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Computerized tomography

Deng Xiang, Jiannan He, Zimeng Fan, Fangfang Xiong, Gang Liu, Sufen Chen, Wu Wen, Jianfeng Li, Junhua Ai, Renhua Wan, Gongxian Wang, Jun Shi
RATIONALE: Situs inversus totalis (SIT) is a rare anatomical variation of the internal organs, and solid pseudopapillary tumor of the pancreas (SPTP) is a rare tissue type of pancreatic tumors, classified as benign or low-grade malignancy. However, to our knowledge, a patient with SIT and SPTP is extremely rare and has never been reported. PATIENT CONCERNS: We retrospectively analyzed a case of SIT with SPTP in a 45-year-old woman. The main complaints were abdominal pain and sensation of heaviness for 2 weeks...
March 2018: Medicine (Baltimore)
Geor Bakker, Claudia Vingerhoets, Daphne Boucherie, Matthan Caan, Oswald Bloemen, Jos Eersels, Jan Booij, Thérèse van Amelsvoort
Background: It is still unclear which underlying mechanisms are involved in cognitive deficits of psychotic disorders. Pro-cognitive effects of muscarinic M1 receptor agonists suggest alterations in M1 receptor functioning may modulate these symptoms. Post mortem studies in patients with schizophrenia have shown significantly reduced M1 receptor expression rates in the dorsolateral prefrontal cortex (DLPFC) compared to controls. To date no in-vivo examinations of M1 receptor binding in relation to cognitive impairments have been done...
2018: NeuroImage: Clinical
Alvaro Proaño, David Bui, José W López, Nancy M Vu, Marjory A Bravard, Gwenyth O Lee, Brian H Tracey, Ziyue Xu, Germán Comina, Eduardo Ticona, Daniel J Mollura, Jon S Friedland, David A J Moore, Carlton A Evans, Philip Caligiuri, Robert H Gilman
BACKGROUND: Cough frequency, and its duration, is a lab-free biomarker that can be used in low-resource settings and has been associated with transmission and treatment response. Radiological characteristics associated with increased cough frequency may be important in understanding transmission. The relationship between cough frequency and cavitary lung disease has never been studied. METHODS: We analyzed 41 human immunodeficiency virus-negative adults with culture-confirmed, drug-susceptible pulmonary tuberculosis throughout treatment...
March 17, 2018: Chest
William F Paolo, Rhonaldo Silaban, Long Nguyen, Susan Wojcik, William Grant
OBJECTIVE: Computerized tomography (CT) is often employed to diagnose or rule out certain suspected abdominal pathologies. The aim of this study is to compare emergency physicians' estimated post-test disease probabilities to the probabilities obtained for similar diagnostic tests as reported in the literature. METHODS: Physicians were asked to estimate pre and posttest probabilities before and after CT scan results in patients with nontraumatic abdominal and pelvic pain...
February 27, 2018: American Journal of Emergency Medicine
Tomas Vedin, Sebastian Svensson, Marcus Edelhamre, Mathias Karlsson, Mikael Bergenheim, Per-Anders Larsson
PURPOSE: Head trauma is common in the emergency department. Identifying the few patients with serious injuries is time consuming and leads to many computerized tomographies (CTs). Reducing the number of CTs would reduce cost and radiation. The aim of this study was to evaluate the characteristics of adults with head trauma over a 1-year period to identify clinical features predicting intracranial hemorrhage. METHODS: Medical record data have been collected retrospectively in adult patients with traumatic brain injury...
March 17, 2018: European Journal of Trauma and Emergency Surgery: Official Publication of the European Trauma Society
Yawei Gu, Yunlang She, Chenyang Dai, Yijiu Ren, Ziwen Fan, Huiyuan Zhu, Xiwen Sun, Huikang Xie, Gening Jiang, Dong Xie, Chang Chen
BACKGROUND: Some clinical N0 lung adenocarcinoma have been pathologically diagnosed as N1 or N2. To improve the preoperative diagnostic accuracy of lymph node (LN) disease, we developed a prediction model for LN metastasis in cT1N0M0 lung adenocarcinoma based on computed tomography (CT) texture analysis and clinical characteristics to estimate the probability of LN metastasis. METHODS: The records of 501 consecutive patients with cT1N0M0 lung adenocarcinoma who underwent CT scan and pulmonary resection with systematic lymph nodes dissection or lymph nodes sampling were reviewed...
March 14, 2018: Annals of Thoracic Surgery
Taina Nykänen, Erno Peltola, Leena Kylänpää, Marianne Udd
PURPOSE: To evaluate the safety, efficacy, and feasibility of transcatheter arterial embolization (TAE) in the treatment of lower gastrointestinal bleeding (LGIB). METHODS: Study group comprised all patients receiving angiography for LGIB in the Helsinki University Hospital during the period of 2004-2016. Hospital medical records provided the study data. Rebleeding, complication, and mortality rates (≤ 30 days) were the primary outcomes. Secondary outcomes included need for blood transfusions, durations of intensive care unit and hospital admissions, incidence of delayed rebleeding, and long-term complications, as well as overall survival...
March 16, 2018: Journal of Gastrointestinal Surgery: Official Journal of the Society for Surgery of the Alimentary Tract
Jang W Yoon, Sara Ganaha, Clarence Watridge
BACKGROUND: Congenital agenesis of the inferior vena cava (IVC) can lead to the development of a prominent venous collateral system within and around the spine due to the development of venous collaterals. Surgery on such patients can harbor the risk of catastrophic bleeding or decompensation of a delicate venous drainage pattern during spinal manipulation or even epidural exploration. CASE DESCRIPTION: A 49-year old man with a congenital agenesis of the IVC presented with signs and symptoms of an L5 radiculopathy...
March 12, 2018: World Neurosurgery
Xiaopeng Yang, Jae Do Yang, Hong Pil Hwang, Hee Chul Yu, Sungwoo Ahn, Bong-Wan Kim, Heecheon You
BACKGROUND AND OBJECTIVE: The present study developed an effective surgical planning method consisting of a liver extraction stage, a vessel extraction stage, and a liver segment classification stage based on abdominal computerized tomography (CT) images. METHODS: An automatic seed point identification method, customized level set methods, and an automated thresholding method were applied in this study to extraction of the liver, portal vein (PV), and hepatic vein (HV) from CT images...
May 2018: Computer Methods and Programs in Biomedicine
C T Bahadir, G C Ecemis, H Atmaca
PURPOSE: The aim of this study was to investigate the possible association of insulin-like growth factor-1 (IGF-1) with the pathogenesis of non-functioning adrenocortical adenomas (NFAs). METHODS: This study included 50 female patients (mean age 54 years) with NFAs, 55 patients (mean age 48 years; 20 male, 35 female) with acromegaly and 38 female control subjects (mean age 58 years). Body mass index (BMI) and waist circumference (WC) of the subjects were recorded and blood samples for IGF-1 were taken...
March 14, 2018: Journal of Endocrinological Investigation
Xuan Du, Wen Lu, Zijun Lu, Xinyu Shao, Chunhong Hu, Bimin Shi
Background: To study the effectiveness of exenatide with metformin and sequential treatment with exenatide and glargine added to metformin and their influence on insulin sensitivity and adipose distribution. Methods: 20 newly diagnosed obese type 2 diabetic patients were enrolled, and 2-month washout treatment of metformin, 6-month exenatide treatment, and 6-month glargine treatment were administrated sequentially accompanied with previous metformin. Glucolipid metabolic parameters were compared among groups...
2018: Journal of Diabetes Research
Furkan Diren, Serra Sencer, Tayfun Hakan
Objective: Arteriovenous malformation (AVM) is the most common form of intracranial vascular malformations in adults. Intracranial pediatric AVMs are rare. AVM located in the vicinity of the brain stem in children are even more rare. Case report: This study reports a rare case of acute obstructive hydrocephalus following aqueductal stenosis caused by an unruptured grade IV perimesencephalic arteriovenous malformation. An 11-year-old boy admitted to the hospital with progressive headache, nausea and vomiting throughout a month...
2018: Open Neuroimaging Journal
A Skiada, C Lass-Floerl, N Klimko, A Ibrahim, E Roilides, G Petrikkos
The diagnosis and treatment of mucormycosis are challenging. The incidence of the disease seems to be increasing. Hematological malignancies are the most common underlying disease in countries with high income and uncontrolled diabetes in developing countries. Clinical approach to diagnosis lacks sensitivity and specificity. Radiologically, multiple (≥10) nodules and pleural effusion are reportedly associated with pulmonary mucormycosis. Another finding on computerized tomography (CT) scan, which seems to indicate the presence of mucormycosis, is the reverse halo sign...
April 1, 2018: Medical Mycology: Official Publication of the International Society for Human and Animal Mycology
Marco Tubaro
No abstract text is available yet for this article.
February 2018: Journal of Cardiovascular Medicine
William Becker, Philippe Hujoel, Burton E Becker
BACKGROUND: Numerous studies indicate implants placed immediately after extraction or with minimally invasive procedures have excellent long-term success and survival rates. There is general agreement that implants must be stable after implant placement. This study evaluated implant stability changes from the time of implant placement to second stage (prior to restoration). Resonance frequency analysis (RFA) was determined for two commercially available units (Osstell, Osstell USA, Columbia, MD and Penguin, Penguin Integration Diagnostics, Sweden)...
March 13, 2018: Clinical Implant Dentistry and related Research
Cristiano Tomasi, Mauro Donati, Denis Cecchinato, Isacco Szathvary, Enrico Corrà, Jan Lindhe
OBJECTIVE: To examine if (i) characteristics of the fresh extraction socket site influenced subsequent dimensional alterations and (ii) placement of deproteinized bovine mineral in the socket affected volumetric change during healing. MATERIALS AND METHODS: Twenty seven subjects and 28 extraction sites were included. Immediately after the removal of the tooth and after 6 months of healing, stone and virtual models of the jaw were produced. A cone beam computerized tomography scan was obtained immediately after extraction and the thickness of the buccal bone wall at the extraction site was measured...
March 13, 2018: Clinical Oral Implants Research
Benito Velayos, L Del Olmo, L Merino, M Valsero, J M González
INTRODUCTION: The development of novel mechanical endoscopic closure systems allows now the management of some gastrointestinal fistula types in a minimally invasive way. However, the correct location of the fistulous tract is essential to achieve successful endoscopic closure. CASE REPORT: A 69-year-old woman with high risk for surgery presented with recurrent cystitis, pneumaturia, and enteruria 2 months after medical-treated diverticulitis. Computerized tomography demonstrated colovesical fistula but colonoscopy could not locate the fistulous opening...
March 12, 2018: International Journal of Colorectal Disease
Navid Pourtaheri, Bahman Guyuron
PURPOSE: To correlate the location and size of supraorbital notches (SON) and foramen (SOF) with migraine headache symptoms in a migraine patient population. METHODS: A retrospective review was performed on consecutive patients who were candidates for frontal migraine surgery with available preoperative computed tomography (CT) images of the face/perinasal sinuses. The supraorbital anatomy from CT images was analyzed and correlated with presenting migraine headache symptoms...
February 14, 2018: Journal of Plastic, Reconstructive & Aesthetic Surgery: JPRAS
Connie L Parks, Keith L Monson
This study employed an automated facial recognition system as a means of objectively evaluating biometric correspondence between a ReFace facial approximation and the computed tomography (CT) derived ground truth skin surface of the same individual. High rates of biometric correspondence were observed, irrespective of rank class (Rk ) or demographic cohort examined. Overall, 48% of the test subjects' ReFace approximation probes (n=96) were matched to his or her corresponding ground truth skin surface image at R1 , a rank indicating a high degree of biometric correspondence and a potential positive identification...
February 27, 2018: Forensic Science International
Lorna G Keenan, Kathy Rock, Aini Azmi, Osama Salib, Charles Gillham, Orla McArdle
INTRODUCTION: Previous studies have investigated the anatomical distribution of para-aortic lymph nodes (PAN) in patients with cervical cancer. However, an atlas for accurate clinical target volume (CTV) delineation has yet to be defined. The purpose of this study was to design and verify a computerized tomography (CT) atlas to provide guidance for contouring the PAN CTV in patients with cervical cancer. MATERIALS AND METHODS: This prospective study included 21 cervical cancer patients (design cohort) with 39 pathological PAN identified on (18)F-FDG PET-CT...
March 6, 2018: Radiotherapy and Oncology: Journal of the European Society for Therapeutic Radiology and Oncology
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