نتایج جستجو برای: contrast improvement

تعداد نتایج: 692741  

Journal: :journal of medical signals and sensors 0
leila salehi reza azmi

breast cancer continues to be a significant public health problem in the world. early detection is the key for improving breast cancer prognosis. in this way, magnetic resonance imaging (mri) is emerging as a powerful tool for the detection of breast cancer. breast mri presently has two major challenges. first, its specificity is relatively poor, and it detects many false positives (fps). secon...

Journal: :American journal of ophthalmology 2011
Yanny Y Y Cheng Tom J T P van den Berg Jan S Schouten Elisabeth Pels Robert-Jan Wijdh Hugo van Cleynenbreugel Catharina A Eggink Wilhelmina J Rijneveld Rudy M M A Nuijts

PURPOSE To compare the quality of vision (straylight and contrast sensitivity) after femtosecond laser-assisted Descemet stripping endothelial keratoplasty (FS DSEK) and penetrating keratoplasty (PK). DESIGN Prospective, randomized clinical trial. METHODS setting: Multicenter (5 ophthalmic centers in The Netherlands). study population: Eighty eyes of 80 patients with corneal endothelial dys...

Journal: :International Journal of Clinical Medicine 2015

2016
Aernout M. Beek Harald P. Kühl Olga Bondarenko Jos W. R. Twisk Mark B. M. Hofman Willem G. van Dockum Cees A. Visser Albert C. van Rossum

OBJECTIVES We evaluated whether delayed contrast-enhanced magnetic resonance imaging (DCE-MRI) using an extracellular contrast agent could predict improvement of dysfunctional but viable myocardium after acute reperfused myocardial infarction (MI). BACKGROUND The transmural extent of hyperenhancement at DCE-MRI has been related to improvement of function in reperfused MI. However, evidence is s...

Journal: :بینا 0
محمدرضا روحانی mr rohani zahedan university of medical sciences, zahedan, iranزاهدان- میدان آزادی- بلوار شهید مطهری (بلوار فرودگاه)- بیمارستان فوق تخصصی چشم پزشکی الزهرا (س) سیامک دلفزا باهر s delfaza-baher zahedan university of medical sciences, zahedan, iranزاهدان- میدان آزادی- بلوار شهید مطهری (بلوار فرودگاه)- بیمارستان فوق تخصصی چشم پزشکی الزهرا (س) حمیدرضا برخورداری یزدی hr barkhordari-yazdi zahedan university of medical sciences, zahedan, iranزاهدان- میدان آزادی- بلوار شهید مطهری (بلوار فرودگاه)- بیمارستان فوق تخصصی چشم پزشکی الزهرا (س)

purpose: to compare aspheric and spherical hydrophilic intraocular lenses (iols) in terms of contrast sensitivity and visual acuity in photopic and mesopic conditions. methods: this triple-blind randomized clinical trial was performed on 40 eyes of 40 patients at al-zahra eye center, zahedan, iran. the eyes were randomized to standard phacoemulsification procedure with spherical (adapt, b&l;) o...

Journal: :journal of research in medical sciences 0
peyman bidram farshad roghani hamid sanei allahyar golabchi mehdi mousavi alireza hajiannejad

background: contrast induced nephropathy (cin) is one of the most common complications after radiographic procedures using intravascular radiocontrast media. the aim of the current study was to assess the effect of atorvastatin on prevention of cin in patients undergoing coronary angiography. materials and methods: in a clinical trial study, 200 patients referred for angiography were randomly d...

Journal: :the archives of bone and joint surgery 0
john king orthopaedic hand and upper extremity service, massachusetts general hospital, boston, ma, usa pim van dijk orthopaedic hand and upper extremity service, massachusetts general hospital, boston, ma, usa celeste overbeek orthopaedic hand and upper extremity service, massachusetts general hospital, boston, ma, usa michiel hageman orthopaedic hand and upper extremity service, massachusetts general hospital, boston, ma, usa david ring dell medical school, university of texas, austin, tx, usa

background:patient concerns represent opportunities for improvement in orthopaedic care. thisstudy’s objectiveis to identify the nature and prevalence of unsolicited patient complaints regarding orthopaedic care ata tertiary referral hospital. the primary null hypothesis that there are no demographic factors associatedwith complaint types was tested. secondarily we determined if the overall com...

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