keyword
MENU ▼
Read by QxMD icon Read
search

Tomography

keyword
https://www.readbyqxmd.com/read/28944947/posttraumatic-cerebral-infarction-after-decompressive-craniectomy-for-traumatic-brain-injury-incidence-risk-factors-and-outcome
#1
Tsung-Ming Su, Chu-Mei Lan, Tsung-Han Lee, Fu-Yuan Shih, Shih-Wei Hsu, Cheng-Hsien Lu
AIM: To investigate the incidence, timing, risk factors of posttraumatic cerebral infarction (PTCI) and its influence on mortality in patients with moderate to severe traumatic brain injury (TBI). MATERIAL AND METHODS: After reviewing the medical records and radiographs over a 6-year period, 173 patients with moderate to severe TBI were enrolled to determine the risk factors for the development of PTCI following unilateral decompressive craniectomy (DC). RESULTS: The incidence of PTCI following DC was 31...
July 23, 2017: Turkish Neurosurgery
https://www.readbyqxmd.com/read/28944773/the-effect-of-treatment-with-guanfacine-an-alpha2-adrenergic-agonist-on-dopaminergic-tone-in-tobacco-smokers-an-11-c-flb457-pet-study
#2
Christine M Sandiego, David Matuskey, Meaghan Lavery, Erin McGovern, Yiyun Huang, Nabeel Nabulsi, Jim Ropchan, Marina R Picciotto, Evan D Morris, Sherry A McKee, Kelly P Cosgrove
Guanfacine, a noradrenergic alpha2a agonist, reduced tobacco smoking in a 4-week trial and in animal models has been shown to reduce cortical dopamine release, which is critically involved in the reinforcing effect of tobacco smoking. We measured amphetamine-induced extrastriatal dopamine release before and after treatment with guanfacine with [(11)C]FLB457, a dopamine D2/D3 receptor radiotracer, and positron emission tomography (PET). Sixteen tobacco smokers had one set of [(11)C]FLB457 PET scans on the same day, one before and one at 2...
September 25, 2017: Neuropsychopharmacology: Official Publication of the American College of Neuropsychopharmacology
https://www.readbyqxmd.com/read/28944711/a-hybrid-composite-system-of-biphasic-calcium-phosphate-granules-loaded-with-hyaluronic-acid-gelatin-hydrogel-for-bone-regeneration
#3
Omar Faruq, Boram Kim, Andrew R Padalhin, Gun Hee Lee, Byong-Taek Lee
An ideal bone substitute should be made of biocompatible materials that mimic the structure, characteristics, and functions of natural bone. Many researchers have worked on the fabrication of different bone scaffold systems including ceramic-polymer hybrid system. In the present study, we incorporated hyaluronic acid-gelatin hydrogel to micro-channeled biphasic calcium phosphate granules as a carrier to improve cell attachment and proliferation through highly interconnected porous structure. This hybrid system is composed of ceramic biphasic calcium phosphate granules measuring 1 mm in diameter with seven holes and hyaluronic acid-gelatin hydrogel...
January 1, 2017: Journal of Biomaterials Applications
https://www.readbyqxmd.com/read/28944705/influence-of-carotid-tortuosity-on-internal-carotid-artery-access-time-in-the-treatment-of-acute-ischemic-stroke
#4
Z O Kaymaz, O Nikoubashman, M A Brockmann, M Wiesmann, C Brockmann
Purpose Carotid artery anatomy is thought to influence internal carotid artery access time (ICA-AT) in patients requiring mechanical thrombectomy for acute ischemic stroke. This study investigates the association between ICA-AT and carotid anatomy. Material and methods Computed tomography angiography (CTA) data of 76 consecutive patients presenting with acute ischemic stroke requiring mechanical thrombectomy for middle cerebral artery or carotid T occlusion were evaluated. The supraaortic extracranial vasculature was analyzed regarding take-off angles and curvature of the affected side...
January 1, 2017: Interventional Neuroradiology
https://www.readbyqxmd.com/read/28944597/caloric-restriction-induced-decreases-in-dopamine-receptor-availability-are-associated-with-leptin-concentration
#5
Julia P Dunn, Naji N Abumrad, Robert M Kessler, Bruce W Patterson, Rui Li, Pamela Marks-Shulman, Robyn A Tamboli
OBJECTIVE: It has been previously reported that early after Roux-en-Y-gastric bypass, dopamine (DA) type 2 and 3 receptor (D2/3R) binding potential (BPND ) was decreased from preoperative levels. The current study aimed to determine whether calorie restriction without weight loss modifies D2/3R BPND and whether such changes are explained by neuroendocrine regulation. METHODS: Fifteen females with obesity (BMI = 39 ± 6 kg/m(2) ) were studied before and after ∼10 days of a very-low-calorie-diet (VLCD)...
September 25, 2017: Obesity
https://www.readbyqxmd.com/read/28944572/sizing-of-patent-ductus-arteriosus-in-adults-for-transcatheter-closure-using-the-balloon-pull-through-technique
#6
Nabil A Shafi, Gagan D Singh, Thomas W Smith, Jason H Rogers
OBJECTIVES: To describe a novel balloon sizing technique used during adult transcatheter patent ductus arteriosus (PDA) closure. In addition, to determine the clinical and procedural outcomes in six patients who underwent PDA balloon sizing with subsequent deployment of a PDA occluder device. BACKGROUND: Transcatheter PDA closure in adults has excellent safety and procedural outcomes. However, PDA sizing in adults can be challenging due to variable defect size, high flow state, or anatomical complexity...
September 25, 2017: Catheterization and Cardiovascular Interventions
https://www.readbyqxmd.com/read/28944403/prediction-of-disease-free-survival-by-the-pet-ct-radiomic-signature-in-non-small-cell-lung-cancer-patients-undergoing-surgery
#7
Margarita Kirienko, Luca Cozzi, Lidija Antunovic, Lisa Lozza, Antonella Fogliata, Emanuele Voulaz, Alexia Rossi, Arturo Chiti, Martina Sollini
PURPOSE: Radiomic features derived from the texture analysis of different imaging modalities e show promise in lesion characterisation, response prediction, and prognostication in lung cancer patients. The present study aimed to identify an images-based radiomic signature capable of predicting disease-free survival (DFS) in non-small cell lung cancer (NSCLC) patients undergoing surgery. METHODS: A cohort of 295 patients was selected. Clinical parameters (age, sex, histological type, tumour grade, and stage) were recorded for all patients...
September 24, 2017: European Journal of Nuclear Medicine and Molecular Imaging
https://www.readbyqxmd.com/read/28944379/septic-arthritis-of-the-temporomandibular-joint-after-acute-otitis-media-in-a-child
#8
Kathia Dubron, Jan Meeus, Koenraad Grisar, Stefanie Desmet, Titiaan Dormaar, Yannick Spaey, Constantinus Politis
Septic arthritis of the temporomandibular joint as a complication of acute otitis media is rare in the Western world. This report describes the case of a 7-year-old boy who had pain in his right ear and limited mouth opening, following the onset of acute otitis media. A contrast-enhanced computed tomography scan revealed right-sided mastoiditis and hydrops of the right temporomandibular joint, suggesting septic arthritis. Real-time PCR and microbiologic analysis identified Streptococcus pyogenes and Staphylococcus epidermidis in the joint aspirate...
September 22, 2017: Quintessence International
https://www.readbyqxmd.com/read/28944361/cone-beam-computed-tomography-with-ultra-low-dose-protocols-for-pre-implant-radiographic-assessment-an-in-vitro-study
#9
Robert Liljeholm, Nils Kadesjö, Daniel Benchimol, Kristina Hellén-Halme, Xie-Qi Shi
PURPOSE: To evaluate the ultra-low dose scanning protocols of a newly developed CBCT for pre-implant radiographic assessment. MATERIALS AND METHODS: A total number of 32 CBCT scans were exposed at 90 kV using ProMax 3D's standard (GS) and three ultra-low dose scanning protocols: high, mid and low definition (UL-HD, UL-MD and UL-LD) on eight human dry skulls with simulated soft tissue. The mAs values and the voxel size were 96mAs/200 µm, 28mAs/150 µm, 22.4mAs/200 µm and 7...
2017: European Journal of Oral Implantology
https://www.readbyqxmd.com/read/28944342/a-rare-case-retrocecal-appendicitis-adherent-to-the-liver-capsule
#10
Hasan Börekçi, Sinan Karacabey, Mesut Sipahi, Zeynep Tuğba Özdemir, Mustafa Fatih Erkoç
The cases of appendicitis take an important place in the hospital emergency departments and it must be kept in mind in the differential diagnosis of patients presenting with abdominal pain. Related to cecum, the appendix can be found in many different positions; however, it is mostly observed descending intraperitoneally (31-74%) and at the retrocecal region (26-65%). In this case report, we present the case of a 26-year-old female patient admitted to the emergency room with a colic pain in the right upper quadrant for about 2 days...
2017: Turk J Surg
https://www.readbyqxmd.com/read/28944339/lumbar-petit-s-hernia-a-rare-entity
#11
Fatih Başak, Mustafa Hasbahçeci, Tolga Canbak, Aylin Acar, Abdullah Şişik, Gürhan Baş, Orhan Alimoğlu
Lumbar hernias are rare and diagnostically challenging for surgeons. We present the case of a middle-aged patient who presented with swelling in the left back. Subcutaneous lipoma was included in the differential diagnosis. Following diagnostic studies, computed tomography confirmed left lumbar hernia. Elective surgery was performed, and the results revealed Petit's hernia. The hernia was repaired with mesh.
2017: Turk J Surg
https://www.readbyqxmd.com/read/28944338/intussusception-of-the-bowel-in-adults-two-different-cases
#12
Ergin Arslan, Kasım Çağlayan, Mesut Sipahi, Oktay Banlı, Fatma Gündoğdu, Sevinç Şahin
Intussusception in adults is considered an unusual condition accounting for 5% of all cases of intussusceptions and almost 1%-5% of all cases of bowel obstruction. We present two cases of patients with a complaint of abdominal discomfort and concomitant vomiting who are 43 and 44 years old. Ileocecal intussusception was diagnosed by computed tomography. One patient underwent open whereas the other underwent laparoscopic right hemicolectomy and ileotransversostomy. A histopathological study revealed lipoma in the first case and adenocarcinoma in the second...
2017: Turk J Surg
https://www.readbyqxmd.com/read/28944325/comparison-of-contrast-enhanced-ct-with-diffusion-weighted-mri-in-the-evaluation-of-patients-with-acute-biliary-pancreatitis
#13
Mehmet İlhan, Muhammet Üçüncü, Ali Fuat Kaan Gök, Gizem Öner, Elidor Agolli, Bahar Canbay, Barış Bakır, Recep Güloğlu, Cemalettin Ertekin
OBJECTIVE: The aim of this study was to compare contrast-enhanced computed tomography with diffusion-weighted magnetic resonance imaging in the evaluation of patients with acute biliary pancreatitis. MATERIAL AND METHODS: Fifty-three patients diagnosed with acute biliary pancreatitis, between February 2012 and July 2015, were evaluated using diffusion-weighted magnetic resonance imaging and magnetic resonance cholangiopancreatography to explain the elevation of cholestasis enzymes and bilirubin levels at "stanbul University...
2017: Turk J Surg
https://www.readbyqxmd.com/read/28944200/optical-coherence-tomography-angiography-of-optic-disc-perfusion-in-non-arteritic-anterior-ischemic-optic-neuropathy
#14
Jia-Wen Ling, Xue Yin, Qian-Yi Lu, Yi-Yi Chen, Pei-Rong Lu
AIM: To compare the optic disc blood flow of non-arteritic ischemic optic neuropathy (NAION) eyes with normal eyes. METHODS: The optic disc blood flow densities of diagnosed non-acute phase NAION eyes (21 eyes, 14 individuals) and normal eyes (19 eyes, 12 individuals) were detected via Optovue optical coherence tomography angiography (OCTA). The optic disc blood flow was measured via Image J software. Correlations between optic disc perfusion and visual function variables were assessed by linear regression analysis...
2017: International Journal of Ophthalmology
https://www.readbyqxmd.com/read/28944198/long-term-outcome-of-highly-myopic-foveoschisis-treated-by-vitrectomy-with-or-without-gas-tamponade
#15
Li-Na Yun, Yi-Qiao Xing
AIM: To evaluate the long-term safety and efficacy of vitrectomy and internal limiting membrane (ILM) peeling with or without gas tamponade for highly myopic foveoschisis. METHODS: We performed an open-label, observer-blinded clinical trial of 85 patients with myopic foveoschisis between 2000 and 2012. Patients were randomly allocated to one of two groups, those who received vitrectomy and ILM peeling without gas tamponade (no-gas group) or those who with gas tamponade (gas group) and follow up at least 5y...
2017: International Journal of Ophthalmology
https://www.readbyqxmd.com/read/28944197/influence-of-corneal-power-on-circumpapillary-retinal-nerve-fiber-layer-and-optic-nerve-head-measurements-by-spectral-domain-optical-coherence-tomography
#16
Kazunori Hirasawa, Nobuyuki Shoji
AIM: To evaluate the influence of corneal power on circumpapillary retinal nerve fiber layer (cpRNFL) and optic nerve head (ONH) measurements by spectral-domain optical coherence tomography (SD-OCT). METHODS: Twenty-five eyes of 25 healthy participants (mean age 23.6±3.6y) were imaged by SD-OCT using horizontal raster scans. Disposable soft contact lenses of different powers (from -11 to +5 diopters including 0 diopter) were worn to induce 2-diopter changes in corneal power...
2017: International Journal of Ophthalmology
https://www.readbyqxmd.com/read/28944130/brain-computed-tomography-angiography-as-an-ancillary-test-in-the-confirmation-of-brain-death
#17
Homa Sadeghian, Mohammad Ali Raeisi, Parviz Dolati, Rouzbeh Motiei-Langroudi
Introduction Brain death (BD) is the irreversible termination of the functioning of the brain. The diagnosis should be first made by clinical criteria and confirmed by using paraclinical confirmatory techniques (ancillary tests). While conventional brain angiography remains the standard method of choice, computed tomography angiography (CTA) has emerged as an alternative method. In this study, we tried to evaluate the accuracy of CTA for the diagnosis of BD. Methods In this study, we included nine patients with a clinical diagnosis of BD, confirmed by electroencephalography (EEG)...
July 19, 2017: Curēus
https://www.readbyqxmd.com/read/28944129/endoscopic-assisted-ommaya-reservoir-placement-technical-note
#18
Jessica Lane, Brad E Zacharia
Ommaya reservoir placement has been an option for patients requiring cerebrospinal fluid (CSF) access since the 1960s. It is preferred to repeat lumbar punctures, both in terms of patient comfort and the consistency of intrathecal drug concentration. Technological developments have advanced the placement technique, allowing for better accuracy and reduced complications. Freehand placement was first augmented with pneumoencephalograms and intraoperative computerized tomography (CT), then with optical-based navigation, and finally by utilizing electromagnetic neuronavigation...
July 19, 2017: Curēus
https://www.readbyqxmd.com/read/28944123/preventing-cushing-iatrogenic-cushing-syndrome-due-to-ritonavir-fluticasone-interaction
#19
Fasil Tiruneh, Ahmad Awan, Abiot Didana, Saumil Doshi
Ritonavir is commonly used in low doses to boost plasma levels of protease inhibitors in patients with human immunodeficiency virus (HIV) infections. It is also a potent inhibitor of cytochrome P450. We present a 50-year-old African American male with past medical history of HIV on highly active antiretroviral therapy (HAART), which also included ritonavir and long standing asthma that has been treated with inhaled fluticasone, who presented with back pain. He had central obesity, prominent abdominal striae and wasted extremities on physical examination...
July 17, 2017: Curēus
https://www.readbyqxmd.com/read/28944120/treatment-of-male-breast-cancer-by-dual-human-epidermal-growth-factor-receptor-2-her2-blockade-and-response-prediction-using-novel-optical-tomography-imaging-a-case-report
#20
Debasmita Saha, Susan Tannenbaum, Quing Zhu
Male breast cancer, although rare, is on the rise. Prospective clinical trials are unlikely and current management mirrors that of post-menopausal women. Neoadjuvant chemotherapy is widely used and pathologic complete response (pCR) predicts long-term survival. The addition of dual HER2 (human epidermal growth factor receptor 2) blockade has shown the highest pCR rates; however, there is no published data of this approach in men. Also, newer monitoring tools are necessary during a neoadjuvant therapy to help personalize treatment...
July 17, 2017: Curēus
keyword
keyword
64632
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"