27 results match your criteria 'feret's diameter'

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Spontaneous portosystemic shunts in cirrhosis: Detection, implications, and clinical associations.

Dig Liver Dis 2020 Dec 16. Epub 2020 Dec 16.

Department of Medicine-DIMED(,) University of Padova, Padova, Italy. Electronic address:

Background: Spontaneous portosystemic shunts (SPSS) are common in cirrhosis. Their characterization and clinical implications remain unclear.

Aims: To devise a system of assessment of these shunts, and assess their clinical implications METHODS: We retrospectively studied patients with cirrhosis who underwent imaging in a liver transplant program. Read More

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December 2020

Decrease in serum testosterone levels after short-term occupational exposure to diisononyl phthalate in male workers.

Occup Environ Med 2020 04 20;77(4):214-222. Epub 2020 Feb 20.

Department of Endocrinology, University Hospital of Nancy, Vandoeuvre-Les-Nancy, France.

Objective: The objective of the study was to examine the effects of occupational exposure to diisononyl phthalate (DINP) on serum testosterone levels in male workers.

Methods: From 2015 to 2018, 97 male workers were recruited from six French factories in the plastics industry. In a short longitudinal study, changes over 3 days in the level of total or free serum testosterone and DINP exposure were measured. Read More

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Aerial application methods control spider mites on corn in Kansas, USA.

Exp Appl Acarol 2019 Apr 15;77(4):571-582. Epub 2019 May 15.

Aerial Application Technology Research Unit, USDA-ARS, 3103 F and B Road, College Station, TX, 77845, USA.

The Banks grass mite, Oligonychus pratensis (Banks), and two-spotted spider mite, Tetranychus urticae Koch, are important chelicerae herbivores on irrigated corn in Kansas, USA. They cause loss of foliage, stalk breakage, kernel shrinkage and yield loss. Aerial application methods were evaluated to control spider mites in a commercial corn field in August, 2017, near Hoxie, Kansas. Read More

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Using Z-scores to evaluate levator hiatal dimensions with four-dimensional translabial ultrasound.

J Obstet Gynaecol Res 2017 Dec 6;43(12):1840-1847. Epub 2017 Oct 6.

Department of Ultrasonography, The Second Xiangya Hospital, Central South University, Changsha, Hunan, China.

Aim: This study represents the first attempt to use 'Z-scores' to assess levator hiatal dimensions and quantify hiatal expansion.

Methods: We undertook a retrospective study on the data of 110 nulliparae and 73 pelvic organ prolapse (POP) patients who had a clinical POP exam and translabial 4-D ultrasound. We used Z-scores to normalize the dimensions of nulliparae levator hiatus and to build a Z-score model to evaluate the 'hiatal ballooning' against the POP staging. Read More

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December 2017

Version 1.1 of the international spinal cord injury skin and thermoregulation function basic data set.

Spinal Cord 2017 Jun 17;55(6):566-569. Epub 2017 Jan 17.

Center of Excellence in Rehabilitation Medicine, Brain Center Rudolf Magnus, University Medical Center Utrecht, Utrecht, The Netherlands.

Objective: To describe the changes made to the international spinal cord injury (SCI) skin and thermoregulation function basic data set in version 1.1.

Setting: International. Read More

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The definition of IVM is clear-variations need defining.

Hum Reprod 2016 11 22;31(11):2411-2415. Epub 2016 Sep 22.

Discipline of Obstetrics & Gynaecology, School of Women's & Children's Health, University of New South Wales, Level 4, Room 421, Wallace Wurth Building, Botany Street, Sydney, NSW 2052, Australia.

Oocyte in vitro maturation (IVM) is currently defined as the maturation in vitro of immature cumulus-oocyte complexes collected from antral follicles. This is the original definition as first described by Pincus and Enzmann and then by Edwards many decades ago, and this clear and unambiguous definition has served us well ever since. In an attempt to clarify apparent differences among clinicians, the following revised definition of IVM was recently proposed: 'The retrieval of oocytes from small and intermediate sized follicles in an ovary before the largest follicle has surpassed 13 mm in mean diameter'. Read More

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November 2016

Curtain Flow Column: Optimization of Efficiency and Sensitivity.

J Vis Exp 2016 06 12(112). Epub 2016 Jun 12.

School of Science and Health, University of Western Sydney;

Active Flow Technology (AFT) is a form of column technology that increases the separation performance of a HPLC column through the use of a specially purpose built multiport end-fitting(s). Curtain Flow (CF) columns belong to the AFT suite of columns, specifically the CF column is designed so that the sample is injected into the radial central region of the bed and a curtain flow of mobile phase surrounding the injection of solute prevents the radial dispersion of the sample to the wall. The column functions as an 'infinite diameter' column. Read More

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Cachexia induces head and neck changes in locally advanced oropharyngeal carcinoma during definitive cisplatin and image-guided volumetric-modulated arc radiation therapy.

Eur J Clin Nutr 2016 06 13;70(6):738-42. Epub 2016 Apr 13.

Radiation Oncology Division, Sacro Cuore Don Calabria Cancer Care Center, Negrar-Verona, Italy.

Background/objectives: Cancer cachexia is a syndrome characterized by weight loss (WL) and sarcopenia. Aim of the study was to assess the impact of cachexia on head and neck changes during definitive cisplatin and image-guided volumetric-modulated arc radiation therapy in a series of locally advanced oropharyngeal cancer.

Subjects/methods: Volume variations of sternocleidomastoid muscle (SCM) were considered as surrogate of muscle changes related to sarcopenia. Read More

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Measurement and interpretation of skin prick test results.

Clin Transl Allergy 2015 23;6. Epub 2016 Feb 23.

Department of Internal Medicine, Section of Allergology, Erasmus MC, Burg. St. Jacobsplein 51, 3015CA Rotterdam, The Netherlands.

Background: There are several methods to read skin prick test results in type-I allergy testing. A commonly used method is to characterize the wheal size by its 'average diameter'. A more accurate method is to scan the area of the wheal to calculate the actual size. Read More

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February 2016

On growth measurements of abdominal aortic aneurysms using maximally inscribed spheres.

Med Eng Phys 2015 Jul 23;37(7):683-91. Epub 2015 May 23.

Department of Mechanical Engineering, Michigan State University, 2457 Engineering Building, East Lansing, MI 48824, USA. Electronic address:

The maximum diameter, total volume of the abdominal aorta, and its growth rate are usually regarded as key factors for making a decision on the therapeutic operation time for an abdominal aortic aneurysm (AAA) patient. There is, however, a debate on what is the best standard method to measure the diameter. Currently, two dominant methods for measuring the maximum diameter are used. Read More

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Doses metrics and patient age in CT.

Radiat Prot Dosimetry 2016 Mar 13;168(3):374-80. Epub 2015 May 13.

Department of Radiology and Radiological Science, MUSC, 96 Jonathan Lucas St, MSC 323, Charleston, SC 29425-3230, USA

The aim of this study was to investigate how effective dose and size-specific dose estimate (SSDE) change with patient age (size) for routine head and abdominal/pelvic CT examinations. Heads and abdomens of patients were modelled as a mass-equivalent cylinder of water corresponding to the patient 'effective diameter'. Head CT scans were performed at CTDIvol(S) of 40 mGy, and abdominal CT scans were performed at CTDIvol(L) of 10 mGy. Read More

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Platform switching minimises crestal bone loss around dental implants: truth or myth?

Authors:
G E Romanos F Javed

J Oral Rehabil 2014 Sep 27;41(9):700-8. Epub 2014 May 27.

School of Dental Medicine, Stony Brook University, Stony Brook, NY, USA.

The aim was to assess the role of platform switching (PS) in minimising crestal bone loss around dental implants through a systematic review of the currently available clinical evidence. To address the focused question 'Does PS minimise crestal bone loss compared with non-platform-switched (NPS) implants?', PubMed/Medline and Google Scholar databases were explored from 1986 up to and including December 2013 using the following key words in different combinations: 'bone loss', 'dental implant', 'diameter', 'mandible', 'maxilla' and 'platform switching'. Letters to the Editor, unpublished data, historical reviews, case reports and articles published in languages other than English were excluded. Read More

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September 2014

How best to measure the levator hiatus: evidence for the non-Euclidean nature of the 'plane of minimal dimensions'.

Ultrasound Obstet Gynecol 2010 Dec 19;36(6):755-8. Epub 2010 Jul 19.

Auckland Bioengineering Institute, Auckland, New Zealand.

Objective: To clarify whether the 'plane of minimal dimensions' of the levator hiatus on three-dimensional (3D) ultrasound accurately represents the minimal anatomical transverse hiatal dimension during a Valsalva maneuver.

Methods: In this retrospective study of 3D transperineal ultrasound and magnetic resonance (MR) imaging, datasets from 19 female participants were used to measure the transverse diameter of the levator hiatus using the plane of minimal dimensions on maximum Valsalva maneuver. The term 'apparent minimal transverse diameter' (aMTD) was used to define the transverse diameter measured using axial ultrasound and comparable axial or coronal MR images. Read More

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December 2010

The effects of HCl on silicon nanowire growth: surface chlorination and existence of a 'diffusion-limited minimum diameter'.

Nanotechnology 2009 Nov 29;20(47):475307. Epub 2009 Oct 29.

CEA, INAC/SP2M, Laboratoire SiNaPS, 17 Rue des Martyrs, F-38054 Grenoble, France.

Silicon nanowires were grown by chemical vapour deposition on gold catalysts using SiH4 and HCl diluted in H2. The effects of HCl on the wires and the catalysts were investigated for various HCl partial pressures. Keeping all other parameters constant, gold migration on the silicon surface is found to be dramatically reduced by the surface chlorination induced by HCl. Read More

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November 2009

[Expression of MMP-9 and VEGF in breast cancer: correlation with other prognostic indicators].

Rev Bras Ginecol Obstet 2008 Jun;30(6):287-93

Programa de Pós-graduação em Medicina: Ciências Médicas, Faculdade de Medicina, Universidade Federal do Rio Grande do Sul.

Purpose: to analyze the expression of matrix metalloproteinase-9 (MMP-9) and of vascular endothelial growth factor (EVGF) in a group of patients with primary breast cancer, and correlate them to one another and with other prognostic indicators.

Methods: transversal study that has analyzed the expression of MMP-9 and of VEGF in 88 consecutive cases of primary breast tumors. The samples were obtained from patients with primary breast cancer, submitted to surgical treatment in the Clinical Hospital of Porto Alegre of the Universidade Federal do Rio Grande do Sul, from January 2000 to December 2004. Read More

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A reaction-diffusion analysis of energetics in large muscle fibers secondarily evolved for aerobic locomotor function.

J Exp Biol 2006 Sep;209(Pt 18):3610-20

Department of Biology and Marine Biology, University of North Carolina Wilmington, 601 South College Road, Wilmington, NC 28403-5915, USA.

The muscles that power swimming in the blue crab, Callinectes sapidus, grow hypertrophically, such that in juvenile crabs the cell diameters are <60 microm, whereas fibers of the adult crabs often exceed 600 microm. Thus, as these animals grow, their muscle fibers greatly exceed the surface area to volume ratio and intracellular diffusion distance limits of most cells. Previous studies have shown that arginine phosphate (AP) recovery in the anaerobic (light) fibers, which demonstrate a fiber size dependence on anaerobic processes following contraction, is too slow to be restricted by intracellular metabolite diffusive flux, in spite of the fiber's large size. Read More

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September 2006

[Consistency analysis in the use of abdominal ultrasonography for diagnosing schistosomiasis japonica-related morbidity].

Zhongguo Ji Sheng Chong Xue Yu Ji Sheng Chong Bing Za Zhi 2005 Aug;23(4):217-20

Department of Epidemiology, School of Public Health, Fudan University, Shanghai 200032, China.

Objective: To explore the consistency among different indices of abdominal ultrasonography for the diagnosis of schistosomiasis japonica related morbidity and the best combination of the indices.

Methods: Six indices of abdominal ultrasonography were selected to investigate schistosomiasis related morbidity in residents in a village of Hunan Province, and the Kappa coefficients of diagnostic consistency among different indices and Cronbach's alpha coefficients of different combinations of indices were computed.

Results: The Kappa coefficients of 'liver parenchyma > or = grade II' with 'right midclavicular subcostal' and with 'portal vein diameter' were 0. Read More

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Self-similarity of complex networks.

Nature 2005 Jan;433(7024):392-5

Levich Institute and Physics Department, City College of New York, New York, New York 10031, USA.

Complex networks have been studied extensively owing to their relevance to many real systems such as the world-wide web, the Internet, energy landscapes and biological and social networks. A large number of real networks are referred to as 'scale-free' because they show a power-law distribution of the number of links per node. However, it is widely believed that complex networks are not invariant or self-similar under a length-scale transformation. Read More

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January 2005

Histological parameters for the quantitative assessment of muscular dystrophy in the mdx-mouse.

Neuromuscul Disord 2004 Oct;14(10):675-82

MyoContract Ltd, Hammerstrasse 25, CH-4410 Liestal, Switzerland.

Duchenne muscular dystrophy is a severe X-linked hereditary disease caused by the absence of functional dystrophin. The dystrophin-deficient mdx-mouse strain is a widely used animal model for dystrophin-deficiency. Several therapeutic approaches for muscular dystrophy have been proposed by different laboratories. Read More

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October 2004

Sonographic assessment of amniotic fluid volume between 11 and 24 weeks of gestation: construction of reference intervals related to gestational age.

Ultrasound Obstet Gynecol 2001 May;17(5):410-5

Institute of Obstetrics and Gynaecology, University of Parma, Parma, Italy.

Objective: At present, most of the methods for sonographic assessment of amniotic fluid volume are unreliable in the second trimester of pregnancy, or else they do not present nomograms related to gestational age.

Design: The aim of this prospective cross-sectional study was to construct normal reference ranges of four ultrasound parameters for the evaluation of amniotic fluid volume which could be applied in the second trimester. For these parameters we calculated normal curve limits suitable for use in clinical practice. Read More

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Precision of automatic measurements of pigmented skin lesion parameters with a MelaFind(TM) multispectral digital dermoscope.

Melanoma Res 2000 Dec;10(6):563-70

Electro-Optical Sciences, Inc., Irvington, NY 10533, USA.

The purpose of this study was to assess the precision of automatic computerized measurement of parameters that may be useful in the differentiation of malignant melanoma from benign pigmented skin lesions, and also to determine the feasibility of quantitative monitoring of skin lesions over time. Ten independent sequences of images were acquired with a MelaFind multispectral digital dermoscope for each of 12 benign or malignant pigmented skin lesions. The sequences of images were processed automatically to provide 10 independent measurements of the various parameters for each lesion. Read More

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December 2000

Test of stability as an aid to decide the need for osteotomy in association with open reduction in developmental dysplasia of the hip.

J Bone Joint Surg Br 2000 Jan;82(1):17-27

Royal National Orthopaedic Hospital Trust, Stanmore, Middlesex, England.

After open reduction for developmental dysplasia of the hip (DDH), a pelvic or femoral osteotomy may be required to maintain a stable concentric reduction. We report the clinical and radiological outcome in 82 children (95 hips) with DDH treated by open reduction through an anterior approach in which a test of stability was used to assess the need for a concomitant osteotomy. The mean age at the time of surgery was 28 months (9 to 79) and at the latest follow-up, 17 years (12 to 25). Read More

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January 2000

Nodular histogenetic type -- the most significant factor for thick melanoma: implications for prevention.

Melanoma Res 1998 Oct;8(5):403-11

Department of Oncology, Karolinska Hospital, Stockholm, Sweden.

Tumour thickness is the most important prognostic factor in malignant melanoma. To reduce the melanoma-related mortality, factors related to the presentation of thick melanoma have to be identified. Three samples of melanoma patients (n=694) were studied for this purpose. Read More

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October 1998

A new method for casting discrepancy: some results for a phosphate-bonded investment.

Authors:
E K Ho B W Darvell

J Dent 1998 Jan;26(1):59-68

Dental Technology Unit, University of Hong Kong, Prince Philip Dental Hospital, Hong Kong.

Objectives: An accurate and realistic casting discrepancy method applicable to base metal alloys has hitherto been lacking. The purpose of this study was to develop a method for determining casting discrepancy free of interference from oxide, slag and surface defects, working under realistic conditions. In addition, a variable was sought that could be used for calibrating the casting process to allow for local errors. Read More

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January 1998

Morphometry versus densitometry--a comparison by use of casts of human coronary arteries.

Int J Card Imaging 1992 ;8(2):121-30

Cardiology Center, University Hospital, Geneva, Switzerland.

Geometric and densitometric methods for quantitative coronary arteriography have generally been compared by use of phantoms simulating arteries with circular lumina ('Hole phantoms'). We have used more adequate phantoms obtained by casting disease-free and atheromatous human coronary arteries. The phantoms, filled with contrast medium, were imaged digitally (1024 x 1024 x 10 matrix) under experimental conditions simulating routine coronary angiography. Read More

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Morphometric versus densitometric assessment of coronary vasomotor tone--an overview.

Eur Heart J 1989 Nov;10 Suppl F:49-53

Cardiology Center, University Hospital, Geneva, Switzerland.

The main advantage of the morphometric approach is that the spatial orientation of the vessel with respect to the image intensifier is not very important. Its most severe limitations are that reasonable accuracy can only be obtained with circular lumina, and that accuracy decreases rapidly with the vessel diameter. The densitometric approach is much less dependent on the shape of the lumen and on the correct identification of the vessel wall in the image. Read More

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November 1989

Radioautographic method for quantifying regional monoamine innervations in the rat brain. Application to the cerebral cortex.

Brain Res 1988 Feb;441(1-2):233-59

Département de Physiologie, Faculté de Médecine, Université de Montréal, Que, Canada.

Conditions leading to selective and complete labeling of the noradrenaline (NA) and serotonin (5-HT) innervations in rat cerebral cortex were sought by incubating 200-micron-thick whole hemisphere slices with various combinations of tritiated monoamines and uptake blockers at different concentrations in the presence of a monoamine oxidase inhibitor. After fixation with glutaraldehyde, post-fixation with osmium tetroxide and flat-embedding in Epon, 4-micron-thick sections of the entire slices were radioautographed by dipping in nuclear emulsion. As previously reported, dopamine (DA) terminals could be specifically visualized and counted following incubation with 1 micron [3H]DA and 5 microM desipramine (DMI) with or without 5 microM citalopram (CITAL). Read More

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February 1988
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