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General radiograph Image evaluation criteria

Alice Ashouri Christiansen, Oliver Hendricks, Dorota Kuettel, Kim Hørslev-Petersen, Anne Grethe Jurik, Steen Nielsen, Kaspar Rufibach, Anne Gitte Loft, Susanne Juhl Pedersen, Louise Thuesen Hermansen, Mikkel Østergaard, Bodil Arnbak, Claus Manniche, Ulrich Weber
OBJECTIVE: To determine the reproducibility of evaluation of sacroiliac joint (SIJ) radiographs among readers with varying levels of experience, and to identify potential drivers of disagreement in classification among 5 predefined radiographic lesion types. METHODS: The study sample consisted of 104 consecutive patients aged 18-40 with low back pain ≥ 3 months of duration who met the Assessment of SpondyloArthritis international Society (ASAS) definition for a positive SIJ magnetic resonance imaging, or were HLA-B27-positive and had ≥ 1 spondyloarthritis (SpA)-related clinical/laboratory feature according to the ASAS classification criteria for axial SpA...
October 15, 2016: Journal of Rheumatology
Bethany Richards, James Riley, Adnan Saithna
A high rate of suboptimal shoulder radiographs was identified during a service evaluation exercise in our orthopaedic outpatient clinics. Inadequate radiographs require a return to the radiology department for further imaging, a resultant increased workload, delays in the clinic, increased radiation for patients, and inconvenience and decreased patient satisfaction. Furthermore, if a sub-optimal radiograph is accepted there is concern that diagnoses may be missed. The aim of this project was to decrease the rate of suboptimal radiographs by delivering a teaching package directed towards quality improvement...
2016: BMJ Quality Improvement Reports
Benjamin M Kaye, Susanne A E B Boroffka, Annika N Haagsman, Gert Ter Haar
Tracheal hypoplasia is commonly seen in English Bulldogs affected with brachycephalic airway syndrome. Previously published diagnostic criteria for tracheal hypoplasia in this breed have been a radiographic tracheal diameter:tracheal inlet ratio (TD:TI) < 0.12 or a tracheal diameter:third rib diameter ratio (TD:3R) < 2.0. Computed tomography has become increasingly used for airway evaluation, however published information is lacking regarding CT tracheal dimensions in English Bulldogs. Objectives of this prospective cross-sectional study were to describe radiographic and CT tracheal dimensions in a sample of clinically normal English Bulldogs and compare these values with tracheoscopy scores...
November 2015: Veterinary Radiology & Ultrasound
J Wells, J Christensen, E Samei
PURPOSE: To provide a template for the comprehensive clinical evaluation of new imaging technologies with initial application to mobile digital radiography (DR). METHODS: Four mobile DR devices (GE Optima XR220amx+Flashpad; Carestream DRX Revolution+DRX-1C; Philips Mobile Diagnost wDR; Philips Mobile Diagnost wDR+Skyplate) were evaluated under four categories: 1)Technical specifications: Vendor data were collected and complied into a unified nomenclature. 2)Physical performance: Each unit underwent imaging physics evaluation including MTF, NPS, DQE, and grid artifact analysis...
June 2015: Medical Physics
Sandi A Kwee, Linda L Wong, Brenda Y Hernandez, Owen T M Chan, Miles M Sato, Naoky Tsai
Positron emission tomography (PET) using the radiopharmaceutical tracer fluorine-18 fluorocholine (FCh) can elucidate tumors based on differences in choline phospholipid metabolism between tumor and surrounding tissue. The feasibility of detecting hepatocellular carcinoma (HCC) using FCh PET has been shown despite constitutively high parenchymal choline metabolism in the liver. Since HCC frequently develops in the setting of chronic liver disease, we comparatively evaluated FCh PET/CT between cirrhotic and non-cirrhotic patients with HCC to investigate the effects of hepatic dysfunction on tumor detection and the tumor-to-background ratio (TBR) of FCh uptake...
2015: Diagnostics
A Butt, N W Savage
BACKGROUND: The performance of computer displays represents an important factor influencing the quality of digital radiographs. The aim of this study was to evaluate the performance of computer displays used for the purposes of diagnostic radiology in a sample of dental practices in one Australian state. METHODS: Twelve dental practices comprising 29 displays elected to participate in a detailed performance evaluation of their computer displays according to the AAPM TG18 and DICOM part 14 GSDF standards...
June 2015: Australian Dental Journal
Reint Meursinge Reynders, Luisa Ladu, Laura Ronchi, Nicola Di Girolamo, Jan de Lange, Nia Roberts, Annette Plüddemann
BACKGROUND: Hitting a dental root during the insertion of orthodontic mini-implants (OMIs) is a common adverse effect of this intervention. This condition can permanently damage these structures and can cause implant instability. Increased torque levels (index test) recorded during the insertion of OMIs may provide a more accurate and immediate diagnosis of implant-root contact (target condition) than radiographic imaging (reference standard). An accurate index test could reduce or eliminate X-ray exposure...
2015: Systematic Reviews
David A Reardon, Hideho Okada
In much of medical oncology, including neuro-oncology, there is great interest to evaluate the therapeutic potential of immune-based therapies including vaccines, adoptive T cell strategies and modulators of immune checkpoint regulators such as cytotoxic T lymphocyte antigen 4 and programmed death 1. Immune-based treatments exert an indirect anti-tumor effect by generating potent, tumor-targeting immune responses. Robust anti-tumor immune responses have been shown to achieve encouraging radiographic responses across the spectrum of applied immunotherapeutics which are felt to be indicative of a bona fide anti-tumor effect...
July 2015: Journal of Neuro-oncology
Chih-Hsien Hung, Kuo-Hsuan Chang, Yao-Liang Chen, Yi-Ming Wu, Chiou-Lian Lai, Hong-Shiu Chang, Rong-Kuo Lyu, Yih-Ru Wu, Chiung-Mei Chen, Chin-Chang Huang, Chun-Che Chu, Chun-Hung Chen, Long-Sun Ro
OBJECTIVE: To investigate clinical and radiological features of Tolosa-Hunt syndrome (THS) and examine their diagnostic value, and to propose clinical and radiological features that indicate other symptomatic painful ophthalmoplegias (SPOs) in order to distinguish them from THS. BACKGROUND: Clinical presentations of THS are nonspecific and may overlap with many etiologies. Therefore, excluding other SPOs is essential for correct diagnosis. At the present time, the predictive value of the current International Classification of Headache Disorders (ICHD) criteria is not well established, and specific imaging markers that can discriminate SPOs from THS are lacking...
February 2015: Headache
Joakim H Jonsson, Mohammad M Akhtari, Magnus G Karlsson, Adam Johansson, Thomas Asklund, Tufve Nyholm
BACKGROUND: In this pilot study we evaluated the performance of a substitute CT (s-CT) image derived from MR data of the brain, as a basis for optimization of intensity modulated rotational therapy, final dose calculation and derivation of reference images for patient positioning. METHODS: S-CT images were created using a Gaussian mixture regression model on five patients previously treated with radiotherapy. Optimizations were compared using D max, D min, D median and D mean measures for the target volume and relevant risk structures...
2015: Radiation Oncology
Monika Linek, Silvia Rüfenacht, Chiara Brachelente, Claudia von Tscharner, Claude Favrot, Sylvia Wilhelm, Claudia Nett, Ralf S Mueller, Ursula Mayer, Monika Welle
BACKGROUND: Exfoliative dermatitis has been described in cats as a paraneoplastic skin disease associated with thymoma. There are anecdotal reports of cases without thymoma, with various suspected aetiologies. HYPOTHESIS/OBJECTIVES: To identify common features, underlying causes, response to therapy and outcome of nonthymoma-associated exfoliative dermatitis in cats. METHODS: Retrospective analysis was carried out of cases presented to dermatology referral centres or cases submitted for histopathological examination...
February 2015: Veterinary Dermatology
Hongda Bao, Feng Zhu, Zhen Liu, Zezhang Zhu, Shouyu He, Yitao Ding, Yong Qiu
STUDY DESIGN: A retrospective radiographical study. OBJECTIVE: To determine the association between disc degeneration and spinal malalignment on both coronal and sagittal planes in patients with degenerative lumbar scoliosis (DLS). SUMMARY OF BACKGROUND DATA: In recent years, a thorough understanding of spinal coronal balance and sagittal alignment has become more and more important in treating patients with DLS. Although degeneration of discs has been generally accepted as the main cause of DLS, to date no study has documented the relationships between disc degeneration and the curve magnitude as well as spinal imbalance...
November 15, 2014: Spine
Huanqiang Wang, Tao Li
OBJECTIVE: To conduct a systematic review of studies reporting the comparison of digital radiography (DR) with conventional film-screen radiograph (FSR) in the screening and recognition of pneumoconiosis worldwide, to evaluate the feasibility of DR in the screening and recognition of pneumoconiosis, to analyze the similarity and difference between DR and FSR, to explore the main challenge to utilize DR in the future. METHODS: The national and international databases were systematically searched for original articles on DR for screening and recognition of pneumoconiosis published from first Jan 1998 to first Nov 2013, making evaluation and selection of them, and qualitative data and quantitative data were extracted independently from the selected articles and systematically reviewed...
May 2014: Chinese Journal of Industrial Hygiene and Occupational Diseases
J Rich, B A Golden, C Phillips
The purpose of this study was to review the current literature for the relationship between the preoperative position of the mandibular canal on three-dimensional (3D) radiographic imaging and postoperative neurosensory disturbance (NSD) following a sagittal split ramus osteotomy (SSRO). A literature search was conducted using PubMed, EMBASE, and the Cochrane Database for articles published from 1 January 2000 through 31 December 2013. Studies that included preoperative 3D imaging and assessment of NSD after surgery were reviewed...
September 2014: International Journal of Oral and Maxillofacial Surgery
Ehsan Hekmatin, Seyed Sina Ahmadi, Masoud Ataiekhorasgani, Mahboobe Feizianfard, Shahram Jafaripozve, Nasim Jafaripozve
BACKGROUND: Osteoporosis is one of the most common bone diseases that is characterized by a generalized reduction of the bone mass. Osteoporotic fractures are associated with morbidity, but can be a predictable condition if early diagnosis is made.The diagnosis is based on the World Health Organization's (WHO) T-score criteria. Panoramic images have been also used to predict low bone mineral density. The aim of the study was to evaluate the prediction of lumbar spine bone mineral density (BMD) from the mandibular cortical width in postmenopausal women...
November 2013: Journal of Research in Medical Sciences: the Official Journal of Isfahan University of Medical Sciences
Martin W Huellner, Alexander Bürkert, Klaus Strobel, María del Sol Pérez Lago, Lennart Werner, Urs Hug, Urs von Wartburg, Burkhardt Seifert, Patrick Veit-Haibach
PURPOSE: Chronic hand and wrist pain is a common clinical issue for orthopaedic surgeons and rheumatologists. The purpose of this study was 1. To analyze the interobserver agreement of SPECT/CT, MRI, CT, bone scan and plain radiographs in patients with non-specific pain of the hand and wrist, and 2. to assess the diagnostic accuracy of these imaging methods in this selected patient population. MATERIALS AND METHODS: Thirty-two consecutive patients with non-specific pain of the hand or wrist were evaluated retrospectively...
2013: PloS One
Sue D Barber-Westin, Frank R Noyes
PURPOSE: To determine the clinical healing rate of repairs of meniscus tears that extend into the central one-third region and the factors that affect the outcome. METHODS: A systematic search of PubMed was conducted to determine the outcome of meniscus repairs in the red-white (R/W) zone. Inclusion criteria were as follows: English language, clinical trials published from 1996 to 2013, R/W tears analyzed separately from tears in other zones, arthroscopic suture-based repairs, and all evidence levels...
January 2014: Arthroscopy: the Journal of Arthroscopic & related Surgery
Deepak Gupta, N C Rashmi, Soheyl Sheikh, Shambulingappa Pallagatti, Gaurav Goyal, Ravinder Singh, Priyanka Parnami, Gundeep Singh
PURPOSE: Although the incidence of zygomatic air cell defects (ZACDs) is significantly low in general population, still they pose as a risk factor during surgical procedures like eminectomies and eminoplasties because there is a risk of spread of infection intracranially. Furthermore, such procedures are more common in TMD patients. With this fact in mind, this study was designed to find out the prevalence, radiographic appearance, and characteristics of zygomatic air cell defects in diagnosed symptomatic temporomandibular joint disorder patients...
December 2014: Oral and Maxillofacial Surgery
A Löve, M-L Olsson, R Siemund, F Stålhammar, I M Björkman-Burtscher, M Söderberg
OBJECTIVE: To evaluate the image quality produced by six different iterative reconstruction (IR) algorithms in four CT systems in the setting of brain CT, using different radiation dose levels and iterative image optimisation levels. METHODS: An image quality phantom, supplied with a bone mimicking annulus, was examined using four CT systems from different vendors and four radiation dose levels. Acquisitions were reconstructed using conventional filtered back-projection (FBP), three levels of statistical IR and, when available, a model-based IR algorithm...
November 2013: British Journal of Radiology
Christopher I Shaffrey, Justin S Smith
Lower back pain and pain involving the area of the posterior iliac spine are extremely common. Degeneration of the sacroiliac joint (SIJ) is one potential cause for lower back pain and pain radiating into the groin or buttocks. Degenerative changes to the lumbar spine and sacroiliac joints are common. A recent study evaluating SIJ abnormalities in a primary low back pain population demonstrated 31.7% of patients demonstrated SI joint abnormalities. (4) As is the case for the evaluation and management of isolated lower back pain, the evaluation, management, and role for surgical intervention in SIJ pain is very controversial...
July 2013: Neurosurgical Focus
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