نتایج جستجو برای: primary resonance
تعداد نتایج: 845231 فیلتر نتایج به سال:
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...
dermatofibrosarcoma protuberans is an uncommon malignant mesenchymal tumor of the dermis, which most commonly appears on the body and extremities. a preoperative diagnosis of dermatofibrosarcoma protuberans is extremely difficult, because it is a very rare entity and its appearance is often similar to that of benign breast lesion. here, we presented a case of breast dermatofibrosarcoma protuber...
endoscopic retrograde cholangiopancreatography (ercp) is a specific technique used to study the pancreatobiliary system that is performed in hepatogastroenterology centers. recent, common uses for therapeutic ercp are largely due to advanced imaging techniques such as magnetic resonance cholangiopancreatography and endosonography. in the united states alone, over 500,000 therapeutic ercp are pe...
introduction septic cavernous sinus thrombosis (cst) is a rare condition that can result in high mortality and morbidity rates if not treated immediately. cst may be aseptic or septic. less common primary sites of infection include the tonsils, soft palate, middle ear, and orbit. reported cases of middle ear infection are very rare, and response to treatment is poor. conclusions findings of lab...
non typhoidal salmonellae spp. causes clinical symptoms especially in neonates, infants, aged and immunocompromised patients. hematogenous dissemination may occur in complicated cases whereas the formation of abscess is rare. a 61-year old woman presented to our hospital with pain and a mass in her left arm, without fever and leukocytosis. she was using methotrexate, corticosteroids and quinine...
We investigated the normal mode composition and the aqueous solvation dependence of the primary amide vibrations of propanamide. Infrared, normal Raman, and UV resonance Raman (UVRR) spectroscopy were applied in conjunction with density functional theory (DFT) to assign the vibrations of crystalline propanamide. We examined the aqueous solvation dependence of the primary amide UVRR bands by mea...
INTRODUCTION Primary angiitis of the central nervous system is a rare disease of unclear etiology. There is no single test diagnostic of primary angiitis of the central nervous system. We report an unusual pattern on brain magnetic resonance imaging that might be specific for primary angiitis of the central nervous system. CASE PRESENTATION A 47-year-old Caucasian man developed progressive bi...
results when the two ms groups were compared together, we found that cr was significantly increased (p value=0.008) and naa/cr was significantly decreased (p value=0.03) in non-enhancing lesions in ppms compared with rrms. there was no significant difference in naa, cho or naa/cho between the two ms subtypes. conclusion mrs is a potential way to differentiate ppms and rrms. objectives we compar...
Nowadays, atomic-force microscopy plays a significant role in nanoscience and nanotechnology, and is widely used for direct measurement at atomic scale and scanning the sample surfaces. In tapping mode, the microcantilever of atomic-force microscope is excited at resonance frequency. Therefore, it is important to study its resonance. Moreover, atomic-force microscopes can be operated in fluid e...
background hepatic fibrosis is a typical complication of chronic liver diseases resulting in cirrhosis that remains a major public health problem worldwide. liver biopsy is currently the gold standard for diagnosing and staging hepatic fibrosis. percutaneous liver biopsy; however, is an invasive procedure with risks of complications. therefore, there is need for alternative non-invasive techniq...
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