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World Journal of Radiology

Romman Nourzaie, Jeeban Das, Hiba Abbas, Narayanan Thulasidasan, Panos Gkoutzios, Shahzad Ilyas, Leo Monzon, Tarun Sabharwal, Steven Moser, Athanasios Diamantopoulos
BACKGROUND: Computer tomography angiography (CTA) has been an established method for diagnostic vascular disease of lower limbs. Recently, the method is widely used for diagnosis of vascular pathologies in the upper limbs too. It also has increased the possibilities of this scans being reviewed by no specially trained radiologists. This increases the risk of incidental non vascular findings to be missed or misinterpreted. The study is focusing in the frequency of extravascular incidental finding (EVIF) and highlights the importance for both the reporting radiologist and the referring physician recognizing the frequency of EVIFs...
January 28, 2019: World Journal of Radiology
Duanghathai Pasanta, Tipparat Kongseha, Suchart Kothan
BACKGROUND: Proton magnetic resonance spectroscopy (1 H MRS) is a technique widely used for investigating metabolites in humans. Lipids are stored outside the muscle cell are called extramyocellular lipids (EMCL), and lipids stored on the inside of muscle cells are called intramyocellular lipids (IMCL). The relationship between metabolic syndrome and IMCL has been extensively studied. AIM: To determine the effects of muscle fiber orientations on muscle metabolites using 1 H MRS...
January 28, 2019: World Journal of Radiology
Mahdi Malekpour, Kenneth Widom, James Dove, Joseph Blansfield, Mohsen Shabahang, Denise Torres, Jeffrey L Wild
AIM: To investigate the hemothorax size for which tube thoracostomy is necessary. METHODS: Over a 5-year period, we included all patients who were admitted with blunt chest trauma to our level 1 trauma center. Focus was placed on identifying the hemothorax size requiring tube thoracostomy. RESULTS: A total number of 274 hemothoraces were studied. All patients with hemothoraces measuring above 3 cm received a chest tube. The 50% predicted probability of tube thoracostomy was 2 cm...
December 28, 2018: World Journal of Radiology
Lorenzo Cereser, Marco De Carli, Paola d'Angelo, Elisa Zanelli, Chiara Zuiani, Rossano Girometti
AIM: To compare high-resolution computed tomography (HRCT) findings between humoral primary immunodeficiencies (hPIDs) subtypes; to correlate these findings to pulmonary function tests (PFTs). METHODS: We retrospectively identified 52 consecutive adult patients with hPIDs who underwent 64-row HRCT and PFTs at the time of diagnosis. On a per-patient basis, an experienced radiologist recorded airway abnormalities (bronchiectasis, airway wall thickening, mucus plugging, tree-in-bud, and air-trapping) and parenchymal-interstitial abnormalities (consolidations, ground-glass opacities, linear and/or irregular opacities, nodules, and bullae/cysts) found on HRCT...
November 28, 2018: World Journal of Radiology
Shigeo Hagiwara, Albert Yang, Shoichiro Takao, Yasuhito Kaneko, Taiki Nozaki, Hiroshi Yoshioka
AIM: To investigate the reliability of the established and new scoring methods for Hoffa's fat pad synovitis using magnetic resonance imaging (MRI). METHODS: A total of 139 knees of 115 patients who underwent MRI of the knee with and without gadolinium contrast were enrolled in this study. Proton density (PD)-weighted, PD-weighted fat-suppressed (PD-FS), and postcontrast T1-weighted fat-suppressed (T1CE) images were used for evaluation. Using contrast and non-contrast images, our grading method for synovitis was performed to measure synovial thickness and signal intensity changes of the fat pad [Synovial membrane (SM) score], which was compared with the established methods, including MRI Osteoarthritis Knee Score (MOAKS), parapatellar synovitis score, Whole-Organ Magnetic Resonance Imaging Score (WORMS), and suprapatellar effusion diameter...
November 28, 2018: World Journal of Radiology
Nikolaos Panagiotopoulos, Felix Drüschler, Martin Simon, Florian M Vogt, Sebastian Wolfrum, Steffen Desch, Doreen Richardt, Jörg Barkhausen, Peter Hunold
AIM: To assess potential benefits of an additional unenhanced acquisition in computed tomography angiography (CTA) in patients with suspected acute aortic syndrome (AAS). METHODS: A total of 103 aortic CTA (non-electrocardiography-gated, 128 slices) performed due to suspected AAS were retrospectively evaluated for acute aortic dissection (AAD), intramural hematoma (IMH), or penetrating aortic ulcer (PAU). Spiral CTA protocol consisted of an unenhanced acquisition and an arterial phase...
November 28, 2018: World Journal of Radiology
Richard G Kavanagh, John O'Grady, Brian W Carey, Owen J O'Connor, Michael M Maher
The role of radiologic imaging in the investigation of irritable bowel syndrome (IBS) remains a subject of debate and there is some evidence, from recent studies of utilization of imaging in IBS, which focused on associated costs and radiation exposure, that imaging is being used relatively widely in these patients. This review aims to assess current best evidence to accurately define the role of radiologic imaging in IBS patients. Primary and secondary literature searches were performed. Evidence suggests that the lack of "red flag" or alarm features in IBS patients should reassure the clinician that the diagnosis of IBS is correct and United States and United Kingdom guidelines recommend no radiologic imaging for IBS patients if alarm features are not present...
November 28, 2018: World Journal of Radiology
Caryl Elizabeth Richards, Stephen Dorman, Patricia John, Anthony Davies, Sharon Evans, Tishi Ninan, David Martin, Sriranj Kannoly, Gail Roberts-Davies, Mark Ramsey, Daniel Rhys Obaid
AIM: To determine the radiation dose and image quality in coronary computed tomography angiography (CCTA) using state-of-the-art dose reduction methods in unselected "real world" patients. METHODS: In this single-centre study, consecutive patients in sinus rhythm underwent CCTA for suspected coronary artery disease (CAD) using a 320-row detector CT scanner. All patients underwent the standard CT acquisition protocol at our institute (Morriston Hospital) a combination of dose saving advances including prospective electrocardiogram-gating, automated tube current modulation, tube voltage reduction, heart rate reduction, and the most recent novel adaptive iterative dose reconstruction 3D (AIDR3D) algorithm...
October 28, 2018: World Journal of Radiology
Audrey E Kaufman, Alison N Pruzan, Ching Hsu, Sarayu Ramachandran, Adam Jacobi, Indravadan Patel, Lee Schwocho, Michele F Mercuri, Zahi A Fayad, Venkatesh Mani
AIM: To evaluate reproducibility of pulmonary embolism (PE) clot volume quantification using computed tomography pulmonary angiogram (CTPA) in a multicenter setting. METHODS: This study was performed using anonymized data in conformance with HIPAA and IRB Regulations (March 2015-November 2016). Anonymized CTPA data was acquired from 23 scanners from 18 imaging centers using each site's standard PE protocol. Two independent analysts measured PE volumes using a semi-automated region-growing algorithm on an FDA-approved image analysis platform...
October 28, 2018: World Journal of Radiology
Hou-Dong Zuo, Xiao-Ming Zhang
Gastrointestinal tumors (GTs) are among the most common tumors of the digestive system and are among the leading causes of cancer death worldwide. Functional magnetic resonance imaging (MRI) is crucial for assessment of histopathological changes and therapeutic responses of GTs before and after chemotherapy and radiotherapy. A new functional MRI technique, intravoxel incoherent motion (IVIM), could reveal more detailed useful information regarding many diseases. Currently, IVIM is widely used for various tumors because the derived parameters (diffusion coefficient, D; pseudo-perfusion diffusion coefficient, D*; and perfusion fraction, f) are thought to be important surrogate imaging biomarkers for gaining insights into tissue physiology...
October 28, 2018: World Journal of Radiology
Yoonhee Han, Jae Hyun Kwon, Surin Park
AIM: To report 17-mo experience of femoral artery puncture site closure during angiographic procedures using ExoSeal vascular closure devices (VCDs). METHODS: Between November 2015 and April 2017, we performed 179 diagnostic and interventional angiographic procedures via a common femoral arterial access. The ExoSeal VCD was used at the puncture site to achieve hemostasis in 125 patients. We evaluated the technical and procedural success rates, the complications, and the factors affecting the hemostasis time of the ExoSeal VCDs...
September 28, 2018: World Journal of Radiology
El-Sayed H Ibrahim, Mason Runge, Jadranka Stojanovska, Prachi Agarwal, Maryam Ghadimi-Mahani, Anil Attili, Thomas Chenevert, Chiel den Harder, Frank Bogun
Late gadolinium enhancement (LGE) cardiovascular magnetic resonance (CMR) is the gold standard for imaging myocardial viability. An important application of LGE CMR is the assessment of the location and extent of the myocardial scar in patients with ventricular tachycardia (VT), which allows for more accurate identification of the ablation targets. However, a large percentage of patients with VT have cardiac implantable electronic devices (CIEDs), which is a relative contraindication for cardiac magnetic resonance imaging due to safety and image artifact concerns...
September 28, 2018: World Journal of Radiology
Fernando Ruiz Santiago, Pablo Tomás Muñoz, Patel Pryest, Alberto Martinez Martínez, Nicolás Prados Olleta
Among the many causes of forefoot pain, Morton's neuroma (MN) is often suspected, particularly in women, due to its high incidence. However, there remain controversies about its relationship with symptomatology and which diagnostic and treatment choices to choose. This article mainly focuses on the role of the various imaging methods and their abilities to support an accurate diagnosis of MN, ruling out other causes of forefoot pain, and as a way of providing targeted imaging-guided therapy for patients with MN...
September 28, 2018: World Journal of Radiology
Yu-Ting Wang, Xiong Yan, Hong Pu, Long-Lin Yin
AIM: To investigate the utility of renal diffusion tensor imaging (DTI) to detect early renal damage in patients with type 2 diabetes. METHODS: Twenty-six diabetic patients (12 with microalbuminuria (MAU), and 14 with normoalbuminuria) and fourteen healthy volunteers were prospectively included in this study. Renal DTI on 3.0 T MR was performed, and estimated glomerular filtration rate (eGFR) was recorded for each subject. Mean cortical and medullary fractional anisotropy (FA) values were calculated by placing multiple representative regions of interest...
August 28, 2018: World Journal of Radiology
Fabio Spanu, Luca Saba
Emery dreifuss muscular dystrophy (EDMD) is a rare genetic syndrome consisting of tendon retractions, progressive muscle atrophy and cardiac involvement. We report a case of an obese patient affected by the familial X-linked form in which a pericallosal lipoma was found during investigation for a suspected acute vasculopathy. To date, EDMD has never been associated with cerebral lipomas and the X-linked form was never considered to be involved in lipodystrophic syndromes or non-muscular conditions. Our case confirms the variable expressivity of the disease and suggests a possible role of Emerin in the intranuclear regulation of signals for adipocyte cell differentiation...
July 28, 2018: World Journal of Radiology
Erkan Gokce, Murat Beyhan
AIM: To evaluate radiological imaging findings of patients who had been found to have pineal cyst (PC) in brain magnetic resonance imaging (MRI). METHODS: A total of 9546 patients who had brain MRI examination in March 2010-January 2018 period were studied. Fifty-six patients (44 female and 12 male) found to have PC were evaluated. Eighteen of the patients had had follow-up examinations of 2-94 mo (mean 30.50 ± 28.83). PC dimensions and volume, radiological imaging features (signal intensities, contours, internal septation-loculation and contrast-enhancement features) and natural history in cases who had been followed-up were evaluated by two radiologists...
July 28, 2018: World Journal of Radiology
Nanae Tsuchiya, Edwin Jr van Beek, Yoshiharu Ohno, Hiroto Hatabu, Hans-Ulrich Kauczor, Andrew Swift, Jens Vogel-Claussen, Jürgen Biederer, James Wild, Mark O Wielpütz, Mark L Schiebler
Pulmonary contrast enhanced magnetic resonance angiography (CE-MRA) is useful for the primary diagnosis of pulmonary embolism (PE). Many sites have chosen not to use CE-MRA as a first line of diagnostic tool for PE because of the speed and higher efficacy of computerized tomographic angiography (CTA). In this review, we discuss the strengths and weaknesses of CE-MRA and the appropriate imaging scenarios for the primary diagnosis of PE derived from our unique multi-institutional experience in this area. The optimal patient for this test has a low to intermediate suspicion for PE based on clinical decision rules...
June 28, 2018: World Journal of Radiology
Aldo Fischetti, Jeries P Zawaideh, Davide Orlandi, Stefano Belfiore, Enzo SIlvestri
Tears of peroneus brevis tendon represent a cause of underdiagnosed lateral ankle pain and instability. The typical clinical presentation is retro-malleolar pain, in some cases associated with palpable swelling around the fibular malleolus, pain during activities and difficulty in walking. We present a case of peroneus brevis split lesion with superior peroneal retinaculum avulsion in a young athlete who referred to the emergency ward of our hospital for left ankle pain after an inversion injury. An early diagnosis allowed treating the injury and promptly resuming sport activity, after rehabilitation training...
May 28, 2018: World Journal of Radiology
Ahmet Mesrur Halefoglu, David Mark Yousem
Susceptibility weighted imaging (SWI) is a recently developed magnetic resonance imaging (MRI) technique that is increasingly being used to narrow the differential diagnosis of many neurologic disorders. It exploits the magnetic susceptibility differences of various compounds including deoxygenated blood, blood products, iron and calcium, thus enabling a new source of contrast in MR. In this review, we illustrate its basic clinical applications in neuroimaging. SWI is based on a fully velocity-compensated, high-resolution, three dimensional gradient-echo sequence using magnitude and phase images either separately or in combination with each other, in order to characterize brain tissue...
April 28, 2018: World Journal of Radiology
Audrey E Kaufman, Alison N Pruzan, Ching Hsu, Sarayu Ramachandran, Adam Jacobi, Zahi A Fayad, Venkatesh Mani
AIM: To examine effects of computed tomography (CT) image acquisition/reconstruction parameters on clot volume quantification in vitro for research method validation purposes. METHODS: This study was performed in conformance with HIPAA and IRB Regulations (March 2015-November 2016). A ten blood clot phantom was designed and scanned on a dual-energy CT scanner (SOMATOM Force, Siemens Healthcare GmBH, Erlangen, Germany) with varying pitch, iterative reconstruction, energy level and slice thickness...
March 28, 2018: World Journal of Radiology
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