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https://www.readbyqxmd.com/read/28930979/analysis-of-18fdg-pet-ct-imaging-as-a-tool-for-studying-mycobacterium-tuberculosis-infection-and-treatment-in-non-human-primates
#1
Alexander G White, Pauline Maiello, M Teresa Coleman, Jaime A Tomko, L James Frye, Charles A Scanga, Philana Ling Lin, JoAnne L Flynn
Mycobacterium tuberculosis remains the number one infectious agent in the world today. With the emergence of antibiotic resistant strains, new clinically relevant methods are needed that evaluate the disease process and screen for potential antibiotic and vaccine treatments. Positron Emission Tomography/Computed Tomography (PET/CT) has been established as a valuable tool for studying a number of afflictions such as cancer, Alzheimer's disease, and inflammation/infection. Outlined here are a number of strategies that have been employed to evaluate PET/CT images in cynomolgus macaques that are infected intrabronchially with low doses of M...
September 5, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/28930843/clinical-characteristics-of-a-kif21a-mutation-in-a-chinese-family-with-congenital-fibrosis-of-the-extraocular-muscles-type-1
#2
Huiqiong Chen, Tangbing Liu, Zhenhai Zeng, Yufei Wang, Yuanyuan Lin, Lulu Cheng, Qintuo Pan, Feng Gu, Zongming Song, Zongduan Zhang
The aim of the study is to characterize the clinical ocular phenotype with congenital fibrosis of the extraocular muscles type 1 (CFEOM1) and to confirm whether the kinesin family member 21A (KIF21A) mutation was the pathogenic gene in this Chinese family.Three affected individuals and 2 asymptomatic kinsfolk from a Chinese family underwent comprehensive ophthalmic examinations, orbital computerized tomography (CT), and postoperative histological examinations were performed in the proband. All the recruited members were screened for 3 exons (8, 20, and 21) of KIF21A mutations using the polymerase chain reaction (PCR) amplification and direct sequencing of corresponding PCR products...
September 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28929865/false-positive-screens-and-lung-cancer-risk-in-the-national-lung-screening-trial-implications-for-shared-decision-making
#3
Paul F Pinsky, Christina R Bellinger, David P Miller
Objectives Low-dose computed tomography lung cancer screening has been shown to reduce lung cancer mortality but has a high false-positive rate. The precision medicine approach to low-dose computed tomography screening assesses subjects' benefits versus harms based on their personal lung cancer risk, where harms include false-positive screens and resultant invasive procedures. We assess the relationship between lung cancer risk and the rate of false-positive LDCT screens. Methods The National Lung Screening Trial randomized high-risk subjects to three annual screens with low-dose computed tomography or chest radiographs...
January 1, 2017: Journal of Medical Screening
https://www.readbyqxmd.com/read/28928806/alterations-in-iqgap1-expression-and-localization-in-colorectal-carcinoma-and-liver-metastases-following-oxaliplatin-based-chemotherapy
#4
Deborah Rotoli, Manuel Morales, María Del Carmen Maeso, María Del Pino García, Ricardo Gutierrez, Francisco Valladares, Julio Ávila, Lucio Díaz-Flores, Ali Mobasheri, Pablo Martín-Vasallo
IQGAP1 is a scaffolding protein that serves a key role in cell dynamics by integrating internal and external stimuli to distinct signal outputs. Previous studies have identified several genes that are significantly up- or downregulated in the peripheral white cells (PWCs) of patients with colorectal adenocarcinoma (CRC), who underwent oxaliplatin-based chemotherapy (CT). In addition, screening studies have reported that IQ-motif containing GTPase activating protein 1 (IQGAP1) transcriptional expression levels varied from 'off' to 'on' following oxaliplatin CT...
September 2017: Oncology Letters
https://www.readbyqxmd.com/read/28926718/corrigendum
#5
(no author information available yet)
Brunner JP, Jawad BA, McCoul ED. Polypoid change of the middle turbinate and paranasal sinus polyposis are distinct entities. Otolaryngol Head Neck Surg. 2017;157:519-523. (Original doi: 10.1177/0194599817711887) The Results section of this article and its abstract contained several errors in describing data that appears in Tables 1 and 2. The tables contain the correct information, the corrected abstract and article text appears below. Abstract: Results. Of 593 patients, 23 (3.9%) had PCMT and 44 (7.4%) had PSP...
September 1, 2017: Otolaryngology—Head and Neck Surgery
https://www.readbyqxmd.com/read/28926388/opportunistic-use-of-ct-imaging-for-osteoporosis-screening-and-bone-density-assessment-a-qualitative-systematic-review
#6
Elizabeth B Gausden, Benedict U Nwachukwu, Joseph J Schreiber, Dean G Lorich, Joseph M Lane
BACKGROUND: The purpose of this study was to determine the clinical opportunities for the use of computed tomography (CT) imaging for inferring bone quality and to critically analyze the correlation between dual x-ray absorptiometry (DXA) and diagnostic CT as reported in the literature. METHODS: A systematic review of the MEDLINE database was performed in February 2016 using the PubMed interface. The inclusion criteria were English language, studies performed using living human subjects, studies pertaining to orthopaedics, use of conventional diagnostic CT scans, studies that measured cancellous bone, and studies that reported Hounsfield unit (HU) measurements directly rather than a computed bone mineral density...
September 20, 2017: Journal of Bone and Joint Surgery. American Volume
https://www.readbyqxmd.com/read/28924485/hypogonadotropic-hypogonadism-in-human-immunodeficiency-virus-infected-men-uncommonly-low-testosterone-levels
#7
Ana Coelho Gomes, José Maria Aragüés, Sílvia Guerra, Joana Fernandes, Mário Rui Mascarenhas
Hypogonadotropic hypogonadism (HH) is common and occurs prematurely in HIV-infected men. However, HH with very low testosterone has not been described. Three men with normal pubertal development and HIV1 diagnosis at the ages of 22, 34 and 35 years. All complained of decreased libido, anejaculation and erectile dysfunction thirteen years, six months and one year after HIV diagnosis, respectively. Two had depressive syndrome and two were treated with antiretroviral therapy. Laboratory tests revealed isolated HH in all...
2017: Endocrinology, Diabetes & Metabolism Case Reports
https://www.readbyqxmd.com/read/28922275/indications-for-ct-angiography-of-the-vertebral-arteries-after-trauma
#8
Joseph P Drain, Douglas S Weinberg, James S Ramey, Timothy A Moore, Heather A Vallier
STUDY DESIGN: Retrospective. OBJECTIVE: The purpose of this project is to identify factors that predict vertebral artery injury (VAI) in an effort to assess risks and benefits of computed tomography angiography (CT-A) of the neck in the trauma setting. We seek to develop guidelines for practitioners to stratify patients at medium/high risk of VAI from those who are at low risk. SUMMARY OF BACKGROUND DATA: VAI and blunt carotid injury (BCI) together comprise blunt cerebrovascular injury (BCVI)...
September 15, 2017: Spine
https://www.readbyqxmd.com/read/28919394/concomitant-chemotherapy-and-radiotherapy-with-sbrt-boost-for-unresectable-stage-iii-non-small-cell-lung-cancer-a-phase-i-study
#9
Kristin A Higgins, Rathi N Pillai, Zhengjia Chen, Sibo Tian, Chao Zhang, Pretesh Patel, Suchita Pakkala, Jay Shelton, Seth D Force, Felix G Fernandez, Conor E Steuer, Taofeek K Owonikoko, Suresh S Ramalingam, Jeffrey D Bradley, Walter J Curran
PURPOSE: Stereotactic Body Radiation Therapy (SBRT) is now the standard of care in medically inoperable stage I non-small cell lung cancer, yielding high rates of local control. It is unknown if SBRT can be safely utilized in the locally advanced NSCLC setting. This multi-institution phase I study evaluated the safety of 44 Gy conventionally fractionated thoracic radiation with concurrent chemotherapy plus a dose escalated SBRT boost to both the primary tumor and involved mediastinal lymph nodes...
September 12, 2017: Journal of Thoracic Oncology
https://www.readbyqxmd.com/read/28918335/modern-diagnosis-of-chronic-thromboembolic-pulmonary-hypertension
#10
Aileen Kharat, Anne-Lise Hachulla, Stéphane Noble, Frédéric Lador
Chronic thromboembolic pulmonary hypertension (CTEPH) should be suspected in patients presenting persistent dyspnea three months after a pulmonary embolism or in patients presenting with acute pulmonary embolism and suggestive images on the CT-scan. For these patients, a specific diagnostic work-up should be performed. First step consists of the ventilation/perfusion (V/Q) scan which is a good screening test due to its high sensitivity and high negative predictive value. Pulmonary angiography remains the gold standard approach for the confirmation of the diagnosis and pre-surgical evaluation of CTEPH...
September 9, 2017: Thrombosis Research
https://www.readbyqxmd.com/read/28917704/accuracy-of-pedicle-screw-insertion-among-three-image-guided-navigation-systems-a-systematic-review-and-meta-analysis
#11
REVIEW
Jin Peng Du, Yong Fan, Qi Ning Wu, Dai Hua Wang, Jing Zhang, Ding Jun Hao
BACKGROUND: Many retrospective studies of pedicle screw placement have revealed that intraoperative navigation systems provide higher accuracy rates and safety than do free-hand techniques. The accuracy of various image-guided navigation systems has been studied; however, differences have not been well defined due to the lack of adequate evidence-based comparative studies. OBJECTIVE: A meta-analysis was conducted to focus on the variation in pedicle screw insertion among three navigation systems: a three-dimensional fluoroscopy-based navigation system (3D FluoroNav), a two-dimensional fluoroscopy-based navigation system (2D FluoroNav) and a conventional computed tomography navigation system (CT Nav)...
September 13, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28917674/prognostic-value-of-risk-factors-calcium%C3%A2-score-coronary-cta-myocardial%C3%A2-perfusion-imaging-and-invasive%C3%A2-coronary-angiography-in-kidney%C3%A2-transplantation-candidates
#12
Simon Winther, My Svensson, Hanne Skou Jørgensen, Laust Dupont Rasmussen, Niels Ramsing Holm, Lars Christian Gormsen, Kirsten Bouchelouche, Hans Erik Bøtker, Per Ivarsen, Morten Bøttcher
OBJECTIVES: This study sought to perform a prospective head-to-head comparison of the predictive value of clinical risk factors and a variety of cardiac imaging modalities including coronary artery calcium score (CACS), coronary computed tomography angiography (CTA), single-photon emission computed tomography (SPECT), and invasive coronary angiography (ICA) on major adverse cardiac events (MACE) and all-cause mortality in kidney transplantation candidates. BACKGROUND: Current guidelines recommend screening for coronary artery disease in kidney transplantation candidates...
September 9, 2017: JACC. Cardiovascular Imaging
https://www.readbyqxmd.com/read/28914745/is-digital-tomosynthesis-on-par-with-computed-tomography-for-the-detection-and-measurement-of-pulmonary-nodules
#13
Xiang Wen Lee, Henry M Marshall, Steven C Leong, Rachael L O'Rourke, Karin Steinke, Negar Mirjalili, Rayleen V Bowman, Ian A Yang, Kwun M Fong
Chest digital tomosynthesis (DT) has potential advantages compared to computed tomography (CT) such as radiation dose reduction. However, the role of DT in pulmonary nodule management remains investigative. We compared DT against CT for pulmonary nodule detection and size measurement. A clinical population comprising 54 nodules from 30 patients and a screening population comprising 42 nodules from 52 patients were included. Scans were independently read by two radiologists. Agreement in nodule measurements between readers and between modalities was assessed by Bland-Altman analysis using a 95% level of significance...
September 13, 2017: Journal of Thoracic Imaging
https://www.readbyqxmd.com/read/28914465/exploring-avenues-for-best-use-of-cytotechnologists-in-non-gynaecological-cytology-double-screening-or-independent-sign-out
#14
G Fischer, M Haddad, K Cormier
OBJECTIVE: Cytotechnologist (CT) screening workload has been decreasing due to the falling number of Papanicolaou tests. This continuing trend has prompted exploration of ways to best employ the CT skillset. One potential way of more effective use is by having two CTs double screen non-gynaecological (NGC) cases to assess whether this improves screening quality and concordance with pathologists. Another is evaluating the CT's performance on low-complexity negative NGC cases for a potential independent CT sign-out without pathologist review...
September 15, 2017: Cytopathology: Official Journal of the British Society for Clinical Cytology
https://www.readbyqxmd.com/read/28912916/acute-liver-failure-in-a-patient-travelling-from-asia-the-other-face-of-the-coin-of-infectious-disease
#15
Balen Abdulrahman, Mohamed H Ahmed, John Ramage
We present a case of a 63-year-old male who had travelled from South India to United Kingdom (UK) visiting relatives. He had developed episodes of diarrhea, vomiting and fevers while travelling and on assessment in hospital, mild abdominal distension was noted with rapid deterioration to hypovolemic shock. Initial blood test showed a low platelet count with deranged liver function tests (LFTs). It was noted that during admission to intensive care unit (ICU), blood continued to ooze from a previous surgical laparoscopy wound, central and arterial line access sites...
August 2017: Gastroenterology Research
https://www.readbyqxmd.com/read/28906398/abdominal-fat-distribution-measured-using-computed-tomography-is-associated-with-an-increased-risk-of-colorectal-adenoma-in-men
#16
Il-Kook Seo, Beom Jin Kim, Bomin Kim, Chang Hwan Choi, Jeong Wook Kim, Jae Gyu Kim, Se Kyung Chang, Hyun Kang
A few studies have shown inconsistent results regarding the association between the visceral fat proportion and colorectal adenomas. We aimed to investigate the association between abdominal fat distribution measured by computed tomography (CT) and colon adenoma.A total of 336 participants underwent physical examination, blood tests, colonoscopy, and abdominal computed tomography at Chung-Ang University Hospital. The associations between the obesity indicies (body mass index, visceral fat area (VFA), subcutaneous fat area (SFA), VFA-to-SFA ratio (VFA/SFA), and colorectal adenomas were evaluated...
September 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28905656/comparison-of-low-dose-and-standard-dose-abdominal-ct-scan-in-body-stuffers
#17
Hooman Bahrami-Motlagh, Zahra Mahboubi-Fooladi, Babak Salevatipour, Hossein Hassanian-Moghaddam, Seyyed Hadi Mirhashemi
PURPOSE: Detection of body stuffers is challenging in emergency departments. Because of the small size of baggies, plain radiograph is of little value in most suspects. On the other hand, abdomen CT scan is burdened by high cost and radiation dose. This study was performed to compare the image quality, radiation dose and accuracy of low-dose CT scan in comparison with standard dose. MATERIAL AND METHODS: In this prospective study, suspected body stuffers who were referred to the radiology department underwent two different protocols of abdominal non-contrast CT scan simultaneously: low-dose (with equivalent dose to conventional abdominal x-ray) and standard dose...
September 14, 2017: Clinical Toxicology
https://www.readbyqxmd.com/read/28903504/spontaneous-viral-load-decline-and-subsequent-clearance-of-chronic-hepatitis-c-virus-in-postpartum-women-correlates-with-favorable-interleukin-28b-gene-allele
#18
Mohamed Hashem, Ravi Jhaveri, Doa'a A Saleh, Sahar A Sharaf, Fatma El-Mougy, Lobna Abdelsalam, Michelle D Shardell, Hesham El-Ghazaly, Samer S El-Kamary
Background: Postpartum hepatitis C viral (HCV) load decline followed by spontaneous clearance has been previously described. Herein we identify predictors for viral decline in a cohort of HCV-infected postpartum women. Methods: Pregnant women at Cairo University were screened for anti-HCV antibodies and HCV RNA, and viremic women were tested for quantitative HCV RNA at 3, 6, 9, and 12 months postpartum. Spontaneous clearance was defined as undetectable viremia twice at least 6-months apart...
September 15, 2017: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
https://www.readbyqxmd.com/read/28901685/diagnostic-performance-of-ct-gadoxetate-disodium-enhanced-mri-and-pet-ct-for-the-diagnosis-of-colorectal-liver-metastasis-systematic-review-and-meta-analysis
#19
Sang Hyun Choi, So Yeon Kim, Seong Ho Park, Kyung Won Kim, Ja Youn Lee, Seung Soo Lee, Moon-Gyu Lee
BACKGROUND: Imaging studies, including computed tomography (CT), magnetic resonance imaging (MRI), and positron emission tomography (PET), have an essential role in the detection and localization of colorectal liver metastasis (CRLM). PURPOSE: To systematically determine the diagnostic accuracy of multidetector row CT (MDCT), gadoxetate disodium-enhanced MRI, and PET/CT for diagnosing CRLM and the sources of heterogeneity between the reported results. STUDY TYPE: Systematic review and meta-analysis...
September 13, 2017: Journal of Magnetic Resonance Imaging: JMRI
https://www.readbyqxmd.com/read/28901682/referral-population-studies-underestimate-differences-between-human-papillomavirus-assays-in-primary-cervical-screening
#20
M Rebolj, S Njor, E Lynge, S Preisler, D Ejegod, C Rygaard, J Bonde
OBJECTIVE: We studied how representative cytologically abnormal women ("referral populations") are with respect to uncovering differences between human papillomavirus (HPV) assays in the primary screening where most women are cytologically normal. METHODS: A total of 4997 women were tested with SurePath® cytology, and Hybrid Capture 2 (HC2), cobas, CLART and APTIMA HPV assays. Women with positive test results were offered a follow-up. For all detected HPV infections and HPV-positive high-grade cervical intraepithelial neoplasia (≥CIN2), we studied the distributions of assay-specific signal strengths in the baseline samples as documented by the assays' automatically generated reports...
October 2017: Cytopathology: Official Journal of the British Society for Clinical Cytology
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