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https://www.readbyqxmd.com/read/28549021/crus-atrophy-accuracy-of-computed-tomorgraphy-in-diagnosis-of-diaphragmatic-paralysis
#1
Warawut Sukkasem, Sherine G Moftah, Gregory Kicska, J David Godwin, Sudhakar Pipavath, Eric Stern
PURPOSE: The aim of this study was to measure the association between crus atrophy as depicted by computed tomography (CT) and fluoroscopic diagnosis of hemidiaphragmatic paralysis in patients with suspected diaphragmatic dysfunction. MATERIALS AND METHODS: A retrospective review of patient data was approved by our institutional review board and was HIPPA-compliant. We reviewed 90 patients who had undergone diaphragmatic fluoroscopy; 72 had CT scans available for measurement of crus thickness at the levels of the celiac and superior mesenteric arteries and the L1 vertebral body...
May 25, 2017: Journal of Thoracic Imaging
https://www.readbyqxmd.com/read/28549020/lung-density-and-pulmonary-artery-diameter-are-predictors-of-pulmonary-hypertension-in-systemic-sclerosis
#2
Margreet E Bakker, Maarten K Ninaber, Jan Stolk, Lucia J M Kroft, Anne A Schouffoer, Jeska K de Vries Bouwstra, Suzanne E van Wijngaarden, Berend C Stoel
PURPOSE: The aim was to evaluate computed tomography (CT)-measured pulmonary artery diameter (PAD) and lung density as predictors of pulmonary hypertension (PH) in subjects with systemic sclerosis (SSc). We compared these PAD values with normal values and between SSc subgroups with PH and/or interstitial lung disease (ILD). We investigated whether PAD predicts PH and whether lung densitometry, by using the 85th percentile density value (Perc85) as a measure for ILD, can predict PH. MATERIALS AND METHODS: PAD and Perc85 were measured in axial CT scans and compared between 54 SSc and 76 control subjects...
May 25, 2017: Journal of Thoracic Imaging
https://www.readbyqxmd.com/read/28548698/novel-porcine-experimental-model-of-severe-progressive-thoracic-scoliosis-with-compensatory-curves-induced-by-interpedicular-bent-rigid-temporary-tethering
#3
Carlos Barrios, José Miguel Lloris, Juan Alonso, Borja Maruenda, Jesús Burgos, Rafael Llombart-Blanco, Luis Gil, Viviana Bisbal
Using flexible tethering techniques, porcine models of experimental scoliosis have shown scoliotic curves with vertebral wedging but very limited axial rotation. The aim of this experimental work was to induce a severe progressive scoliosis in a growing porcine model for research purposes. A unilateral spinal bent rigid tether was anchored to two ipsilateral pedicle screws in eight pigs. The spinal tether was removed after 8 weeks. Ten weeks later, the animals were sacrificed. Conventional radiographs and 3D CT-scans were taken to evaluate changes in the alignment of the thoracic spine...
May 26, 2017: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
https://www.readbyqxmd.com/read/28548586/arthroscopic-treatment-of-osteochondral-lesions-of-the-talus-with-allograft-cartilage-matrix
#4
Jamal Ahmad, Mitchell Maltenfort
BACKGROUND: This prospective study evaluated the intermediate-term outcomes of operatively treating primary osteochondral lesions of the talus (OLT) of 1.5 cm(2) or smaller with arthroscopic excision, microfracture, and allograft cartilage extracellular matrix (ECM). METHODS: Between 2012 and 2015, 30 consecutive patients received allograft cartilage ECM at their microfractured OLT of 1.5 cm(2) or smaller after failing nonoperative treatment. Preoperative and postoperative function and pain were graded using the Foot and Ankle Ability Measure (FAAM) and a visual analog scale (VAS), respectively...
May 1, 2017: Foot & Ankle International
https://www.readbyqxmd.com/read/28547676/femoral-malrotation-after-surgical-treatment-of-femoral-shaft-fractures-in-children-a-retrospective-ct-based-analysis
#5
Christian Zeckey, Fergal Monsell, Mark Jackson, Philipp Mommsen, Musa Citak, Christian Krettek, Mohamed Omar
BACKGROUND: Rotational malalignment is an important and not always avoidable complication after surgical treatment of femoral shaft fractures. The purpose of this study was to determine the incidence of rotational malalignment in children after surgical treatment of femoral shaft fractures and to identify potential patient- and treatment-related risk factors based on data obtained from CT scans. METHODS: We conducted a retrospective analysis of all patients aged less than 15 years with femoral shaft fractures admitted to our level 1 trauma centre between January 2004 and July 2014...
May 25, 2017: European Journal of Orthopaedic Surgery & Traumatology: Orthopédie Traumatologie
https://www.readbyqxmd.com/read/28547660/rib-geometry-explains-variation-in-dynamic-structural-response-potential-implications-for-frontal-impact-fracture-risk
#6
Michelle M Murach, Yun-Seok Kang, Samuel D Goldman, Michelle A Schafman, Stephen H Schlecht, Kevin Moorhouse, John H Bolte, Amanda M Agnew
The human thorax is commonly injured in motor vehicle crashes, and despite advancements in occupant safety rib fractures are highly prevalent. The objective of this study was to quantify the ability of gross and cross-sectional geometry, separately and in combination, to explain variation of human rib structural properties. One hundred and twenty-two whole mid-level ribs from 76 fresh post-mortem human subjects were tested in a dynamic frontal impact scenario. Structural properties (peak force and stiffness) were successfully predicted (p < 0...
May 25, 2017: Annals of Biomedical Engineering
https://www.readbyqxmd.com/read/28547346/ketogenic-diet-compromises-both-cancellous-and-cortical-bone-mass-in-mice
#7
Xiuhua Wu, Zucheng Huang, Xiaomeng Wang, Zhaozong Fu, Junhao Liu, Zhiping Huang, Ganggang Kong, Xiaolin Xu, Jianyang Ding, Qingan Zhu
To clarify osteoporotic effects of ketogenic diet (KD) on cancellous and cortical bone compared with ovariectomy (OVX) in mice. Forty female C57BL/6J 8-week-old mice were randomly divided into SD+Sham, SD+OVX, KD+Sham, and KD+OVX groups, and fed for 12 weeks. The distal femur of trabecular bone and the middle femur of cortical bone were evaluated with Micro-CT scanning. The maximum bending force and stiffness of the tibia were calculated using a three-point bending test. Osteoblast and osteoclast expression of femur were identified using tartrate-resistant acid phosphatase (TRAP), collagen type I (CoLI), and osteocalcin (OCN) staining...
May 25, 2017: Calcified Tissue International
https://www.readbyqxmd.com/read/28547129/quantitative-analysis-of-dynamic-18-f-fdg-pet-ct-for-measurement-of-lung-inflammation
#8
Christopher Coello, Marie Fisk, Divya Mohan, Frederick J Wilson, Andrew P Brown, Michael I Polkey, Ian Wilkinson, Ruth Tal-Singer, Philip S Murphy, Joseph Cheriyan, Roger N Gunn
BACKGROUND: An inflammatory reaction in the airways and lung parenchyma, comprised mainly of neutrophils and alveolar macrophages, is present in some patients with chronic obstructive pulmonary disease (COPD). Thoracic fluorodeoxyglucose ((18)F-FDG) positron emission tomography (PET) has been proposed as a promising imaging biomarker to assess this inflammation. We sought to introduce a fully quantitative analysis method and compare this with previously published studies based on the Patlak approach using a dataset comprising (18)F-FDG PET scans from COPD subjects with elevated circulating inflammatory markers (fibrinogen) and matched healthy volunteers (HV)...
December 2017: EJNMMI Research
https://www.readbyqxmd.com/read/28547013/new-cfd-tools-to-evaluate-nasal-airflow
#9
M A Burgos, E Sanmiguel-Rojas, C Del Pino, M A Sevilla-García, F Esteban-Ortega
Computational fluid dynamics (CFD) is a mathematical tool to analyse airflow. As currently CFD is not a usual tool for rhinologists, a group of engineers in collaboration with experts in Rhinology have developed a very intuitive CFD software. The program MECOMLAND(®) only required snapshots from the patient's cross-sectional (tomographic) images, being the output those results originated by CFD, such as airflow distributions, velocity profiles, pressure, temperature, or wall shear stress. This is useful complementary information to cover diagnosis, prognosis, or follow-up of nasal pathologies based on quantitative magnitudes linked to airflow...
May 25, 2017: European Archives of Oto-rhino-laryngology
https://www.readbyqxmd.com/read/28546700/advanced-primary-epithelial-ovarian-and-peritoneal-carcinoma-does-diagnostic-accuracy-of-preoperative-ct-scan-for-detection-of-peritoneal-metastatic-sites-reflect-into-prediction-of-suboptimal-debulking-a-prospective-study
#10
Kiran Bagul, D K Vijaykumar, Anupama Rajanbabu, Mitchelle Aline Antony, Venkatesan Ranganathan
Ovarian cancer is the seventh most common cancer in females worldwide. Optimal debulking is the standard treatment but possible only in 30-85% of advanced stages. Knowing exactly the disease extent preoperatively may predict suboptimal debulking. We analyzed diagnostic accuracy of preoperative CT scan in disease mapping and prediction of suboptimal debulking in a prospective observational study from March 2013 to May 2015 in a tertiary hospital. Adults below the age of 75 years with ECOG PS-0, 1, 2, clinically/radiologically newly diagnosed stage IIIc epithelial ovarian (EOC), and primary peritoneal carcinoma (PPC) were included...
June 2017: Indian Journal of Surgical Oncology
https://www.readbyqxmd.com/read/28546336/the-value-of-18-f-fdg-pet-ct-in-diagnosis-and-during-follow-up-in-273-patients-with-chronic-q-fever
#11
Ilse Kouijzer, Linda Kampschreur, Peter Wever, Corneline Hoekstra, Marjo van Kasteren, Monique de Jager-Leclercq, Marrigje Nabuurs-Franssen, Marjolijn Wegdam-Blans, Heidi Ammerlaan, Jacqueline Buijs, Lioe-Fee de Geus-Oei, Wim Oyen, Chantal Bleeker-Rovers
In 1-5% of all acute Q fever infections, chronic Q fever develops, mostly manifesting as endocarditis, infected aneurysms, or infected vascular prostheses. In this study, we investigated the diagnostic value of (18)F-fluorodeoxyglucose positron emission tomography/computed tomography ((18)F-FDG-PET/CT) in chronic Q fever at diagnosis and during follow-up. Methods: All Dutch adult patients suspected of chronic Q fever who were diagnosed since 2007 were retrospectively included until March 2015 when at least one (18)F-FDG-PET/CT was performed...
May 25, 2017: Journal of Nuclear Medicine: Official Publication, Society of Nuclear Medicine
https://www.readbyqxmd.com/read/28546331/evaluation-of-dual-time-point-imaging-18-f-fdg-pet-ct-for-lymph-node-staging-in-vulvar-cancer
#12
Angela Collarino, Giorgia Garganese, Renato A Valdés Olmos, Antonella Stefanelli, Germano Perotti, Paoletta Mirk, Simona M Fragomeni, Francesco P Ieria, Giovanni Scambia, Alessandro Giordano, Vittoria Rufini
This study aimed to assess the value of dual time point (DTP) (18)F-FDG-PET/CT in the prediction of lymph node (LN) status in patients with invasive vulvar cancer (VC) scheduled for inguinofemoral lymph node dissection (IFLD). Methods: From April 2013 to July 2015, all consecutive patients with VC scheduled for IFLD were prospectively enrolled. All patients underwent a preoperative whole-body (18)F-FDG-PET/CT scan at 1-hour (standard exam) and an additional scan from T11 to the groins at 3-hour (delayed exam) after (18)F-FDG injection...
May 25, 2017: Journal of Nuclear Medicine: Official Publication, Society of Nuclear Medicine
https://www.readbyqxmd.com/read/28546330/exploring-new-multimodal-quantitative-imaging-indices-for-the-assessment-of-osseous-tumour-burden-in-prostate-cancer-using-68-ga-psma-pet-ct
#13
Marie Bieth, Markus Krönke, Robert Tauber, Marielena Dahlbender, Margitta Retz, Stephan G Nekolla, Bjoern Menze, Tobias Maurer, Matthias Eiber, Markus Schwaiger
Positron-emission-tomography (PET) combined with computed-tomography (CT) and prostate-specific-membrane-antigen (PSMA) ligands has gained significant interest for staging prostate cancer (PC). In this study, we propose two multimodal quantitative indices as imaging biomarker for the assessment of osseous tumour burden using (68)Ga-PSMA-PET/CT and present preliminary clinical data. We define two Bone-PET-Indices (BPI) that incorporate anatomical information from CT and functional information from (68)Ga-PSMA-PET: BPIVOL is the percental bone volume affected by tumour...
May 25, 2017: Journal of Nuclear Medicine: Official Publication, Society of Nuclear Medicine
https://www.readbyqxmd.com/read/28546238/persistent-fetal-lobulation-of-kidney-mimicking-renal-tumour
#14
Syed Muhammad Nazim, Muhibullah Bangash, Basit Salam
Renal pseudotumour is a term coined to describe conditions of renal anatomic variants that simulate focal renal pathology like a tumour on ultrasonography. These include persistent fetal lobulation, hypertrophy of Bertin columns and dromedary humps. We report a case of a 30-year-old nulliparous woman who was managed in gynaecology clinic for menorrhagia and was subsequently referred to us for management of recurrent urinary tract infections. The clinical examination was normal and on ultrasound scan, she was found to have multiple enlarged heterogeneous solid masses in both kidneys with significantly increased vascularity, suspicious for neoplastic lesions...
May 24, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28546142/non-invasive-postmortems-using-ct-scans-are-feasible-study-finds
#15
Zosia Kmietowicz
No abstract text is available yet for this article.
May 24, 2017: BMJ: British Medical Journal
https://www.readbyqxmd.com/read/28546099/accuracy-of-pedicle-screw-placement-in-posterior-lumbosacral-instrumentation-by-computer-tomography-evaluation-a-multi-centric-retrospective-clinical-study
#16
Tianming Yu, Shuang Mi, Yuansong He, Zhenwu Zhang, Wenjie Dai, Jiqing Tian, Zhenghua Hong, Shunwu Fan, Fengdong Zhao
BACKGROUND: Pedicle screw misplacement rates are relatively high with fluoroscopically guided techniques. However, breach rates in the 5th lumbar and the 1st sacral spines in conventional operations have not been specifically concerned because of their broad cross sections. It's a retrospective study to evaluate the accuracy and safety of pedicle screw placement in posterior lumbosacral instrumentation under CT scan with reconstruction. MATERIALS AND METHODS: 401 patients were evaluated under CT scan with reconstruction in 3 hospitals by 2 professional observers after posterior lumbosacral instrumentation including 152 3rd lumbar spines (L3), 219 4th lumbar spines (L4), 270 5th lumbar spines (L5) and 95 1st sacral spines (S1) with screws placed...
May 22, 2017: International Journal of Surgery
https://www.readbyqxmd.com/read/28546046/on-the-use-of-geometric-modeling-to-predict-aortic-aneurysm-rupture
#17
Sruthi L Muluk, Pallavi D Muluk, Judy Shum, Ender A Finol
BACKGROUND: Currently, the risk of abdominal aortic aneurysm (AAA) rupture is determined using the maximal diameter (Dmax) of the aorta. We sought in this study to identify a set of CT-based geometric parameters that would better predict the risk of rupture than Dmax. METHODS: We obtained CT Scans from 180 patients (90 ruptured AAA, 90 elective AAA repair) and then used automated software to calculate 1-dimensional, 2-dimensional, and 3-dimensional geometric parameters for each AAA...
May 22, 2017: Annals of Vascular Surgery
https://www.readbyqxmd.com/read/28546017/delayed-left-atrial-appendage-contrast-filling-in-computed-tomograms-after-percutaneous-left-atrial-appendage-occlusion
#18
Yeong-Min Lim, Jung-Sun Kim, Tae-Hoon Kim, Jae-Sun Uhm, Chi Young Shim, Boyoung Joung, Geu-Ru Hong, Moon-Hyoung Lee, Yang-Soo Jang, Hui-Nam Pak
BACKGROUND: The gold standard for the follow-up of left atrial appendage occlusion (LAAO) is performing transesophageal echocardiogram (TEE) at 45 days after LAAO; however, the duration for complete LAA seal-off after percutaneous LAAO is unknown in humans. We retrospectively evaluated the LAA contrast-filling (CF) rate in follow-up cardiac computed tomography (CT) scans after LAAO. METHODS: We included 35 patients (age 67.5±10.9 years, CHA2DS2VASc 4.2±1.6, HAS-BLED 3...
May 22, 2017: Journal of Cardiology
https://www.readbyqxmd.com/read/28545887/how-to-identify-high-radiation-burden-from-computed-tomography-an-example-in-obese-children
#19
Daniel L Lodwick, Jennifer N Cooper, Brent Adler, Choonsik Lee, Kelly Kelleher, Peter C Minneci, Katherine J Deans
BACKGROUND: Radiation burden from the use of computed tomography (CT) imaging may not be evenly distributed. We tested whether overweight and obese children receive higher radiation burden from CT imaging. METHODS: An automated software tool (DoseWizard) assessed patient-level radiation dose from CT and merged results with clinical data from the electronic health record. CT scans of the head, chest, and abdomen/pelvis (A/P) performed at our institution from January 2013 to August 2015 on patients aged <16 y were processed using this software...
May 5, 2017: Journal of Surgical Research
https://www.readbyqxmd.com/read/28545474/a-retrospective-study-to-assess-the-evaluation-of-living-related-kidney-donors-and-their-outcomes-following-nephrectomy-at-kenyatta-national-hospital
#20
A Muturi, V Kotecha, S Kanyi
BACKGROUND: Kidney transplantation is the renal replacement therapy of choice for end stage renal disease. To ensure safety regular audit of the donation process is necessary. The aim of this study was to assess the evaluation of potential living related kidney donors and document their outcomes following nephrectomy. METHODS: This was a retrospective descriptive study involving all living related kidney donors seen at Kenyatta National Hospital (KNH) renal unit from 2010 to 2014...
May 25, 2017: BMC Nephrology
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