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https://www.readbyqxmd.com/read/28079808/diagnosis-and-treatment-of-pediatric-benign-pneumoperitoneum-a-case-report-series-of-9-patients
#1
Shou-Xing Duan, Zong-Bo Sun, Guang-Huan Wang, Jun Zhong, Wen-Hui Ou, Ma-Xian Fu, Fu-Sheng Wang, Shu-Hua Ma, Jian-Hong Li
INTRODUCTION: Benign pneumoperitoneum (BPPT) is defined as asymptomatic free intraabdominal air or as pneumoperitoneum without peritonitis. Symptomatic free air requires surgical anagement, but management of asymptomatic pneumoperitoneum is controversial. In this study, we investigate the diagnosis and treatment of BPPT in children. CLINICAL FINDINGS: The clinical data of 9 pediatric patients with BPPT who were admitted to our hospital from January 2000 to January 2015 were retrospectively analyzed to summarize the diagnosis and treatment...
January 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28074453/laparoscopic-resection-and-intracorporeal-anastomosis-of-perforated-small-bowel-caused-by-fish-bone-ingestion
#2
Ahmet Cem Dural, Muhammet Ferhat Çelik, Hakan Yiğitbaş, Cevher Akarsu, Mahmut Doğan, Halil Alış
Presently described is case of a 52-year-old man who was admitted to the emergency department with 3-day history of epigastric pain. Abdominal examination revealed diffuse tenderness and muscle guarding. Plain abdominal X-ray showed free subdiaphragmatic air. The patient underwent diagnostic laparoscopy with presumptive diagnosis of peptic ulcer perforation. Laparoscopy showed several inflamed, edematous jejunal loops with proximal obstruction and perforation by an impacted fish bone. Completely intracorporeal resection and anastomosis using laparoscopic linear stapler was performed and segment of resected bowel was removed through trocar site...
November 2016: Ulusal Travma Ve Acil Cerrahi Dergisi, Turkish Journal of Trauma & Emergency Surgery: TJTES
https://www.readbyqxmd.com/read/28071718/reproducibility-and-repeatability-of-computer-tomography-based-measurement-of-abdominal-subcutaneous-and-visceral-adipose-tissues
#3
Yuan-Hao Lee, Hsing-Fen Hsiao, Hou-Ting Yang, Shih-Yi Huang, Wing P Chan
Excessive accumulation of abdominal adipose tissue is a widely recognized as a major feature of obesity, and it can be quantified by dual-energy x-ray absorptiometry (DXA). However, in a phantom study, the inter- and intra-instrument reliability of DXA remains unpredictable. Thus, we attempted to determine the precision of estimates from computer tomography-based measurements and analysis with AZE Virtual Place software. To determine the inter-rater reproducibility and intra-rater repeatability of adipose tissue area estimates, we used the automatic boundary-tracing function of the AZE Virtual Place to generate cross-sectional areas of subcutaneous and visceral adipose tissues from the abdomen of reconstructed CT images...
January 10, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28067890/validity-of-visceral-adiposity-estimates-from-dxa-against-mri-in-kuwaiti-men-and-women
#4
A Mohammad, E De Lucia Rolfe, A Sleigh, T Kivisild, K Behbehani, N J Wareham, S Brage, T Mohammad
OBJECTIVES: The prevalence of obesity and diabetes in the Middle East is among the highest in the world. Valid measures of abdominal adiposity are essential to understanding the metabolic consequences of obesity. Dual-energy X-ray absorptiometry (DXA) is increasingly being utilised to assess body composition in population studies, and has recently been used to estimate visceral adipose tissue (VAT). The aim of this study was to determine the accuracy of DXA-derived VAT in a Middle Eastern population using magnetic resonance imaging (MRI) as the criterion measure...
January 9, 2017: Nutrition & Diabetes
https://www.readbyqxmd.com/read/28055861/a-novel-two-compartment-model-for-calculating-bone-volume-fractions-and-bone-mineral-densities-from-computed-tomography-images
#5
Hsin-Hon Lin, Shin-Lei Peng, Jay Wu, Tian-Yu Shih, Keh-Shih Chuang, Cheng-Ting Shih
Osteoporosis is a disease characterized by a degradation of bone structures. Various methods have been developed to diagnose osteoporosis by measuring bone mineral density (BMD) of patients. However, BMDs from these methods were not equivalent and were incomparable. In addition, partial volume effect introduces errors in estimating bone volume from computed tomography (CT) images using image segmentation. In this study, a two-compartment model (TCM) was proposed to calculate bone volume fraction (BV/TV) and BMD from CT images...
December 30, 2016: IEEE Transactions on Medical Imaging
https://www.readbyqxmd.com/read/28054283/mediastinal-seminoma-associated-with-multilocular-thymic-cyst
#6
Masato Inui, Jun-Ichi Nitadori, Shogo Tajima, Takahusa Yoshioka, Noriko Hiyama, Takeyuki Watadani, Aya Shinozaki-Ushiku, Kazuhiro Nagayama, Masaki Anraku, Masaaki Sato, Masashi Fukayama, Jun Nakajima
An asymptomatic 26-year-old man received an annual medical check-up, and chest X-ray showed a protrusion of the aortopulmonary window. Chest computed tomography (CT) revealed an anterior mediastinal tumor and cysts with thin wall and septum enhancement. The preoperative diagnosis was cystic thymoma or malignant lymphoma. We performed total resection of the tumor through a median sternotomy. The pathological findings revealed seminoma, positive for c-kit stain, and multilocular thymic cysts. Cysts were lined by normal squamous epithelium and no seminoma cells were located on their surface...
December 2017: Surgical Case Reports
https://www.readbyqxmd.com/read/28050542/epidemiological-profile-of-patients-diagnosed-with-athletic-pubalgia
#7
Anderson Luiz de Oliveira, Carlos Vicente Andreoli, Benno Ejnisman, Roberto Dantas Queiroz, Osvaldo Guilherme Nunes Pires, Guilherme Guadagnini Falótico
OBJECTIVE: To evaluate the clinical and epidemiological characteristics of pubalgia in patients from a Sports Medicine Center. METHODS: Data analysis from medical records of patients with athletic pubalgia attended to from January 2007 to January 2015. The diagnosis was made by an experienced hip surgeon, complemented with pelvic X-ray, abdominal wall ultrasound, and magnetic resonance imaging of the pelvis. RESULTS: Among 43 patients, 42 were men, with mean age of 33 years...
November 2016: Revista Brasileira de Ortopedia
https://www.readbyqxmd.com/read/28048915/su-f-i-29-investigating-the-impact-of-the-amount-of-contrast-material-used-in-abdominal-ct-examinations-regarding-the-diagnosis-of-appendicolith
#8
E Lavdas, N Boci, L Sarantaenna, A Godevenos, I Ntavelis, T Theodoropoulos, G Zaimis, P Mavroidis
PURPOSE: The purpose of this study is to report the case of a young adult in which the incomplete oral administration of contrast material led to diagnosis of an appendicolith, which cause acute appendicitis. METHODS: A male 34 years old underwent CT examination due to acute abdominal pain in the upper abdomen. An ultrasound examination of the upper abdomen and kidneys, an x-ray examination of the abdomen and a CT scan of the entire abdomen and pelvis after both oral and IV administration of contrast material were performed...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28047677/su-f-p-59-detection-of-missing-surgical-needles-with-intraoperative-mobile-x-ray
#9
L Chen, B Berger
PURPOSE: To determine the minimal detectable size of a surgical needle using intraoperative mobile x-ray imaging. Also, varying techniques such as low kVp and high tube current were tested to investigate whether this improved the detection of the various needle sizes. METHODS: Seven surgical needle sizes, 6.5, 8, 11, 13, 16, 17 and 19 mm, were positioned on three regions (thoracic, abdominal and pelvic) of an adult size anthropomorphic RANDO phantom. The phantom represents an average size adult...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28047626/su-f-i-71-fetal-protection-during-fluoroscopy-to-shield-or-not-to-shield
#10
S Joshi, M Vanderhoek
PURPOSE: Lead aprons are routinely used to shield the fetus from radiation during fluoroscopically guided interventions (FGI) involving pregnant patients. When placed in the primary beam, lead aprons often reduce image quality and increase fluoroscopic radiation output, which can adversely affect fetal dose. The purpose of this work is to identify an effective and practical method to reduce fetal dose without affecting image quality. METHODS: A pregnant patient equivalent abdominal phantom is set on the table along with an image quality test object (CIRS model 903) representing patient anatomy of interest...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28047550/su-g-iep2-05-effect-of-localizer-type-and-patient-off-centering-on-ct-radiation-dose-with-use-of-automatic-tube-current-modulation
#11
C Ruan, A Sodickson, L Hamberg
PURPOSE: Apparent patient size in CT localizers varies with localizer type and patient positioning, resulting in variation in effective mAs as guided by Tube Current Modulation (TCM). Our aim was to investigate the effects of vertical off-centering on CTDI-vol when using different localizer types and TCM strengths. METHODS: A CTDI body phantom was scanned using an abdominal protocol with three TCM strengths (Siemens Definition AS40, CAREDose4D; very weak, average, very strong)...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28047300/tu-d-209-05-automatic-calculation-of-organ-and-effective-dose-for-cbct-and-interventional-fluoroscopic-procedures
#12
Z Xiong, S Vijayan, A Oines, S Rudin, D Bednarek
PURPOSE: To compare PCXMC and EGSnrc calculated organ and effective radiation doses from cone-beam computed tomography (CBCT) and interventional fluoroscopically-guided procedures using automatic exposure-event grouping. METHODS: For CBCT, we used PCXMC20Rotation.exe to automatically calculate the doses and compared the results to those calculated using EGSnrc with the Zubal patient phantom. For interventional procedures, we use the dose tracking system (DTS) which we previously developed to produce a log file of all geometry and exposure parameters for every x-ray pulse during a procedure, and the data in the log file is input into PCXMC and EGSnrc for dose calculation...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28047269/tu-h-campus-iep1-04-combined-organ-dose-for-digital-subtraction-angiography-and-computed-tomography-using-monte-carlo-simulation
#13
D Sakabe, T Ohno, F Araki, M Hashida, Y Funama
PURPOSE: The purpose of this study was to evaluate the combined organ dose of digital subtraction angiography (DSA) and computed tomography (CT) using a Monte Carlo (MC) simulation on the abdominal intervention. METHODS: The organ doses for DSA and CT were obtained with MC simulation and actual measurements using fluorescent-glass dosimeters at 7 abdominal portions in an Alderson-Rando phantom. DSA was performed from three directions: posterior anterior (PA), right anterior oblique (RAO), and left anterior oblique (LAO)...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28046941/su-g-iep3-13-real-time-patient-and-staff-dose-monitoring-in-fluoroscopy-guided-interventions
#14
L Vergoossen, A Sailer, L Paulis, J Wildberger, C Jeukens
PURPOSE: Interventional radiology procedures involve the use of X-rays, which can pose a large radiation burden on both patients and staff. Although some reports on radiation dose are available, most studies focus on limited types of procedures and only report patient dose. In our cathlabs a dedicated real-time patient and staff monitoring system was installed in November 2015. The aim of this study was to investigate the patient and staff dose exposure for different types of interventions...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28046705/su-f-t-202-an-evaluation-method-of-lifetime-attributable-risk-for-comparing-between-proton-beam-therapy-and-intensity-modulated-x-ray-therapy-for-pediatric-cancer-patients-by-averaging-four-dose-response-models-for-carcinoma-induction
#15
M Tamura, Y Ito, H Sakurai, M Mizumoto, S Kamizawa, S Murayama, H Yamashita, S Takao, R Suzuki, H Shirato
PURPOSE: To examine how much lifetime attributable risk (LAR) as an in silico surrogate marker of radiation-induced secondary cancer would be lowered by using proton beam therapy (PBT) in place of intensity modulated x-ray therapy (IMXT) in pediatric patients. METHODS: From 242 pediatric patients with cancers who were treated with PBT, 26 patients were selected by random sampling after stratification into four categories: a) brain, head, and neck, b) thoracic, c) abdominal, and d) whole craniospinal (WCNS) irradiation...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28046680/su-f-j-14-kilovoltage-cone-beam-ct-dose-estimation-of-varian-on-board-imager-using-gmctdospp-monte-carlo-framework
#16
S Kim, D Rangaraj
PURPOSE: Although cone-beam CT (CBCT) imaging became popular in radiation oncology, its imaging dose estimation is still challenging. The goal of this study is to assess the kilovoltage CBCT doses using GMctdospp - an EGSnrc based Monte Carlo (MC) framework. METHODS: Two Varian OBI x-ray tube models were implemented in the GMctpdospp framework of EGSnrc MC System. The x-ray spectrum of 125 kVp CBCT beam was acquired from an EGSnrc/BEAMnrc simulation and validated with IPEM report 78...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28046251/su-g-iep3-02-characteristics-of-in-vivo-mosfet-dosimeters-for-diagnostic-x-ray-low-dose-measurements
#17
S Li, S Ali, K Harper, Q Liang, D Serratore
PURPOSE: To correct in-vivo metal-oxide-semiconductor field-effect transistor (MOSFET) dosimeters dependence on X-ray energy, dose and dose rate, and temperature in order to measure doses or exposures on several anatomic points of interest undergoing some routine radiographs. METHODS: A mobile MOSFET system (BEST Medical) was carefully calibrated with X-ray at kVp of 70, 80, 100, 120, and 138 kVp, phantom temperatures at 0, 21, and 43 oC, and exposure range from 0...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28043313/ogilvie-s-syndrome
#18
Muhammad Waqas Khan, Sanniya Khan Ghauri, Sara Shamim
Ogilvie's syndrome, also known as 'paralytic ileus of the colon', is characterised by pseudo-obstruction of the large intestine in the absence of any mechanical obstructing component; and presents as a massively distended abdomen. If left untreated, it may lead to bowel perforation or ischemia. Ogilvie's syndrome usually presents as a postsurgical complication, mainly due to the lack and/or restriction of movement coupled with a possible electrolyte imbalance. Here, we present a case of a pre-surgical 63-year lady, having a right hip fracture, who came with complaints of severe abdominal pain and distension for 4 days...
December 2016: Journal of the College of Physicians and Surgeons—Pakistan: JCPSP
https://www.readbyqxmd.com/read/28034592/densitometer-specific-differences-in-the-correlation-between-body-mass-index-and-lumbar-spine-trabecular-bone-score
#19
Gillian Mazzetti, Claudie Berger, William D Leslie, Didier Hans, Lisa Langsetmo, David A Hanley, Christopher S Kovacs, Jerrilyn C Prior, Stephanie M Kaiser, K Shawn Davison, Robert Josse, Alexandra Papaioannou, Jonathan R Adachi, David Goltzman, Suzanne N Morin
Trabecular bone score (TBS) is a gray-level texture measure derived from lumbar spine dual-energy X-ray absorptiometry (DXA) images that predicts fractures independent of bone mineral density (BMD). Increased abdominal soft tissue in individuals with elevated body mass index (BMI) absorbs more X-rays during image acquisition for BMD measurement and must be accommodated by the TBS algorithm. We aimed to determine if the relationship between BMI and TBS varied between 2 major manufacturers' densitometers, because different densitometers accommodate soft tissues differently...
December 26, 2016: Journal of Clinical Densitometry
https://www.readbyqxmd.com/read/28032666/capsule-retention-in-a-meckel-s-diverticulum-for-7-5-years
#20
Chun-Run Ling, Mo-Jin Wang, Wen Zhuang
A 32-year-old man underwent wireless capsule endoscopy (WCE) (OMOM Capsule Endoscopy, Jinshan Science & Technology Company, Chongqing, China) for detecting obscure gastrointestinal bleeding 7.5 years ago. The result of WCE did not reveal any hemorrhagic focus, diverticulum or other abnormal changes of the gastrointestinal tract until its battery exhausted. The man then moved out from the area and lost to follow up without a report of capsule excretion. For confirming the diagnosis of recurrent melena and iron-deficiency anemia, the patient came to our clinical center...
December 29, 2016: Digestive Endoscopy: Official Journal of the Japan Gastroenterological Endoscopy Society
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