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November 21, 2003Magnetic Resonance in MedicineOpen Access

Quantitative assessment of carotid plaque composition using multicontrast MRI and registered histology

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Why the study?

Does multicontrast MRI with a supervised classification algorithm accurately identify plaque components in carotid endarterectomy specimens compared to histology and micro-CT?

Population

Carotid endarterectomy specimens

Comparison

Multicontrast MRI with a supervised… vs Micro-CT and matched histological slices…

Design

Preclinical, Pathologist blinded to classifier results

Key result

A multicontrast MRI classification algorithm identified carotid plaque components with sensitivities of 60.4%-97.6% and specificities of 75.0%-98.3% compared to histology and micro-CT.

Authors

SCSharon E. ClarkeRHRobert HammondJMJ. Ross Mitchell

Discussion

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Overview

Hypothesis-generating for MRI plaque classification; requires human validation before clinical translation.

Study Design

Type

Observational

Blinding

Single-blind

Structured PICO

Does multicontrast MRI with a supervised classification algorithm accurately identify plaque components in carotid endarterectomy specimens compared to histology and micro-CT?

P
Population
Ex vivo study evaluating carotid endarterectomy specimens to validate a multicontrast MRI classification technique for plaque composition.
E
Exposure
Multicontrast MRI (eight MR contrast weightings) with a supervised classification algorithm
C
Comparator
Micro-CT (for calcification) and matched histological slices manually segmented by a blinded pathologist
O
Outcome
Sensitivity and specificity of the classifier for identifying plaque components (fibrous tissue, necrosis, calcification, loose connective tissue) by pixel-by-pixel comparisonsurrogate

Multicontrast MRI combined with a supervised classification algorithm accurately identifies carotid plaque components in endarterectomy specimens, offering a framework for in vivo plaque imaging.

Cite This Study

Clarke et al. (2003) conducted an observational in Carotid atherosclerosis. Multicontrast MRI with supervised classification algorithm vs. Histology and micro-CT was evaluated on Sensitivity and specificity for identifying plaque components (fibrous tissue, necrosis, calcification, loose connective tissue). A multicontrast MRI classification algorithm identified carotid plaque components with sensitivities of 60.4%-97.6% and specificities of 75.0%-98.3% compared to histology and micro-CT.

synapsesocial.com/papers/6a21e8a89f07bfb2f8e21294https://doi.org/10.1002/mrm.10618
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