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Diagnostic radiographers

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https://www.readbyqxmd.com/read/29470099/doses-from-cervical-spine-computed-tomography-ct-examinations-in-the-uk
#1
John R Holroyd, Sue Edyvean
OBJECTIVE: To review doses to patients undergoing cervical spine CT examinations in the UK. METHODS: A data collection form was developed and distributed to medical physicists and radiographers via e-mail distribution lists. The form requested details of CT scanners, exposure protocols and patient dose index information. RESULTS: Data were received for 73 scanners. It was seen that 97% of scanners used automatic exposure control, and 60% of scanners used an iterative reconstruction technique for cervical spine examinations...
February 22, 2018: British Journal of Radiology
https://www.readbyqxmd.com/read/29463557/the-airway-transcriptome-as-a-biomarker-for-early-lung-cancer-detection
#2
Ehab Billatos, Jessica L Vick, Marc E Lenburg, Avrum E Spira
Lung cancer remains the leading cause of cancer-related death due to its advanced stage at diagnosis. Early detection of lung cancer can be improved by better defining who should be screened radiographically, and determining which imaging-detected pulmonary nodules are malignant. Gene expression biomarkers measured in normal-appearing airway epithelium provide an opportunity to use lung cancer associated molecular changes in this tissue for early detection of lung cancer. Molecular changes in the airway may result from an etiologic field of injury and/or field cancerization...
February 20, 2018: Clinical Cancer Research: An Official Journal of the American Association for Cancer Research
https://www.readbyqxmd.com/read/29462471/the-use-of-panoramic-radiographs-to-decide-when-interceptive-extraction-is-beneficial-in-children-with-palatally-displaced-canines-based-on-a-randomized-clinical-trial
#3
Julia Naoumova, Heidrun Kjellberg
Objective: To evaluate which palatally displaced canines (PDCs) benefit from interceptive extraction of the deciduous canine, to assess possible side effects from the extraction, and to analyse other dental deviations in patients with PDCs. Design, settings, participants, and intervention: A sample of 67 patients (40 girls, mean age: 11.3 ± 1.1; 27 boys, mean age ± SD: 11.4 ± 0.9) with unilateral (45) or bilateral (22) PDCs were consecutively recruited and randomly allocated to extraction or non-extraction using block randomization...
February 15, 2018: European Journal of Orthodontics
https://www.readbyqxmd.com/read/29462433/congenital-cervical-spine-stenosis-in-a-multicenter-global-cohort-of-patients-with-degenerative-cervical-myelopathy-an-ambispective-report-based-on-a-magnetic-resonance-imaging-diagnostic-criterion
#4
Aria Nouri, Lindsay Tetreault, Satoshi Nori, Allan R Martin, Anick Nater, Michael G Fehlings
BACKGROUND: Congenital spinal stenosis (CSS) of the cervical spine is a risk factor for acute spinal cord injury and development of degenerative cervical myelopathy (DCM). OBJECTIVE: To develop magnetic resonance imaging (MRI)-based criteria to diagnose preexisting CSS and evaluate differences between patients with and without CSS. METHODS: A secondary analysis of international prospectively collected data between 2005 and 2011 was conducted...
February 16, 2018: Neurosurgery
https://www.readbyqxmd.com/read/29462038/the-creation-and-validation-of-a-knee-bone-age-atlas-utilizing-mri
#5
Andrew T Pennock, James D Bomar, John D Manning
BACKGROUND: In managing many pediatric knee conditions, an accurate bone age assessment may be critical for diagnostic, prognostic, and treatment purposes. The aim of this study was to create an atlas of magnetic resonance imaging (MRI) studies of the knee spanning the pediatric and adolescent years that would enable accurate skeletal age to be assessed, potentially forgoing the need for a left-hand radiograph. METHODS: We performed a retrospective assessment of 11 to 31 MRIs from male and female patients of each age from 2 to 19 years...
February 21, 2018: Journal of Bone and Joint Surgery. American Volume
https://www.readbyqxmd.com/read/29459907/impact-of-chronic-kidney-disease-mineral-and-bone-disorder-on-jaw-and-alveolar-bone-metabolism-a-narrative-review
#6
Tatjana Kanjevac, Borivoj Bijelic, Denis Brajkovic, Miroslav Vasovic, Radojica Stolic
Chronic kidney disease (CKD) has become a worldwide public health problem. It is estimated that nearly 90% of patients with chronic renal failure manifest some symptoms of oral disease. With advances in medical treatment, CKD patients are living longer and require oral care. Chronic kidney disease is often accompanied by disturbances in mineral metabolism which are classified as their own clinical entity known as CKD-mineral and bone disorder (CKD-MBD). CKD-MBD affects all aspects of bone physiology: bone volume, bone turnover and bone mineralization...
2018: Oral Health & Preventive Dentistry
https://www.readbyqxmd.com/read/29458980/right-lower-quadrant-abdominal-pain-do-not-forget-about-ovarian-torsion-on-the-computed-tomography-scan
#7
William Shyy, Roneesha S Knight, Nathan A Teismann
BACKGROUND: Abdominal pain is one of the most common chief complaints of patients presenting to emergency departments, and emergency physicians (EPs) often evaluate patients with right lower quadrant abdominal pain. Ovarian torsion is a rare cause of abdominal pain, but early diagnosis is essential for salvage of the affected ovary. The diagnostic study of choice for ovarian torsion is a pelvic ultrasound with color Doppler, but it is important for EPs and radiologists to be aware of findings of ovarian torsion that might appear on computed tomography (CT)...
February 17, 2018: Journal of Emergency Medicine
https://www.readbyqxmd.com/read/29456862/thin-laryngeal-foreign-bodies-in-infants-diagnostic-potential-of-mdct
#8
Antonella Concerto, Marco Cavallaro, Carmela Visalli, Anna Maria Bagnato, Ugo Barbaro, Ignazio Salamone
A laryngeal foreign body (FB) is a significant, life-threatening event in the paediatric population. Incomplete airways obstruction by a thin, laminar, radiolucent FB lodged in the glottis or supraglottis is a rare occurrence that may present with non-specific symptoms, absence of chest findings, and normal radiographic investigations, resulting in misdiagnosis, delay in diagnosis, or prolonged recovery. We report two cases of 10-month-old male infants, each with a thin radiolucent FB lodged between the vocal folds that was detected with low-dose multidetector computed tomography (MDCT) and thin-slice reconstruction...
April 2018: Respirology Case Reports
https://www.readbyqxmd.com/read/29455627/gastrointestinal-spindle-cell-tumor-of-the-rumen-with-metastasis-to-the-liver-in-a-goat
#9
Michael E Pesato, Ashley G Boyle, Marie-Eve Fecteau, Alexander Hamberg, Billy I Smith
Many neoplasms have been reported in goats; however, neoplasia of the rumen is rarely reported. A 9-y-old castrated male pygmy goat was presented with a history of respiratory stertor, fever, and anorexia. A respiratory diagnostic work-up including skull and thorax radiographs and endoscopy revealed minor enlargement of the arytenoids but no other abnormal findings. After a month of little improvement on symptomatic treatment and worsening general health, the goat was euthanized. On autopsy, the forestomachs, liver, spleen, diaphragm, and the ventral and lateral aspects of the cranial third of the walls of the peritoneal cavity were adhered to one another by fibrinous and fibrous adhesions...
February 1, 2018: Journal of Veterinary Diagnostic Investigation
https://www.readbyqxmd.com/read/29446678/interrater-agreement-and-diagnostic-accuracy-of-a-novel-computer-aided-detection-process-for-the-detection-and-prevention-of-retained-surgical-instruments
#10
Theodore C Marentis, Matthew S Davenport, Jonathan R Dillman, Ramon Sanchez, Aine M Kelly, Paul Cronin, Mariana R DeFreitas, Lubomir Hadjiiski, Heang-Ping Chan
OBJECTIVE: The purpose of this study is to evaluate the diagnostic accuracy of a process incorporating computer-aided detection (CAD) for the detection and prevention of retained surgical instruments using a novel nondeformable radiopaque μTag. MATERIALS AND METHODS: A high-specificity CAD system was developed iteratively from a training set (n = 540 radiographs) and a validation set (n = 560 radiographs). A novel test set composed of 700 thoracoabdominal radiographs (410 with a randomly placed μTag and 290 without a μTag) was obtained from 10 cadavers embedded with confounding iatrogenic objects...
February 15, 2018: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/29442733/thermal-stability-and-x-ray-attenuation-studies-on-%C3%AE-bi%C3%A2-o%C3%A2-%C3%AE-bi%C3%A2-o%C3%A2-and-bi-based-nanocomposites-for-radiopaque-fabrics
#11
Sangeetha Jayakumar, T Saravanan, John Philip
Nanocomposites containing α-Bi2O3, β-Bi2O3 and Bi nanoparticles as nanofillers in vulcanized silicone resin as a matrix are prepared and their diagnostic X-ray attenuation property is studied. The nanocomposites are prepared using a simple solution casting technique, with nanofiller concentration varying from 2-50 wt%. Thermogravimetric analysis and differential scanning calorimetry are performed to study the thermal stability of the nanocomposites. The attenuation property is studied by exposing the nanocomposites containing α-Bi2O3, β-Bi2O3 and Bi nanoparticles to X-rays of energy 30-60 keV...
June 1, 2018: Journal of Nanoscience and Nanotechnology
https://www.readbyqxmd.com/read/29438110/the-randomized-educational-acute-respiratory-distress-syndrome-diagnosis-study-a-trial-to-improve-the-radiographic-diagnosis-of-acute-respiratory-distress-syndrome
#12
Shannon L Goddard, Gordon D Rubenfeld, Venika Manoharan, Shelly P Dev, John Laffey, Giacomo Bellani, Tai Pham, Eddy Fan
OBJECTIVES: Radiographic criteria for acute respiratory distress syndrome have been criticized for poor reliability. Our objective was to test an educational intervention to improve the radiographic identification of acute respiratory distress syndrome by participants in the Large Observational Study to Understand the Global Impact of Severe Acute Respiratory Failure study. DESIGN: Randomized controlled trial. SETTINGS: Large Observational Study to Understand the Global Impact of Severe Acute Respiratory Failure study centers...
February 12, 2018: Critical Care Medicine
https://www.readbyqxmd.com/read/29436237/solid-variant-of-aneurysmal-bone-cyst-of-the-temporal-bone
#13
Neil Saez, Giriraj K Sharma, Christian H Barnes, Yuxin Lu, Frank P Hsu, Kevin C Huoh, Hamid R Djalilian, Harrison W Lin
OBJECTIVES: Aneurysmal bone cysts (ABC) are benign, rapidly growing osteolytic lesions. Solid variant of ABC (SVABC) is a rare subtype of ABC that has not been reported in the temporal bone. METHODS: We report the case of a 6-year-old boy presenting with a slowly enlarging bony protuberance over the right zygomatic/malar eminence region. Computed tomography and magnetic resonance imaging demonstrated a 2.6 × 5.8 × 5.1 cm temporal bone mass involving the right mastoid, petrous, and temporal squamosal calvarium, with extradural intracranial extension to the middle cranial fossa...
February 1, 2018: Annals of Otology, Rhinology, and Laryngology
https://www.readbyqxmd.com/read/29430105/accessory-branch-of-canalis-sinuosus-mimicking-external-root-resorption-a-diagnostic-dilemma
#14
Priyal Naresh Shah, Ankit V Arora, Sonali V Kapoor
The aim of this study was to recognize the importance of canalis sinuosus in Endodontics. A 60-year-old male patient reported with the chief complaint of pain and swelling in upper front tooth region for 2 weeks with a history of trauma 21 years back. Clinical examination revealed fractured tooth 21 (maxillary left central incisor) with an associated sinus tract. Radiographic examination revealed diffuse periapical radiolucency in relation to tooth 21 and external resorptive defect in apical third of the root of tooth 11 (maxillary right central incisor)...
November 2017: Journal of Conservative Dentistry: JCD
https://www.readbyqxmd.com/read/29428246/measurement-of-carpal-alignment-indices-using-3-dimensional-computed-tomography
#15
Ki Won Lee, Joo Yul Bae, Dong-Kyo Seo, Sang Bum Kim, Hyun Il Lee
PURPOSE: This study aimed to establish normal values for wrist carpal alignment measured by 3-dimensional computed tomography (CT) and to show the inter- and intraobserver reliability of this measurement compared with simple radiography. METHODS: The study utilized 3-dimensional CT and simple radiography of wrist joints in 30 asymptomatic volunteers. The wrist position was standardized using a custom-designed positioning device. Three independent observers measured carpal alignment parameters including distal radius articular angle, radiolunate angle, radioscaphoid angle, radiocapitate angle, radius-third metacarpal angle, scapholunate angle, lunocapitate angle, and lunate-third metacarpal angle...
February 7, 2018: Journal of Hand Surgery
https://www.readbyqxmd.com/read/29428094/automated-computation-of-femoral-angles-in-dogs-from-three-dimensional-computed-tomography-reconstructions-comparison-with-manual-techniques
#16
F Longo, T Nicetto, T Banzato, G Savio, M Drigo, R Meneghello, G Concheri, M Isola
The aim of this ex vivo study was to test a novel three-dimensional (3D) automated computer-aided design (CAD) method (aCAD) for the computation of femoral angles in dogs from 3D reconstructions of computed tomography (CT) images. The repeatability and reproducibility of three manual radiography, manual CT reconstructions and the aCAD method for the measurement of three femoral angles were evaluated: (1) anatomical lateral distal femoral angle (aLDFA); (2) femoral neck angle (FNA); and (3) femoral torsion angle (FTA)...
February 2018: Veterinary Journal
https://www.readbyqxmd.com/read/29419705/relationship-between-sever-disease-and-skeletal-maturity
#17
Mindy M Duong, Allen D Nicholson, Samuel Q Li, Allison Gilmore, Daniel R Cooperman, Raymond W Liu
BACKGROUND: Sever disease is a common condition in active, growing children. This condition presents as pain in the heel and is thought to be an overuse condition of the calcaneal apophysis. There are currently no defined radiographic diagnostic criteria for evaluation of Sever disease, with radiographs generally showing normal appearance of the calcaneal apophysis. A better understanding of the relationship of Sever disease and skeletal maturity may allow for improved interpretation of radiographs when trying to diagnose this condition...
February 6, 2018: Journal of Pediatric Orthopedics
https://www.readbyqxmd.com/read/29419477/imaging-for-pulmonary-embolism-in-sickle-cell-disease-a-17-year-experience
#18
Patrick Tivnan, Henny H Billett, Leonard M Freeman, Linda B Haramati
Sickle cell disease, a complex disorder with known pulmonary complications, has the potential to confound the diagnosis of pulmonary embolism. We hypothesized that when the choice of imaging is guided by chest radiographic results, CT pulmonary angiography (CTPA) and Ventilation-Perfusion (V/Q) scintigraphy have comparable diagnostic performance in sickle cell disease. Methods: A retrospective cohort of adults with sickle cell disease who were imaged for suspected pulmonary embolism with either CTPA or V/Q, from 2000-2016, at our institution, was established...
February 1, 2018: Journal of Nuclear Medicine: Official Publication, Society of Nuclear Medicine
https://www.readbyqxmd.com/read/29414927/diagnostic-value-of-t1-slope-in-degenerative-cervical-spondylotic-myelopathy
#19
Jin Sun, Hong-Wei Zhao, Jun-Jie Wang, Liang Xun, Na-Xin Fu, Hui Huang
BACKGROUND To explore the diagnostic value of sagittal measurement of thoracic inlet parameters for degenerative cervical spondylotic myelopathy (DCSM). MATERIAL AND METHODS Sixty patients with DCSM (study group) and the same number of normal subjects (control group) were initially enrolled in the study. All data from X-ray in the standing position and computed tomography (CT) in the supine position were collected and carefully analyzed. Cervical sagittal parameters, including C2-C7 angle, C2-C7 sagittal vertical axis (C2-C7 SVA), T1 slope, thoracic inlet angle (TIA), and neck tilt (NT), were measured at the lateral radiographs by using standard X-rays and CT...
February 7, 2018: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/29414526/morphometric-analysis-on-t1-weighted-mri-complements-visual-mri-review-in-focal-cortical-dysplasia
#20
Lily C Wong-Kisiel, Diego F Tovar Quiroga, Daniel L Kenney-Jung, Robert J Witte, Alexandra Santana-Almansa, Gregory A Worrell, Jeffrey Britton, Benjamin H Brinkmann
OBJECTIVE: Focal cortical dysplasia (FCD) is a common pathology in focal drug resistant epilepsy (DRE). Voxel based morphometric MRI analysis has been proposed as an adjunct to visual detection of FCD, which remains challenging given the subtle radiographic appearance of FCD. This study evaluates the diagnostic value of morphometric analysis program (MAP) in focal DRE with pathology-confirmed FCD. METHODS: Automated morphometric analysis program analysis generated z-score maps derived from T1 images, referenced to healthy adult or pediatric controls for each of 39 cases with pathology-confirmed FCD...
January 26, 2018: Epilepsy Research
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