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https://www.readbyqxmd.com/read/29329150/comparison-of-iodine-density-measurement-among-dual-energy-computed-tomography-scanners-from-3-vendors
#1
Hyungjin Kim, Jin Mo Goo, Chang Kyung Kang, Kum Ju Chae, Chang Min Park
OBJECTIVES: The aims of this study were to analyze the effect of dual-energy computed tomography (DECT) scanners and fluid characteristics on iodine quantification and to calculate the measurement variability range induced by those variables. METHODS: We performed an experimental phantom study with 4 mediastinal iodine phantoms. Each phantom contained 6 tubes of different iodine concentrations (0, 1.0, 2.5, 5.0, 10.0, and 20.0 mg/mL) diluted in a specific solvent, which was water, 10% amino acid solution, 20% lipid emulsion, or 18% calcium solution, respectively...
January 12, 2018: Investigative Radiology
https://www.readbyqxmd.com/read/29326867/cavitary-lung-lesion-suspicious-for-malignancy-reveals-mycobacterium-xenopi
#2
Sumit Fogla, Vaishali M Pansare, Luis G Camero, Uzma Syeda, Naveen Patil, Arun Chaudhury
We report the case of a 68-year-old gentleman who presented with musculoskeletal chest pain which appeared suddenly when he bent over with his dog. The chest pain was localized to the left lower chest and increased with movement and deep breathing. The patient did not complain weight loss, night sweat, fever or chill. He complained of mild cough, with expectoration of whitish mucus. Imaging revealed cavitary chest lesion in the right upper lobe, which was initially suspected to be lung cancer. The patient had a 50-year-old history of smoking 2 packs per day...
2018: Respiratory Medicine Case Reports
https://www.readbyqxmd.com/read/29325682/computer-based-quantitative-computed-tomography-image-analysis-in-idiopathic-pulmonary-fibrosis-a-mini-review
#3
REVIEW
Hirotsugu Ohkubo, Hiroaki Nakagawa, Akio Niimi
Idiopathic pulmonary fibrosis (IPF) is the most common type of progressive idiopathic interstitial pneumonia in adults. Many computer-based image analysis methods of chest computed tomography (CT) used in patients with IPF include the mean CT value of the whole lungs, density histogram analysis, density mask technique, and texture classification methods. Most of these methods offer good assessment of pulmonary functions, disease progression, and mortality. Each method has merits that can be used in clinical practice...
January 2018: Respiratory Investigation
https://www.readbyqxmd.com/read/29324936/the-impact-of-lung-perfusion-scintigraphy-in-the-emergency-management-of-patients-with-suspected-pulmonary-embolism
#4
Cristina Ferrari, Alessandra Cimino, Giacomo Bianco, Francesca Iuele, Alessandra Di Palo, Margherita Fanelli, Artor Niccoli-Asabella, Giuseppe Rubini
OBJECTIVE: Pulmonary Embolism (PE) is an emergency condition that requires immediate treatment. As the symptoms and the risk factors are nonspecific, PE differential diagnosis is often required. Even if angio-CT is considered the gold standard for PE diagnosis, the frequent allergic condition and/or chronic renal failure of patients make, in most cases, not possible the use of contrast enhancement in emergency with even more increasing use of Lung Perfusion Scintigraphy (LPS), as a simple and fast examination with no preparation/contraindication...
September 2017: Hellenic Journal of Nuclear Medicine
https://www.readbyqxmd.com/read/29323552/using-the-american-college-of-radiology-dose-index-registry-to-evaluate-practice-patterns-and-radiation-dose-estimates-of-pediatric-body-ct
#5
Benjamin Wildman-Tobriner, Keith J Strauss, Mythreyi Bhargavan-Chatfield, Nadja Kadom, Peter Vock, Kimberly E Applegate, Donald P Frush
OBJECTIVE: Imaging registries afford opportunities to study large, heterogeneous populations. The purpose of this study was to examine the American College of Radiology CT Dose Index Registry (DIR) for dose-related demographics and metrics of common pediatric body CT examinations. MATERIALS AND METHODS: Single-phase CT examinations of the abdomen and pelvis and chest submitted to the DIR over a 5-year period (July 2011-June 2016) were evaluated (head CT frequency was also collected)...
January 11, 2018: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/29322585/scapular-fractures-in-the-pan-scan-era
#6
Cortlyn Brown, Karim Elmobdy, Ali S Raja, Robert M Rodriguez
BACKGROUND: Scapular fractures have been traditionally taught to be associated with significant injuries and major morbidity. As we demonstrated with sternal fracture, pulmonary contusion and rib fracture, increased chest CT utilization and head-to-pelvis CT (pan-scan) protocols in blunt trauma evaluation, however, may diagnose minor, clinically irrelevant scapular fractures, possibly rendering previous teachings obsolete. OBJECTIVES: To determine the 1) percentages of scapular fractures seen on chest CT only (SOCTO) versus seen on both CXR and CT and of isolated scapular fracture (scapular fracture without other thoracic injuries), 2) frequencies of associated thoracic injury with scapular fracture, and 3) proportion of patients admitted, mortality, hospital length of stay, and injury severity scores (ISS), comparing four patient groups: scapular fracture, non-scapular fracture, scapular fracture SOCTO, and isolated scapular fracture...
January 11, 2018: Academic Emergency Medicine: Official Journal of the Society for Academic Emergency Medicine
https://www.readbyqxmd.com/read/29320807/overlap-of-interstitial-pneumonia-with-autoimmune-features-with-undifferentiated-connective-tissue-disease-and-contribution-of-uip-to-mortality
#7
Bryan T Kelly, Teng Moua
BACKGROUND AND OBJECTIVE: Criteria for interstitial pneumonia with autoimmune features (IPAF) were recently established for research purposes in a joint statement from the European Respiratory Society (ERS) and American Thoracic Society (ATS). We reviewed the utility of these criteria in patients previously diagnosed as broadly defined undifferentiated connective tissue disease (UCTD) and noted overlapping IPAF findings. Additional review was given to IPAF patients with usual interstitial pneumonia (UIP) on histopathology or radiology in terms of survival and outcome...
January 10, 2018: Respirology: Official Journal of the Asian Pacific Society of Respirology
https://www.readbyqxmd.com/read/29312744/pathway-and-application-value-of-exploration-of-the-pulmonary-artery-by-endobronchial-ultrasound
#8
Peng Li, Cen Wu, Wei Zheng, Li Zhao
Background: The current standard methods for detecting pulmonary artery diseases are pulmonary artery enhanced computed tomography (CT) scan and pulmonary arteriography. However, some patients cannot tolerate these procedures for various reasons. The present study aimed to investigate the feasibility and operation process of endobronchial ultrasound (EBUS) in exploring the pulmonary artery. Methods: Based on normal contrast-enhanced chest CT images, the sites and process for exploring the pulmonary arteries were established...
December 2017: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/29312727/clinical-features-diagnosis-and-thoracoscopic-surgical-treatment-of-thymic-cysts
#9
Xun Wang, Kezhong Chen, Xiao Li, Yun Li, Fan Yang, Jianfeng Li, Guanchao Jiang, Jun Liu, Jun Wang
Background: Thymic cysts are rare benign developmental anomalies and there is no consensus management for thymic cysts. The aim of this study was to disclose the efficacy of perioperative diagnosis for thymic cysts by chest computerized tomography (CT) and to elucidate the surgical procedure by video-assisted thoracic surgery (VATS) in the management of thymic cysts. Methods: We retrospectively reviewed 108 consecutive thymic cyst patients who underwent VATS at our institution between April 2001 and August 2015...
December 2017: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/29302738/comparison-between-the-diagnostic-accuracies-of-18f-fluorodeoxyglucose-positron-emission-tomography-computed-tomography-and-conventional-imaging-in-recurrent-urothelial-carcinomas-a-retrospective-multicenter-study
#10
Fabio Zattoni, Elena Incerti, Michele Colicchia, Paolo Castellucci, Stefano Panareo, Maria Picchio, Federico Fallanca, Alberto Briganti, Marco Moschini, Andrea Gallina, Jeffrey R Karnes, Val Lowe, Stefano Fanti, Riccardo Schiavina, Ilaria Rambaldi, Vincenzo Ficarra, Laura Evangelista
PURPOSE: To determine the performance accuracy of 18F-fluorodeoxyglucose positron emission tomography/computed tomography (FDG PET/CT) after primary tumor treatment for both bladder cancer (BC) and upper tract urothelial cancer (UTUC). To compare the accuracy of FDG PET/CT with that of contrast-enhanced-ceCT and magnetic resonance imaging (MRI). METHODS: Data of patients with recurrent urothelial carcinomas (UC) after primary treatment were collected in a retrospective, international multicenter study...
January 4, 2018: Abdominal Radiology
https://www.readbyqxmd.com/read/29299698/pulmonary-adenocarcinoma-possibly-developed-from-the-cut-end-of-small-sized-adenocarcinoma-in-the-lung-periphery-as-recurrence-13%C3%A2-years-after-its-wedge-resection
#11
Takaomi Hanaoka, Makoto Kurai, Mitsuyo Okada, Satoshi Ishizone, Fumitoshi Karasawa, Akira Iizuka, Meguru Ikeyama, Jun Nakayama
BACKGROUND: It is a big topic for general thoracic surgery whether still curability can be obtained by limited resection for peripheral small-sized nodules of non-small cell lung cancer (NSCLC) in the current era of frequent computed tomography (CT) use. Accumulation of information on problematic cases would be meaningful for surgeons to select better surgical procedures. CASE PRESENTATION: A 69-year-old man was pointed out an enlarged 2.1-cm solid nodule on the edge of staple line of the residual right upper lobe by chest CT...
January 3, 2018: Surgical Case Reports
https://www.readbyqxmd.com/read/29298331/detection-of-artificial-pulmonary-lung-nodules-in-ultralow-dose-ct-using-an-ex-vivo-lung-phantom
#12
Caroline Alexandra Burgard, Thomas Gaass, Madeleine Bonert, David Bondesson, Natalie Thaens, Maximilian Ferdinand Reiser, Julien Dinkel
OBJECTIVES: To assess the image quality of 3 different ultralow-dose CT protocols on pulmonary nodule depiction in a ventilated ex vivo-system. MATERIALS AND METHODS: Four porcine lungs were inflated inside a dedicated chest phantom and prepared with n = 195 artificial nodules (0.5-1 mL). The artificial chest wall was filled with water to simulate the absorption of a human chest. Images were acquired with a 2x192-row detector CT using low-dose (reference protocol with a tube voltage of 120 kV) and 3 different ULD protocols (respective effective doses: 1mSv and 0...
2018: PloS One
https://www.readbyqxmd.com/read/29297607/signal-enhancement-ratio-imaging-of-the-lung-parenchyma-with-ultra-fast-steady-state-free-precession-mri-at-1-5t
#13
Orso Pusterla, Gregor Sommer, Francesco Santini, Mark Wiese, Didier Lardinois, Michael Tamm, Jens Bremerich, Grzegorz Bauman, Oliver Bieri
BACKGROUND: Lung perfusion MRI after i.v. gadolinium (Gd) contrast administration is commonly based on spoiled gradient-echo acquisitions, such as volume-interpolated breath-hold examinations (VIBE), suffering from low signal-to-noise in the parenchyma. PURPOSE: To investigate the lung signal enhancement ratio (SER) with ultra-fast steady-state free precession (ufSSFP) after Gd-administration. STUDY TYPE: Retrospective. SUBJECTS: Ten subjects with healthy lungs; nine patients with pulmonary diseases (chronic obstructive pulmonary disease [COPD], lung cancer, pulmonary fibrosis, lung contusion)...
January 3, 2018: Journal of Magnetic Resonance Imaging: JMRI
https://www.readbyqxmd.com/read/29296166/multimodal-imaging-for-the-assessment-of-a-cardiac-mass-a-case-of-primary-cardiac-sarcoma
#14
Benjamin Abels, Steffen Pfeiffer, Jana Stix, Johannes Schwab
We present a case of an 85-year-old patient who underwent clinical work-up for chronic heart failure, acute coronary syndrome, and pulmonary embolism, until she was diagnosed with a cardiac mass that was histologically identified as sarcoma. The aim of this educational case report is to raise awareness of cardiac masses and to point out diagnostic hints towards a cardiac tumor on chest X-ray, coronary angiography, echocardiography, and chest CT. Moreover, the vital role of cardiac magnetic resonance for the diagnosis of a cardiac mass is highlighted...
November 2017: Journal of Radiology Case Reports
https://www.readbyqxmd.com/read/29290259/radiomics-and-radiogenomics-in-lung-cancer-a-review-for-the-clinician
#15
REVIEW
Rajat Thawani, Michael McLane, Niha Beig, Soumya Ghose, Prateek Prasanna, Vamsidhar Velcheti, Anant Madabhushi
Lung cancer is responsible for a large proportion of cancer-related deaths across the globe, with delayed detection being perhaps the most significant factor for its high mortality rate. Though the National Lung Screening Trial argues for screening of certain at-risk populations, the practical implementation of these screening efforts has not yet been successful and remains in high demand. Radiomics refers to the computerized extraction of data from radiologic images, and provides unique potential for making lung cancer screening more rapid and accurate using machine learning algorithms...
January 2018: Lung Cancer: Journal of the International Association for the Study of Lung Cancer
https://www.readbyqxmd.com/read/29288227/endobronchial-metastasis-of-mixed-mullerian-tumour-of-the-uterus
#16
Vadsala Baskaran, Laura Pugh, Robert James Berg, John Anderson
Endobronchial metastasis occurs in only 2%-5% of non-pulmonary cancers. Here we report on an 84-year-old woman who presented with breathlessness and light-headedness while on holiday in Australia, 2 years post-treatment for endometrial cancer. Initial CT pulmonary angiogram identified a soft tissue mass in the left hemithorax. A chest radiograph performed after repatriation was consistent with a large left pleural effusion, but bedside ultrasound showed a lobulated mass involving the left hemidiaphragm. A pleural procedure in the traditional 'triangle of safety' would have resulted in inadvertent puncture of the underlying mass...
December 28, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/29287961/ct-guided-fine-needle-aspiration-biopsy-of-pulmonary-nodules-8-mm-or-less-has-a-higher-diagnostic-accuracy-than-positron-emission-tomography-ct
#17
Shruthi Suresh, Gayle R Salama, Amit Ramjit, Ziyad Mahfoud, Kyungmouk Steve Lee, Bradley B Pua
PURPOSE: To compare diagnostic accuracy of CT-guided fine-needle aspiration biopsy (FNA-B) with positron emission tomography (PET)-CT for pulmonary nodules ≤ 8 mm. MATERIALS AND METHODS: A retrospective review of all CT-guided lung FNA-Bs performed between 2011 and 2014 at a single institution was undertaken to evaluate patients who had FNA-B and PET-CT imaging of nodules of ≤ 8 mm. Patients without surgical pathology or 2-year follow-up CT scans were excluded...
December 26, 2017: Journal of Vascular and Interventional Radiology: JVIR
https://www.readbyqxmd.com/read/29285725/influence-of-iterative-reconstruction-on-coronary-calcium-scores-at-multiple-heart-rates-a-multivendor-phantom-study-on-state-of-the-art-ct-systems
#18
N R van der Werf, M J Willemink, T P Willems, M J W Greuter, T Leiner
The objective of this study was to evaluate the influence of iterative reconstruction on coronary calcium scores (CCS) at different heart rates for four state-of-the-art CT systems. Within an anthropomorphic chest phantom, artificial coronary arteries were translated in a water-filled compartment. The arteries contained three different calcifications with low (38 mg), medium (80 mg) and high (157 mg) mass. Linear velocities were applied, corresponding to heart rates of 0, < 60, 60-75 and > 75 bpm...
December 28, 2017: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/29279887/regional-variation-of-computed-tomographic-imaging-in-the-united-states-and-the-risk-of-nephrectomy
#19
H Gilbert Welch, Jonathan S Skinner, Florian R Schroeck, Weiping Zhou, William C Black
Importance: While computed tomography (CT) represents a tremendous advance in diagnostic imaging, it also creates the problem of incidental detection-the identification of tumors unrelated to the clinical symptoms that initiate the test. Objective: To determine the geographic variation in the United States in CT imaging and the corresponding association with one of the most consequential sequelae of incidental detection: nephrectomy. Design, Setting, and Participants: This study is a cross-sectional analysis of age-, sex-, and race-adjusted Medicare data (January 2010-December 2014) from 306 hospital referral regions (HRRs) in the United States and includes information from 15 million fee-for-service Medicare beneficiaries age 65 to 85 years...
December 26, 2017: JAMA Internal Medicine
https://www.readbyqxmd.com/read/29279154/validation-of-an-imaging-based-cardiovascular-risk-score-in-a-scottish-population
#20
Remko Kockelkoren, Pushpa M Jairam, John T Murchison, Thomas P A Debray, Saeed Mirsadraee, Yolanda van der Graaf, Pim A de Jong, Edwin J R van Beek
OBJECTIVES: A radiological risk score that determines 5-year cardiovascular disease (CVD) risk using routine care CT and patient information readily available to radiologists was previously developed. External validation in a Scottish population was performed to assess the applicability and validity of the risk score in other populations. METHODS: 2915 subjects aged ≥40 years who underwent routine clinical chest CT scanning for non-cardiovascular diagnostic indications were followed up until first diagnosis of, or death from, CVD...
January 2018: European Journal of Radiology
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