Noninvasive In Vivo Imaging
Noninvasive In Vivo Imaging - Related Videos
12:27
Noninvasive In Vivo Small Animal MRI and MRS: Basic Experimental Procedures
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Cited by 9 •
2009
This work describes basic procedures of noninvasive small animal MRI and MRS in vivo.
07:42
Non-invasive Imaging of Leukocyte Homing and Migration in vivo
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Cited by 8 •
2010
Here, we describe a non-invasive two-photon (2P) microscopy approach to study leukocyte homing in the mouse footpad. We discuss the technical aspects of our tissue imaging preparation and walk the reader through a typical experiment from initial set up to execution and data collection.
09:31
Noninvasive Blood Pressure Measurement Techniques
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2023
Source: Hamna J. Qureshi and Craig J. Goergen, Weldon School of Biomedical Engineering, Purdue University, West Lafayette, Indiana Here we will highlight the key similarities and differences of noninvasive blood pressure measurement techniques between humans and rodents and examine the engineering principles that govern blood pressure. The principles that govern current cuff technology to acquire systolic and diastolic pressures will also be discussed. Commercially available cuffs that connect...
10:50
Nanosensors to Detect Protease Activity In Vivo for Noninvasive Diagnostics
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Cited by 9 •
2018
Proteases are tightly regulated enzymes involved in fundamental biological processes, and dysregulated protease activity drives progression of complex diseases such as cancer. This method's goal is to create nanosensors that measure protease activity in vivo by producing a cleavage signal that is detectable from host urine and discriminates disease.
05:31
Noninvasive Sampling of Mucosal Lining Fluid for the Quantification of In Vivo Upper Airway Immune-mediator Levels
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Cited by 4 •
2017
This protocol describes a noninvasive technique for the sampling of undisturbed mucosal lining fluid from the upper airways. It can be used to perform the quantification of in vivo levels of protein mediators, such as cytokines and chemokines, in subjects of all ages.
FAQs
Each modality converts a different tissue-associated signal into an image. Ultrasound uses reflected sound waves, magnetic resonance imaging detects magnetic resonance responses, x-ray imaging measures tissue-related attenuation, and tracer-based imaging detects radioactive emissions. Because these signals interact with tissue differently, the resulting images can emphasize anatomical structures, physiological features, or disease-related processes.
Anatomical information shows structures and their organization, whereas physiological or functional information reflects processes occurring within the organism. This distinction affects how clinicians and researchers interpret findings: one examination may help identify structural abnormalities, while another may reveal disease activity or biological change. Together, these perspectives can provide a more informative assessment than either alone.
Signal selection determines which aspect of a disease process becomes visible. Reflected ultrasound waves, magnetic resonance responses, x-ray attenuation, and radioactive tracer emissions each provide distinct information. Choosing among them allows an investigation to focus on the relevant anatomical, physiological, or disease-related feature, supporting more targeted evaluation of progression or treatment effects.
Because imaging can assess a living organism without surgical exposure, the same subject can be examined at multiple time points. Serial observations help researchers follow disease progression and compare findings before and after therapy. This time-based view can show change within an individual, while reducing reliance on repeated invasive tissue sampling.
In clinical medicine, these methods contribute to diagnosis, treatment planning, disease monitoring, and evaluation of therapeutic responses. The appropriate modality can provide anatomical or functional information relevant to a patient’s condition. Imaging therefore supports decisions across different stages of care, from identifying a problem to assessing whether treatment is producing the expected change.
Researchers can use noninvasive in vivo imaging to examine how disease develops, how biological processes change, and how an intervention affects those changes. Repeated visualization provides longitudinal information from living organisms rather than relying only on isolated tissue samples. This makes the approach useful for connecting disease progression with observed treatment responses over time.