Výsledky vyhledávání - "D. K. Nassiri"

The unravelling of primary myocardial impairment in Marfan syndrome by modern echocardiography

Autor: Anatoli Kiotsekoglou, George R. Sutherland, A. J Camm, Anne H. Child, James C. Moggridge, D. K. Nassiri

Publikováno v: Heart. 95:1561-1566

Use of echocardiography has dramatically changed the way in which patients with Marfan syndrome are diagnosed, monitored and treated. Owing to the lethal nature of aortic complications, priority has been given to the assessment of the aortic root. Ec

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::daa40c46410aa831b7b1ec9f2ec3ddcc
https://doi.org/10.1136/hrt.2008.152934

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Evaluation of the Accuracy of 3-Dimensional Ultrasonography of the Kidney Using an In Vitro Renal Model

Autor: James Pilcher, Ken Anson, D. K. Nassiri, Uday Patel, Babbin S. John, David Rowland

Publikováno v: Journal of Ultrasound in Medicine. 28:155-162

Objective. Three-dimensional ultrasonography (3DUS) has recently become a reality because of advances in ultrasound probes and machine processing ability. We have developed an anthropomorphic phantom of the human loin to assess both the accuracy of 3

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::117289cbc8fec88ae9d2a31f8aa6d1dc
https://doi.org/10.7863/jum.2009.28.2.155

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Percutaneous Renal Intervention: Comparison of 2-D and Time-Resolved 3-D (4-D) Ultrasound for Minimal Calyceal Dilation Using an Ultrasound Phantom and Fluoroscopic Control

Autor: Lakshmi Ratnam, Miles Walkden, D. K. Nassiri, Babbin S. John, Siew Nayak, Ken Anson, David Rowland, Uday Patel

Publikováno v: Ultrasound in Medicine & Biology. 34:1765-1769

The rapid advances made by ultrasound in recent years have increasingly taken 3-D ultrasound (3DUS) and 4-D ultrasound (4DUS) from the research setting to the patient's bedside. There are still unexplored areas like renal percutaneous intervention, w

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::06347536c5c2a55676d654a2887f2cd0
https://doi.org/10.1016/j.ultrasmedbio.2008.03.014

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The Relationship Between Ultrasound Characteristics of Human Cataract and in vitro Measurement of Mechanical Characteristics of the Lens after Extracapsular Cataract Surgery

Autor: G M Thompson, J. M. A. Smith, Mohamed A. El-Brawany, Homayoun Tabandeh, D. K. Nassiri

Publikováno v: Ultrasound. 13:231-237

In this paper, the relationship between ultrasound and physical characteristics of the extracted lens has been investigated. A pre-operative examination and assessment of cataract biometry and LOCSIII grade have been applied to 16 patients who had a

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::eb88f62260e97ac8df9c3f21e9cde808
https://doi.org/10.1179/174313405x60006

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Nuchal translucency thickness measurement: repeatability using a virtual ultrasound scanner

Autor: Baskaran Thilaganathan, Amar Bhide, V. R. Newey, D. K. Nassiri

Publikováno v: Ultrasound in Obstetrics and Gynecology. 21:596-601

Aim To use a PC-based virtual ultrasound scanner (VirUS) in the investigation of inter- and intraoperator nuchal translucency (NT) thickness measurement repeatability of experienced ultrasound operators. Methods Realistic fetal ultrasound images of d

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::699d5f08870d728ec0702b8096131823
https://doi.org/10.1002/uog.124

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Microemboli detection using ultrasound backscatter

Autor: Mohamed A. El-Brawany, D. K. Nassiri

Publikováno v: Ultrasound in Medicine & Biology. 28:1439-1446

Microemboli detection and characterisation have recently received great attention due to its clinical importance in the management of cerebrovascular disease. The new method presented in this paper is directly based on the idea that the ultrasound (U

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::36dc783dba8e35b72dc2b537dfbf0d9b
https://doi.org/10.1016/s0301-5629(02)00547-1

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New approach for modelling ultrasound blood backscatter signal

Autor: D. K. Nassiri, Mohamed A. El-Brawany

Publikováno v: Ultrasound in Medicine & Biology. 28:527-534

The ultrasound (US) scattered signal from blood has been treated as a random signal by many investigators. However, the degree of randomness of a medium is a relative term that can change considerably with the resolution of the sensor. In this study,

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1c5f9cb066954046abc3057a0f0ffd24
https://doi.org/10.1016/s0301-5629(02)00476-3

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Online artery diameter measurement in ultrasound images using artificial neural networks

Autor: V. R. Newey, D. K. Nassiri

Publikováno v: Ultrasound in Medicine & Biology. 28:209-216

An automated online technique is described for measurement of artery diameter in flow-mediated dilation (FMD) ultrasound (US) images, using artificial neural networks to identify and track artery walls. This allows FMD results to be calculated withou

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::53f0a56af5563b5fa620146154cd5eb3
https://doi.org/10.1016/s0301-5629(01)00505-1

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Hardness and ultrasonic characteristics of the human crystalline lens

Autor: G M Thompson, Homayoun Tabandeh, Mark R Wilkins, D. K. Nassiri, Abdul Karim

Publikováno v: Journal of Cataract and Refractive Surgery. 26:838-841

Purpose: To evaluate the relationship between hardness of the human crystalline lens and its acoustic characteristics.Setting: St. George's Hospital Medical School, University of London, London, United Kingdom.Methods: Cataractous lenses from patient

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::195d03fc9868037166f23df9495cdef7
https://doi.org/10.1016/s0886-3350(00)00305-9

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