نتایج جستجو برای: magnetic resonance imaging mri

تعداد نتایج: 792955  

2017
Sachin Dubey Jag Mohan Keller

The problem of image reconstruction from sensitivity encoded data is formulated in a general fashion and solved for arbitrary coil configurations and k-space sampling patterns. To achieve increased acquisition speed in magnetic resonance imaging Special attention is given to the currently most practical case, namely, sampling a common Cartesian grid with reduced density. Scan time was reduced t...

Journal: :middle east journal of cancer 0
milad baradaran-ghahfarokhi medical physics and medical engineering department, school of medicine, isfahan university of medical sciences, isfahan, iran mohammad hadi bagheri medical imaging research center and department of radiology, shiraz university of medical sciences, shiraz, iran mehrzad lotfi medical imaging research center and department of radiology, shiraz university of medical sciences, shiraz, iran mohammad amin mosleh-shirazi center for research in medical physics and biomedical engineering and radiotherapy department, shiraz university of medical sciences, shiraz, iran reza faghihi medical radiation department, school of mechanical engineering, shiraz university, shiraz, iran kamal hadad medical radiation department, school of mechanical engineering, shiraz university, shiraz, iran

background : safe dose escalation is highly desirable in radiotherapy for prostate cancer. prostate displacement due to bladder filling can be significant, so improved targeting of the prostate by ultrasound imaging potentially allows for a reduction in the target margin and consequently less toxicity. this study estimates the accuracy of ultrasound for prostate and bladder volume measurements ...

Journal: :iranian journal of radiology 0
si shen medical imaging center, the first affiliated hospital of jinan university, jinan university, guangzhou, china hao wang pain clinic, the first affiliated hospital of jinan university, jinan university, guangzhou, china; pain clinic, the first affiliated hospital of jinan university, jinan university, guangzhou, china. tel: +86-13430267880, fax: +86-2038688416 jing zhang medical imaging center, the first affiliated hospital of jinan university, jinan university, guangzhou, china fei wang medical imaging center, the first affiliated hospital of jinan university, jinan university, guangzhou, china si-run liu medical imaging center, the first affiliated hospital of jinan university, jinan university, guangzhou, china

conclusion adc, fa, and t2* values may quantitatively reflect the microstructural characteristics of np, therefore they could be used to detect the minimal changes of early ldd. results the adc, fa, and t2* values were different (p < 0.05) among different rois within the same disc or among corresponding rois in different level discs. while the average values of adc increased regularly with the ...

Journal: :Physics World 2023

Researchers in the US have used magnetic resonance imaging (MRI) to create highest-resolution image of a mouse brain ever made.

Journal: :iranian journal of child neurology 0
reza nafisi-moghadam radiologist , associate professor , department of radiology, shahid sadoughi university of medical sciences, yazd, iran abolghasem rahimdel neurologist, assistant professor, department of neurology, shahid sadoughi university of medical sciences, yazd, iran tahereh shanbeh-zadeh general physician razieh fallah pediatric neurologist, associate professor, department of pediatrics, growth disorders of children research center , shahid sadoughi university of medical sciences, yazd, iran

purpose: suitable magnetic resonance imaging (mri) techniques from conventional to new devices can help physicians in diagnosis and follow up of multiple sclerosis (ms) patients. the aim of present research was to compare effectiveness of fluid attenuation inversion recovery (flair) sequence of conventional mri and diffuse weighted imaging (dwi) sequence as a new technique in detection of brain...

Journal: :iranian journal of neurology 0
mitra ansari dezfouli school of biology, college of science, university of tehran, tehran, iran. elham jaberi school of biology, college of science, university of tehran, tehran, iran afagh alavi school of biology, college of science, university of tehran, tehran, iran mohammad rezvani department of neurology, tehran university of medical sciences, tehran, iran gholamali shahidi associate professor, department of neurology, tehran university of medical sciences, tehran, iran elahe elahi professor, department of biotechnology, college of science, university of tehran, tehran, iran

background: pantothenate kinase associated neurodegeneration (pkan) is the most prevalent type of neurodegeneration with brain iron accumulation (nbia) disorders characterized by extrapyramidal signs, and 'eye-of-the-tiger' on t2 brain magnetic resonance imaging (mri) characterized by hypointensity in globus pallidus and a hyperintensity in its core. all pkan patients have homozygous or compoun...

Journal: :The Journal of the Acoustical Society of America 1993

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