由于肝动脉、门静脉双重血供的结构特点,肝脏是大多数恶性肿瘤转移最常见的实质器官之一[1]。肝转移是肺癌患者预后差的重要原因,约有 20% 的非小细胞肺癌(non-small cell lung cancer,NSCLC)患者会发生肝转移[2]。肝转移瘤通常表现为多灶性病变...
[18] Tu C, Shen H, Liu R, et al. Myocardial extracellular volume derived from contrast-enhanced chest computed tomography for longitudinal evaluation of cardiotoxicity in patients with breast cancer treated with anthracyclines[J]. Insights...
There are several factors that lead to CT use over X-ray, MRI or similar procedures. MRI and CT both produce cross-sectional images of the body, but the CT scan works better for cancer detection, lung imaging, chest imaging, bone injuries and anything else involving bone. CT scanning is ...
suited for you. Dependant on that, you may be given an oral or intravenous contrast agent. In many cases you will be given both. For the safety of the patient there is a careful screening process for all contrast studies. Please see our section on how to prepare for your CT scan. ...
由于肝动脉、门静脉双重血供的结构特点,肝脏是大多数恶性肿瘤转移最常见的实质器官之一[1]。肝转移是肺癌患者预后差的重要原因,约有 20% 的非小细胞肺癌(non-small cell lung cancer,NSCLC)患者会发生肝转移[2]。肝转移瘤通常表现为多灶性病变,但也可表现为单个病灶、融合性病灶或全肝弥漫性病灶[3]。
Scan length:355 mm Rotation time:0.25 s Tube setting:80/Sn 150 kV, 115/70 mAs CTDIvol:7.78 mGy DLP:298.7 mGy*cm Eff. dose:4.18 mSv Fast Dual Source Dual Energy technology helped visualize the degree of perfusion defects after resection of the left lung to treat suspicious lesion ...
This paper presents a novel semi-automatic method for lung segmentation in thoracic CT datasets. The fully three-dimensional algorithm is based on a level set representation of an active surface and integrates texture features to improve its robustness. The method’s performance is enhanced by the ...
Image formatsup to 8000x8000x2300 pix after a single scan Spatial resolution60nm smallest pixel size, <500nm low-contrast resolution (10%MTF) Positioning accuracy<50nm for rotation, anti-vibration granite platform with pneumatic leveling Maximum object size300mm in diameter (140mm scanning size),...
Table 1 Mobile cone-beam CT scan parameters 参数名称 数据 X射线源焦点到探测器(晶体)表面 X射线能量 800 mm 70,90,110 kV 探测器尺寸 CT孔径 420 mm × 285 mm 420 mm 成像方面的功能,提高了其简便性和可靠性. 1.3 模型构建 ...
3、ronchiectasis and measure local lung function by contrast inhalation CT.MethodsThere were 17 cases of patients with branchiectasis by clinical suspicious diagnosis.Plain CT scan and enhancement CT scan with ultrasound atomizing inhalation had been done successively.Comparing the finding ability of l...