Intravenous pyelogram (IVP):Another test that can be performed, the IVP, is also a type of X-ray evaluation of the urinary tract. In this procedure, a dye is injected into the veins, and this is filtered by the urinary tract. A series ofX-raysare then taken over 30 minutes to look ...
Cerebral amyloid angiopathy (CAA) is one of the cerebral small vessel diseases (SVD) characterized by the progressive deposition of amyloid β (Aβ), in the walls of small to medium-sized arteries and capillaries in the cerebral cortex and overlying leptomeninges [1,2,3,4,5]. Regarding the...
which would otherwise be compromised by smearing of the bright-blood lumen signal. Two-dimensional (2D) T2-weighted (T2w) spin-echo sequences have inherent blood suppression due to outflow effects at long echo times; however, this mechanism is not compatible with short echo times needed for T...
Image resolution, which drives lesion detection, is determined by the size of the imaging detector elements, which is on the order of 3 mm in clinical PET systems [14]. The resulting imaging resolution is somewhat lower due to detrimental effects from positron range effects, which vary depend...
In these cases, MRI might be helpful to distinguish between a progressive brain tumour and radiation injury. Less common is the pseudo-response, which occurs with specific treatment affecting the pathological vessels of the tumour. In pseudo-response the contrast enhancement decreases in the tumour ...
For DSC-MRI, the degree of signal loss observed is dependent on the vascular concentration of the contrast agent and tumour perfusion; the most common used parameters are relative cerebral blood volume (BV), relative cerebral blood flow (BF) (Pope et al, 2011). The data from DCE-CT ...
1.5%). This binding increases the T1 relaxivity of Gd-EOB DTPA and resultant signal enhancement in blood and liver compared to Gd-DTPA. It has been reported that the T1 relaxivity of Gd-EOB-DTPA in water, rat blood and rat liver at 20 MHz and 39 °C is 5.3 L/mmol s, 11.2 L/mmol...
This test provides some of the strongest evidence of carpal tunnel syndrome. It measures how fast an electrical signal can travel along a nerve or from the nerve to a muscle. The doctor places a small electrode on your skin near your elbow. It sends a mild electrical current down your medi...
This review will focus on what has been learned in the past decade of imaging GM pathology in MS. As will be shown, visualization of GM demyelination was difficult at first, but improved upon technical developments in the field. An important question that now remains is whether MRI visualizatio...
in the schematics, typically includes X-ray imaging, Computed Tomography (CT) imaging or Ultrasound (US) or Magnetic Resonance Imaging (MRI), and, thus, yields anatomical information, which can be employed to detect, localize and describe cancerous tissue in-vivo. However, cancer is frequently ...