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World Journal of Radiology

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https://www.readbyqxmd.com/read/28298969/gastric-blunt-traumatic-injuries-a-computed-tomography-grading-classification
#1
Antonio Solazzo, Giulia Lassandro, Francesco Lassandro
AIM: To produce a radiological grading of gastric traumatic injuries. METHODS: In our study, we retrospectively analyzed 32 cases of blunt gastric traumatic injuries and compared computed tomography (CT) data with patients' surgical or medical development. In all cases, a basal phase was acquired, and an intravenous contrast material was administered via an antecubital venous catheter with acquisition in the venous phase (70-90 s). In addition, a further set of delayed scans was performed 4-5 min after the first scanning session, without supplementary intravenous contrast material, to identify or better define areas of active bleeding...
February 28, 2017: World Journal of Radiology
https://www.readbyqxmd.com/read/28298968/feasibility-of-imaging-superficial-palmar-arch-using-micro-ultrasound-7t-and-3t-magnetic-resonance-imaging
#2
Alison N Pruzan, Audrey E Kaufman, Claudia Calcagno, Yu Zhou, Zahi A Fayad, Venkatesh Mani
AIM: To demonstrate feasibility of vessel wall imaging of the superficial palmar arch using high frequency micro-ultrasound, 7T and 3T magnetic resonance imaging (MRI). METHODS: Four subjects (ages 22-50 years) were scanned on a micro-ultrasound system with a 45-MHz transducer (Vevo 2100, VisualSonics). Subjects' hands were then imaged on a 3T clinical MR scanner (Siemens Biograph MMR) using an 8-channel special purpose phased array carotid coil. Lastly, subjects' hands were imaged on a 7T clinical MR scanner (Siemens Magnetom 7T Whole Body Scanner) using a custom built 8-channel transmit receive carotid coil...
February 28, 2017: World Journal of Radiology
https://www.readbyqxmd.com/read/28298967/magnetic-resonance-imaging-in-the-assessment-of-brain-involvement-in-alcoholic-and-nonalcoholic-wernicke-s-encephalopathy
#3
Gianvincenzo Sparacia, Andrea Anastasi, Claudia Speciale, Francesco Agnello, Aurelia Banco
AIM: To present the typical and atypical magnetic resonance (MR) imaging findings of alcoholic and non-alcoholic Wernicke's encephalopathy. METHODS: This study included 7 patients with Wernicke's encephalopathy (2 men, 5 women; mean age, 52.3 years) that underwent brain MR examination between January 2012 and March 2016 in a single institution. Three patients were alcoholics and 4 patients were non-alcoholics. MR protocol included a T2-weighted sequence, a fluid attenuation inversion recovery (FLAIR) sequence, a diffusion-weighted sequence (b = 0 and 1000 s/mm(2)), and a contrast-enhanced MR sequence...
February 28, 2017: World Journal of Radiology
https://www.readbyqxmd.com/read/28298966/radiation-dose-enhancement-in-skin-therapy-with-nanoparticle-addition-a-monte-carlo-study-on-kilovoltage-photon-and-megavoltage-electron-beams
#4
Xiao J Zheng, James C L Chow
AIM: To investigated the dose enhancement due to the incorporation of nanoparticles in skin therapy using the kilovoltage (kV) photon and megavoltage (MV) electron beams. Monte Carlo simulations were used to predict the dose enhancement when different types and concentrations of nanoparticles were added to skin target layers of varying thickness. METHODS: Clinical kV photon beams (105 and 220 kVp) and MV electron beams (4 and 6 MeV), produced by a Gulmay D3225 orthovoltage unit and a Varian 21 EX linear accelerator, were simulated using the EGSnrc Monte Carlo code...
February 28, 2017: World Journal of Radiology
https://www.readbyqxmd.com/read/28298965/radiology-education-in-europe-analysis-of-results-from-22-european-countries
#5
Bhavya Rehani, Yi C Zhang, Madan M Rehani, András Palkó, Lawrence Lau, Miriam N Mikhail Lette, William P Dillon
AIM: To assess the state of radiology education across Europe by means of a survey study. METHODS: A comprehensive 23-item radiology survey was distributed via email to the International Society of Radiology members, national radiological societies, radiologists and medical physicists. Reminders to complete the survey were sent and the results were analyzed over a period of 4 mo (January-April 2016). Survey questions include length of medical school and residency training; availability of fellowship and subspecialty training; number of residency programs in each country; accreditation pathways; research training; and medical physics education...
February 28, 2017: World Journal of Radiology
https://www.readbyqxmd.com/read/28298964/magnetic-resonance-enterography-in-crohn-s-disease-how-we-do-it-and-common-imaging-findings
#6
REVIEW
Annalisa Mantarro, Paola Scalise, Elisa Guidi, Emanuele Neri
Crohn's disease (CD) is a chronic inflammatory disease of the gastrointestinal tract, with unpredictable clinical course by phases of relapses alternating with other of quiescence. The etiology is multifactorial and is still not completely known; globally the westernization of lifestyle is causing an increasing incidence of CD, with peak age of 20-30 years. The diagnostic workup begins with the evaluation of the clinical history, physical examination and laboratory tests. However, the clinical assessment is subjected interobserver variability and, occasionally, the symptoms of acute and chronic inflammation may be indistinguishable...
February 28, 2017: World Journal of Radiology
https://www.readbyqxmd.com/read/28298963/potential-role-of-imaging-in-assessing-harmful-effects-on-spermatogenesis-in-adult-testes-with-varicocele
#7
REVIEW
Athina C Tsili, Olga N Xiropotamou, Anastasios Sylakos, Vasilios Maliakas, Nikolaos Sofikitis, Maria I Argyropoulou
Varicocele is characterized by an abnormal dilatation and retrograde blood flow in the spermatic veins. Varicocele is the leading correctable cause of male infertility. Although it is highly prevalent in infertile men, it is also observed in individuals with normal fertility. Determining which men are negatively affected by varicocele would enable clinicians to better select those men who will benefit from treatment. To assess the functional status of the testes in men with varicocele, color Doppler sonographic parameters were evaluated...
February 28, 2017: World Journal of Radiology
https://www.readbyqxmd.com/read/28298962/evaluation-of-response-to-immune-checkpoint-inhibitors-is-there-a-role-for-positron-emission-tomography
#8
EDITORIAL
Matteo Bauckneht, Roberta Piva, Gianmario Sambuceti, Francesco Grossi, Silvia Morbelli
Strategies targeting intracellular negative regulators such as immune checkpoint inhibitors (ICPIs) have demonstrated significant antitumor activity across a wide range of solid tumors. In the clinical practice, the radiological effect of immunotherapeutic agents has raised several more relevant and complex challenges for the determination of their imaging-based response at single patient level. Accordingly, it has been suggested that the conventional Response Evaluation Criteria in Solid Tumors assessment alone, based on dimensional evaluation provided by computed tomography (CT), tends to underestimate the benefit of ICPIs at least in a subset of patients, supporting the need of immune-related response criteria...
February 28, 2017: World Journal of Radiology
https://www.readbyqxmd.com/read/28144403/multimodality-functional-imaging-using-dw-mri-and-18-f-fdg-pet-ct-during-radiation-therapy-for-human-papillomavirus-negative-head-and-neck-squamous-cell-carcinoma-meixoeiro-hospital-of-vigo-experience
#9
David Aramburu Núñez, Antonio Lopez Medina, Moisés Mera Iglesias, Francisco Salvador Gomez, Abhay Dave, Vaios Hatzoglou, Ramesh Paudyal, Alfonso Calzado, Joseph O Deasy, Amita Shukla-Dave, Victor M Muñoz
AIM: To noninvasively investigate tumor cellularity measured using diffusion-weighted magnetic resonance imaging (DW-MRI) and glucose metabolism measured by (18)F-labeled fluorodeoxyglucose positron emission tomography/computed tomography ((18)F-FDG-PET/CT) during radiation therapy (RT) for human papillomavirus negative (HPV-) head and neck squamous cell carcinoma (HNSCC). METHODS: In this prospective study, 6 HPV- HNSCC patients underwent a total of 34 multimodality imaging examinations DW-MRI at 1...
January 28, 2017: World Journal of Radiology
https://www.readbyqxmd.com/read/28144402/impact-of-contrast-enhanced-ultrasound-in-patients-with-renal-function-impairment
#10
Rossano Girometti, Tiziano Stocca, Elena Serena, Antonio Granata, Michele Bertolotto
AIM: To investigate the role of contrast enhanced ultrasound (CEUS) in evaluating patients with renal function impairment (RFI) showing: (1) acute renal failure (ARF) of suspicious vascular origin; or (2) suspicious renal lesions. METHODS: We retrospectively evaluated patients addressed to CEUS over an eight years period to rule-out vascular causes of ARF (first group of 50 subjects) or assess previously found suspicious renal lesions (second group of 41 subjects with acute or chronic RFI)...
January 28, 2017: World Journal of Radiology
https://www.readbyqxmd.com/read/28144401/functional-magnetic-resonance-imaging-and-the-brain-a-brief-review
#11
REVIEW
Maggie S M Chow, Sharon L Wu, Sarah E Webb, Katie Gluskin, D T Yew
Functional magnetic resonance imaging (fMRI) is employed in many behavior analysis studies, with blood oxygen level dependent- (BOLD-) contrast imaging being the main method used to generate images. The use of BOLD-contrast imaging in fMRI has been refined over the years, for example, the inclusion of a spin echo pulse and increased magnetic strength were shown to produce better recorded images. Taking careful precautions to control variables during measurement, comparisons between different specimen groups can be illustrated by fMRI imaging using both quantitative and qualitative methods...
January 28, 2017: World Journal of Radiology
https://www.readbyqxmd.com/read/28144400/cutting-edge-clinical-applications-in-cardiovascular-magnetic-resonance
#12
EDITORIAL
Carlo N De Cecco, Giuseppe Muscogiuri, Akos Varga-Szemes, U Joseph Schoepf
Today, the use of cardiovascular magnetic resonance (CMR) is widespread in clinical practice. The increased need to evaluate of subtle myocardial changes, coronary artery anatomy, and hemodynamic assessment has prompted the development of novel CMR techniques including T1 and T2 mapping, non-contrast angiography and four dimensional (4D) flow. T1 mapping is suitable for diagnosing pathologies affecting extracellular volume such as myocarditis, diffuse myocardial fibrosis and amyloidosis, and is a promising diagnostic tool for patients with iron overload and Fabry disease...
January 28, 2017: World Journal of Radiology
https://www.readbyqxmd.com/read/28070246/commentary-on-evaluation-of-variations-in-sinonasal-region-with-computed-tomography
#13
Can A Çağıcı
This letter is a commentary on the article titled "Evaluation of variations in sinonasal region with computed tomography", published in the January 2016 issue of World Journal of Radiology. The authors definition of the secondary middle turbinate is incorrect. The authors stated that the secondary middle turbinate is an accessory turbinate that is seen between the superior and middle turbinates. It should originate from the middle meatus posterosuperior to the ethmoid infundibulum.
December 28, 2016: World Journal of Radiology
https://www.readbyqxmd.com/read/28070245/horizontally-root-fractured-teeth-with-pulpal-vitality-two-case-reports
#14
Luciano Silva, Pâmella Álvares, José Alcides Arruda, Leni Verônica Silva, Cleomar Rodrigues, Ana Paula Veras Sobral, Marcia Silveira
This case study reports the successful outcome of horizontal root fractures of two different patients, which took place in permanent incisors. Report 1 describes a case of a 29-year-old patient who suffered a mandibular trauma affecting mainly the lower central incisors, caused by a car accident. A panoramic radiograph was taken right after the accident and showed a horizontal root fracture in the middle third of tooth 42, which went untreated. Report 2 illustrates a case of a 17-year-old male patient who searched for orthodontic therapy and the periapical radiograph showed horizontal root fracture in tooth 11 caused by a previous trauma, which went untreated as well...
December 28, 2016: World Journal of Radiology
https://www.readbyqxmd.com/read/28070244/assessment-of-fetus-during-second-trimester-ultrasonography-using-hdlive-software-what-is-its-real-application-in-the-obstetrics-clinical-practice
#15
Gabriele Tonni, Gianpaolo Grisolia, Eduardo Félix Santana, Edward Araujo Júnior
AIM: To show imaging results from application of four-dimensional (4D) ultrasound lightening technique (HDlive™) in clinical obstetrics practice. METHODS: Normal and abnormal fetuses at second and third trimester of pregnancy undergoing routine scan with 4D HDlive™ (5DUS) in the rendering mode are described. Realistic features of fetal structures were provided by 5DUS in the rendering mode. Normal anatomy as well as pathology like cleft lip, hypoplastic face, micrognathia, low-set ears, corpus callosum, arthrogryposis, aortic arch, left congenital diaphragmatic hernia are highlighted in this study...
December 28, 2016: World Journal of Radiology
https://www.readbyqxmd.com/read/28070243/value-of-serial-magnetic-resonance-imaging-in-the-assessment-of-brain-metastases-volume-control-during-stereotactic-radiosurgery
#16
Gianvincenzo Sparacia, Francesco Agnello, Aurelia Banco, Francesco Bencivinni, Andrea Anastasi, Giovanna Giordano, Adele Taibbi, Massimo Galia, Tommaso Vincenzo Bartolotta
AIM: To evaluate brain metastases volume control capabilities of stereotactic radiosurgery (SRS) through serial magnetic resonance (MR) imaging follow-up. METHODS: MR examinations of 54 brain metastases in 31 patients before and after SRS were reviewed. Patients were included in this study if they had a pre-treatment MR examination and serial follow-up MR examinations at 6 wk, 9 wk, 12 wk, and 12 mo after SRS. The metastasis volume change was categorized at each follow-up as increased (> 20% of the initial volume), stable (± 20% of the initial volume) or decreased (< 20% of the initial volume)...
December 28, 2016: World Journal of Radiology
https://www.readbyqxmd.com/read/28070242/computed-tomography-and-patient-risk-facts-perceptions-and-uncertainties
#17
REVIEW
Stephen P Power, Fiachra Moloney, Maria Twomey, Karl James, Owen J O'Connor, Michael M Maher
Since its introduction in the 1970s, computed tomography (CT) has revolutionized diagnostic decision-making. One of the major concerns associated with the widespread use of CT is the associated increased radiation exposure incurred by patients. The link between ionizing radiation and the subsequent development of neoplasia has been largely based on extrapolating data from studies of survivors of the atomic bombs dropped in Japan in 1945 and on assessments of the increased relative risk of neoplasia in those occupationally exposed to radiation within the nuclear industry...
December 28, 2016: World Journal of Radiology
https://www.readbyqxmd.com/read/27928471/radiological-imaging-findings-of-scheuermann-disease
#18
Erkan Gokce, Murat Beyhan
AIM: To find accompanying anomalies of typical and atypical Scheuermann's disease (SD) is reported in the present study. METHODS: Study included 20 patients (16 men and 4 women) who had radiological imaging radiography, magnetic resonance imaging (MRI) and computed tomography, if available, due to back pain, curved back and low back pain in November 2011-February 2016 period. Patients were categorized into typical and atypical patterns based on the region involved...
November 28, 2016: World Journal of Radiology
https://www.readbyqxmd.com/read/27928470/co2bold-assessment-of-moyamoya-syndrome-validation-with-single-photon-emission-computed-tomography-and-positron-emission-tomography-imaging
#19
Alain Pellaton, Philippe Bijlenga, Laurie Bouchez, Victor Cuvinciuc, Isabelle Barnaure, Valentina Garibotto, Karl-Olof Lövblad, Sven Haller
AIM: To compare the assessment of cerebrovascular reserve (CVR) using CO2BOLD magnetic resonance imaging (MRI) vs positron emission tomography (PET) and single photon emission computed tomography (SPECT) as reference standard. METHODS: Ten consecutive patients (8 women, mean age of 41 ± 26 years) with moyamoya syndrome underwent 14 pre-surgical evaluations for external-internal carotid artery bypass surgery. CVR was assessed using CO2BOLD and PET (4)/SPECT (11) with a maximum interval of 36 d, and evaluated by two experienced neuroradiologists...
November 28, 2016: World Journal of Radiology
https://www.readbyqxmd.com/read/27928469/mechanisms-underlying-18-f-fluorodeoxyglucose-accumulation-in-colorectal-cancer
#20
REVIEW
Kenji Kawada, Masayoshi Iwamoto, Yoshiharu Sakai
Positron emission tomography (PET) with (18)F-fluorodeoxyglucose (FDG) is a diagnostic tool to evaluate metabolic activity by measuring accumulation of FDG, an analogue of glucose, and has been widely used for detecting small tumors, monitoring treatment response and predicting patients' prognosis in a variety of cancers. However, the molecular mechanism of FDG accumulation into tumors remains to be investigated. It is well-known that most cancers are metabolically active with elevated glucose metabolism, a phenomenon known as the Warburg effect...
November 28, 2016: World Journal of Radiology
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