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https://www.readbyqxmd.com/read/28212114/discriminative-feature-representation-an-effective-postprocessing-solution-to-low-dose-ct-imaging
#1
Yang Chen, Jin Liu, Yining Hu, Jian Yang, Luyao Shi, Huazhong Shu, Zhiguo Gui, Gouenou Coatrieux, Limin Luo
This paper proposes a concise and effective approach termed discriminative feature representation (DFR) for low dose computerized tomography (LDCT) image processing, which is currently a challenging problem in medical imaging field. This DFR method assumes LDCT images as the superposition of desirable high dose CT (HDCT) 3D features and undesirable noise-artifact 3D features (the combined term of noise and artifact features induced by low dose scan protocols), and the decomposed HDCT features are used to provide the processed LDCT images with higher quality...
February 17, 2017: Physics in Medicine and Biology
https://www.readbyqxmd.com/read/28210455/morphea-en-coup-de-sabre-an-unusual-oral-presentation
#2
Sven Niklander, Constanza Marín, René Martínez, Alfredo Esguep
Morphea, or localized scleroderma, is an inflammatory disease that leads to sclerosis of the skin and underlying tissues due to excessive collagen deposition. Oral involvement is unusual and it may produce white linear fibrotic areas with a scar-like appearance, atrophy of tongue papillae, gingival recession and alveolar bone resorption. We report a case of a 13-year-old girl who consulted for progressive recession on the attached gingiva of her upper left incisors. She also presented a hypopigmented line on the left side skin of her upper lip, which continued through the vermilion and the lip mucosa, including the gingiva of the affected teeth...
February 2017: Journal of Clinical and Experimental Dentistry
https://www.readbyqxmd.com/read/28210025/vascular-lipoleiomyoma-of-the-uterus-an-unusual-case
#3
Vesna Chibisheva, Vesna Antovska, Milka Trajanova, Drage Dabeski, Rubens Jovanovic, Ivana Kijajova
INTRODUCTION: Uterine lipoleiomyomas are a rare type of uterine myomas, which have been seldom diagnosed and are less known and still unusual. Histologically they are composed of smooth muscle cells with multiple fat cells and fibrous tissue. Their pathogenesis is still a stigmata and their preoperative diagnosis is still questionable. CASE REPORT HISTORY: A 39-year old woman presented at the University clinic for obstetrics and gynecology with complaints of a mild low abdominal and pelvic pain, increased frequency of vaginal bleeding and abdominal distension...
December 2016: Medical Archives
https://www.readbyqxmd.com/read/28208958/radiological-and-histopathological-outcome-of-giant-cell-tumor-of-femur-with-denosumab-treatment-a-case-report
#4
Preethi Dileep Menon, R Krishnakumar, Annie Jojo
Giant Cell Tumour of Bone (GCTB) is a benign but locally aggressive osteolytic skeletal neoplasm of young adults consisting of giant cells expressing RANK (Receptor Activator of Nuclear Factor-κB) and mesenchymal spindle-like stromal cells expressing RANKL (RANK ligand). The interaction of these cells leads to bone resorption. Recently, the RANKL inhibitor, denosumab, has demonstrated activity against giant-cell tumours. The current article reports a case of a Giant cell tumour of left distal femur with pathological fracture...
December 2016: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28207388/segmentation-of-pathological-structures-by-landmark-assisted-deformable-models
#5
Bulat Ibragimov, Robert Korez, Bostjan Likar, Franjo Pernus, Lei Xing, Tomaz Vrtovec
Computerized segmentation of pathological structures in medical images is challenging, as, in addition to unclear image boundaries, image artifacts and traces of surgical activities, the shape of pathological structures may be very different from the shape of normal structures. Even if a sufficient number of pathological training samples are collected, statistical shape modeling cannot always capture shape features of pathological samples as they may be suppressed by shape features of a considerably larger number of healthy samples...
February 13, 2017: IEEE Transactions on Medical Imaging
https://www.readbyqxmd.com/read/28203510/midface-osteotomies-for-feminization-of-the-facial-skeleton
#6
T Kalle Lundgren, Filip Farnebo
Facial feminization surgery is a term to describe the surgical alteration of a masculine facial appearance to a more feminine appearance, which is most commonly performed for male-to-female transsexual individuals. To alter the midfacial relations, segmentalized osteotomies were performed in selected patients expanding on the established techniques for facial feminization surgery. All patients underwent a preoperative 3D computerized tomography scan and 3D photography before and after the surgery. The inclusion of the midface in surgery was determined based on the relative projection and angle of the zygomatic body compared with the supraorbital region (the supraorbital region was reduced in all patients)...
January 2017: Plastic and Reconstructive Surgery. Global Open
https://www.readbyqxmd.com/read/28199077/skin-to-calyx-distance-is-not-a-predictive-factor-for-miniaturized-percutaneous-nephrolithotomy-outcomes
#7
Faruk Ozgor, Onur Kucuktopcu, Burak Ucpinar, Fatih Yanaral, Murat Binbay
OBJECTIVE: To evaluate the predictive value of the distance from skin to calyx (SCD) on the outcome and complication rates of patients undergoing mPNL. MATERIALS AND METHODS: Patient's charts, who had undergone mPNL between June 2012 and June 2015, were analyzed retrospectively. Patients who had a preoperative computerized tomography (CT) were enrolled into the study. Two separateurologists evaluated the CT scans and calculated the SCD defined as the distance between the skin and surface/lateral edge of the calyx, which was the preferred site of entry for percutaneous access...
February 15, 2017: International Braz J Urol: Official Journal of the Brazilian Society of Urology
https://www.readbyqxmd.com/read/28198517/a-monte-carlo-study-for-optimizing-the-detector-of-spect-imaging-using-a-xcat-human-phantom
#8
Mohammad Khoshakhlagh, Jalil Pirayesh Islamian, Seyyed Mohammad Abedi, Babak Mahmoudian, Masoud Shayesteh Azar
BACKGROUND: Acquiring a high quality image has assigned an important concern for obtaining accurate diagnosis in nuclear medicine. Detector is a critical component of Single Photon Emission Computed Tomography (SPECT) imaging system for giving accurate information from exact pattern of radionuclide distribution in the target organ. The images are strongly affected by the attenuation, scattering, and response of the detector. The conventional detector is mainly made from sodium iodide activated by thallium [NaI(Tl)] in nuclear medicine imaging...
2017: Nuclear Medicine Review. Central & Eastern Europe
https://www.readbyqxmd.com/read/28194757/a-population-based-study-on-epidemiology-of-intensive-care-unit-treated-traumatic-brain-injury-in-iceland
#9
G M Jonsdottir, S H Lund, B Snorradottir, S Karason, I H Olafsson, K Reynisson, B Mogensen, K Sigvaldason
BACKGROUND: Traumatic brain injury is a worldwide health issue and a significant cause of preventable deaths and disabilities. We aimed to describe population-based data on intensive care treated traumatic brain injury in Iceland over 15 years period. METHODS: Retrospective review of all intensive care unit admissions due to traumatic brain injury at The National University Hospital of Iceland 1999-2013. Data were collected on demographics, mechanism of injury, alcohol consumption, glasgow come scale upon admission, Injury Severity Scoring, acute physiology and chronic health evaluation II score, length of stay, interventions and mortality (defined as glasgow outcome score one)...
February 13, 2017: Acta Anaesthesiologica Scandinavica
https://www.readbyqxmd.com/read/28193088/scrotal-abscess-a-rare-presentation-of-complicated-necrotizing-pancreatitis
#10
Seyyedhadi Mirhashemi, Mohsen Soori, Gholamhossein Faghih, Hassan Peyvandi, Omid Shafagh
Acute pancreatitis is characterized by activation of digestive enzymes inside the pancreas. In severe pancreatitis, necrosis of pancreas and surrounding tissues may occur. Acute necrotizing pancreatitis commonly presents as pancreatic abscess occasionally with systemic complications. Rarely, necrotic tissue may be drained from scrotum due to retroperitoneal extension of necrotic process. Here, we report a case of acute necrotizing pancreatitis in a 29-year-old man who presented with severe abdominal pain, nausea and vomiting...
February 2017: Archives of Iranian Medicine
https://www.readbyqxmd.com/read/28192866/the-importance-of-medial-lateral-styloid-process-angulation-coronal-plane-angle-in-symptomatic-eagle-syndrome
#11
Veysel Burulday, Mehmet Hüseyin Akgül, Nuray Bayar Muluk, Burak Yağdıran, Mikail Inal
OBJECTIVES: We used three-dimensional computerized tomography (3DCT) to obtain images of Eagle Syndrome (ES) cases and measurements of relevant variables. METHODS: Twenty-five subjects with ES and 25 controls were included in this retrospective study. Styloid process length, anterior-posterior styloid process angulation (Sagittal plane angle) (APA), medial-lateral styloid process angulation (Coronal plane angle) (MLA), tonsil-stiloid distance and carotid-stiloid distance were measured on CT and 3DCT images, and cranial and neck angiography was obtained, from a total of 580 images...
February 13, 2017: Clinical Anatomy
https://www.readbyqxmd.com/read/28185691/thoracic-ultrasound-technique-applications-and-interpretation
#12
REVIEW
Suraj H Rambhia, Catherine A D'Agostino, Ali Noor, Robert Villani, Jason J Naidich, John S Pellerito
Thoracic ultrasound is used at the bedside in emergency and critical care settings. Advantages of ultrasound include rapid real-time, low-cost, diagnostic information that can direct patient care without the use of ionizing radiation. We describe methods on how to perform lung ultrasound, with the intent to educate the radiologist who might otherwise be relatively unfamiliar with thoracic sonography. We describe and depict the normal sonographic appearance of lung anatomy. We also show the sonographic appearance of a wide range of lung and pleural pathologies such as pneumonia, pneumothorax, as well as lung and pleural masses...
December 15, 2016: Current Problems in Diagnostic Radiology
https://www.readbyqxmd.com/read/28185010/evaluation-of-effects-of-anterior-palatoplasty-operation-on-upper-airway-parameters-in-computed-tomography-in-patients-with-pure-snoring-and-obstructive-sleep-apnea-syndrome
#13
Adin Selcuk, Tulay Ozer, Erkan Esen, Fatih Ozdogan, Halil Erdem Ozel, Turgut Yuce, Sebla Caliskan, Sinem Dasli, Nagihan Bilal, Gulden Genc, Selahattin Genc
AIM: To investigate changes in upper airway volume parameters measured by computerized tomography scans in patients with surgically treated by anterior palatoplasty of whom having pure snoring and mild-moderate obstructive sleep apnea. METHOD: A prospective study on consecutively anterior palatoplasty performed pure snoring and obstructive sleep apnea patients. Computerized tomography scans were obtained preoperatively and following anterior palatoplasty procedure to measure changes in upper airway volume...
February 9, 2017: European Archives of Oto-rhino-laryngology
https://www.readbyqxmd.com/read/28183004/an-integrative-framework-for-3d-cobb-angle-measurement-on-ct-images
#14
Xing Huo, Jie Qing Tan, Jun Qian, Li Cheng, Jue Hua Jing, Kun Shao, Bing Nan Li
OBJECTIVE: Measuring the Cobb angle on computed tomography (CT) images remains a challenging but requisite task for clinical diagnoses of scoliosis. Traditionally, clinical practitioners resort to manual demarcation, but this approach is inefficient and subjective. Most of the existing computerized algorithms are two-dimensional (2D) and incapable of multi-angle calibration. METHODS: A novel integrative framework based on curvature features and geometric constraints is proposed to measure three-dimensional (3D)Cobb angles on CT images...
January 29, 2017: Computers in Biology and Medicine
https://www.readbyqxmd.com/read/28177181/radial-endobronchial-ultrasound-for-the-diagnosis-of-peripheral-pulmonary-lesions-a-systematic-review-and-meta-analysis
#15
REVIEW
Muhammad S Ali, William Trick, Benjamin I Mba, Divyanshu Mohananey, Jaskaran Sethi, Ali I Musani
Tissue diagnosis of peripheral pulmonary lesions (PPLs) can be challenging. In the past, flexible bronchoscopy was commonly performed for this purpose but its diagnostic yield is suboptimal. This has led to the development of new bronchoscopic modalities such as radial endobronchial ultrasound (R-EBUS), electromagnetic navigation bronchoscopy (ENB) and virtual bronchoscopy (VB). We performed this meta-analysis using data from previously published R-EBUS studies, to determine its diagnostic yield and other performance characteristics...
February 8, 2017: Respirology: Official Journal of the Asian Pacific Society of Respirology
https://www.readbyqxmd.com/read/28177040/clinical-pathological-and-molecular-evaluations-and-ct-scan-screening-of-coenurosis-coenurus-cerebralis-in-sheep-and-calves
#16
Abdullah Gazioglu, Sami Simsek, Omer Kizil, Ali Osman Ceribasi, Harun Kaya Kesik, Haroon Ahmed
The aims of this study were to diagnose coenurosis by means of computerized tomography (CT) scan imaging and molecular characterization of the CO1 gene using the polymerase chain reaction (PCR). Sheep and calves were necropsied, and CT scans on the cephalic region were performed on the animals. Sections of brain tissue infected with parasites were then stained with hematoxylin and eosin for microscopic examination. Material collected from brain cysts was fixed in 70% ethanol. PCR amplification was carried out using the CO1 mitochondrial gene...
February 6, 2017: Revista Brasileira de Parasitologia Veterinária, Brazilian Journal of Veterinary Parasitology
https://www.readbyqxmd.com/read/28176914/upward-migration-of-a-ureteric-stone-in-a-military-trainer-a-case-report
#17
Moayid Fallatah, Sakher Tahaineh, Rawan Abu Mughli, Seddig M Fallatah
Retrograde ureteric stone migration is an extremely rare phenomenon with only one previously reported case in the literature. We report on a case of upward spontaneous migration of a ureteric stone in a 39-year-old male military trainer in Saudi Arabia who was diagnosed with upper left ureteric stone based on non-contrast spiral computerized tomography kidney ureter bladder (CT-KUB) scan. The plan was to treat the patient conservatively with alpha blockers and oral hydration. Two weeks after treatment started, repeated CT-KUB scan revealed an upward migration of the stone to the left renal calyx...
2017: Research and Reports in Urology
https://www.readbyqxmd.com/read/28165443/video-assisted-thoracoscopic-lobectomy-for-congenital-cystic-adenomatoid-malformations
#18
Amina Selimović, Edo Hasanbegović, Ermina Mujičić, Selma Milišić, Emir Haxhija, Kenan Karavdić, Alen Pilav
Aim The aim was to show rare cases of congenital cystic adenomatoid malformation (CCAM) and the manner of its surgical treatment with video-assisted thoracoscopic surgery (VATS). Methods Two male and one female child, 7, 4 and 3 years of age were treated for symptoms of cough and high temperature in district hospitals. In all three children laboratory blood tests and chest radiography were done. Auscultatory findings showed the presence of pneumonia. Children were treated with appropriate doses of antibiotics...
February 1, 2017: Medicinski Glasnik
https://www.readbyqxmd.com/read/28164198/sialoglycoprotein-isolated-from-the-eggs-of-gadus-morhua-enhances-fracture-healing-in-osteoporotic-mice
#19
Qiping Zhan, Xiong Gui, Fei Wang, Peng Yu, Meihui Zhao, Jingfeng Wang, Changhu Xue
Osteoporosis is a common disease in the elderly, which is related to fracture healing delay. In this study, the effects of treatment with sialoglycoprotein isolated from the eggs of Gadus morhua (Gm-SGP) on tibial fracture healing in ovariectomized (OVX) osteoporotic female C57BL/6J mice for 56 days post-fracture were investigated. The result showed that Gm-SGP treatment significantly increased serum angiogenic factors and bone formation markers on day 5 and 11 post-fracture when compared with the OVX group...
February 6, 2017: Food & Function
https://www.readbyqxmd.com/read/28159494/compensatory-structural-and-functional-adaptation-after-radical-nephrectomy-for-renal-cell-carcinoma-according-to-preoperative-stage-of-chronic-kidney-disease-choi-dk-jung-sb-park-bh-jeong-bc-seo-si-jeon-ss-lee-hm-choi-hy-jeon-hg-j-urol-2015-oct-194-4-910-5
#20
Raman Jay, S B Jung, B H Park, B C Jeong, S I Seo, S S Jeon, H M Lee, H Y Choi, H G Jeon
PURPOSE: We investigated structural hypertrophy and functional hyperfiltration as compensatory adaptations after radical nephrectomy in patients with renal cell carcinoma according to the preoperative chronic kidney disease stage. MATERIALS AND METHODS: We retrospectively identified 543 patients who underwent radical nephrectomy for renal cell carcinoma between 1997 and 2012. Patients were classified according to preoperative glomerular filtration rate as no chronic kidney disease-glomerular filtration rate 90ml/min/1...
February 1, 2017: Urologic Oncology
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