photon emission造句
例句與造句
- Nuclear medicine instrumentation - routine tests - part 2 : scintillation cameras and single photon emission computed tomography imaging
核醫(yī)學儀器裝置.常規(guī)試驗.第2部分:閃爍攝影機和單光子輻射計算機斷層攝影成像 - Radionuclide imaging devices - characteristics and test conditions - part 2 : single photon emission tomographs iec 61675 - 2 : 1998 ; german version en 61675 - 2 : 1998
放射性核素成像裝置.性能和試驗條件.第2部分:單光子 - Evaluation and differentiation of early parkinson disease and essential tremor by 99tcm - trodat - 1 single photon emission computerized tomography
1單光子發(fā)射計算機斷層腦顯像對早期帕金森病與原發(fā)性震顫的評估與鑒別 - Assessment of left ventricular function : a comparison of cardiac magnetic resonance imaging and electrocardiogram - gated single - photon emission computed tomography
心肌磁共振顯像與核素心肌灌注顯像測定左心功能的對比研究 - Effects of isoflurane on the distribution of whole and regional cerebral blood flow in healthy human evaluated by single photon emission compute - aided tomography
應用單光子發(fā)射式計算機斷層成像評估異氟醚對健康人全腦及局部腦血流量分布的影響 - It's difficult to find photon emission in a sentence. 用photon emission造句挺難的
- Observation of perfusion of cerebral blood flow and metabolism of brain cells in transient ischemic attack patients with single photon emission computerized tomography
單光子發(fā)射計算機斷層掃描符合線路顯像觀察短暫性腦缺血發(fā)作間期患者腦血流灌注及腦細胞代謝狀態(tài) - Quality control of nuclear medicine instruments - part 2 : constancy testing of single crystal gamma - camers used in planar scintigraphy and in anger type gamma cameras with rotating detector heads used in single photon emission tomography
核醫(yī)療儀器的質(zhì)量控制.第2部分:用于單光子x線斷層術 - Abnormal position of the heart within the thoracic cavity may potentially cause cardiac single - photon emission computed tomography ( spect ) perfusion artifacts , and only few such cases have been reported
摘要胸腔內(nèi)心臟位于不正常位置可能導致心臟單光子射出計算機斷層造影偽像，且這種病例僅有少數(shù)曾被報告過。 - Functional neuroimaging technologies like single photon emission computerized tomography , or spect , and positron emission tomography , or pet , now enable scientists to monitor changes in brain activity
如今，諸如單光子發(fā)射計算機掃描斷層成像( spect )及正電子發(fā)射型斷層成像( pet )等功能性大腦成像技術使科學家能夠監(jiān)測大腦活動的變化。 - Zhou of the uniersity of pennsylania , philadelphia , and colleagues reiewed noninasie imaging modalities to track implanted cells , including magnetic resonance imaging ( mri ) , positron emission tomography ( pet ) , single - photon emission computed tomography ( spect ) , and optical imaging using luminescence and fluorescence
這包括磁共振影像學（ mri ） ，正電子發(fā)射斷層掃描術（ pet ） ，單光子發(fā)射計算體層攝影術（ spect ）和使用發(fā)光和熒光的光學成像術。 - The results showed that : the ultraweak photon emission counts of each grain during grain - filling period appeared a curve with single apex , the count was maximum when the grain was completely filled in and the color of grain was from green to yellow ; the intensity of ube showed a downward trend ; it is possible to select good varieties of rice with stronger grain - filling ability if this technique is used , but more experiments is needed
實驗結果表明：在整個灌漿過程中單粒發(fā)光量呈單峰曲線，在籽粒全部充實并且顏色由青轉(zhuǎn)黃時，發(fā)光量最大；發(fā)光強度呈遞減趨勢；運用該技術有可能進行水稻不同品種間的比較和品種灌漿力強弱的篩選。 - The object of single photon emission computed tomography ( spect ) is to reconstruct an unknown radioactivity distribution inside the body from projection data consisting of the number of photon collected on a collimated gamma camera . these projections are not simple line integrals but have point - spreads due to the imperfect collimator of the detector and attenuation due to the compton scattering . so
這種投影數(shù)據(jù)與透射ct中的數(shù)據(jù)不同，由于存在著光子的點擴散(由準直器引起)和衰減(由散射引起) ，已經(jīng)不能用簡單的線積分來描述這個問題，因此相對于透射ct而言，這個領域?qū)⒚媾R很多困難。 - By calculating the feynman diagram in rtf , we find that when taking into account both the thermal photon emission , absorption and the virtual photon exchange processes , the infrared divergences at zero and finite temperature can be cancelled at the same time . the full quantum calculation results for soft photon radiation coincide completely with the poisson distribution obtained in the semiclassical approximation ( the coupling of the classical current and quantized field )
通過實時溫度場論下的費曼圖計算，我們得到：將實光子的發(fā)射、吸收，虛光子的交換過程同時考慮時，零溫場論中出現(xiàn)的和由溫度效應引起的紅外發(fā)散都能得到消除；并且完全量子場論下的軟光子輻射幾率與半經(jīng)典近似下（經(jīng)典的電流和量子化的電磁場之間的耦合）得到的泊松分布結果完全一致。
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