Website Search
ID 2090

CT scans

Description:
Professor Wayne Drevets explains that computed tomography (CT) can still be used clinically. As a research tool however, it does not have the requisite tissue or spatial resolution.
Transcript:
Computed tomography was one of the first methods that radiologists had to look at the body in a non-invasive way. We still use computed tomography to look at some structures in the body. It can also be used to find areas where there’s been a recent bleeding in the body. For example in the setting of someone that’s having a stroke and you don’t know if they’ve had a bleed into the brain or a clot instead, CT scanning can be an important tool in resolving that kind of medical distinction that would affect how you treat the patient. In terms of looking at brain structure, CT scanning does not have the spatial resolution and tissue contrast resolution that’s really needed for neuroscience. Tissue contrast means how well can you tell grey matter, the part of the brain where the cells are located, from white matter, the part of the brain where the fibrous connections going between cells are located, and how well can you see little structures like the amygdala or the hippocampus. MRI has terrific spatial resolution and can get almost to the spatial resolution of what you could see in a brain tissue looking at it grossly; whereas CT scanning has relatively low resolution and so you can’t see individual structures so well.
Keywords:
computed, tomography, ct, cat, scan, imaging, neuroimaging, spatial, tissue, resolution, stroke, wayne, drevets
Downloads:
Creative Commons License This work by Cold Spring Harbor Laboratory is licensed under a Creative Commons Attribution-Noncommercial-No Derivative Works 3.0 United States License.

Related content:

2089. Comparing neuroimaging techniques
Professor Wayne Drevets discusses the advantages of using different neuroimaging techniques, such as MEG and PET, to solve particular research questions.
800. Imaging Alzheimer's Disease
Neuroimaging techniques help scientists visualize Alzheimer's disease before the disease becomes debilitating.
2278. Positron Emission Tomography (PET) - Demonstration
Professor Wayne Drevets explains how positron emission tomography (PET) is used to examine biochemicals in the brain such as serotonin.
864. Imaging Technology
Images from brain scans and new microscopy techniques are offering a strikingly clear glimpse of what’s going on underneath the bumpy surface of our skulls.
873. Electroencephalogram (EEG)
Electroencephalogram (EEG) recordings measure electrical activity in the brain that is the result of electrochemical signaling between neurons.
892. Stroke Prevention and Treatment
During the past 25 years, more advances were made than ever before in our understanding of strokes and in our ability to prevent and treat them.
2088. Neuroimaging and psychiatry
Professor Wayne Drevets discusses the impact of neuroimaging on psychiatry - allowing clinicians to look at brain function or brain chemistry in patients.
1153. Functional Magnetic Resonance Imaging (fMRI)
Professor Trevor Robbins describes functional magnetic resonance imaging (fMRI) technology, which is used to take detailed images of the functioning brain.
1152. Positron Emission Tomography (PET)
Professor Trevor Robbins discusses how positron emission tomography (PET) works to provide detailed images of brain structure and chemistry.
2236. Aphasia and other language disorders - Dana review
The term aphasia refers to the disruption of a person’s ability to communicate with language. Read about aphasia and other language disorders in this Dana review article.
Cold Spring Harbor Laboratory
CSHL HomeAbout CSHLResearchEducationPublic EventsNewsstandPartner With UsGiving