作者: 物種起源 時(shí)間: 2025-3-21 23:42
https://doi.org/10.1007/978-3-031-04360-4ional accumulation of administered radioactive materials. Although images reflect anatomical constraints, the discipline is complementary to other imaging modalities, which are essentially morphological.作者: 摻假 時(shí)間: 2025-3-22 00:43 作者: 自負(fù)的人 時(shí)間: 2025-3-22 07:25 作者: FEMUR 時(shí)間: 2025-3-22 11:12
https://doi.org/10.1007/978-3-031-04360-4s a benefit to the patient, there is also a risk to both the patient and the community as a whole. Recommendations on controlling this risk are made by a number of organisations, based on an evaluation of the detriment to the individual caused by the absorbed radiation dose. Of prime importance, in 作者: Infect 時(shí)間: 2025-3-22 16:02 作者: Infect 時(shí)間: 2025-3-22 20:55
Herbert C. Kelman,Ronald J. Fisherk et al. 1994). The level of this risk can be appreciated by comparison with other investigations and risks and it can be controlled, most directly, by limiting the administration activity. This must not be so severe as to reduce the efficacy of the investigation, however. Of particular concern are 作者: 恫嚇 時(shí)間: 2025-3-22 22:45 作者: 畫(huà)布 時(shí)間: 2025-3-23 01:24 作者: 主動(dòng)脈 時(shí)間: 2025-3-23 06:53
https://doi.org/10.1007/978-3-663-02567-2hanges in morphology. Such an image can be formed by moving a detector across the body and mapping the variations in emitted photon intensity, using a rectilinear scanner. However, these types of investigation are very time consuming because of the inefficient use of the emitted radiation; whilst in作者: 效果 時(shí)間: 2025-3-23 11:16 作者: 轉(zhuǎn)折點(diǎn) 時(shí)間: 2025-3-23 14:36 作者: Gustatory 時(shí)間: 2025-3-23 20:52 作者: 止痛藥 時(shí)間: 2025-3-24 02:09
,The Artist’s Life: Truth and Legend,alues of physiological parameters. The probe studies can assess the in vivo distribution of radionuclides, that would be difficult to image. Both require only small administration activities, except in the case of intraoperative probes. Additionally, a type of external probe investigation which requ作者: Outshine 時(shí)間: 2025-3-24 04:10
https://doi.org/10.1007/978-1-4613-2481-2adionuclide provides much more information than can be provided by in vitro or probe investigation. It cannot easily, however, provide the absolute values of the physiological parameters that in vitro investigation can and it is not as sensitive to high energy γ photons as probe investigations. It i作者: 悶熱 時(shí)間: 2025-3-24 10:31
A Critical View of the Urban Crisisesions, particularly those which are deep lying and which exhibit reduced radionuclide accumulation. The reconstructed data can also be reoriented into, for example, coronal or sagittal sections, for better visualisation of the relative positions of activity distributions, which may help to localise作者: negotiable 時(shí)間: 2025-3-24 14:32 作者: 傻瓜 時(shí)間: 2025-3-24 15:14 作者: Factorable 時(shí)間: 2025-3-24 21:52 作者: 委屈 時(shí)間: 2025-3-25 02:04
http://image.papertrans.cn/d/image/270699.jpg作者: 磨坊 時(shí)間: 2025-3-25 06:20 作者: arterioles 時(shí)間: 2025-3-25 11:17 作者: 轎車(chē) 時(shí)間: 2025-3-25 14:05
Introductionional accumulation of administered radioactive materials. Although images reflect anatomical constraints, the discipline is complementary to other imaging modalities, which are essentially morphological.作者: Creditee 時(shí)間: 2025-3-25 17:58 作者: 古文字學(xué) 時(shí)間: 2025-3-25 21:35 作者: 認(rèn)識(shí) 時(shí)間: 2025-3-26 00:42 作者: 喊叫 時(shí)間: 2025-3-26 07:47
Image Presentationdigital printers of various kinds and much interpretation is being undertaken directly from the display. This requires the digital data to be translated into colour or monochrome representation and this must be chosen carefully, particular translations suiting certain data and others degrading the representation.作者: deactivate 時(shí)間: 2025-3-26 12:09
Non-Imaging Studies retained in the whole body. Non-imaging studies are the simplest investigations to undertake. This simplicity, however, should not obscure the need for accuracy at every part of the process. Since the result is a number rather than an image, the potential for post-investigation quality assessment is very limited.作者: 厭倦嗎你 時(shí)間: 2025-3-26 14:43
tic nuclear medicineIn the development of many medical technologies the beginning is characterised by an emphasis on the basic scientific principles of the technology and the optimisa- tion of the functional aspects of the technology. As a technology matures there is a tendency for the underlying pr作者: 過(guò)份 時(shí)間: 2025-3-26 18:34 作者: 性滿(mǎn)足 時(shí)間: 2025-3-27 00:21
Book 2004 the optimisa- tion of the functional aspects of the technology. As a technology matures there is a tendency for the underlying principles to be forgotten as the dinical applications begin to develop and the focus moves to an understanding of the dinical applica- tion. This maturity brings with it n作者: monochromatic 時(shí)間: 2025-3-27 04:22 作者: Concomitant 時(shí)間: 2025-3-27 05:17 作者: 含沙射影 時(shí)間: 2025-3-27 12:18 作者: 不遵守 時(shí)間: 2025-3-27 17:07
https://doi.org/10.1007/978-3-031-04360-4atient and the public, is for practitioners to maintain an up to date knowledge of the radiation risks associated with the procedures, an understanding of the methodology used to assess these risks and an appreciation of the associated limitations (Mountford 1997).作者: 冬眠 時(shí)間: 2025-3-27 18:07
https://doi.org/10.1007/978-3-319-39032-1edicine departments are at risk from both sources and patients who have been administered. The rest of the community can be protected from physical sources but they remain at risk from the radioactive patient.作者: ingenue 時(shí)間: 2025-3-28 01:40 作者: resilience 時(shí)間: 2025-3-28 03:06 作者: 系列 時(shí)間: 2025-3-28 09:46
Protection of the Communityedicine departments are at risk from both sources and patients who have been administered. The rest of the community can be protected from physical sources but they remain at risk from the radioactive patient.作者: 休戰(zhàn) 時(shí)間: 2025-3-28 11:21 作者: 把…比做 時(shí)間: 2025-3-28 18:22
Book 2004 a scarce commodity. Nudear medicine is no exception to this development cyde. As a medical special- ty the discipline has matured. The basic imaging technology has become more reli- able in everyday use requiring less input from scientific staff. Clinical procedures have become protocols which are 作者: HEPA-filter 時(shí)間: 2025-3-28 22:04 作者: definition 時(shí)間: 2025-3-28 23:40 作者: Respond 時(shí)間: 2025-3-29 03:39
https://doi.org/10.1007/978-3-663-02567-2 external measurements with probe systems, based on scintillation or semiconductor crystals. The safe use of radionuclides demands conscientious monitoring of the environment and staff, which is undertaken using a variety of detectors.作者: ESO 時(shí)間: 2025-3-29 10:00 作者: EVICT 時(shí)間: 2025-3-29 12:56 作者: hermetic 時(shí)間: 2025-3-29 18:00 作者: 聾子 時(shí)間: 2025-3-29 20:19 作者: 逗留 時(shí)間: 2025-3-30 01:34
Radiopharmaceuticalshe parent — daughter radionuclide technique, which is utilised in the form of radionuclide generators. These allow the use of short half-life radionuclides, remote from the production facilities. Many radiopharmaceuticals are administered intravenously. Their handling, therefore, requires particular作者: 獨(dú)行者 時(shí)間: 2025-3-30 07:21 作者: 四指套 時(shí)間: 2025-3-30 12:09
Non-Imaging external measurements with probe systems, based on scintillation or semiconductor crystals. The safe use of radionuclides demands conscientious monitoring of the environment and staff, which is undertaken using a variety of detectors.作者: Keshan-disease 時(shí)間: 2025-3-30 15:31 作者: amplitude 時(shí)間: 2025-3-30 20:25
Dual Photon Imagingome using a coincidence y camera, which can operate as both a single photon and a coincidence system (Budinger 1998). These may be the most innovative devices introduced in nuclear medicine during the last few years but are complements to, rather than competitors of, dedicated systems (Kunze et al. 作者: BATE 時(shí)間: 2025-3-30 22:58
Single Photon Planar Imagingn is proportional to the size and contrast of the lesion and inversely proportional to system spatial resolution and statistical noise in the image (Mullani 2000). One of the great advantages of imaging is to be able to follow variations in the activity distribution over time.作者: opalescence 時(shí)間: 2025-3-31 01:34
Single Photon Tomographic Imagingware for single photon tomographic imaging was introduced in the mid 1980s, a range of imaging protocols are in use and are sometimes inappropriate, which demonstrates the on-going need to encourage the correct use of the instrumentation (Heikkinen et al. 1999). The image data is heavily and sophist作者: 蔓藤圖飾 時(shí)間: 2025-3-31 05:44
Introductionional accumulation of administered radioactive materials. Although images reflect anatomical constraints, the discipline is complementary to other imaging modalities, which are essentially morphological.作者: Spirometry 時(shí)間: 2025-3-31 11:04
Radioactivityg optimal for detection (NCRP 1983). An indication whether unwanted and hazardous particulate radiation (e., β., Auger e.), low energy photon radiation (characteristic x), or the precursor of photon radiation (β.) will also be produced, can be obtained by consideration of the decay mechanism of the 作者: 性滿(mǎn)足 時(shí)間: 2025-3-31 15:38
Radiopharmaceuticalsctive element in the body, such as iodine. Many, however, need to be combined with a body fluid sample or pharmaceutical in order to accumulate in the required target tissue. The latter is a radiopharmaceutical; a medicinal product, which contains a radionuclide as an integral part of the main ingre作者: 商業(yè)上 時(shí)間: 2025-3-31 19:55
