Part 1contains two 20page atlases, one of normal anatomy as displayedby MRI and CT, and another of brain (actually intracranial) pathology.The former contains a sufficient number of typos: mammilary body,thalmus (both repeated), tuberculum sella, gyrusrecti to confuse the unwary, plus terms ...
Skeletal system problems:Sometimes, regular x-rays don’t give doctors enough of a picture of the bones. CT scans are better for seeing complex fractures, spinal cord injuries, osteoporosis damage and bone tumors. Head conditions:Hemorrhaging, brain calcification, tumors and blood flow problems to...
A Nature Inspired Algorithm for Enhancement of Fused MRI and CT Brain Images There is a need for an enhancement technique capable of improving contrast, structural information, entropy, peak signal to noise ratio. Contrast Limited Adaptive Histogram Equalization (CLAHE) is a widely used enhancement ...
腦部1腦部的正常ct及mri解剖腦部解剖構造brain parenchyma腦實質 cerebrum : frontal lobe, temporal lobe, parietal lobe, occipital lobe cerebe
In this study, we propose an enhanced DDPM framework with the joint probability for synthesizing brain MRI from brain PET/CT. Although PET/MRI scans provide high-resolution structural information for partial evaluation and image reconstruction, it is costly and time-consuming compared to PET/CT. ...
磁共振成像(MRI)是利用原子核在磁场内所产生的信号经重建成像的一种技术。人体内的氢质子分布最广,含量最高。每一个氢质子可被视为一个小磁体,正常情况下,这些小磁体自旋轴的分布和排列是杂乱无章的,若人体置于一个强大的外磁场内时,这些小磁体的自旋轴将按磁场的方向重新有规律地排列,此时施加一个能够影响磁场...
该回顾性单中心研究纳入了2009年2月至2016年3月诊断为临床IA期NSCLC并接受根治性手术的患者,总共628例,其中331例(53%)接受了术前头颅MRI,3例(<1%)接受头颅CT,其余未接受头颅影像学检查(图1)。相比于未接受头颅MRI患者,接受头颅MRI者年龄更大(64岁 vs 62岁),有更高比例的吸烟史(49% vs 40%),更低比例的...
As a key oscillatory activity in the brain, thalamic spindle activities are long believed to support memory consolidation. However, their propagation characteristics and causal actions at systems level remain unclear. Using functional MRI (fMRI) and electrophysiology recordings in male rats, we found th...
(lacune of presumed vascular origin,LPVO)、可能血管源性脑白质高信号(white matter hyperintensity of presumed vascular origin, WMH)、血管周围间隙(perivascular space, PVS)、脑微出血(cerebral microbleed,CMB)、皮层表面铁沉积(cortical superficial siderosis,cSS)、脑萎缩(brain atrophy,BA)和皮层微梗死(...
综上:1、与冠状位CT成像相比,斜冠状位MRI成像更符合视神经走行和眼眶解剖,能更好地显示眼外肌,因此结合 21 mm 处的眼外肌指数 mMI 和视神经平均 T2 值的 MRI 参数可以成为识别 DON 的有效成像标记。 2、通过眶尖眼外肌体积指数AMI和球后3mm处视神经的SIR对眼眶眶尖拥挤的量化和视神经本身病变的确定进一步...