keyword
MENU ▼
Read by QxMD icon Read
search

3d kidney

keyword
https://www.readbyqxmd.com/read/28323157/anatomic-variations-of-inferior-mesenteric-artery-and-left-colic-artery-evaluated-by-3-dimensional-ct-angiography-insights-into-rectal-cancer-surgery
#1
Jia Ke, Jiawei Cai, Xiaofeng Wen, Xianrui Wu, Zhen He, Yifeng Zou, Jianping Qiu, Xiaowen He, Xiaosheng He, Lei Lian, Xiaojian Wu, Zhiyang Zhou, Ping Lan
OBJECTIVE: To demonstrate the clinical applicability of 3-dimensional CT angiography (3D-CTA) in evaluating the anatomic variations of inferior mesenteric artery (IMA) and left colic artery (LCA), to help make pre-operative strategies of rectal cancer surgery. METHODS: 188 patients with abdominal and pelvic contrast-enhanced CT scan were retrospectively enrolled and 3D-CTA was reconstructed. The origin and branching patterns of IMA, tracking patterns of LCA, intersectional patterns among IMA, LCA and inferior mesenteric vein (IMV) were examined, and their associations with clinical features were analyzed...
March 16, 2017: International Journal of Surgery
https://www.readbyqxmd.com/read/28321776/colony-hanging-drop-and-methylcellulose-three-dimensional-hypoxic-growth-optimization-of-renal-cell-carcinoma-cell-lines
#2
Damian Matak, Klaudia K Brodaczewska, Monika Lipiec, Łukasz Szymanski, Cezary Szczylik, Anna M Czarnecka
Renal cell carcinoma (RCC) is the most lethal of the common urologic malignancies, comprising 3% of all human neoplasms, and the incidence of kidney cancer is rising annually. We need new approaches to target tumor cells that are resistant to current therapies and that give rise to recurrence and treatment failure. In this study, we focused on low oxygen tension and three-dimensional (3D) cell culture incorporation to develop a new RCC growth model. We used the hanging drop and colony formation methods, which are common in 3D culture, as well as a unique methylcellulose (MC) method...
March 20, 2017: Cytotechnology
https://www.readbyqxmd.com/read/28320523/roles-of-fluid-shear-stress-and-retinoic-acid-in-the-differentiation-of-primary-cultured-human-podocytes
#3
Seung Hee Yang, Jin Woo Choi, Dongeun Huh, Hyung Ah Jo, Sejoong Kim, Chun Soo Lim, Jung Chan Lee, Hee Chan Kim, Hyug Moo Kwon, Chang Wook Jeong, Cheol Kwak, Kwon Wook Joo, Yon Su Kim, Dong Ki Kim
Due to the distinct features that distinguish immortalized podocyte cell lines from their in vivo counterparts, primary cultured human podocytes might be a superior cell model for glomerular disease studies. However, the podocyte de-differentiation that occurs in culture remains an unresolved problem. Here, we present a method to differentiate primary cultured podocytes using retinoic acid (RA) and fluid shear stress (FSS), which mimic the in vivo environment of the glomerulus. RA treatment induced changes in the cell shape of podocytes from a cobblestone-like morphology to an arborized configuration with enhanced mobility...
March 16, 2017: Experimental Cell Research
https://www.readbyqxmd.com/read/28317122/an-anthropomorphic-abdominal-phantom-for-deformable-image-registration-accuracy-validation-in-adaptive-radiation-therapy
#4
Yuliang Liao, Linjing Wang, Xiangdong Xu, Haibin Chen, Jiawei Chen, Guoqian Zhang, Huaiyu Lei, Ruihao Wang, Shuxu Zhang, Xuejun Gu, Xin Zhen, Linghong Zhou
PURPOSE: To design and construct a three-dimensional (3D) anthropomorphic abdominal phantom for geometric accuracy and dose summation accuracy evaluations of deformable image registration (DIR) algorithms for adaptive radiation therapy (ART). METHOD: Organ molds, including liver, kidney, spleen, stomach, vertebra and two metastasis tumors, were 3D printed using contours from an ovarian cancer patient. The organ molds were molded with deformable gels made of different mixtures of polyvinyl chloride (PVC) and the softener dioctyl terephthalate...
March 20, 2017: Medical Physics
https://www.readbyqxmd.com/read/28315882/comparison-of-total-kidney-volume-quantification-methods-in-autosomal-dominant-polycystic-disease-for-a-comprehensive-disease-assessment
#5
Dario Turco, Marco Busutti, Renzo Mignani, Riccardo Magistroni, Cristiana Corsi
BACKGROUND: In recent times, the scientific community has been showing increasing interest in the treatments aimed at slowing the progression of the autosomal dominant polycystic kidney disease (ADPKD). Therefore, in this paper, we test and evaluate the performance of several available methods for total kidney volume (TKV) computation in ADPKD patients - from echography to MRI - in order to optimize patient classification. METHODS: Two methods based on geometric assumptions (mid-slice [MS], ellipsoid [EL]) and a third one on true contour detection were tested on 40 ADPKD patients at different disease stage using MRI...
March 18, 2017: American Journal of Nephrology
https://www.readbyqxmd.com/read/28286747/rapid-fabrication-of-cell-laden-alginate-hydrogel-3d-structures-by-micro-dip-coating
#6
Atabak Ghanizadeh Tabriz, Christopher G Mills, John J Mullins, Jamie A Davies, Wenmiao Shu
Development of a simple, straightforward 3D fabrication method to culture cells in 3D, without relying on any complex fabrication methods, remains a challenge. In this paper, we describe a new technique that allows fabrication of scalable 3D cell-laden hydrogel structures easily, without complex machinery: the technique can be done using only apparatus already available in a typical cell biology laboratory. The fabrication method involves micro dip-coating of cell-laden hydrogels covering the surface of a metal bar, into the cross-linking reagents calcium chloride or barium chloride to form hollow tubular structures...
2017: Frontiers in Bioengineering and Biotechnology
https://www.readbyqxmd.com/read/28281356/interfractional-renal-and-diaphragmatic-position-variation-during-radiotherapy-in-children-and-adults-is-there-a-difference
#7
Irma W E M van Dijk, Sophie C Huijskens, Rianne de Jong, Jorrit Visser, Raquel Dávila Fajardo, Coen R N Rasch, Tanja Alderliesten, Arjan Bel
BACKGROUND: Pediatric safety margins are generally based on data from adult studies; however, adult-based margins might be too large for children. The aim of this study was to quantify and compare interfractional organ position variation in children and adults. MATERIAL AND METHODS: For 35 children and 35 adults treated with thoracic/abdominal irradiation, 850 (range 5-30 per patient) retrospectively collected cone beam CT images were registered to the reference CT that was used for radiation treatment planning purposes...
March 10, 2017: Acta Oncologica
https://www.readbyqxmd.com/read/28280519/3d-kidney-segmentation-from-abdominal-images-using-spatial-appearance-models
#8
Fahmi Khalifa, Ahmed Soliman, Adel Elmaghraby, Georgy Gimel'farb, Ayman El-Baz
Kidney segmentation is an essential step in developing any noninvasive computer-assisted diagnostic system for renal function assessment. This paper introduces an automated framework for 3D kidney segmentation from dynamic computed tomography (CT) images that integrates discriminative features from the current and prior CT appearances into a random forest classification approach. To account for CT images' inhomogeneities, we employ discriminate features that are extracted from a higher-order spatial model and an adaptive shape model in addition to the first-order CT appearance...
2017: Computational and Mathematical Methods in Medicine
https://www.readbyqxmd.com/read/28266730/echocardiographic-assessment-in-patients-with-chronic-kidney-disease-current-update
#9
REVIEW
Samir Sulemane, Vasileios F Panoulas, Petros Nihoyannopoulos
Patients with chronic kidney disease (CKD) carry a high cardiovascular risk. An abundance of evidence has emerged in recent years establishing minor reductions in estimated glomerular filtration rate as an independent risk factor for cardiovascular mortality. Additionally, cardiac changes, such as left ventricular hypertrophy and impaired left ventricular systolic function, have been associated with an unfavorable prognosis. Despite the significant prevalence of underlying cardiac abnormalities, symptoms may not manifest in many patients with CKD...
March 7, 2017: Echocardiography
https://www.readbyqxmd.com/read/28253274/planar-cell-polarity-genes-frizzled4-and-frizzled6-exert-patterning-influence-on-arterial-vessel-morphogenesis
#10
Rene Markovič, Julien Peltan, Marko Gosak, Denis Horvat, Borut Žalik, Benjamin Seguy, Remi Chauvel, Gregoire Malandain, Thierry Couffinhal, Cécile Duplàa, Marko Marhl, Etienne Roux
Quantitative analysis of the vascular network anatomy is critical for the understanding of the vasculature structure and function. In this study, we have combined microcomputed tomography (microCT) and computational analysis to provide quantitative three-dimensional geometrical and topological characterization of the normal kidney vasculature, and to investigate how 2 core genes of the Wnt/planar cell polarity, Frizzled4 and Frizzled6, affect vascular network morphogenesis. Experiments were performed on frizzled4 (Fzd4-/-) and frizzled6 (Fzd6-/-) deleted mice and littermate controls (WT) perfused with a contrast medium after euthanasia and exsanguination...
2017: PloS One
https://www.readbyqxmd.com/read/28252672/acute-podocyte-injury-is-not-a-stimulus-for-podocytes-to-migrate-along-the-glomerular-basement-membrane-in-zebrafish-larvae
#11
Florian Siegerist, Antje Blumenthal, Weibin Zhou, Karlhans Endlich, Nicole Endlich
Podocytes have a unique 3D structure of major and interdigitating foot processes which is the prerequisite for renal blood filtration. Loss of podocytes leads to chronic kidney disease ending in end stage renal disease. Until now, the question if podocytes can be replaced by immigration of cells along the glomerular basement membrane (GBM) is under debate. We recently showed that in contrast to former theories, podocytes are stationary in the zebrafish pronephros and neither migrate nor change their branching pattern of major processes over 23 hours...
March 2, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28247628/-choosing-a-method-of-draining-the-upper-urinary-tract-following-percutaneous-nephrolithotripsy
#12
Ju G Alyaev, N A Grigoriev, N I Sorokin, I V Diakonov, S H Ali
PURPOSE: to compare various methods of upper urinary tract drainage in patients with urolithiasis. PATIENTS AND METHODS: 60 patients were included into a prospective study which ran from March 2013 through December 2014. All patients underwent PCNL with a nephrostomy tract diameter of (28-30 Ch.) at the I.M. Sechenov First Moscow State Medical University urology clinic. Patients were divided into 2 groups. Group 1 30 (patients) underwent nephrostomy after PCNL with nephrostomy tract placement, in group 2 (29 patients) internal drainage was performed...
August 2016: Urologii︠a︡
https://www.readbyqxmd.com/read/28207950/simplifying-volumes-of-interest-vois-definition-in-quantitative-spect-beyond-manual-definition-of-3d-whole-organ-vois
#13
Esther M Vicente, Martin A Lodge, Steven P Rowe, Richard L Wahl, Eric C Frey
PURPOSE: We investigated the feasibility of using simpler methods than manual whole-organ volume-of-interest (VOI) definition to estimate the organ activity concentration in single photon emission computed tomography (SPECT) in cases where the activity in the organ can be assumed to be uniformly distributed on the scale of the voxel size. In particular, we investigated an anatomic region-of-interest (ROI) defined in a single transaxial slice, and a single sphere placed inside the organ boundaries...
February 16, 2017: Medical Physics
https://www.readbyqxmd.com/read/28202301/preoperative-assessment-of-the-ureter-with-dual-phase-contrast-enhanced-computed-tomography-for-lateral-lumbar-interbody-fusion-procedures
#14
Shunsuke Fujibayashi, Bungo Otsuki, Hiroaki Kimura, Shimei Tanida, Kazutaka Masamoto, Shuichi Matsuda
BACKGROUND: Performing the minimally invasive lateral lumbar interbody fusion (LIF), such as the extreme lateral interbody fusion (XLIF) and oblique lateral interbody fusion (OLIF), through a retroperitoneal approach has become increasingly popular. Although urological injury is a major complication of LIF, the anatomical location of the ureter and its risk of injury have not been assessed. The purpose of this study was to evaluate the efficacy of dual-phase contrast-enhanced computed tomography for assessing the location of the ureter and risk of its injury in consecutive LIF cases...
February 12, 2017: Journal of Orthopaedic Science: Official Journal of the Japanese Orthopaedic Association
https://www.readbyqxmd.com/read/28188103/kidney-organoids-a-translational-journey
#15
REVIEW
Ryuji Morizane, Joseph V Bonventre
Human pluripotent stem cells (hPSCs) are attractive sources for regenerative medicine and disease modeling in vitro. Directed hPSC differentiation approaches have derived from knowledge of cell development in vivo rather than from stochastic cell differentiation. Moreover, there has been great success in the generation of 3D organ-buds termed 'organoids' from hPSCs; these consist of a variety of cell types in vitro that mimic organs in vivo. The organoid bears great potential in the study of human diseases in vitro, especially when combined with CRISPR/Cas9-based genome-editing...
March 2017: Trends in Molecular Medicine
https://www.readbyqxmd.com/read/28183161/radiotherapy-for-gastric-mucosa-associated-lymphoid-tissue-lymphoma-dosimetric-comparison-and-risk-assessment-of-solid-secondary-cancer
#16
Sun Hyun Bae, Dong Wook Kim, Mi-Sook Kim, Myung-Hee Shin, Hee Chul Park, Do Hoon Lim
Purpose: To determine the optimal radiotherapy technique for gastric mucosa-associated lymphoid tissue lymphoma (MALToma), we compared the dosimetric parameters and the risk of solid secondary cancer from scattered doses among anterior-posterior/ posterior-anterior parallel-opposed fields (AP/PA), anterior, posterior, right, and left lateral fields (4_field), 3-dimensional conformal radiotherapy (3D-CRT) using noncoplanar beams, and intensity-modulated radiotherapy composed of 7 coplanar beams (IMRT_co) and 7 coplanar and noncoplanar beams (IMRT_non)...
February 13, 2017: Radiation Oncology Journal
https://www.readbyqxmd.com/read/28181335/diagnostic-value-of-renal-perfusion-in-patients-with-chronic-kidney-disease-using-3d-arterial-spin-labeling
#17
Yu-Zhe Cai, Zhi-Cheng Li, Pan-Li Zuo, Josef Pfeuffer, Yu-Ming Li, Fang Liu, Rong-Bo Liu
PURPOSE: To evaluate the diagnostic value of 3D arterial spin labeling (ASL) for noninvasive quantification of renal blood flow (RBF) in patients with chronic kidney disease (CKD). MATERIALS AND METHODS: CKD patients (n = 27) and healthy volunteers (n = 36) underwent renal 3T ASL magnetic resonance imaging, with inversion times from 1200 to 2000 msec for volunteers in the preliminary test, and 1800 to 2000 msec for volunteers and CKD patients in the formal experiments...
February 9, 2017: Journal of Magnetic Resonance Imaging: JMRI
https://www.readbyqxmd.com/read/28177301/tracking-short-term-biodistribution-and-long-term-clearance-of-spio-tracers-in-magnetic-particle-imaging
#18
Paul Keselman, Elaine Yu, Xinyi Zhou, Patrick Goodwill, Prashant Chandrasekharan, R Matthew Ferguson, Amit Khandhar, Scott Kemp, Kannan Krishnan, Bo Zheng, Steven Conolly
Magnetic Particle Imaging (MPI) is an emerging tracer-based medical imaging modality that images non-radioactive, kidney-safe superparamagnetic iron oxide (SPIO) tracers. MPI offers quantitative, high-contrast and high-SNR images, so MPI has exceptional promise for applications such as cell tracking, angiography, brain perfusion, cancer detection, traumatic brain injury and pulmonary imaging. In assessing MPI's utility for applications mentioned above, it is important to be able to assess tracer short-term biodistribution as well as long-term clearance from the body...
February 8, 2017: Physics in Medicine and Biology
https://www.readbyqxmd.com/read/28164743/construction-of-a-3d-complex-renal-stone-print-and-kidney-print-for-comprehensive-surgical-planning-and-patient-information
#19
Matej Knezevic, Ivana Paksi, Boris Ruzic, Tomislav Galeta
No abstract text is available yet for this article.
January 1, 2017: Surgical Innovation
https://www.readbyqxmd.com/read/28156666/patterns-of-radiation-therapy-technology-use-in-the-treatment-of-bone-metastases
#20
Robert Anton Olson, Shilo Lefresne, Michael R McKenzie
211 Background: In recent years, there has been a transition from two-dimensional radiation therapy (2DRT) planning towards more advanced techniques such as three-dimensional conformal radiation therapy (3D-CRT), volumetric modulated arc therapy (VMAT), and stereotactic body radiation therapy (SBRT). Our study aim was to analyze these trends in the treatment of bone metastases. METHODS: All patients aged 18 and older who had received palliative intent RT for bone metastases between 2009-2014 and referred to any 1 of 6 regional cancer centers in British Columbia, Canada were reviewed...
October 9, 2016: Journal of Clinical Oncology: Official Journal of the American Society of Clinical Oncology
keyword
keyword
88434
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"