Today I want to share with you all some basic ideas related to CT Brain. How can we identify what problem a patient has? As a technician, you should know what happened to the patient because wherever you work, the advising doctor may ask you what it is. You should also know because sometimes in some hospitals there is no radiologist available, so you may have to decide yourself whether contrast should be given or not. In CT Brain scan, we can detect trauma and abnormal soft tissue like tumors or abscesses. We can also identify mass effect, such as excessive bleeding or increased pressure due to excess fluid around a tumor. CT Brain is also done to detect bleeding. To define different brain problems, there are terms like hypodense and hyperdense. Hypodense means dark areas on CT Brain. Lower-grade tumors, edema, and infarcts appear hypodense. Wherever brightness is reduced, it is called hypodense because its density is less than normal brain tissue. Areas that are brighter are called hy...
https://www.youtube.com/live/pUtZam-oA1U?si=ofYHhRx9wHg0rqSc A brain CT scan identifies tumors by detecting abnormal tissue density (attenuation), mass effect (displacement of normal structures), or surrounding swelling (oedema) Bleeding, Key Imaging Labels and Features Attenuation Levels: Hypodense (Darker): Often indicates a low-grade tumor or associated oedema (swelling). low-density (hypodense) lesions. They usually grow slowly, often display poorly defined margins, and rarely show contrast enhancement or surrounding severe swelling. CT has lower soft-tissue contrast compared to MRI, making smaller or deeper low-grade tumors difficult to see. . Brain and Nervous System tumor Example Schwannoma Meningioma Pilocytic Astrocytoma Oligodendroglioma • Diffuse Astrocytoma Hyperdense (Brighter): Can suggest a highly cellular tumor, calcification, or recent haemorrhage within the mass. Meningioma Lymphoma Medullobla...