Comparison of CT and MRI, with and without Contrast Enhancement, in the Detection of Brain TumorsMagnetic resonance imaging (MRI) as a clinical investigation became available in the early 1980s. Since then this method has proven to be a valuable additional diagnostic tool in the recognition and ...
文档标签: CT with or without contrast enhancement NuclearScienceTechniques23(2012)305—3re0petectiticlyes:costencemenINGYanHAOJinhuaSONGianhuaCHENiangQIAWenliDepartmentNuclearMedicine,ShanghaiFirstPeopleHospital,ShanghaiJiaoTongUniversity,Shanghai200080,ChinabstractPurposeperformancecontrast—enhancedPEnon—enhancedPE...
Objective To compare the clinical outcomes of patients selected for mechanical thrombectomy by noncontrast computed tomography (CT) vs those selected by computed tomography perfusion (CTP) or magnetic resonance imaging (MRI) in the extended time window. Design, Setting, and Participants This multinationa...
Grating interferometry X-ray differential phase contrast imaging (GI-XDPCI) has provided enhanced imaging contrast and attracted more and more interests. Currently the low imaging efficiency and increased dose remain to be the bottlenecks in the engineering applications of GI-XDPCI. Different from the...
MRI scans have transformed how radiologists diagnose MS, and are now the primary method doctors use to diagnose the condition, to the exclusion of other techniques such as CT scans, since in MRI scans, the lesions appear quite distinctly. However, contrast MRIs aren’t necessary for an MS ...
We make this decision based on the low difficulty of the vessel segmentation task; this is in contrast with other works that employ leave-one-out cross-validation, which can use up to \(95\%\) of the data for training31,48. 3. We first accumulate all probabilities and labels across ...
Intervention Patients randomized to the high-frequency group were required to have follow-up testing with multislice contrast-enhanced CT of the thorax and abdomen and CEA at 6, 12, 18, 24, and 36 months after surgery. Patients randomized to the low-frequency group were required to have follo...
However, in some previous studies, the deleterious effect of diabetes on in-hospital and long-term mortality after MI compared to patients without diabetes was confined to women or more pronounced in women [6, 24, 31, 39]. In contrast, we found no interaction between type 2 diabetes and ...
The use of contrast-enhanced microCT (CE-CT) has been recently reported for 3D imaging of soft materials. In this study, we selected a range of commercially available microcarrier types and used a combination of microCT and CE-CT for full 3D morphological characterization of large numbers of ...
In contrast,unsupervised methods– also calledself-supervised methods– do not require any ground truth. The idea is to use thecost functionof conventional image registration (similarity measure andregularizationterm) as the loss function to train theneural network. An important milestone for the devel...