Imaging Modalities
Imaging Modalities - Related Videos
13:51
Cross-Modal Multivariate Pattern Analysis
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Cited by 5 •
2011
Classical multivariate pattern analysis predicts sensory stimuli a subject perceives from neural activity in the corresponding cortices (e.g. visual stimuli from activity in visual cortex). Here, we apply pattern analysis cross-modally and show that sound- and touch-implying visual stimuli can be predicted from activity in auditory and somatosensory cortices, respectively.
07:13
Multimodal Cross-Device and Marker-Free Co-Registration of Preclinical Imaging Modalities
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Cited by 1 •
2023
The combination of multiple imaging modalities is often necessary to gain a comprehensive understanding of pathophysiology. This approach utilizes phantoms to generate a differential transformation between the coordinate systems of two modalities, which is then applied for co-registration. This method eliminates the need for fiducials in production scans.
12:23
Multi-modal Imaging of Angiogenesis in a Nude Rat Model of Breast Cancer Bone Metastasis Using Magnetic Resonance Imaging, Volumetric Computed Tomography and Ultrasound
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Cited by 16 •
2012
In the pathogenesis of bone metastasis, angiogenesis is a crucial process and therefore represents a target for imaging and therapy. Here, we present a rat model of site-specific breast cancer bone metastasis and describe strategies to non-invasively image angiogenesis in vivo using magnetic resonance imaging, volumetric computed tomography and ultrasound.
01:15
Sensory Modalities
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2024
Sensation typically is the process by which the sensory receptors and sense organs detect stimuli from the internal and external environment and transmit this information to the central nervous system for processing. General senses refer to the broad category of sensory information detected by receptors in the body and can be further grouped into somatic and visceral senses. Somatic sensations include touch, pressure, temperature, and pain and are essential for navigating our environment and...
10:09
Transferring Cognitive Tasks Between Brain Imaging Modalities: Implications for Task Design and Results Interpretation in fMRI Studies
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Cited by 3 •
2014
Transferring a paradigm with a history of use in EEG experiments to an fMRI experiment is considered. It is demonstrated that manipulating the task demands in the visual oddball task resulted in different patterns of BOLD activation and illustrated how task design is crucial in fMRI experiments.
FAQs
Selection begins with the diagnostic question, then considers tissue contrast, spatial resolution, speed, cost, and exposure. These factors can point toward different choices for different patients or clinical tasks. A modality that is strong in one characteristic may not be optimal overall, so clinicians balance technical performance with the patient’s specific needs.
Contrast arises from how tissues interact with the energy or signals used by a modality. Radiography and computed tomography depend on X-ray attenuation, magnetic resonance imaging on magnetic responses, ultrasound on reflected sound waves, and nuclear medicine on radionuclide emissions. The underlying signal therefore influences which tissue differences become visible.
Spatial resolution is only one determinant of clinical usefulness. Tissue contrast can affect whether a finding is distinguishable, while speed may matter for practical imaging workflows. Cost and exposure considerations also influence suitability. Evaluating these characteristics together helps clinicians choose an approach that fits the diagnostic question rather than selecting solely for the sharpest image.
Comparing complementary images can improve disease detection because different modalities emphasize different tissue interactions and therefore different visual information. This strategy also supports treatment planning and monitoring over time. Its value lies in combining strengths rather than assuming that one technique can provide every clinically relevant view of a condition.
Imaging can guide minimally invasive procedures by providing clinically relevant representations of internal anatomy or physiology during planning and application. Using complementary images may strengthen disease detection and clarify information needed for the intervention. The selected modality depends on the diagnostic or procedural question, along with resolution, contrast, speed, cost, and exposure considerations.
During monitoring, clinicians can use imaging to track treatment response through changes in the representations produced by the selected modality. The most informative approach depends on the needed tissue contrast, spatial resolution, speed, cost, and exposure profile. Comparing appropriate images over the course of care can help assess whether disease-related findings change after treatment.