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Low dose computed tomography

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https://www.readbyqxmd.com/read/28646013/doxorubicin-effect-on-myocardial-metabolism-as-a-pre-requisite-for-subsequent-development-of-cardiac-toxicity-a-translational-18-f-fdg-pet-ct-observation
#1
Matteo Bauckneht, Giulia Ferrarazzo, Francesco Fiz, Silvia Morbelli, Matteo Sarocchi, Fabio Pastorino, Alberto Ghidella, Elena Pomposelli, Maurizio Miglino, Pietro Ameri, Laura Emionite, Flavia Ticconi, Eleonora Arboscello, Ambra Buschiazzo, Elena Augusta Massimelli, Salvatore Fiordoro, Anna Borra, Vanessa Cossu, Annalisa Bozzano, Adalberto Ibatici, Mirco Ponzoni, Paolo Spallarossa, Andrea Gallamini, Paolo Bruzzi, Gianmario Sambuceti, Cecilia Marini
The present translational study aimed to verify whether serial (18)F-fluoro-deoxyglucose Positron Emission Tomography/Computed Tomography (FDG-PET/CT), predicts doxorubicin cardiotoxicity. Methods: Fifteen athymic mice were treated with intravenous administration of saline (n = 5), doxorubicin 5 mg/Kg (n = 5) or doxorubicin 7.5 mg/Kg (n = 5) and submitted to dynamic microPET scan to estimate left ventricular glucose consumption (LV-MRGlu) before and after chemotherapy. Thereafter, we retrospectively identified 69 patients successfully treated with Adriamycin, Bleomycin, Vinblastine, and Dacarbazine (ABVD) regimen for Hodgkin's Disease (HD) and submitted to four consecutive FDG-PET/CT scans...
June 23, 2017: Journal of Nuclear Medicine: Official Publication, Society of Nuclear Medicine
https://www.readbyqxmd.com/read/28640670/rationale-and-design-of-the-lung-cancer-screening-implementation-evaluation-of-patient-centered-care-study
#2
Leah S Miranda, Santanu Datta, Anne C Melzer, Renda Soylemez Wiener, James M Davis, Betty C Tong, Sara E Golden, Christopher G Slatore
Screening for lung cancer using low-dose computed tomography (LDCT) has been demonstrated to reduce lung cancer-related mortality and is being widely implemented. Further research in this area is needed to assess the impact of screening on patient-centered outcomes. Here we describe the design and rationale for a new study entitled Lung Cancer Screening Implementation: Evaluation of Patient-Centered Care. The protocol is composed of an interconnected series of studies evaluating patients and clinicians who are engaged in lung cancer screening in real-world settings...
June 22, 2017: Annals of the American Thoracic Society
https://www.readbyqxmd.com/read/28638344/the-beneficial-effects-of-bisphosphonate-enoxacin-on-cortical-bone-mass-and-strength-in-ovariectomized-rats
#3
Xuqiang Liu, Xinhua Qu, Tao Nie, Zanjing Zhai, Haowei Li, Zhengxiao Ouyang, An Qin, Shuhong Zhang, Shuangyan Zhang, Qiming Fan, Tingting Tang, Zhifeng Yu, Min Dai
Osteoporosis is a major age-related bone disease characterized by low bone mineral density and a high risk of fractures. Bisphosphonates are considered as effective agents treating osteoporosis. However, long-term use of bisphosphonates is associated with some serious side effects, which limits the widespread clinical use of bisphosphonates. Here, we demonstrate a novel type of bone-targeting anti-resorptive agent, bisphosphonate-enoxacin (BE). In this study, ovariectomized rat model was established and treated with PBS, zoledronate (50 μg/kg) and different dose of BE (5 mg/kg and 10 mg/kg), respectively...
2017: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/28638256/comparison-of-ultrasonography-and-low-dose-computed-tomography-for-the-diagnosis-of-pediatric-urolithiasis-in-the-emergency-department
#4
Recep Sade, Hayri Ogul, Suat Eren, Akin Levent, Mecit Kantarci
OBJECTIVE: This study aimed to compare ultrasonography (US) and low-dose computed tomography (LDCT) for diagnosing pediatric urolithiasis in the emergency department. MATERIALS AND METHODS: This retrospective study was approved by our institutional ethics committee, and informed consent was waived. From March 2016 to March 2017, 100 consecutive patients met the selection criteria and were enrolled in the study. Patients were randomly selected in a 1:1 ratio and were allocated to one of the following two imaging groups: US or abdominal LDCT...
June 2017: Eurasian Journal of Medicine
https://www.readbyqxmd.com/read/28637799/-68-ga-psma-pet-ct-and-volumetric-morphology-of-pet-positive-lymph-nodes-stratified-by-tumor-differentiation-of-prostate-cancer
#5
Maria Vinsensia, Peter L Choyke, Boris Hadaschik, Tim Holland-Letz, Jan Moltz, Klaus Kopka, Isabel Rauscher, Walter Mier, Markus Schwaiger, Uwe Haberkorn, Tobias Maurer, Clemens Kratochwil, Matthias Eiber, Frederik Giesel
(68)Ga prostate specific membrane antigen (PSMA) positron emission tomography (PET)/computer tomography (CT) is a new method to detect early nodal metastases in patients with biochemical relapse of prostate cancer (PCa). In this retrospective investigation the dimensions, volume, localization and maximum standardized uptake value (SUVmax) of nodes identified by (68)Ga-PSMA were correlated to their Gleason score (GS) at diagnosis. Methods: All PET/CT images were acquired 60±10 min after intravenous injection of (68)Ga-PSMA (mean dose 176 MBq)...
June 21, 2017: Journal of Nuclear Medicine: Official Publication, Society of Nuclear Medicine
https://www.readbyqxmd.com/read/28637439/a-qualitative-analysis-of-smokers-perceptions-about-lung-cancer-screening
#6
Lindsay Gressard, Amy S DeGroff, Thomas B Richards, Stephanie Melillo, Julia Kish-Doto, Christina L Heminger, Elizabeth A Rohan, Kristine Gabuten Allen
BACKGROUND: In 2013, the US Preventive Services Task Force (USPSTF) began recommending lung cancer screening for high risk smokers aged 55-80 years using low-dose computed tomography (CT) scan. In light of these updated recommendations, there is a need to understand smokers' knowledge of and experiences with lung cancer screening in order to inform the design of patient education and tobacco cessation programs. The purpose of this study is to describe results of a qualitative study examining smokers' perceptions around lung cancer screening tests...
June 21, 2017: BMC Public Health
https://www.readbyqxmd.com/read/28636511/feasibility-of-low-dose-coronary-computed-tomographic-angiography-used-in-atrial-fibrillation-patients
#7
Chenglin Zhao, Mengxi Jiang, Jianxin Liu, Li Gao, Xiaoying Wang
OBJECTIVE: The diagnosis of coronary artery disease (CAD) in atrial fibrillation (AF) patients using coronary computed tomography angiography (CCTA) requires a large exposure dosage or repeated examinations. This study evaluates the feasibility of using low-dose CCTA in the double prospectively ECG-triggered high-pitch spiral acquisition mode (Double Flash Spiral mode). METHODS: Twenty-eight AF patients with suspected CAD were recruited. Double Flash Spiral mode (tube voltage 100 kVp) and iterative reconstruction was used for CCTA examination...
March 21, 2017: Acta Cardiologica
https://www.readbyqxmd.com/read/28630806/prevalence-and-barriers-to-lung-cancer-screening-in-karachi-pakistan-a-cross-sectional-survey-of-smokers-and-physicians
#8
Aleeza Abbasi, Rabbia Siddiqi, Aatika Owais, Tooba Laeeq, Sara N Ali, Zonaira Mushahid, Syed M Ahsan, Aliya S Jatoi, Aleena Abbasi, Ifrah Butt, Ruba Ali, Maham Abbasi, Syeda Naintara N Jaffri, Mariam Jabir, Hajra Khanani, Kaneez Fatima
BACKGROUND: Early detection of lung cancer using low-dose computed tomography (LDCT) can potentially reduce morbidity and mortality. However, LDCT for lung cancer screening, especially in low income countries, has been underutilized. The objective of this study was to evaluate the prevalence and the potential personal, social, and economic barriers of lung cancer screening using LDCT. METHODS: A total sample of 156 smokers and 200 general physicians was collected during December 2016-February 2017 from community settings in Karachi, Pakistan...
May 15, 2017: Curēus
https://www.readbyqxmd.com/read/28627945/-model-concept-of-the-health-economic-evaluation-of-low-dose-ct-lung-cancer-screening-in-hungary
#9
Zoltán Vokó, Magdolna Barra, Anett Molnár, Anna Kerpel-Fronius, Gábor Bajzik, Ildikó Horváth, Mariann Moizs, Balázs Nagy
INTRODUCTION: Lung cancer is a rapidly progressing, often life-threatening disease that constitutes a huge societal burden. Because of the scarce resources of the Hungarian health care system, the cost-effectiveness of introducing low-dose computed tomography screening is a relevant health policy matter. AIM: The aim of this study is to design a model concept for assessing the cost-effectiveness of low-dose computed tomography lung cancer screening in Hungary, and to define the required steps for performing the analysis...
June 2017: Orvosi Hetilap
https://www.readbyqxmd.com/read/28625647/quantification-of-growth-patterns-of-screen-detected-lung-cancers-the-nelson-study
#10
Marjolein A Heuvelmans, Rozemarijn Vliegenthart, Harry J de Koning, Harry J M Groen, Michel J A M van Putten, Uraujh Yousaf-Khan, Carla Weenink, Kristiaan Nackaerts, Pim A de Jong, Matthijs Oudkerk
OBJECTIVES: Although exponential growth is assumed for lung cancer, this has never been quantified in vivo. Aim of this study was to evaluate and quantify growth patterns of lung cancers detected in the Dutch-Belgian low-dose computed tomography (CT) lung cancer screening trial (NELSON), in order to elucidate the development and progression of early lung cancer. MATERIALS AND METHODS: Solid lung nodules found at ≥3 CT examinations before lung cancer diagnosis were included...
June 2017: Lung Cancer: Journal of the International Association for the Study of Lung Cancer
https://www.readbyqxmd.com/read/28625633/cost-effectiveness-of-implementing-computed-tomography-screening-for-lung-cancer-in-taiwan
#11
Szu-Chun Yang, Wu-Wei Lai, Chien-Chung Lin, Wu-Chou Su, Li-Jung Ku, Jing-Shiang Hwang, Jung-Der Wang
BACKGROUND: A screening program for lung cancer requires more empirical evidence. Based on the experience of the National Lung Screening Trial (NLST), we developed a method to adjust lead-time bias and quality-of-life changes for estimating the cost-effectiveness of implementing computed tomography (CT) screening in Taiwan. METHODS: The target population was high-risk (≥30 pack-years) smokers between 55 and 75 years of age. From a nation-wide, 13-year follow-up cohort, we estimated quality-adjusted life expectancy (QALE), loss-of-QALE, and lifetime healthcare expenditures per case of lung cancer stratified by pathology and stage...
June 2017: Lung Cancer: Journal of the International Association for the Study of Lung Cancer
https://www.readbyqxmd.com/read/28625110/ultrasound-facilitated-catheter-directed-low-dose-fibrinolysis-in-elderly-patients-with-pulmonary-embolism-a-seattle-ii-sub-analysis
#12
Brett J Carroll, Samuel Z Goldhaber, Ping-Yu Liu, Gregory Piazza
Elderly patients with acute pulmonary embolism (PE) have higher mortality than non-elderly patients, but receive systemic fibrinolysis less frequently. In this sub-analysis of the SEATTLE II trial, we evaluated the efficacy and safety of ultrasound-facilitated, catheter-directed, low-dose fibrinolysis in elderly patients with submassive and massive PE. We compared patients ⩾65 years old with those <65 years old. Eligible patients had proximal PE and a right ventricular-to-left ventricular (RV/LV) diameter ratio ⩾0...
June 1, 2017: Vascular Medicine
https://www.readbyqxmd.com/read/28621912/use-of-estradiol-promotes-graft-bone-healing-in-rabbit-model-of-anterior-cruciate-ligament-reconstruction-with-a-polyethylene-terephthalate-ligament
#13
Fang Chai, Fang Wan, Jia Jiang, Siheng Wang, Shiyi Chen
The purpose of this study was to investigate whether the local use of estradiol after anterior cruciate ligament (ACL) reconstruction with a polyethylene terephthalate (PET) artificial ligament graft could promote graft-bone healing. A total of 45 New Zealand white rabbits underwent ACL reconstruction with a PET ligament graft. The experimental groups were administered a local estradiol injection at either a low dose after surgery or a high dose after surgery, and the control group did not receive an injection...
June 16, 2017: Artificial Organs
https://www.readbyqxmd.com/read/28609790/analysis-of-patients-x-ray-exposure-in-146-percutaneous-radiologic-gastrostomies
#14
Tim Ole Petersen, Martin Reinhardt, Jochen Fuchs, Dieter Gosch, Alexey Surov, Patrick Stumpp, Thomas Kahn, Michael Moche
Purpose Analysis of patient´s X-ray exposure during percutaneous radiologic gastrostomies (PRG) in a larger population. Materials and Methods Data of primary successful PRG-procedures, performed between 2004 and 2015 in 146 patients, were analyzed regarding the exposition to X-ray. Dose-area-product (DAP), dose-length-product (DLP) respectively, and fluoroscopy time (FT) were correlated with the used x-ray systems (Flatpanel Detector (FD) vs. Image Itensifier (BV)) and the necessity for periprocedural placement of a nasogastric tube...
June 13, 2017: RöFo: Fortschritte Auf Dem Gebiete der Röntgenstrahlen und der Nuklearmedizin
https://www.readbyqxmd.com/read/28609321/change-in-lung-volume-following-thoracoscopic-anterior-spinal-fusion-surgery-a-3-dimensional-computed-tomography-investigation
#15
Caroline G Yu, Caroline A Grant, Maree T Izatt, Robert D Labrom, Geoffrey N Askin, Clayton J Adam, J Paige Little
STUDY DESIGN: Lung volumes and thoracic anatomy were measured from low-dose computed tomography (CT) scans preoperatively and 2 years following thoracoscopic anterior spinal fusion (TASF) for adolescent idiopathic scoliosis (AIS). OBJECTIVE: The aim of this study was to assess changes in lung volume after TASF surgical correction. SUMMARY OF BACKGROUND DATA: AIS patients are known to have decreased pulmonary function as a consequence of their spinal and ribcage deformity...
June 15, 2017: Spine
https://www.readbyqxmd.com/read/28602688/quality-control-in-cone-beam-computed-tomography-cbct-efomp-estro-iaea-protocol-summary-report
#16
Hugo de Las Heras Gala, Alberto Torresin, Alexandru Dasu, Osvaldo Rampado, Harry Delis, Irene Hernández Girón, Chrysoula Theodorakou, Jonas Andersson, John Holroyd, Mats Nilsson, Sue Edyvean, Vesna Gershan, Lama Hadid-Beurrier, Christopher Hoog, Gregory Delpon, Ismael Sancho Kolster, Primož Peterlin, Julia Garayoa Roca, Paola Caprile, Costas Zervides
The aim of the guideline presented in this article is to unify the test parameters for image quality evaluation and radiation output in all types of cone-beam computed tomography (CBCT) systems. The applications of CBCT spread over dental and interventional radiology, guided surgery and radiotherapy. The chosen tests provide the means to objectively evaluate the performance and monitor the constancy of the imaging chain. Experience from all involved associations has been collected to achieve a consensus that is rigorous and helpful for the practice...
June 8, 2017: Physica Medica: PM
https://www.readbyqxmd.com/read/28596635/an-investigation-of-low-dose-3d-scout-scans-for-computed-tomography
#17
Juliana Gomes, Grace J Gang, Aswin Mathews, J Webster Stayman
PURPOSE: Commonly 2D scouts or topograms are used prior to CT scan acquisition. However, low-dose 3D scouts could potentially provide additional information for more effective patient positioning and selection of acquisition protocols. We propose using model-based iterative reconstruction to reconstruct low exposure tomographic data to maintain image quality in both low-dose 3D scouts and reprojected topograms based on those 3D scouts. METHODS: We performed tomographic acquisitions on a CBCT test-bench using a range of exposure settings from 16...
February 11, 2017: Proceedings of SPIE
https://www.readbyqxmd.com/read/28592361/ct-imaging-of-solid-renal-masses-pitfalls-and-solutions
#18
REVIEW
S Krishna, C A Murray, M D McInnes, R Chatelain, M Siddaiah, O Al-Dandan, S Narayanasamy, N Schieda
Computed tomography (CT) remains the first-line imaging test for the characterisation of renal masses; however, CT has inherent limitations, which if unrecognised, may result in errors. The purpose of this manuscript is to present 10 pitfalls in the CT evaluation of solid renal masses. Thin section non-contrast enhanced CT (NECT) is required to confirm the presence of macroscopic fat and diagnosis of angiomyolipoma (AML). Renal cell carcinoma (RCC) can mimic renal cysts at NECT when measuring <20 HU, but are usually heterogeneous with irregular margins...
June 4, 2017: Clinical Radiology
https://www.readbyqxmd.com/read/28592015/-clinical-manifestations-of-three-cases-of-surfactant-protein-c-p-v39l-mutation
#19
J H Chen, D Y Zhao, S H An, Y J Zheng, H P Wang, H L Ma
Objective: To investigate the clinical manifestations of surfactant protein C gene (SFTPC) exon-2 c. 115G>G/T (p.V39L). Method: Patients were screened for the entire coding sequence of SFTPC. Three cases from three children's hospital with mutation in p. V39L were reported. Result: All the three cases were females. The age of onset ranged from 2 months to 7 years. Two cases had recurrent lower respiratory tract infection and failed to thrive. One had chronic anoxia and clubbing fingers. Chest computed tomography (CT) showed diffused ground glass pattern, localized emphysema and intralobular septal thickening...
June 2, 2017: Zhonghua Er Ke za Zhi. Chinese Journal of Pediatrics
https://www.readbyqxmd.com/read/28588770/radiation-associated-colon-cancer-a-case-report
#20
Kazuhito Sasaki, Soichiro Ishihara, Keisuke Hata, Tomomichi Kiyomatsu, Hiroaki Nozawa, Kazushige Kawai, Toshiaki Tanaka, Takeshi Nishikawa, Kensuke Otani, Koji Yasuda, Manabu Kaneko, Koji Murono, Hiroyuki Abe, Teppei Morikawa, Toshiaki Watanabe
Radiation-associated colon cancer is a rare clinical entity. We herein describe the case of a patient with radiation-associated colon cancer who had undergone low anterior resection for rectal cancer following preoperative radiotherapy. Certain characteristics of radiation-associated colon cancer are highlighted. The patient was a 48-year-old man who had undergone low anterior resection for rectal cancer following preoperative radiotherapy at a total dose of 50 Gy, at the age of 29 years. When the patient presented at the University of Tokyo Hospital, 19 years after the surgery, he complained of severe anal pain and frequent defecation...
June 2017: Molecular and Clinical Oncology
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