نتایج جستجو برای: diffusion magnetic resonance imaging

تعداد نتایج: 871150  

Journal: :iranian journal of radiology 0
yeliz pekcevik department of radiology, tepecik training and research hospital, izmir, turkey; department of radiology, tepecik training and research hospital, izmir, turkey. tel: +90-2324696969, fax: +90-2324330756 mehmet onur kahya department of radiology, tepecik training and research hospital, izmir, turkey ahmet kaya department of orthopaedic surgery, tepecik training and research hospital, izmir, turkey

conclusion our preliminary results have shown that although there is some overlap between benign and malignant tumors, adding dwi, mr imaging to routine soft tissue tumor protocols may improve diagnostic accuracy. results there was only one patient with a malignant cystic tumor and was not included in the statistical analysis. the median adc values of benign and malignant tumors were 2.31 ± 1.2...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه گیلان - دانشکده فنی و مهندسی 1390

magnetic resonance imaging (mri) is a notable medical imaging technique that makes of phenomenon of nuclear magnetic resonance. because of the resolution and the technology being harmless, mri has considered as the most desirable imaging technique in clinical applications. the visual quality of mri plays an important role in accuracy of medical delineations that can be seriously degraded by exi...

Journal: :iranian journal of radiology 0
eun kyung park department of radiology, anam hospital, korea university college of medicine, seoul, korea kyu ran cho department of radiology, anam hospital, korea university college of medicine, seoul, korea; department of radiology, korea university college of medicine 73, inchon-ro, seongbuk-gu, seoul 02841, korea. tel: +82-29205578, fax: +82-29293796 bo kyoung seo department of radiology, ansan hospital, korea university college of medicine, gyeonggi-do, korea ok hee woo department of radiology, guro hospital, korea university college of medicine, seoul, korea sung bum cho department of radiology, anam hospital, korea university college of medicine, seoul, korea jeoung won bae department of surgery, anam hospital, korea university college of medicine, seoul, korea

results a low adc value was associated with lymph node metastasis (p < 0.01) and with high ki-67 protein levels (p = 0.03). there were no significant differences in the adc values among the histological grade (p = 0.48), molecular subtype (p = 0.51), tumor size (p = 0.46), and p53 protein level (p = 0.62). conclusion the pre-operative use of the 3.0 tesla dwi could provide information about the...

Journal: :iranian journal of radiology 0
mahsa raisi-nafchi department of radiology technology, school of allied medical sciences, shahid beheshti university of medical sciences, tehran, iran fariborz faeghi department of radiology technology, school of allied medical sciences, shahid beheshti university of medical sciences, tehran, iran; department of radiology technology, school of allied medical sciences, shahid beheshti university of medical sciences, tehran, iran alireza zali department of neurosurgery, functional neurosurgery research center, shohada tajrish hospital, shahid beheshti university of medical sciences, tehran, iran hamidreza haghighatkhah department of radiology, shohada tajrish hospital, shahid beheshti university of medical sciences, tehran, iran jalal jalal-shokouhi jam-e-jam medical imaging center, tehran, iran

background diffusion-weighted imaging (dwi) is a form of magnetic resonance imaging (mri) based on measuring the random brownian motion of water molecules within the biological tissues and is particularly useful in tumor characterization. objectives the purpose of this study was to evaluate the diagnostic value of dw mri and the apparent diffusion coefficient (adc) for preoperative grading of a...

Journal: :iranian journal of radiology 0
selim bakan department of radiology, cerrahpasa medical faculty, istanbul university, istanbul, turkey; department of radiology, cerrahpasa medical faculty, istanbul university, istanbul, turkey. tel: +90-2124143167, fax: +90-2124143167 deniz cebi olgun department of radiology, cerrahpasa medical faculty, istanbul university, istanbul, turkey sedat giray kandemirli department of radiology, cerrahpasa medical faculty, istanbul university, istanbul, turkey onur tutar department of radiology, cerrahpasa medical faculty, istanbul university, istanbul, turkey cesur samanci department of radiology, cerrahpasa medical faculty, istanbul university, istanbul, turkey suleyman dikici department of radiology, cerrahpasa medical faculty, istanbul university, istanbul, turkey

conclusion the dwmri is a useful technique for evaluating activity of fistulas with abscess. perianal fistula visibility is greater with combined t2wi and dwmri than t2wi alone. patients and methods fifty-three patients with 56 perianal fistulas were included in the current retrospective study. the t2-weighted imaging (t2wi) and dwmri were performed and apparent diffusion coefficient (adc) valu...

Journal: :journal of medical signals and sensors 0
siham ait oussous saïd boujraf

the goal is assessing the diffusion magnetic resonance imaging (dmri) method effi ciency in characterizing focal hepatic lesions (fhls). about 28-fhl patients were studied in radiology and clinical imaging department of our university hospital using 1.5 tesla mri system between january 2010 and june 2011. patients underwent hepatic mri consisting of dynamic t1- and t2-weighted imaging. the dmri...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه علوم پایه دامغان - دانشکده علوم پایه دامغان 1394

در بین انواع نانوذره ها، نانوذره های مغناطیسی (mnps) نظر به کاربرد های بسیاری که در حوزه های مختلفی همچون مایعات مغناطیس (magnetic fluids) کاتالیز (catalysis) ، تصویربرداری رزونانس مغناطیسmagnetic resonance imaging) ) و بازسازی محیط زیست (environmental remediation) دارند توجه پژوهشگران را به خود جلب نموده اند [1]. این نانوذره ها سوپرپارامغناطیس هایی اند که می توانند جذب میدان مغاطیسی شوند اما خ...

Journal: :middle east journal of cancer 0
sedigheh tahmasebi general surgery department, shiraz university of medical sciences, shiraz, iran mohammad hasan hashemizadeh general surgery department, shiraz university of medical sciences, shiraz, iran abdolrasoul talei general surgery department, shiraz university of medical sciences, shiraz, iran sepideh sefidbakht department of radiology, shiraz university of medical sciences, shiraz, iran maral mokhtari department of pathology, shiraz university of medical sciences, shiraz, iran abdolkhalegh keshavarzi general surgery department, shiraz university of medical sciences, shiraz, iran

background : magnetic resonance imaging of the breast is becoming a useful adjunct to mammography and sonography for the detection of breast lesions. however, it is not yet accepted as a routine examination for all breast cancer patients due to the lack of data regarding whether breast magnetic resonance imaging impacts recurrence or survival. this trial examines the use of magnetic resonance i...

Journal: :iranian journal of radiology 0
fariba allahmoradi kermanshah university of medical sciences, kermanshah, iran; abbas haghparast kermanshah university of medical sciences, kermanshah, iran salman zakariaee tehran university of medical sciences, tehran, iran

conclusions adc valuecould be a prognostic factor to monitor the response to therapy for patients with cervical cancer. the addition of dw-mri to the conventional mri protocolsconsiderably improved the diagnostic ability of mr imaging method for tumor evaluations. results studies had shown thatthe mean adc value of cervical carcinoma (1.110 ± 0.175 × 10-3 mm2/s)is significantly lower than that ...

Journal: :archives of cardiovascular imaging 0
sim sai tin shantou medical center, shantou, china; shantou medical center, shantou, china. viroj wiwanitkit visiting professor, hainan medical university, haikou, china

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