmd.com/read/29248317/volumetric-mri-in-neurofibromatosis-type-1-nf1-comes-of-age-to-help-determine-initiation-and-monitoring-of-targeted-therapies-for-plexiform-neurofibromas
#18
EDITORIAL
David Viskochil, Luke L Linscott
No abstract text is available yet for this article.
December 13, 2017: Academic Radiology
https://www.readbyqxmd.com/read/29241597/understanding-patient-preference-in-female-pelvic-imaging-transvaginal-ultrasound-and-mri
#19
Michelle D Sakala, Ruth C Carlos, Mishal Mendiratta-Lala, Elisabeth H Quint, Katherine E Maturen
RATIONALE AND OBJECTIVES: Women with pelvic pain or abnormal uterine bleeding may undergo diagnostic imaging. This study evaluates patient experience in transvaginal ultrasound (TVUS) and magnetic resonance imaging (MRI) and explores correlations between preference and symptom severity. MATERIALS AND METHODS: Institutional review board approval was obtained for this Health Insurance Portability and Accountability Act-compliant prospective study. Fifty premenopausal women with pelvic symptoms evaluated by recent TVUS and MRI and without history of gynecologic cancer or hysterectomy were included...
December 11, 2017: Academic Radiology
https://www.readbyqxmd.com/read/29241596/essentials-of-statistical-methods-for-assessing-reliability-and-agreement-in-quantitative-imaging
#20
Arash Anvari, Elkan F Halpern, Anthony E Samir
Quantitative imaging is increasing in almost all fields of radiological science. Modern quantitative imaging biomarkers measure complex parameters including metabolism, tissue microenvironment, tissue chemical properties or physical properties. In this paper, we focus on measurement reliability assessment in quantitative imaging. We review essential concepts related to measurement such as measurement variability and measurement error. We also discuss reliability study methods for intraobserver and interobserver variability, and the applicable statistical tests including: intraclass correlation coefficient, Pearson correlation coefficient, and Bland-Altman graphs and limits of agreement, standard error of measurement, and coefficient of variation...
December 11, 2017: Academic Radiology
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