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https://www.readbyqxmd.com/read/29626289/dosimetric-changes-with-computed-tomography-automatic-tube-current-modulation-techniques
#1
Sofia Spampinato, Anna Maria Gueli, Pietro Milone, Luigi Angelo Raffaele
The study is aimed at a verification of dose changes for a computed tomography automatic tube-current modulation (ATCM) technique. For this purpose, anthropomorphic phantom and Gafchromic® XR-QA2 films were used. Radiochromic films were cut according to the shape of two thorax regions. The ATCM algorithm is based on noise index (NI) and three exam protocols with different NI were chosen, of which one was a reference. Results were compared with dose values displayed by the console and with Poisson statistics...
April 6, 2018: Radiological Physics and Technology
https://www.readbyqxmd.com/read/29528016/liver-transplant-and-reexpansion-pulmonary-edema-a-case-report
#2
Sibel Kara, Nazan Sen, Sule Akcay, Gokhan Moray, Murat Kus, Mehmet Haberal
Hydrothorax occurs frequently in patients with endstage liver disease and usually requires drainage of pulmonary effusion during the hepatectomy phase of liver transplant. Reexpansion pulmonary edema is a rare but potentially fatal complication seen after rapid reexpansion of the collapsed lung following thoracentesis of pleural fluid or tube drainage of pneumothorax. This condition, which manifests with various degrees of clinical severity, is rarely reported following liver transplantation. Herein, we present a 62-year-old male patient who developed reexpansion pulmonary edema after drainage of massive pleural effusion, which caused a total collapse in the right hemithorax during liver transplant...
March 2018: Experimental and Clinical Transplantation
https://www.readbyqxmd.com/read/29523026/outcome-after-stenting-and-d%C3%A3-bridement-for-spontaneous-esophageal-rupture
#3
Tobias Hauge, Ole Christian Kleven, Egil Johnson, Bjørn Hofstad, Hans-Olaf Johannessen
OBJECTIVES: Surgical repair has been the most common treatment of esophageal effort rupture (Boerhaave syndrome). Stent-induced sealing of the perforation has increasingly been used with promising results. We present our eight years´ experience with stent-based and organ-preserving treatment. MATERIALS AND METHODS: Medical records of 15 consecutive patients with Boerhaave syndrome from February 2007 to May 2015 were retrospectively registered in a database. Treatment was sealing of the perforation by stenting, chest tube drainage and débridement of the contaminated thorax...
March 9, 2018: Scandinavian Journal of Gastroenterology
https://www.readbyqxmd.com/read/29430474/characterization-and-validation-of-the-thorax-phantom-lungman-for-dose-assessment-in-chest-radiography-optimization-studies
#4
Sunay Rodríguez Pérez, Nicholas William Marshall, Lara Struelens, Hilde Bosmans
This work concerns the validation of the Kyoto-Kagaku thorax anthropomorphic phantom Lungman for use in chest radiography optimization. The equivalence in terms of polymethyl methacrylate (PMMA) was established for the lung and mediastinum regions of the phantom. Patient chest examination data acquired under automatic exposure control were collated over a 2-year period for a standard x-ray room. Parameters surveyed included exposure index, air kerma area product, and exposure time, which were compared with Lungman values...
January 2018: Journal of Medical Imaging
https://www.readbyqxmd.com/read/29386215/tension-pneumoperitoneum
#5
Giovanni Ferrara, Venkata Satish Kolli, Stefan Arnaudov, Graham Whiteley
A 35-year-old man stopped breathing after injecting a large dose of heroin. He subsequently received cardiopulmonary resuscitation from friends. He arrived to accident and emergency department with Glasgow Coma Scale of 13. On examination, he had distended and tense abdomen. CT Thorax, Abdomen, and Pelvis confirmed massive tension pneumoperitoneum. A 14 Fr intravenous cannula was inserted through the umbilicus to relieve the intra-abdominal pressure. An emergency laparotomy showed petechia along the anterior gastric wall, haematoma of lesser omentum but showed no evidence of gastrointestinal perforation or organ injury...
January 31, 2018: BMJ Case Reports
https://www.readbyqxmd.com/read/29320863/evaluation-of-an-iterative-model-based-ct-reconstruction-algorithm-by-intra-patient-comparison-of-standard-and-ultra-low-dose-examinations
#6
Peter B Noël, Stephan Engels, Thomas Köhler, Daniela Muenzel, Daniela Franz, Michael Rasper, Ernst J Rummeny, Martin Dobritz, Alexander A Fingerle
Background The explosive growth of computer tomography (CT) has led to a growing public health concern about patient and population radiation dose. A recently introduced technique for dose reduction, which can be combined with tube-current modulation, over-beam reduction, and organ-specific dose reduction, is iterative reconstruction (IR). Purpose To evaluate the quality, at different radiation dose levels, of three reconstruction algorithms for diagnostics of patients with proven liver metastases under tumor follow-up...
January 1, 2018: Acta Radiologica
https://www.readbyqxmd.com/read/29306371/iterative-reconstruction-and-automatic-tube-voltage-selection-reduce-clinical-ct-radiation-doses-and-image-noise
#7
L O'Hora, S J Foley
INTRODUCTION: Computed Tomography (CT) use has increased in recent years with trends indicating increasing population doses as a result. Optimization of clinical radiation doses through technological developments has demonstrated potential to reduce patient dose from CT. This study aimed to quantify these dose reductions across a large clinical cohort. METHODS: Patient cohort was divided into three groups, assigned by CT optimisation technique. Group one underwent scanning with automated tube current modulation only...
February 2018: Radiography
https://www.readbyqxmd.com/read/29201839/trauma-patterns-of-drowning-after-falling-from-bridges-over-han-river
#8
Jung Hwan Lee, Chung Kee Chough, Jae Il Lee
Objective: Recently, the number of patients who fell or jumped from bridges over Han River has rapidly increased. However, the injury patterns and outcomes of these patients have been poorly characterized. The aim of this study was to determine the injury characteristics of these patients. Methods: We reviewed the medical records of all patients who were transferred to the Emergency Room due to jumping or falling from bridges over Han River between 2011 and 2015...
October 2017: Korean Journal of Neurotrauma
https://www.readbyqxmd.com/read/29099006/a-26-year-old-man-with-dyspnea-and-chest-pain
#9
Saurabh Mittal, Akanksha Jain, Sudheer Arava, Vijay Hadda, Anant Mohan, Randeep Guleria, Karan Madan
A 26-year-old smoker male presented with a history of sudden onset dyspnea and right-sided chest pain. Chest radiograph revealed large right-sided pneumothorax which was managed with tube thoracostomy. High-resolution computed tomography thorax revealed multiple lung cysts, and for a definite diagnosis, a video-assisted thoracoscopic surgery-guided lung biopsy was performed followed by pleurodesis. This clinicopathologic conference discusses the clinical and radiological differential diagnoses, utility of lung biopsy, and management options for patients with such a clinical presentation...
November 2017: Lung India: Official Organ of Indian Chest Society
https://www.readbyqxmd.com/read/29037570/trace-elements-and-arsenic-speciation-in-tissues-of-tube-dwelling-polychaetes-from-hydrothermal-vent-ecosystems-east-pacific-rise-an-ecological-role-as-antipredatory-strategy
#10
Marta Di Carlo, Donato Giovannelli, Daniele Fattorini, Nadine Le Bris, Costantino Vetriani, Francesco Regoli
Hydrothermal vent systems are inhabited by dense benthic communities adapted to extreme conditions such as high temperature, hydrogen sulphide (H2 S) and elevated fluxes of metals. In the present work, a wide range of trace elements (Ag, Al, As, Ba, Cd, Co, Cr, Cu, Fe, Hg, Mn, Ni, Pb, Sb, Se, V and Zn) were measured in tissues of three tube dwelling annelids, Alvinella pompejana, Alvinella caudata and Riftia pachyptila, which colonize distinct habitats of the East Pacific Rise (EPR) at 2500 m depth. Metals concentrations in alvinellids were often 2-4 orders of magnitude higher than those commonly found in marine organisms, while much lower values were observed in the vestimentiferan polychaete...
December 2017: Marine Environmental Research
https://www.readbyqxmd.com/read/28886789/air-repatriation-with-a-medium-sized-pneumothorax-without-thoracic-tube-a-special-case-of-a-repatriation-accompanied-by%C3%A2-an%C3%A2-experienced-surgeon
#11
Melissa B Blau, Michael Weinlich, Werner Lauchart, Stefan Piatek, Felix Walcher
We report on the repatriation of a 28-year old female from Germany, who was involved in a serious bus accident and was transported to the nearest hospital in Oruro, Bolivia. CT scans and x-rays performed in this hospital demonstrated a complete pneumothorax right. Thorax drainage was inserted, which was removed after 5 days. Since the hospital refused to acknowledge the presence of a residual middle-sized pneumothorax on the repatriation day and did not want to insert another tube, the decision was made to repatriate the patient on commercial flight back home to Germany without a thoracic tube...
September 2017: Air Medical Journal
https://www.readbyqxmd.com/read/28840142/-18-f-fdg-pet-ct-in-pleural-epithelioid-hemangioendothelioma
#12
Domenico Albano, Giovanni Bosio, Andrea Tironi, Francesco Bertagna
Pleural epithelioid hemangioendothelioma (EHE) is a rare malignancy of vascular-endothelial origin with non-specific symptoms and an unpredictable outcome. Diagnosis of this condition by imaging modalities is challenging, and no standard therapeutic approaches have been established in this regard. In this paper, we described the case of a patient with a low-grade fever, coughing and chest pain who underwent (18)F-FDG PET/CT after a positive thorax CT showing multiple bilateral calcified pulmonary nodules and extensive right-sided pleural effusion...
2017: Asia Oceania Journal of Nuclear Medicine & Biology
https://www.readbyqxmd.com/read/28794695/water-filtered-infrared-a-wira-overcomes-swallowing-disorders-and-hypersalivation-a-case-report
#13
Gerd Hoffmann
Case description: A patient with a Barrett oesophageal carcinoma and a resection of the oesophagus with gastric pull-up developed swallowing disorders 6 years and 2 months after the operation. Within 1 year and 7 months two recurrences of the tumor at the anastomosis were found and treated with combined chemoradiotherapy or chemotherapy respectively. 7 years and 9 months after the operation local tumor masses and destruction were present with no ability to orally drink or eat (full feeding by jejunal PEG tube): quality of life was poor, as saliva and mucus were very viscous (pulling filaments) and could not be swallowed and had to be spat out throughout the day and night resulting in short periods of sleep (awaking from the necessity to spit out)...
2017: German Medical Science: GMS E-journal
https://www.readbyqxmd.com/read/28753703/-a-rare-cause-of-a-spontaneous-pneumothorax
#14
M Lepiorz, C Großer, H-S Hofmann, M Pfeifer
A young patient presented himself to the emergency department with sudden-onset, breathing-dependent right-sided thoracic pain. The auscultation revealed diminished breath sounds on the right. The radiograph showed a pneumothorax which was immediately dealt with chest tube drainage. The CT scan of the thorax showed minuscule subpleural bullae. Video-assisted thoracoscopic surgery (VATS) was performed due to persistent fistulae formation through the drain. The subpleural, bullous and emphysematous changes were histologically confirmed...
September 2017: Pneumologie
https://www.readbyqxmd.com/read/28752438/-blunt-and-penetrating-thoracic-trauma
#15
B Mühling
In most cases blunt chest trauma leads to fractures of the bony thorax, i. e. ribs. In the case of accompanying hemothorax or pneumothorax initial management consists of chest tube drainage by mini-thoracotomy. Subsequently patients with blunt chest trauma have to be transferred to the intensive care unit as these patients are at risk of pulmonary insufficiency or persistent blood loss via the chest tube. Injury to the great vessels or heart requires trauma care in specialized centers. Penetrating trauma is always surgically treated and the foreign body is removed in the operating room (OR)...
September 2017: Der Chirurg; Zeitschrift Für Alle Gebiete der Operativen Medizen
https://www.readbyqxmd.com/read/28720378/a-novel-technique-carbon-dioxide-gas-assisted-total-peritonectomy-diaphragm-and-intestinal-meso-stripping-in-open-surgery-for-advanced-ovarian-cancer-%C3%A3-ukurova-technique
#16
Ghanim Khatib, Ahmet Baris Guzel, Umran Kucukgoz Gulec, Mehmet Ali Vardar
OBJECTIVE: Most of the ovarian cancers are diagnosed at advanced stages. As peritoneal carcinomatosis increases, especially when it extends to the diaphragm and intestinal mesos, probability of obtaining complete cytoreduction is reduced. Complete cytoreduction (residue zero: R0) is one of the main factors affecting survival [1-3]. Here we present a novel technique of stripping the peritoneal surfaces as a part of cytoreductive surgery in such cases. METHODS: A 55year-old woman diagnosed with peritoneal carcinomatosis was considered appropriate for primary cytoreduction after assessment of her thorax-abdominopelvic tomography, which revealed resectable intra-abdominal disease...
September 2017: Gynecologic Oncology
https://www.readbyqxmd.com/read/28668419/dose-reduction-techniques-in-coronary-calcium-scoring-the-effect-of-iterative-reconstruction-combined-with-low-tube-voltage-on-calcium-scores-in-a-thoracic-phantom
#17
Marleen Vonder, Gert Jan Pelgrim, Mathias Meyer, Thomas Henzler, Matthijs Oudkerk, Rozemarijn Vliegenthart
OBJECTIVES: To define a dose-reduced coronary calcium CT protocol that provides similar calcium score values as a conventional 120kVp protocol. METHODS: A thorax phantom containing 100 calcifications was scanned with the reference protocol (120kVp, 90 ref mAs, FBP) and 30 dose-reduced protocols (70-110kVp, 90 ref mAs, FBP and iterative reconstruction (IR) levels 1-5) with 3rd generation dual-source CT. For protocols that yielded similar detectability and calcium scores as the reference protocol, additional scans were acquired at reduced ref mAs...
August 2017: European Journal of Radiology
https://www.readbyqxmd.com/read/28590940/simdosect-dose-reporting-software-based-on-monte-carlo-simulation-for-a-320-detector-row-cone-beam-ct-scanner-and-icrp-computational-adult-phantoms
#18
Maria Cros, Raoul Joemai, Jacob Koos Geleijns, Diego Molina, Marçal Salvadó
This study aims to develop and test software for assessing and reporting doses for standard patients undergoing computed tomography (CT) examinations in a 320 detector-row cone-beam scanner. The software, called SimDoseCT, is based on Monte Carlo (MC) simulation code, which was developed to calculate organ- and effective doses in ICRP anthropomorphic adult reference computational phantoms for acquisitions with the Aquilion ONE CT scanner (Toshiba). MC simulation was validated by comparing CTDI measurements within standard CT dose phantoms with results from simulation under the same conditions...
June 7, 2017: Physics in Medicine and Biology
https://www.readbyqxmd.com/read/28566083/-a-case-of-coccidioidomycosis-in-turkey-imported-from-the-united-states-of-america
#19
Seniha Başaran, Nilgün Karabıçak, Serap Şimşek Yavuz, Nathan P Wiederhold, Seda Şafak, Aysun Sarıbuğa, Deanna A Sutton, Züleyha Bingöl, Atahan Çağatay, Halit Özsüt, Zeki Kılıçaslan, Haluk Eraksoy
Coccidioidomycosis caused by Coccidioides immitis or Coccidioides posadasii is a rare infectious disease except in endemic regions. In this report the third documented imported case of coccidioidomycosis in Turkey was presented. A thirty-year-old male patient was admitted to our hospital with fever and purulent drainage from his chest tube. He had worked in Arizona, USA, until 4 months before this presentation. While in Arizona, he experienced cough and hemoptysis and was diagnosed as pulmonary coccidioidomycosis...
April 2017: Mikrobiyoloji Bülteni
https://www.readbyqxmd.com/read/28529813/difficult-management-of-a-double-lumen-endotracheal-tube-and-difficult-ventilation-during-robotic-thymectomy-with-carbon-dioxide-insufflation
#20
Yuki Sugiyama, Kunihiro Mitsuzawa, Yuki Yoshiyama, Fumiko Shimizu, Satoshi Fuseya, Takashi Ichino, Hiroyuki Agatsuma, Takayuki Shiina, Ken-Ichi Ito, Mikito Kawamata
Robotic surgery with carbon dioxide (CO2) insufflation to the thorax is frequently performed to gain a better operative field of view, although its intraoperative complications have not yet been discussed in detail. We treated two patients with difficult ventilation caused by distal migration of a double-lumen endotracheal tube (DLT) during robotic thymectomy. In the first case, migration of the DLT during one-lung ventilation (OLV) occurred after CO2 insufflation to the bilateral thoraxes was started. Oxygenation rapidly deteriorated because dependent lung expansion was restricted by CO2 insufflation...
2017: Case Reports in Surgery
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