search

vital-ultrasound / ai-echocardiography-for-low-resource-countries

AI-assisted echocardiography for low-resource countries
1 stars 1 forks source link

Towards AI-Guided Ultrasound? #13

Closed mxochicale closed 2 years ago

mxochicale commented 2 years ago

Motivation

The challenge of guide sonographers to acquired the right cardiac views has been addressed with AI-guided tools where CNN were trained (1) to estimate quality of image and probe position and orientation (6-dimension), (2) corrective probe manipulation and (3) acquire and diagnose any pathology (Narang et al. 2021). However, there is little research on how such AI-guided US work in real scenarios such as the ICU where a more challenging scenarios are presented.

drawing-v00

eFigure 2 from supplemary material of Narang et al 2021. The typical workflow for user interaction with the AI guidance. Users begin (Step 1) by manipulating the probe position and watching for feedback from the quality meter. A guidance command may appear directing the user to make a specific probe manipulation to acquire a more diagnostic image. (Step 2) If the user follows the instruction, the guidance meter is likely to increase to a level appropriate for diagnostic purposes, as indicated by the quality meter. After holding the probe such that the quality meter remains in the diagnostic regime for sufficient time (Step 3a), the image will be auto recorded. If after a pre-specified time interval (Step 3b), this threshold has not been reached, the user may opt to capture the highest scoring clip thus far or continue scanning in hopes of achieving auto-capture. Screenshots from "Caption AI Product Demo | AI-Guided Ultrasound System" https://www.youtube.com/watch?v=URmb72IA4b4

Narang A, Bae R, Hong H, et al. Utility of a Deep-Learning Algorithm to Guide Novices to Acquire Echocardiograms for Limited Diagnostic Use. JAMA Cardiol. 2021;6(6):624–632. doi:10.1001/jamacardio.2021.0185 https://jamanetwork.com/journals/jamacardiology/article-abstract/2776714

Pitch

That said, further research requires to be done to have a more robust pipeline that works under challenging situations such as the Intense Care Units.

Alternatives

Additional context

mxochicale commented 2 years ago

Alberto mentions that Fausto Milletarì do some work with guidance. Perhaps thinking about estimating gradients of getting closer or far from 4CV but require more discussion with our clinical collaborators to clarify the challenges of doing AI-Guided US in the ICU.

mxochicale commented 2 years ago

Promising direction but closing this one as there is no too much bandwidth!