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Computed tomography

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https://www.readbyqxmd.com/read/28645011/transient-portal-venous-gas-associated-with-reversible-non-occlusive-mesenteric-ischemia-a-case-report
#1
Gaël Piton, Brice Paquette, Eric Delabrousse, Gilles Capellier
OBJECTIVES: To report the utility of abdominal ultrasonography (US) to identify the presence of portal venous gas (PVG) during non-occlusive mesenteric ischemia (NOMI), and to follow the disappearance of portal venous gas after resolution of the NOMI. DATA SOURCES: This was a clinical observation of a patient, with images of abdominal computed tomography (CT), and a video of portal venous gas identified by ultrasonography. DATA SYNTHESIS: We describe the case of an adult patient admitted to our ICU for NOMI developing 48h after cardiac surgery...
June 16, 2017: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/28644887/sarcopenia-is-a-predictive-factor-for-intestinal-resection-in-admitted-patients-with-crohn-s-disease
#2
Shigeki Bamba, Masaya Sasaki, Azusa Takaoka, Kenichiro Takahashi, Hirotsugu Imaeda, Atsushi Nishida, Osamu Inatomi, Mitsushige Sugimoto, Akira Andoh
The relationship between skeletal muscle volume and the prognosis of patients with inflammatory bowel disease (IBD) remains undetermined. We conducted a retrospective study of 72 IBD patients who were admitted to the hospital due to disease exacerbation. We enrolled IBD patients who had undergone abdominal computed tomography and assessed the nutritional indices, such as the Onodera's prognostic nutritional index (O-PNI) and the controlling nutritional status (CONUT) index. The L3 skeletal muscle index (SMI), which is the ratio of the cross-sectional area of skeletal muscles at the level of the third lumbar (L3) vertebra to the height squared, was used to identify sarcopenia...
2017: PloS One
https://www.readbyqxmd.com/read/28644802/fully-non-linear-sp3-approximation-based-fluorescence-optical-tomography
#3
Naren Naik, Nishigandha Patil, Yamini Yadav, Jerry Eriksson, Asima Pradhan
In fluorescence optical tomography, many works in literature focus on the linear reconstruction problem to obtain the fluorescent yield or the linearized reconstruction problem to obtain the absorption coefficient. The nonlinear reconstruction problem, to reconstruct the fluorophore absorption coefficient, is of interest in imaging studies as it presents the possibility of better reconstructions owing to a more appropriate model. Accurate and computationally efficient forward models are also critical in the reconstruction process...
June 21, 2017: IEEE Transactions on Medical Imaging
https://www.readbyqxmd.com/read/28644772/risk-stratification-for-second-primary-lung-cancer
#4
Summer S Han, Gabriel A Rivera, Martin C Tammemägi, Sylvia K Plevritis, Scarlett L Gomez, Iona Cheng, Heather A Wakelee
Purpose This study estimated the 10-year risk of developing second primary lung cancer (SPLC) among survivors of initial primary lung cancer (IPLC) and evaluated the clinical utility of the risk prediction model for selecting eligibility criteria for screening. Methods SEER data were used to identify a population-based cohort of 20,032 participants diagnosed with IPLC between 1988 and 2003 and who survived ≥ 5 years after the initial diagnosis. We used a proportional subdistribution hazards model to estimate the 10-year risk of developing SPLC among survivors of lung cancer LC in the presence of competing risks...
June 23, 2017: Journal of Clinical Oncology: Official Journal of the American Society of Clinical Oncology
https://www.readbyqxmd.com/read/28644736/asymptomatic-microscopic-hematuria-as-a-predictor-of-neoplasia-in-the-urinary-tract
#5
Maria Ordell Sundelin, Jørgen Bjerggaard Jensen
OBJECTIVE: The Danish hematuria guidelines were revised in January 2016. Before revision, it was recommended that asymptomatic microscopic hematuria in patients more than 40 years old should be routinely urologically investigated. In the revised guidelines, patients with asymptomatic microscopic hematuria are not recommended to be investigated, irrespective of age. The purpose of this study was to investigate whether asymptomatic microscopic hematuria was predictive of neoplasia of the urinary tract in a referred cohort of patients...
June 23, 2017: Scandinavian Journal of Urology
https://www.readbyqxmd.com/read/28644431/an-in-vitro-study-on-the-efficacy-of-removing-calcium-hydroxide-from-curved-root-canal-systems-in-root-canal-therapy
#6
Ying Wang, Li-Yang Guo, Hong-Zhi Fang, Wen-Ling Zou, Ying-Ming Yang, Yuan Gao, Hui Yang, Tao Hu
To compare the efficacy of various irrigants (citric acid, ethylenediaminetetraacetic acid (EDTA) and NaOCl) and techniques in removing Ca(OH)2 in two types of curved root canal systems, simulated root canals with specific curvatures were used to investigate the effects of different irrigants and instruments on Ca(OH)2 removal. The optimal methods were verified on extracted human teeth. Simulated root canals were assigned to one of two groups based on the irrigation solution: 10% citric acid or 2.5% NaOCl. Each group was divided into four subgroups according to the technique used to remove Ca(OH)2...
June 23, 2017: International Journal of Oral Science
https://www.readbyqxmd.com/read/28644311/hemobilia-an-uncommon-but-notable-cause-of-upper-gastrointestinal-bleeding
#7
Scott Cathcart, John W Birk, Michael Tadros, Micheal Schuster
GOAL AND BACKGROUND: A literature review to improve practitioners' knowledge and performance concerning the epidemiology, diagnosis, and management of hemobilia. STUDY: A search of Pubmed, Google Scholar, and Medline was conducted using the keyword hemobilia and relevant articles were reviewed and analyzed. The findings pertaining to hemobilia etiology, investigation, and management techniques were considered and organized by clinicians practiced in hemobilia. RESULTS: The majority of current hemobilia cases have an iatrogenic cause from either bile duct or liver manipulation...
June 21, 2017: Journal of Clinical Gastroenterology
https://www.readbyqxmd.com/read/28644260/intravenous-alteplase-for-acute-stroke-and-pulmonary-embolism-in-a-patient-with-recent-abdominoplasty
#8
Michael E Christiansen, Gyanendra Kumar, Raman C Mahabir, Richard A Helmers, Bernard R Bendok, Cumara B O'Carroll
INTRODUCTION: Major surgery in the past 14 days is a relative contraindication to treatment of acute stroke with intravenous (IV) alteplase. The 2016 American Heart Association/American Stroke Association scientific statement discussing inclusion and exclusion criteria for alteplase in acute stroke allows for provider judgment citing a lack of evidence to support surgery as an absolute contraindication. CASE REPORT: A 59-year-old woman presented with acute left hemiparesis, dysarthria, and acute respiratory failure...
July 2017: Neurologist
https://www.readbyqxmd.com/read/28644201/insular-epilepsy-semiology-and-noninvasive-investigations
#9
Sami Obaid, Younes Zerouali, Dang Khoa Nguyen
In this review, authors discuss the semiology and noninvasive investigations of insular epilepsy, an underrecognized type of epilepsy, which may mimic other focal epilepsies. In line with the various functions of the insula and its widespread network of connections, insular epilepsy may feature a variety of early ictal manifestations from somatosensory, visceral, olfactory, gustatory, or vestibular manifestations. Depending on propagation pathways, insular seizures may also include altered consciousness, dystonic posturing, complex motor behaviors, and even autonomic features...
July 2017: Journal of Clinical Neurophysiology: Official Publication of the American Electroencephalographic Society
https://www.readbyqxmd.com/read/28644156/clinical-case-of-the-month-a-57-year-old-man-with-an-axillary-mass
#10
Palak Desai, Andrew Myers, Brian Boulmay, Fred A Lopez
A 57-year-old man presented to the surgical oncology clinic with a mildly tender mass under his right arm. Four years prior, the patient had a melanoma removed from his right shoulder along with an ipsilateral right axillary sentinel lymph sampling. Computed tomography (CT) scan was negative for metastatic disease at that time. The patient did not undergo completion axillary node dissection and was lost to follow-up. The patient was originally from Australia, did not tan but reported multiple sunburns before age 18...
May 2017: Journal of the Louisiana State Medical Society: Official Organ of the Louisiana State Medical Society
https://www.readbyqxmd.com/read/28644124/scapulothoracic-joint-dysfunction
#11
Joseph Ugorji, Stephen J Pomeranz
Scapulothoracic derangements are often overlooked and hidden within the clinical fog created by complex back, shoulder, and rib symptoms. This study reviewed 200 magnetic resonance imaging and computed tomography studies dedicated for scapular imaging between January 2010 and May 2016. This article discusses scapulothoracic pathologies and imaging findings.
2017: Journal of Surgical Orthopaedic Advances
https://www.readbyqxmd.com/read/28644123/pin-malposition-in-external-fixator-stabilization-of-combat-related-pelvic-fractures
#12
Mark P Coseo, Dustin J Schuett, Kevin M Kuhn, Joseph Bellamy
The purpose of this study was to compare the accuracy of pin placement in patients with unstable pelvic fractures undergoing either iliac crest or supra-acetabular external fixation. A retrospective review was performed of computed tomography (CT) scans and injury characteristics for all patients presenting to a North Atlantic Treaty Organization Medical Treatment Facility with data entered into the Department of Defense Trauma Registry from January 2008 to October 2013 who underwent pelvic external fixation for unstable pelvic ring injuries...
2017: Journal of Surgical Orthopaedic Advances
https://www.readbyqxmd.com/read/28643923/micro-anatomical-responses-in-periodontal-complexes-of-mice-to-calibrated-orthodontic-forces-on-the-crown
#13
A Pal, L Chen, L Yang, F Yang, B Meng, A H Jheon, S P Ho
OBJECTIVE: Correlating mechanical forces with quantifiable physical changes in the dentoalveolar complex. SETTING AND SAMPLE POPULATION: Male 6-week C57BL/6 mice (N=3), micro X-ray-computed tomography; post-analysis software to extract physical changes in periodontal ligament (PDL)-space. MATERIALS AND METHODS: Silicone-elastic bands were placed between maxillary molars for 1 week, with the contralateral side as internal control. Average displacements between crowns and roots, and changes in PDL-spaces were evaluated by registering X-ray tomograms of experimental and control hemi-maxillae...
June 2017: Orthodontics & Craniofacial Research
https://www.readbyqxmd.com/read/28643920/analysis-of-polycaprolactone-scaffolds-fabricated-via-precision-extrusion-deposition-for-control-of-craniofacial-tissue-mineralization
#14
C W Fedore, L Y L Tse, H K Nam, K L Barton, N E Hatch
OBJECTIVES: Recurrence of cranial bone fusion following surgical resection in craniosynostosis patients commonly requires additional surgical procedures. Surgical implantation of engineered 3D scaffolds that control tissue mineralization could be utilized to diminish recurrence of fusion. This study investigated the ability of composite scaffolds to control tissue mineralization when cultured in vitro. SETTING AND SAMPLE POPULATION: Precision-engineered scaffolds with calvarial cells were cultured in vitro at the Department of Orthodontics and Pediatric Dentistry, University of Michigan...
June 2017: Orthodontics & Craniofacial Research
https://www.readbyqxmd.com/read/28643904/pth-1-34-induced-alterations-predispose-the-mandibular-condylar-cartilage-to-mineralization
#15
E H Dutra, M H O'Brien, T Gutierrez, A Lima, R Nanda, S Yadav
OBJECTIVE: To study the effects of intermittent parathyroid hormone (PTH [1-34]) on the mandibular condylar cartilage (MCC) and subchondral bone in adult female mice. MATERIALS AND METHODS: Twenty-two, 20-week-old female mice were used for in vivo experiments. The experimental mice (n=11) received daily intraperitoneal injections of PTH [1-34] for 3 weeks, while control mice (n=11) received intraperitoneal injections of 0.9% saline solution. Mice were euthanized and then micro-computed tomography (micro-CT); histology and immunostaining were carried out to assess the response...
June 2017: Orthodontics & Craniofacial Research
https://www.readbyqxmd.com/read/28643750/evaluation-of-clinical-process-in-osteosarcoma-patients-treated-with-chemotherapy-including-cisplatin-adriamycin-ifosfamide-and-etoposide-and-determination-of-the-treatment-sequels-in-a-long-term-11-year-follow-up
#16
Mozaffar Aznab, Maryam Hematti
AIM: The aim of this study was to evaluate the effect of adding etoposide and ifosfamide chemotherapy drugs to treatment regimen of patients affected with osteosarcoma and to determine the clinical process and response to treatment during a follow-up period of 11 years. MATERIALS AND METHODS: Forty patients with osteosarcoma participated in this study from July 2005 to 2016. Treatments were started based on the following schema and after initial examinations including biochemical profile, checking for lung metastasis by simple radiography, chest computed tomography scan, and bones scan...
April 2017: Journal of Cancer Research and Therapeutics
https://www.readbyqxmd.com/read/28643737/changes-in-pharyngeal-constrictor-volumes-during-head-and-neck-radiation-therapy-implications-for-dose-delivery
#17
Akila Kumarasiri, Chang Liu, Mona Kamal, Correen Fraser, Stephen Brown, Indrin J Chetty, Jinkoo Kim, Farzan Siddiqui
OBJECTIVE: The objective of this study was to evaluate the anatomical changes and associated dosimetric consequences to pharyngeal constrictor muscles (PCMs) that occur during head and neck (H and N) radiotherapy (RT). MATERIALS AND METHODS: A cohort of 13 oropharyngeal cancer patients with daily cone beam computed tomography (CBCT) was retrospectively studied. On every 5th CBCT image, PCM was manually delineated by a radiation oncologist. The anterior-posterior PCM thickness was measured at the midline level of C3 vertebral body...
April 2017: Journal of Cancer Research and Therapeutics
https://www.readbyqxmd.com/read/28643722/endogenous-endophthalmitis-caused-by-cryptococcus-neoformans-var-gattii-mimicking-choroidal-tumor-from-positron-emission-tomography-computed-tomography-to-histopathology
#18
Chun-Ju Lin, Wen-Lu Chen, Jane-Ming Lin, Peng-Tai Tien, Yi-Yu Tsai
A 60-year-old immunocompetent female with pneumonia history about 10 years ago suffered from blurred vision overall survival for 3 weeks. Common cold with headache and unintentional body weight loss was also noted recently. Choroidal detachment simulating choroidal tumor was observed in the temporal quadrant. The 18F-fluoro-2-deoxyglucose (FDG) positron-emission tomography/computed tomography (CT) scan showed focal, mild to moderate FDG uptake in the left lateral orbit, and an enhanced lesion was seen on the recent CT scan...
June 2017: Indian Journal of Ophthalmology
https://www.readbyqxmd.com/read/28643616/advanced-neuroimaging-of-carbon-monoxide-poisoning
#19
Marco Varrassi, Alessandra Di Sibio, Camilla Gianneramo, Marco Perri, Giorgia Saltelli, Alessandra Splendiani, Carlo Masciocchi
Carbon monoxide (CO) inhalation is nowadays the most common cause of fatal poisoning worldwide. CO binds to haemoglobin 230-270 times more avidly than oxygen, thus leading to formation of carboxyhaemoglobin with subsequent reduction of tissue oxygenation. Brain is mainly affected due to its high oxygen requirement. Up to two-thirds of patients who survive the acute phase of this pathology present a delayed leukoencephalopathy, usually in a period ranging from two to 40 days. White matter damage closely relates to long-term prognosis of these patients...
January 1, 2017: Neuroradiology Journal
https://www.readbyqxmd.com/read/28643532/dermatomyositis-with-renal-infarction-a-case-report-and-literature-review
#20
Ti Zhang, Xin Liu, Huji Xu
Renal infarction is a rare clinical entity that is not easily detected by low-sensitivity ultrasound. We herein report a case of dermatomyositis with renal infarction detected during corticosteroid therapy. The patient was followed up for 18 months. A woman who was clinically diagnosed with dermatomyositis complained of severe pain in the right flank of the low back and abdomen, accompanied by nausea and vomiting during corticosteroid therapy. Based on the findings of routine blood tests, abdominal X-ray radiography, and abdominal ultrasound, the patient was diagnosed with acute gastroenteritis and treated with levofloxacin...
January 1, 2017: Journal of International Medical Research
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