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World Journal of Radiology

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https://www.readbyqxmd.com/read/30386498/low-radiation-and-high-image-quality-coronary-computed-tomography-angiography-in-real-world-unselected-patients
#1
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
https://www.readbyqxmd.com/read/30386497/reproducibility-of-thrombus-volume-quantification-in-multicenter-computed-tomography-pulmonary-angiography-studies
#2
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
https://www.readbyqxmd.com/read/30386496/could-intravoxel-incoherent-motion-diffusion-weighted-magnetic-resonance-imaging-be-feasible-and-beneficial-to-the-evaluation-of-gastrointestinal-tumors-histopathology-and-the-therapeutic-response
#3
EDITORIAL
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
https://www.readbyqxmd.com/read/30310545/korean-single-center-experience-with-femoral-access-closure-using-the-exoseal-device
#4
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
https://www.readbyqxmd.com/read/30310544/optimized-cardiac-magnetic-resonance-imaging-inversion-recovery-sequence-for-metal-artifact-reduction-and-accurate-myocardial-scar-assessment-in-patients-with-cardiac-implantable-electronic-devices
#5
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
https://www.readbyqxmd.com/read/30310543/role-of-imaging-methods-in-diagnosis-and-treatment-of-morton-s-neuroma
#6
REVIEW
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
https://www.readbyqxmd.com/read/30190800/-in-vivo-evaluation-of-early-renal-damage-in-type-2-diabetic-patients-on-3-0-t-mr-diffusion-tensor-imaging
#7
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
https://www.readbyqxmd.com/read/30079154/obesity-and-pericallosal-lipoma-in-x-linked-emery-dreifuss-muscular-dystrophy-a-case-report-does-emerin-play-a-role-in-adipocyte-differentiation
#8
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
https://www.readbyqxmd.com/read/30079153/evaluation-of-pineal-cysts-with-magnetic-resonance-imaging
#9
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
https://www.readbyqxmd.com/read/29988845/magnetic-resonance-angiography-for-the-primary-diagnosis-of-pulmonary-embolism-a-review-from-the-international-workshop-for-pulmonary-functional-imaging
#10
REVIEW
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
https://www.readbyqxmd.com/read/29876022/traumatic-peroneal-split-lesion-with-retinaculum-avulsion-diagnosis-and-post-operative-multymodality-imaging
#11
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
https://www.readbyqxmd.com/read/29849962/susceptibility-weighted-imaging-clinical-applications-and-future-directions
#12
REVIEW
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
https://www.readbyqxmd.com/read/29599936/effect-of-varying-computed-tomography-acquisition-and-reconstruction-parameters-on-semi-automated-clot-volume-quantification
#13
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
https://www.readbyqxmd.com/read/29507710/magnetic-resonance-imaging-ancillary-features-used-in-liver-imaging-reporting-and-data-system-an-illustrative-review
#14
REVIEW
David Campos-Correia, João Cruz, António P Matos, Filipa Figueiredo, Miguel Ramalho
Hepatocellular carcinoma (HCC) usually develops in the setting of chronic liver disease. In the adequate clinical context, both multiphasic contrast-enhanced CT and magnetic resonance imaging are non-invasive modalities that allow accurate diagnosis and staging of HCC, although the latter demonstrates greater sensitivity and specificity. Imaging criteria for HCC diagnosis rely on hemodynamic features such as hyperenhancement in the arterial phase and washout in the portal or equilibrium phase. However, imaging performance drops considerably for small (< 20 mm) nodules because their tendency to exhibit atypical enhancement patterns...
February 28, 2018: World Journal of Radiology
https://www.readbyqxmd.com/read/29403580/correction-to-asymmetrically-hypointense-veins-on-t2-w-imaging-and-susceptibility-weighted-imaging-in-ischemic-stroke-world-j-radiol-2013-5-4-156-165
#15
Ulf Jensen-Kondering, Ruwen Böhm
[This corrects the article on p. 4 in vol. 5, PMID: 23671751.].
January 28, 2018: World Journal of Radiology
https://www.readbyqxmd.com/read/29403579/computed-tomography-as-primary-postoperative-follow-up-after-laparoscopic-roux-en-y-gastric-bypass
#16
Tarik Delko, Diana Mattiello, Thomas Koestler, Urs Zingg, Silke Potthast
AIM: To evaluate upper abdominal computed tomography (CT) scan as primary follow-up after laparoscopic Roux-en-Y gastric bypass (LRYGB). METHODS: This prospective study was approved by the Ethical Committee of the State of Zurich, and informed consent was obtained from all patients. Sixty-one patients who underwent LRYGB received upper abdominal CT on postoperative day 1, with the following scan parameters: 0.6 mm collimation, 1.2 mm pitch, CareKV with reference 120 mAs and 120 kV, and 0...
January 28, 2018: World Journal of Radiology
https://www.readbyqxmd.com/read/29354211/case-of-victims-of-modern-imaging-technology-increased-information-noise-concealing-the-diagnosis
#17
Abhishek Mahajan, G V Santhoshkumar, Ameya Shirish Kawthalkar, Richa Vaish, Nilesh Sable, Supreeta Arya, Subhash Desai
We present a case of tubercular arthritis who underwent numerous unnecessary investigations what is known as "victims of modern imaging technology" or VOMIT. Today there is an exponential rise in the volume of the medical imaging, part of which is contributed by unnecessary and unjustified indications. We discuss about the untoward effects of the uninhibited and careless use of modern imaging modalities and possible ways to avoid. Skeletal manifestation of the tuberculosis is still common in the endemic countries like India...
December 28, 2017: World Journal of Radiology
https://www.readbyqxmd.com/read/29354210/aggressive-blood-pressure-treatment-of-hypertensive-intracerebral-hemorrhage-may-lead-to-global-cerebral-hypoperfusion-case-report-and-imaging-perspective
#18
Jose Gavito-Higuera, Rakesh Khatri, Ihtesham A Qureshi, Alberto Maud, Gustavo J Rodriguez
Hypoperfusion injury related to blood pressure decrease in acute hypertensive intracerebral hemorrhage continues to be a controversial topic. Aggressive treatment is provided with the intent to stop the ongoing bleeding. However, there may be additional factors, including autoregulation and increased intracranial pressure, that may limit this approach. We present here a case of acute hypertensive intracerebral hemorrhage, in which aggressive blood pressure management to levels within the normal range led to global cerebral ischemia within multiple border zones...
December 28, 2017: World Journal of Radiology
https://www.readbyqxmd.com/read/29354209/imaging-features-of-intrathoracic-complications-of-lung-transplantation-what-the-radiologists-need-to-know
#19
REVIEW
Elisa Chia, Simeon Niyi Babawale
Lung transplantation has been a method for treating end stage lung disease for decades. Despite improvements in the preoperative assessment of recipients and donors as well as improved surgical techniques, lung transplant recipients are still at a high risk of developing post-operative complications which tend to impact negatively the patients' outcome if not recognised early. The recognised complications post lung transplantation can be broadly categorised into acute and chronic complications. Recognising the radiological features of these complications has a significant positive impact on patients' survival post transplantation...
December 28, 2017: World Journal of Radiology
https://www.readbyqxmd.com/read/29354208/endovascular-treatment-of-pulmonary-embolism-selective-review-of-available-techniques
#20
REVIEW
John L Nosher, Arjun Patel, Sugeet Jagpal, Christopher Gribbin, Vyacheslav Gendel
Acute pulmonary embolism (PE) is the third most common cause of death in hospitalized patients. The development of sophisticated diagnostic and therapeutic modalities for PE, including endovascular therapy, affords a certain level of complexity to the treatment of patients with this important clinical entity. Furthermore, the lack of level I evidence for the safety and effectiveness of catheter directed therapy brings controversy to a promising treatment approach. In this review paper, we discuss the pathophysiology and clinical presentation of PE, review the medical and surgical treatment of the condition, and describe in detail the tools that are available for the endovascular therapy of PE, including mechanical thrombectomy, suction thrombectomy, and fibrinolytic therapy...
December 28, 2017: World Journal of Radiology
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