强迫障碍是指以反复出现强迫观念为基本特征的一类神经症性障碍，强迫观念是以刻板形式反复进人患者意识领域的思想、表象或意识。这些思想、表象或意向对患者来说，是没有现实意义的，不必要的或多余的；患者意识到这些都是他自己的思想，很想摆脱但又无能为力，因而感到十分苦恼。 根据上述定义，下列属于“强迫...
The radiofrequency (RF) field used in magnetic resonance imaging (MRI) procedures may lead to significant increase in temperature and local specific absorption rate (SAR) for patients with implanted pacemaker (PM). In this paper two numerical models were developed to reproduce the heat generation ...
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MRI扫描过程中,重点关注问题之一是SAR,SAR英文全称是( ) A. Specific Absorption Rate B. Specific Absorption Ratio C. Signal Attenuation Rate D. Signal Attenuation Ratio 查看完整题目与答案 如果采用流行病学调查方法来确证一种新化学物是否为致癌物,一般需要人类接触该受试物()年后才能进行。 A. ...
Nipple discharge is normal in some cases, such as if someone has recently stopped breastfeeding or if they have galactorrhea. Abnormal nipple discharge may be the result of conditions like intraductal papilloma or duct ectasia. It's important to be aware of the different types of nipple discharg...
(SAR) management are the cornerstones of the risk mitigation strategies when scanning device patients.2 Two relatively recent position statements have been promulgated in Europe and North America guiding the clinician about the risk and conduct of MRI in device patients.3,4 And while risks are ...
1.1.4 The “deep” in “deep learning” Gxux iangreln zj s cipicfes ibuedslf le hmcanie lnargeni: s wvn xsor en rgainnle issprnreaeontet klmt urss rdcr rypc nz pishemsa vn geannlir eseisvuscc slraye le ecyiasnirgnl enngmuilaf ptereonetanrsis. Aqx “xhoq” jn “ deep ...
1. Introduction: The Need to Protect Curcumin in the Body First isolated in 1815 by Vogel and Pelletier, curcumin’s chemical structure was determined by Lampe e Milobedeska in 1913. It is a diferuloylmethane polyphenol characterized by two phenolic rings (as with resveratrol), an active ...
The etiology of ischemic stroke is multifactorial. Although receiving less emphasis, genetic causes make a significant contribution to ischemic stroke genesis, especially in early-onset stroke. Several stroke classification systems based on genetic information corresponding to various stroke phenotypes were pr...
John Woodard and his colleagues performed five tests on 78 healthy elders: a structural MRI (sMRI) that measures the size of the hippocampal region of the brain; a functional MRI (fMRI) that shows how the brain is activated during mental tasks; a blood test that identifies the APOE e4 al...