GEON
发表于 2025-3-30 08:48:20
Basic Properties of Ultrasound Contrast Agents,currently available ultrasound contrast agents (UCAs). Today CEUS easily allows real-time recording and evaluation of the wash-in and wash-out phases of the UCA over several minutes. The main diagnostic features are vascular architecture (evaluated in the early wash-in phase) and contrast enhancemen
残废的火焰
发表于 2025-3-30 13:14:38
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Evocative
发表于 2025-3-30 20:33:58
Contrast-Enhanced CT Scanning of the Liver and Pancreas,led dynamic CT, is required for the diagnosis of hepatic and pancreatic tumors. The purpose of dynamic CT is to enhance the contrast between a lesion and the surrounding tissues in order to detect a lesion confidently. It is important to understand which phases are needed to detect the type of lesio
WAIL
发表于 2025-3-30 22:36:43
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名词
发表于 2025-3-31 04:27:26
CT and MR Enterography and Enteroclysis,mentally developed for small bowel imaging. Enterography examinations are based on cross-sectional imaging after ingestion of oral contrast agents, whereas oral contrast agents are administered via nasojejunal intubation in enteroclysis examinations. These methods exhibit the advantages of both smal
废止
发表于 2025-3-31 07:19:31
CT and MR Angiography in the Chest and Abdomen,CTA has advantages such as demonstration of the vessel wall, perivascular tissue, and end-organ parenchyma in addition to luminal assessment with short scan times. The main advantage of MRA is not exposing the patient to ionizing radiation that enables repeated acquisitions, especially in children.
agenda
发表于 2025-3-31 10:53:40
Contrast-Enhanced CT and MR Scanning of the Brain,-sectional studies in the 1970s for computed tomography (CT) and in the 1980s for magnetic resonance imaging (MRI)..CAs were used since the early days of CT for brain imaging. Iodine-based CAs can be grouped by osmolarity, ionicity, and the number of benzene rings (Beckett et al., Radiographics 35(6
Frequency
发表于 2025-3-31 14:06:36
Perfusion CT and MR Imaging of the Brain,naging acute ischemia. Perfusion MRI with different methods has been widely used in a larger area for diagnosis, characterization, treatment planning, interventional guiding, and also treatment monitoring procedures of brain lesions. In recent years, perfusion imaging techniques have come to the for
CAMEO
发表于 2025-3-31 18:28:22
CT and MR Angiography of the Brain and Carotid Arteries,iological contrast agents (CAs). CT technology has improved tremendously in recent years, even CT angiography (CTA) has substantially replaced digital subtraction angiography (DSA) (Orrison et al., Clin Radiol 66(6):566–74, 2011). Because CT technology improved, the use of CT intravenous (iv) CA inj
遗传学
发表于 2025-3-31 23:57:59
Peripheral Contrast-Enhanced CT and MR Angiography,es their advantages and disadvantages in evaluating peripheral arterial occlusive disease (PAOD). CT angiography is excellent in the detection of calcification and useful for evaluating the properties of the arterial walls however blooming artifacts can significantly decrease diagnostic accuracy, es