نتایج جستجو برای: tissue synchronization imaging

تعداد نتایج: 1342797  

Journal: :iranian journal of radiology 0
houman alizadeh tehran university of medical sciences, tehran, iran; tehran university of medical sciences, tehran, iran

background the most common soft tissue tumors during infancy and childhood are vascular lesions. although the vast majority of these lesions have typical clinical features with no need for any further exam, but sometimes atypical superficial or deeply located lesions require complementary studies to be diagnosed and classified. in that way it is also very important to exclude very less common m...

Journal: :EURASIP J. Adv. Sig. Proc. 2013
Qilei Zhang Wenge Chang Xiangyang Li

Bistatic spaceborne/stratospheric synthetic aperture radar (SAR) with a fixed receiver is a novel hybrid bistatic SAR system, in which a spaceborne SAR serves as the transmitter of opportunity, while a fixed receiver is mounted on a stratospheric platform. This paper presents an integrative synchronization and imaging approach for this particular system. Firstly, a novel synchronization method ...

Journal: :iranian journal of radiology 0
houman alizadeh chmc, tehran university of medical sciences; md, chmc, tehran university of medical sciences

the most common soft tissue tumors during infancy and childhood are vascular lesions. although the vast majority of these lesions have typical clinical features and do not require any further exam, but sometimes atypical superficial or deeply located lesions need complementary studies to be diagnosed and classified. in that way it is also very important to exclude very less common malignant sof...

Journal: :research in cardiovascular medicine 0
mozhgan parsaee echocardiography research center, rajaie cardiovascular medical and research center, iran university of medical sciences, tehran, ir iran fereshteh ghaderi department of cardiovascular medicine, echocardiography laboratory, atherosclerosis prevention research center, school of medicine, mashhad university of medical sciences, mashhad, ir iran; department of cardiovascular medicine, echocardiography laboratory, atherosclerosis prevention research center, school of medicine, mashhad university of medical sciences, mashhad, ir iran. tel: +98-9137913316, fax: +98-5138544504 azin alizadehasl echocardiography research center, rajaie cardiovascular medical and research center, iran university of medical sciences, tehran, ir iran hooman bakhshandeh rajaie cardiovascular medical and research center, iran university of medical sciences, tehran, ir iran

conclusions based on the results of this study, we suggest the use of a novel “time from the beginning of isovolumetric contraction to the peak of the s wave” (ttp) parameter in the tdi of the base of the rv free wall to predict ph with acceptable accuracy in comparison with rhc. results in our study, the ttp showed a significant inverse relationship with the pap. based on our results, a ttp of...

Introduction:In PET imaging, one or both of two annihilation photons may change the direction before reaching the detector due to Compton scattering interaction in body. .Methods:This article, a Monte Carlo simulation study, examined the effect of soft tissue on this error.In this work, the PET BiographTM 6 scanner, a simple geometry of soft tissue -including a sphere of soft tissue in center ...

Journal: :Acta Cardiologica Sinica 2017
Fatma Hizal Erdem Serkan Ozturk Selçuk Öztürk Alim Erdem Selim Ayhan Mustafa Öztürk İbrahim Dönmez Davut Baltacı Mehmet Yazıcı

BACKGROUND The aim of our study was to evaluate in stable outpatients with systolic heart failure (HF) the 3 months effect of ivabradine on LV synchronization and Tei index in stable outpatients with systolic HF. METHODS We evaluated prospectively 40 (30 males, 10 females) patients with HF. All patients were evaluated before and after treatment by transthoracic M mode, two dimensional (2D), p...

2017
D Miguez E F Hodson-Tole I Loram P J Harding

Ultrasound (US) imaging is a well-recognized technique for the study of static tissues but its suitability for studying tissue dynamics depends upon accurate frame time information, which may not always be available to users. Here we present methods to quantify the inter-frame interval (IFI) variability, and evaluate different procedures for collecting temporal information from two US-imaging d...

Journal: :Physical review research 2021

This paper explores the nonlinear dynamics of coupled inner-ear hair cells in living tissue and show that onset chaotic individual oscillators enhances synchronization signal detection system.

Journal: :iranian journal of nuclear medicine 1999
armaghan fard-esfahani mohammad eftekhari arsalan vakili mohsen saghari

widespread studies on tumor diagnosis has led to the development of techniques with greater sensitivity and improved specificity for detection of occult and small subclinical tumors. tumor imaging by radiolabeling of tumor-specific antibodies (immunoscintigraphy) or tissue specific biochemical agents (receptor imaging) and especially physiologic imaging with positron emitters (pet), have opened...

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