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British Journal of Radiology

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https://www.readbyqxmd.com/read/27897064/diagnosis-of-dementia-with-lewy-bodies-can-123-i-imp-and-123-i-mibg-scintigraphy-yield-new-core-features
#1
Fumi Sakamoto, Shinya Shiraishi, Noriko Tsuda, Mamoru Hashimoto, Seiji Tomiguchi, Manabu Ikeda, Yasuyuki Yamashita
OBJECTIVE: Since the clinical symptoms of different types of dementia frequently overlap, especially in the earlier stages at onset, it is difficult to distinguish dementias with Lewy bodies (DLB) from other neurodegenerative dementias based on their clinical manifestations alone. Nuclear medicine imaging has been reported as a high-value index for the objective evaluation and diagnosis of DLB. The aim of this study was to evaluate whether nuclear medicine imaging findings may yield core features to be added to the diagnosis of DLB...
November 29, 2016: British Journal of Radiology
https://www.readbyqxmd.com/read/27897060/potential-for-adaptive-dose-escalation-in-radiotherapy-for-patients-with-locally-advanced-non-small-cell-lung-cancer-in-a-low-mid-income-setting
#2
Sushma Agrawal, Sunil Kumar, Anil Kumar Maurya
OBJECTIVE: To evaluate the effect of tumour volume regression on adaptive treatment planning, reduction in doses to organs at risk (OAR) and dose escalation. METHODS: 20 patients undergoing radical chemoradiotherapy were imaged in fifth week of radiotherapy (CT_45) to evaluate differences in tumour volume regression between concurrent (CONC) and sequential chemoradiotherapy (SEQ). Replanning was done on CT_45 in those with >20% regression (n=10) and evaluated for change in target coverage indices (coverage index [CI], external volume index [EI]) and doses to OAR [mean lung dose, V20 and V5 of whole and ipsilateral lung (MLDWL, V20WL, V5WL, MLDIL, V20IL, V5IL), mean esophagus dose, V50 esophagus and maximum spinal cord doses]...
November 29, 2016: British Journal of Radiology
https://www.readbyqxmd.com/read/27897034/meditative-music-listening-to-reduce-state-anxiety-in-patients-during-the-uptake-phase-before-positron-emission-tomography-pet-scans
#3
Wen-Li Lee, Huei-Chuan Sung, Shu-Hsin Liu, Shu-Min Chang
OBJECTIVE: This study examines the effects of meditative music listening on state anxiety and heart rate variability (HRV) of patients during uptake phase before PET scans. METHODS: A two-group randomized experimental design was used. Eligible patients were randomly assigned to either experimental or control group. All patients received baseline assessments of state anxiety using Spielberger Trait Anxiety Inventory (STAI-S) and HRV before receiving an intravenous injection of radiopharmaceutical fludeoxyglucose in uptake room...
November 29, 2016: British Journal of Radiology
https://www.readbyqxmd.com/read/27897030/influence-of-cardiac-motion-on-stent-lumen-visualization-in-third-generation-dual-source-ct-employing-a-pulsatile-heart-model
#4
Nils Petri, Tobias Gassenmaier, Thomas Allmendinger, Thomas Flohr, Wolfram Voelker, Thorsten A Bley
OBJECTIVE: To detect an in-stent restenosis an invasive coronary angiography is commonly performed. Due to the risk associated to this procedure, a non-invasive method to detect or exclude an in-stent restenosis is desirable. The purpose of this study was to evaluate the influence of cardiac motion on stent lumen visibility in a third-generation dual-source CT scanner (SOMATOM Force, Siemens Healthcare, Forchheim, Germany), employing a pulsatile heart model (CoroSim by Mecora). METHODS: Thirteen coronary stents with a diameter of 3...
November 29, 2016: British Journal of Radiology
https://www.readbyqxmd.com/read/27897029/a-method-for-evaluating-the-performance-of-computer-aided-detection-of-pulmonary-nodules-in-lung-cancer-ct-screening-detection-limit-for-nodule-size-and-density
#5
Hajime Kobayashi, Masaki Ohkubo, Akihiro Narita, Janaka C Marasinghe, Kohei Murao, Toru Matsumoto, Shusuke Sone, Shinichi Wada
OBJECTIVES: We propose the application of virtual nodules to evaluate the performance of computer-aided detection (CAD) of lung nodules in cancer screening using low-dose computed tomography (CT). METHODS: The virtual nodules were generated based on the spatial resolution measured for a CT system used in an institution providing cancer screening and were fused into clinical lung images obtained at that institution, allowing site-specificity. First, we validated the virtual nodules as an alternative to artificial nodules inserted into a phantom...
November 29, 2016: British Journal of Radiology
https://www.readbyqxmd.com/read/27885858/a-systematic-review-of-outcomes-following-stereotactic-ablative-radiotherapy-in-the-treatment-of-early-stage-primary-lung-cancer
#6
Patrick Murray, Kevin Franks, Gerard G Hanna
Stereotactic ablative body radiotherapy (SABR) describes a radiotherapy technique where high doses of radiation are precisely delivered to an extra-cranial target within the body, using either a single fraction of radiotherapy or using multiple small number of fractions. SABR has now become the standard of care treatment for patients with early stage NSCLC for whom surgery is not appropriate. This systematic review considers the evidence supporting the use of SABR in early stage NSCLC, reported toxicity rates, the use of SABR in centrally located NSCLC, the use of SABR as salvage therapy following surgery or radiotherapy and future potential drug combinations with SABR...
November 25, 2016: British Journal of Radiology
https://www.readbyqxmd.com/read/27885857/dosimetric-trade-offs-in-breast-treatment-with-vmat-technique
#7
Antonella Fogliata, Jan Seppälä, Giacomo Reggiori, Francesca Lobefalo, Valentina Palumbo, Fiorenza De Rose, Davide Franceschini, Marta Scorsetti, Luca Cozzi
OBJECTIVES: Breast planning with volumetric modulated arc therapy (VMAT) has been explored, especially for left sided breast treatments, with the primary intent of lowering the heart dose and improving target dose homogeneity. As a trade-off, larger healthy tissue volumes would receive low dose levels, with the potential risk of increasing late toxicities and secondary cancer induction, although no clinical data are today available to confirm the risk level. Scope of this work is to explore the dosimetric trade-offs using two different VMAT planning...
November 25, 2016: British Journal of Radiology
https://www.readbyqxmd.com/read/27885856/ankle-impingement-syndromes-an-imaging-review
#8
Zachary T Berman, Monica Tafur, Sonya S Ahmed, Brady K Huang, Eric Y Chang
Ankle impingement syndromes encompass a broad spectrum of post-traumatic and chronic degenerative changes that present with pain on specific movements about the ankle joint. Both amateur and professional athletes are disproportionately affected by these conditions, and while conservative measures can potentially treat an impingement syndrome, definitive therapy often is alleviated surgically. Imaging (including conventional radiography, ultrasound, computed tomography, and magnetic resonance imaging) plays an invaluable role in the diagnosis and pre-surgical work-up...
November 25, 2016: British Journal of Radiology
https://www.readbyqxmd.com/read/27885855/frameless-stereotactic-volumetric-modulated-arc-radiotherapy-of-brachial-plexus-tumours-in-dogs-10-cases
#9
Mario Dolera, Luca Malfassi, Cristina Bianchi, Nancy Carrara, Sara Finesso, Silvia Marcarini, Giovanni Mazza, Simone Pavesi, Massimo Sala, Gaetano Urso
OBJECTIVES: Treatment of canine peripheral nerve sheath tumours (PNSTs) is challenging, and prognosis after surgical resection is considered poor. The aim of this study was to evaluate the feasibility and the effectiveness of stereotactic radiotherapy of these tumours. METHODS: Ten dogs with clinical symptoms and MRI findings consistent with PNSTs of the brachial plexus, branches and nerve roots were treated with LINAC-based volumetric modulated arc radiotherapy (VMAT) with a dose of 35 Gy/5 fractions...
November 25, 2016: British Journal of Radiology
https://www.readbyqxmd.com/read/27885854/gossypibomas-a-surgeon-s-nightmare-patient-demographics-risk-factors-imaging-and-how-we-can-prevent-it
#10
Rishi Philip Mathew, Binston Thomas, Ram Shenoy Basti, Hadihally B Suresh
OBJECTIVES: Gossypibomas are cottinoid matrix left behind following surgery. Due to the legal issues associated with it, very few literature studies are available online, most of them being case reports. The purpose of our study was to identify the patient demographics, risk factors and imaging features. METHODS: Six surgically identified and histopathologically confirmed cases of gossypibomas recorded over a period 7 years from a single tertiary institution were retrospectively evaluated for patient demographics (sex, age, BMI), type of surgery, and duration from time of surgery to onset of symptoms...
November 25, 2016: British Journal of Radiology
https://www.readbyqxmd.com/read/27885853/nomogram-for-radiation-induced-hypothyroidism-prediction-in-nasopharyngeal-carcinoma-after-treatment
#11
Ren Luo, Mei Li, Zhining Yang, Yizhou Zhan, Baotian Huang, Jiayang Lu, Zhenxi Xu, Zhixiong Lin
OBJECTIVE: The aim of this study was to develop a nomogram for radiation-induced hypothyroidism (RHT) prediction. METHODS: We collected data from 164 NPC patients in our previous prospective study. Biochemical hypothyroidism (HT) was defined as a serum thyroid stimulating hormone (TSH) level greater than the normal value. We collected both clinical and dose-volume factors. A univariate Cox regression analysis was performed to identify RHT risk factors. Optimal predictors were selected according to the least absolute shrinkage and selection operator (LASSO)...
November 25, 2016: British Journal of Radiology
https://www.readbyqxmd.com/read/27885851/is-antiinflammatory-radiotherapy-an-effective-treatment-in-trochanteritis
#12
Izaskun Valduvieco, Albert Biete, Luis Alfonso Moreno, Xavier Gallart, Angels Rovirosa, Jordi Saez, Carlos Plana, Pilar Peris
OBJECTIVE: To evaluate the analgesic efficacy of low-dose radiotherapy in refractory cases of trochanteritis. METHODS: We evaluated a total of 60 consecutive patients who received low-dose radiotherapy to achieve an antiinflammatory and analgesic effect for recurrent trochanteritis following scarce response to conventional therapy. All patients were evaluated at baseline (prior to radiotherapy) and at 1 and 4 months after radiotherapy and then yearly thereafter for pain assessment using a visual analog scale and to determine the administration of analgesic treatment...
November 25, 2016: British Journal of Radiology
https://www.readbyqxmd.com/read/27885850/detour-sign-in-the-diagnosis-of-subluxation-of-the-long-head-of-the-biceps-tendon-with-arthroscopic-correlation
#13
Eun Kyung Khil, Jang Gyu Cha, Ji Sook Yi, Hyun-Joo Kim, Kyung Dae Min, Young Cheol Yoon, Chan Hong Jeon
OBJECTIVES: To determine whether detection of the detour sign via magnetic resonance imaging (MRI) indicates of subluxation of the long head of the biceps tendon (SLBT) in the shoulder joint and to investigate the association of SLBT with the degeneration of the long head of the biceps tendon (LBT) and rotator cuff tears. METHODS: This retrospective study included 65 patients with shoulder pain who underwent shoulder MRI and arthroscopic surgery. When axial images revealed that the LBT was displaced over the inner rim of the bicipital groove with some remaining contact with the groove (criterion 1), or demonstrated a "detour sign" of the biceps tendon (criterion 2), the lesion was diagnosed an SLBT...
November 25, 2016: British Journal of Radiology
https://www.readbyqxmd.com/read/27885837/imaging-findings-of-flexion-type-of-hangman-s-fracture-an-attempt-for-a-more-objective-evaluation-with-newly-introduced-scoring-system
#14
Sawsan Taif, Venugopal K Menon, Asif Alrawi, Ahmed Sameer Alnuaimi, Kishore Kumar Mollahalli, Khalifa Al Ghafri
OBJECTIVE: To identify the flexion type of hangman's fracture on imaging studies. METHODS: Thirty-eight cases of Hangman's fractures were retrospectively studied and categorised into flexion and non-flexion groups. Plain radiograph, computed tomography (CT) and magnetic resonance imaging (MRI) of these patients were evaluated, 13 radiological parameters that might define flexion injuries were measured. The data was statistically analysed to identify good criteria and to rank them according to their importance in predicting flexion...
November 25, 2016: British Journal of Radiology
https://www.readbyqxmd.com/read/27885836/texture-analysis-of-medical-images-for-radiotherapy-applications
#15
Elisa Scalco, Giovanna Rizzo
The high-throughput extraction of quantitative information from medical images, known as radiomics, has grown in interest due to the current necessity of quantitatively characterise tumour heterogeneity. In this context, texture analysis, consisting of a variety of mathematical techniques able to describe the grey-level patterns of an image, plays an important role in assessing the spatial organisation of different tissues and organs. For these reasons, the potentiality of texture analysis in the context of radiotherapy has been widely investigated in several studies, especially for the prediction of the treatment response of tumour and normal tissues...
November 25, 2016: British Journal of Radiology
https://www.readbyqxmd.com/read/27858468/a-qualitative-comparison-of-arterial-spin-labelling-and-dynamic-susceptibility-contrast-mri-in-52-children-with-a-range-of-neurological-conditions
#16
Paul A Armitage, Nicholas Skipper, Daniel J A Connolly, Paul D Griffiths
OBJECTIVE: To assess the usefulness of Arterial Spin Labelling (ASL) compared with Dynamic Susceptibility Contrast (DSC) perfusion MRI for typical paediatric neuroimaging applications at 1.5 Tesla. METHODS: 52 children (age: 4 months - 17 years) with a variety of neurological disorders were scanned using 3D ASL and Echo Planar Imaging DSC sequences. All images were reviewed by an experienced neuroradiologist, image quality recorded as 'good', 'acceptable', or 'poor' and diagnostic value noted as being 'greater', 'similar' or 'less' for ASL when compared to DSC...
November 18, 2016: British Journal of Radiology
https://www.readbyqxmd.com/read/27845567/spect-ct-an-update-on-technological-developments-and-clinical-applications
#17
Michael Ljungberg, P Hendrik Pretorius
Functional nuclear medicine imaging with Single-Photon Emission Computed Tomography (SPECT) in combination with anatomical Computed Tomography (CT) has been commercially available since the beginning of this century. The combination of the two modalities has improved both sensitivity and specificity of many clinical applications and CT in conjunction with SPECT allows for spatial overlay of the SPECT data on good anatomy images. Introduction of diagnostic CT units as part of the SPECT/CT system has also potentially allowed for a more cost-efficient use of the equipment...
November 15, 2016: British Journal of Radiology
https://www.readbyqxmd.com/read/27845566/the-potential-predictive-value-of-mri-and-pet-ct-in-mucinous-and-nonmucinous-rectal-cancer-to-identify-patients-at-high-risk-of-metastatic-disease
#18
Brunella Barbaro, Lucia Leccisotti, Fabio M Vecchio, Marialuisa Di Matteo, Teresa Serra, Marco Salsano, Andrea Poscia, Claudio Coco, Roberto Persiani, Sergio Alfieri, Maria Antonietta Gambacorta, Vincenzo Valentini, Alessandro Giordano, Lorenzo Bonomo
OBJECTIVES: To correlate imaging parameters from baseline magnetic resonance imaging (MRI)-diffusion-weighted imaging (DWI) and -2-fluoro-2-deoxy-D-glucose (FDG) positron emission tomography-computed tomography (PET-CT) with synchronous and metachronous metastases in mucinous (MC) and nonmucinous (NMC) rectal cancer. METHODS: 111 patients with extraperitoneal locally advanced rectal cancer who underwent pelvic MRI, DWI and FDG PET-CT were stratified into MC (n=23) and NMC (n=88)...
November 15, 2016: British Journal of Radiology
https://www.readbyqxmd.com/read/27845559/evaluating-the-impact-of-scan-settings-on-automatic-tube-current-modulation-in-ct-using-a-novel-phantom
#19
Deborah Merzan, Patrik Nowik, Gavin Poludniowski, Robert Bujila
OBJECTIVES: The aim of this study was to make a comprehensive evaluation of how variable scan settings can affect the performance of the automatic tube current modulation (ATCM) on recent CT scanners from the four major manufacturers. METHODS: A phantom was designed and manufactured for the purpose of evaluating ATCM. The phantom was scanned with four categories of systematically varied settings (scan projection radiograph, technique and reconstruction parameters and phantom miscentering)...
November 15, 2016: British Journal of Radiology
https://www.readbyqxmd.com/read/27826994/diagnostic-efficacy-of-single-pass-abdominal-multidetector-row-ct-prospective-evaluation-of-a-low-dose-protocol
#20
Luigi Camera, Immacolata Liccardo, Federica Romano, Raffaele Liuzzi, Antonio Rispo, Massimo Imbriaco, Anna Testa, Gaetano Luglio, Simona De Fronzo, Fabiana Castiglione, Luigi Bucci, Arturo Brunetti
OBJECTIVES: To evaluate the diagnostic efficacy of single-pass contrast-enhanced multi-detector CT (CE-MDCT) performed with a low radiation-high contrast (LR-HC) dose protocol in selected patients with non traumatic acute bowel disease. METHODS: Sixty-five (32 M; 33 F; aged 20-67 years) consecutive patients with non traumatic acute bowel disease underwent single-pass CE-MDCT performed 70-100 sec after i.v. bolus injection of a non ionic iodinated contrast media (370 mgI/ml)...
November 9, 2016: British Journal of Radiology
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