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https://www.readbyqxmd.com/read/28822311/lingular-segment-torsion-following-a-left-upper-division-segmentectomy
#1
Naohiro Taira, Hidenori Kawasaki, Sayako Takahara, Tomonori Furugen, Takaharu Ichi, Kazuaki Kushi, Tomofumi Yohena, Tsutomu Kawabata
INTRODUCTION: Numerous publications regarding lung torsion have reported lobar torsion after lobectomy. On the other hand, torsion of the remaining segment after segmentectomy is extremely rare. We herein report a rare case of lingular segment torsion following a left upper division segmentectomy. CASE: A 68-year old female underwent thoracoscopic segmentectomy of the left upper division. She underwent chest radiography immediately after the initial surgery, which revealed complete expansion on the operated side...
August 4, 2017: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/28822074/general-equations-for-optimal-selection-of-diagnostic-image-acquisition-parameters-in-clinical-x-ray-imaging
#2
Xiaoming Zheng
The purpose of this work was to examine the effects of relationship functions between diagnostic image quality and radiation dose on the governing equations for image acquisition parameter variations in X-ray imaging. Various equations were derived for the optimal selection of peak kilovoltage (kVp) and exposure parameter (milliAmpere second, mAs) in computed tomography (CT), computed radiography (CR), and direct digital radiography. Logistic, logarithmic, and linear functions were employed to establish the relationship between radiation dose and diagnostic image quality...
August 18, 2017: Radiological Physics and Technology
https://www.readbyqxmd.com/read/28821936/minimally-invasive-plate-augmentation-in-the-treatment-of-long-bone-non-unions
#3
Ki-Chul Park, Chang-Wug Oh, Joon-Woo Kim, Kyeong-Hyeon Park, Jong-Keon Oh, Il-Hyung Park, Hee-Soo Kyung, Jeong Heo
INTRODUCTION: Exchange nailing is most acceptable for treating hypertrophic non-union of the long bones, requiring the removal of previously fixed implant. However, its main effect of mechanical stabilization is controversial in non-isthmal area. We hypothesized that minimally invasive plate augmentation over the non-union site may have a better option, without the need of bone grafting or removing pre-existing implants. MATERIALS AND METHODS: Seventeen patients with hypertrophic non-union of the long bones between 2010 and 2014 on radiography who previously underwent intramedullary (IM) nailing or plate osteosynthesis for long-bone fractures were included...
August 18, 2017: Archives of Orthopaedic and Trauma Surgery
https://www.readbyqxmd.com/read/28821705/veterinary-nurse-to-medical-diagnostic-radiographer
#4
Nicholas Taylor
Nicholas Taylor is senior diagnostic radiographer at the Great Western Hospital, Swindon, having initially qualified as a veterinary nurse. It was a college lecture that initially sparked his interest in radiography - little did he know where it would lead.
August 19, 2017: Veterinary Record
https://www.readbyqxmd.com/read/28819817/estimation-of-entrance-surface-air-kerma-due-to-diagnostic-x-ray-examinations-of-adult-patients-in-uttarakhand-india-and-establishment-of-local-diagnostic-reference-levels
#5
Satish C Uniyal, Vineet Chaturvedi, Sunil D Sharma, Shailendra Raghuvanshi
It is well established that diagnostic X-ray practices must be optimised to keep patient radiation dose as low as compatible with providing the diagnostic information required. For effective optimisation of diagnostic exposures, the International Commission on Radiological Protection (ICRP) introduced the concept of diagnostic reference levels (DRLs) in 1996. The present study aimed to carry out an extensive dose survey of diagnostic radiography installations in the Uttarakhand region of India to establish local DRL Values for the different diagnostic practices...
August 17, 2017: Australasian Physical & Engineering Sciences in Medicine
https://www.readbyqxmd.com/read/28819463/role-and-correlation-of-high-resolution-ultrasound-and-magnetic-resonance-imaging-in-evaluation-of-patients-with-shoulder-pain
#6
Amandeep Singh, Chuni Lal Thukral, Kamlesh Gupta, Mahesh Inder Singh, Sneh Lata, Ram Krishan Arora
BACKGROUND: The study aimed to evaluate of the role of high-resolution ultrasound and magnetic resonance imaging in patients with shoulder pain. MATERIAL/METHODS: This prospective study included 50 patients referred for ultrasound and MRI because of shoulder pain. All patients were examined clinically, followed by radiography of the affected shoulder. High-resolution ultrasound examination of the involved shoulder was performed together with an examination of the contralateral normal shoulder, followed by MRI of the symptomatic shoulder in all 50 patients...
2017: Polish Journal of Radiology
https://www.readbyqxmd.com/read/28816182/a-survey-of-endodontic-practices-among-dentists-in-burkina-faso
#7
Wendpoulomdé Ad Kaboré, Valérie Chevalier, Yolande Gnagne-Koffi, Carole Dw Ouédraogo, Diouma Ndiaye, Babacar Faye
AIM: Dental surgeons must be aware of the most appropriate endodontic treatments and how to properly conduct them. The aim of this study was to evaluate the knowledge of dental surgeons in Burkina Faso in terms of endodontic treatment procedures. MATERIALS AND METHODS: This descriptive, cross-sectional study was performed during the regular annual conference of the National Board of Dental Surgeons of Burkina Faso, held on February 27 and 28, 2015 in Ouagadougou, through a questionnaire...
August 1, 2017: Journal of Contemporary Dental Practice
https://www.readbyqxmd.com/read/28814181/full-mouth-intraoral-radiographic-survey-in-rabbits
#8
Adriana Regalado, Loïc Legendre
Dental pathologies are highly prevalent in pet rabbit populations, making oral radiography an essential tool in the evaluation of lagomorph dentitions. The unique anatomy of the rabbit's mouth limits the examination of the conscious animal to the rostral portion of it's mouth. In addition, the oral examination of an aradicular hypsodont tooth is restricted to the short coronal fraction of its crown. Erstwhile images obtained by the extraoral technique were once considered the most practical and informative tool in rabbit dentistry; however, limited visualization of the key structures of individual teeth became the major drawback of this technique...
September 2017: Journal of Veterinary Dentistry
https://www.readbyqxmd.com/read/28813987/personalized-design-of-a-hand-prosthesis-considering-anthropometry-of-a-real-hand-extracted-from-radiography
#9
E Castillo-Castaneda, A Bemardo-Vasquez
Commercially available prostheses do not meet patients' expectations regarding dimensions, shape and aesthetic reasons. This paper presents the design of an anthropomorphic and anthropometric prosthesis based on dimensions and shape extracted from a digitized radiograph of the healthy hand of the patient. The mobility of the hand is guaranteed by making a design of phalanges, joints, ligaments and tendons, as closest as possible to a real hand. The kinematic model is presented and validated. A proposal of the actuation system is also described...
July 2017: IEEE ... International Conference on Rehabilitation Robotics: [proceedings]
https://www.readbyqxmd.com/read/28811568/dynamic-x-ray-radiography-reveals-particle-size-and-shape-orientation-fields-during-granular-flow
#10
François Guillard, Benjy Marks, Itai Einav
When granular materials flow, the constituent particles segregate by size and align by shape. The impacts of these changes in fabric on the flow itself are not well understood, and thus novel non-invasive means are needed to observe the interior of the material. Here, we propose a new experimental technique using dynamic X-ray radiography to make such measurements possible. The technique is based on Fourier transformation to extract spatiotemporal fields of internal particle size and shape orientation distributions during flow, in addition to complementary measurements of velocity fields through image correlation...
August 15, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28811353/the-omeract-rheumatoid-arthritis-magnetic-resonance-imaging-mri-scoring-system-updated-recommendations-by-the-omeract-mri-in-arthritis-working-group
#11
Mikkel Østergaard, Charles G Peterfy, Paul Bird, Frédérique Gandjbakhch, Daniel Glinatsi, Iris Eshed, Espen A Haavardsholm, Siri Lillegraven, Pernille Bøyesen, Bo Ejbjerg, Violaine Foltz, Paul Emery, Harry K Genant, Philip G Conaghan
OBJECTIVE: The Outcome Measures in Rheumatology (OMERACT) Rheumatoid Arthritis (RA) Magnetic Resonance Imaging (MRI) scoring system (RAMRIS), evaluating bone erosion, bone marrow edema/osteitis, and synovitis, was introduced in 2002, and is now the standard method of objectively quantifying inflammation and damage by MRI in RA trials. The objective of this paper was to identify subsequent advances and based on them, to provide updated recommendations for the RAMRIS. METHODS: MRI studies relevant for RAMRIS and technical and scientific advances were analyzed by the OMERACT MRI in Arthritis Working Group, which used these data to provide updated considerations on image acquisition, RAMRIS definitions, and scoring systems for the original and new RA pathologies...
August 15, 2017: Journal of Rheumatology
https://www.readbyqxmd.com/read/28810091/preoperative-chest-radiography-in-elective-surgery-review-and-update
#12
Ethan M Young, Joel D Farmer
INTRODUCTION: The preoperative evaluation is designed to identify factors that may predispose a patient to perioperative complications in an effort to ensure patient safety. The use of chest radiography in the preoperative evaluation has progressed from routine testing to a more selective approach based on evidence that routine testing is low yield. However, preoperative chest radiography (POCR) may still be utilized more frequently than necessary as guidelines provide varying recommendations and providers continue to order the test by convention...
February 2017: South Dakota Medicine: the Journal of the South Dakota State Medical Association
https://www.readbyqxmd.com/read/28808982/radial-head-prosthesis-results-overview
#13
E Carità, A Donadelli, L Cugola, P Perazzini
BACKGROUND/PURPOSE: Radial head replacement is frequently used in treatment of radial head fractures or sequela. Impossibility to restore a correct anatomy, acute elbow traumatic instability and failure of osteosynthesis hardware are the most common indications. The authors describe their case studies and results on the implantation of various radial head prostheses. MATERIALS: Between June 2005 and June 2016, 28 radial head prostheses were implanted in the same number of patients with an average follow-up of 49 months (6-104)...
August 14, 2017: Musculoskeletal Surgery
https://www.readbyqxmd.com/read/28808745/parathyroid-hormone-1-34-promotes-fracture-healing-in-ovariectomized-rats-with-type-2-diabetes-mellitus
#14
G Y Liu, G L Cao, F M Tian, H P Song, L L Yuan, L D Geng, Z Y Zheng, L Zhang
Ovariectomized (OVX) rats with type 2 diabetes mellitus (T2DM) with femur fracture received vehicle, insulin, or insulin plus parathyroid hormone (PTH) treatment for 2 and 3 weeks. Radiography, histomorphometry, histology, and immunohistochemistry in callus were evaluated. INTRODUCTION: Reports about effects of PTH plus insulin on callus formation of osteoporotic fracture with T2DM were limited. This study was designed to investigate the effects of the combination of PTH and insulin on fracture healing in OVX rats with T2DM...
August 14, 2017: Osteoporosis International
https://www.readbyqxmd.com/read/28808473/failure-of-cone-beam-computed-tomography-in-detection-of-fiber-post-perforation
#15
Mahta Fazlyab, Saeed Asgary
Detection of iatrogenic root perforation during post-space preparation especially in labiolingual plane can be challenging due to the two-dimensional nature of conventional radiography; this can be even more challenging if the cemented post is radiolucent. Cone-beam computed tomography (CBCT) scans were shown to be a valuable diagnostic aid in diagnosis of such cases. However, in this case, the application of CBCT did not help in diagnosis of a labial fiber post perforation in a maxillary central incisor which was finally detected through exploratory surgery...
2017: Iranian Endodontic Journal
https://www.readbyqxmd.com/read/28808451/prevalence-of-taurodont-molars-in-a-selected-iranian-adult-population
#16
Davoud Jamshidi, Maryam Tofangchiha, Nasim Jafari Pozve, Mahdis Mohammadpour, Bijan Nouri, Kazem Hosseinzadeh
INTRODUCTION: Taurodontism is an anomaly characterized by elongated crowns and consumedly apical location of the bifurcation area. This study aimed to determine the prevalence of taurodontism in molars based on digital panoramic radiographies in eight cities of Iran. METHODS AND MATERIALS: This descriptive cross-sectional study was conducted on 2360 digital panoramic radiographs taken for different treatment purposes. Demographic information of patients was recorded and radiographs were evaluated for presence of taurodont molars...
2017: Iranian Endodontic Journal
https://www.readbyqxmd.com/read/28807370/descriptive-analysis-of-factors-associated-with-external-cervical-resorption
#17
Athina M Mavridou, Lars Bergmans, Dick Barendregt, Paul Lambrechts
INTRODUCTION: The aim of this study was to perform a descriptive analysis of the occurrence of external cervical resorption (ECR) in relation to the patients' characteristics (sex, age, and tooth type) and the potentially involved predisposing factors. METHODS: This study includes data on 284 patients (337 teeth with evidence of ECR) referred to the University Hospital Leuven (Leuven, Belgium) and Endo Rotterdam (Rotterdam, the Netherlands) for diagnosis and treatment from 2010 to 2015...
August 11, 2017: Journal of Endodontics
https://www.readbyqxmd.com/read/28804729/organ-dose-variability-and-trends-in-tomosynthesis-and-radiography
#18
Jocelyn Hoye, Yakun Zhang, Greeshma Agasthya, Greg Sturgeon, Anuj Kapadia, W Paul Segars, Ehsan Samei
The purpose of this study was to investigate relationships between patient attributes and organ dose for a population of computational phantoms for 20 tomosynthesis and radiography protocols. Organ dose was estimated from 54 adult computational phantoms (age: 18 to 78 years, weight 52 to 117 kg) using a validated Monte-Carlo simulation (PENELOPE) of a system capable of performing tomosynthesis and radiography. The geometry and field of view for each exam were modeled to match clinical protocols. For each protocol, the energy deposited in each organ was estimated by the simulations, converted to dose units, and then normalized by exposure in air...
July 2017: Journal of Medical Imaging
https://www.readbyqxmd.com/read/28802775/catastrophic-antiphospholipid-syndrome-caps-induced-ischemic-pancreatic-ducts-injury-mimicking-intraductal-papillary-mucinous-neoplasm-ipmn
#19
Léa Savey, Jean-Charles Piette, Jérome Bellanger, Laurent Palazzo, Zahir Amoura, Alain Sauvanet, Jean-François Pouget-Abadie, Philippe Sogni, Joseph Emmerich, Nathalie Costedoat-Chalumeau
OBJECTIVES: Catastrophic antiphospholipid syndrome (CAPS) is a life-threatening disease characterized by multiple small-vessel occlusions of rapid onset. Ischemic pancreatic duct lesions secondary to CAPS have never been reported. METHODS: We describe 4 patients who presented lesions suspected to be intraductal papillary mucinous neoplasm (IPMN) of the pancreas following a CAPS. RESULTS: All patients had a history of CAPS months or years before the IPMN diagnosis...
July 10, 2017: Seminars in Arthritis and Rheumatism
https://www.readbyqxmd.com/read/28801924/foramen-epiploicum-mesh-closure-femc-through-a-ventral-midline-laparotomy
#20
T van Bergen, A Rötting, P Wiemer, S Schauvliege, K Vanderperren, F Ugahary, A Martens
BACKGROUND: Preventive laparoscopic closure of the epiploic foramen (EF) has previously been described, but methods for EF closure during laparotomy for treatment of colic are lacking. OBJECTIVES: To describe the Foramen Epiploicum Mesh Closure (FEMC) technique through a ventral midline laparotomy in horses under general anaesthesia and its outcome. STUDY DESIGN: Terminal surgical experiment and in vivo study. METHODS: In a pilot study a standard ventral midline laparotomy was performed under general anaesthesia in 10 experimental horses and a three-dimensional expandable diabolo-shaped mesh construct was manually introduced through the EF into the omental vestibule...
August 12, 2017: Equine Veterinary Journal
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