Questions tagged [biomedical-engineering]

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14 questions with no upvoted or accepted answers
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88 views

Implications of concatenating EEG signals

I am wondering about the mathematical implications of concatenating very small windows from different trials. All of the trials are the same size, and are for the same period of time after a stimuli. ...
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0answers
84 views

Logistic regression in LabVIEW

I am using a psychophysical model to calculate the probability (P) of detecting an electrical stimulus to the skin (amplitude = x) over time (t): \begin{equation} P(x;\alpha(t),\beta) = \dfrac{1}{1+e^...
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0answers
24 views

Pearson correlation of neural responses with it's linear estimation

I am trying to anderstand the following fact from this article (page 13): How can single neurons predict behavior Suppose I have a linear estimation of a stimulus: $ \hat{s} = \mathbf{w}^T(\mathbf{r} ...
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26 views

SNR for good MRI imaging

Resolution of MRI can be improved if FOV is reduced keeping other factors constant, but this reduces voxel volume, which in turn reduces SNR. How much SNR is enough for good imaging?
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0answers
30 views

Searching for Anterior Cruciate Ligament MRI Images for Finite Element Model.

I'm searching for 3D MRI images for generating an mesh to be used in a Finite Element Modeling project. My group has access to a low-resolution CT scan and cadaver knees, but we don't have any good ...
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0answers
39 views

Metal detectors for medical applications

My group and I are currently working on a biomedical engineering project for our class. Our design idea is a wearable metal detector that uses metallic tracers in the blood to determine the ...
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0answers
65 views

What kind of materials are plastic syringes made from?

I'm trying to figure out what kind of materials my disposable plastic syringe is made from. I have a Medefil MIS-1130 syringe and when I visited the company website I couldn't find any information on ...
1
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0answers
158 views

Finding My, Mz in Complex/Asymmetrical Beam Bending

So I have done a three point loading test on a piece of bone. I have been able to obtain the Second Moments of Area $I_{xx}$, $I_{yy}$, $I_{zz}$. As well as the centroid. I also have the data from ...
0
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1answer
17 views

What do you think are the difficulties in tissue engineering of complex organs such as the heart and liver, as compared to skin?

What do you think are the difficulties in tissue engineering of complex organs such as the heart and liver, as compared to skin?
0
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1answer
92 views

How is the first image estimate generated in CT scan iterative reconstruction (IR)?

Background info: For decades CT scanners produced medical images from x-rays travelling through the tissues of the patient at different angles through analytical methods based on the Radon transform ...
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0answers
40 views

Why aren't artificial gills used together with oxygen tanks for diving?

Artificial gills aren't used for diving, not because they can't extract oxygen out of water, but because they won't provide enough oxygen for someone to breathe (only arround 1% oxygen in water ...
0
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1answer
32 views

Pulse Oximetry, does the decimal matter?

I work in a sleep research lab. We have a couple of Masimo pulse oximeters that report pulse oximetry values in terms of integers (e.g. 90, 91, 92, etc.). Now our principle investigators used to use ...
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0answers
19 views

How to obtain the radial strength of a stent model in ABAQUS

I am simulating the crimping of a stent in ABAQUS/Standard using a 3D deformable cylinder on which I impose a displacement in order to crimp the stent from an initial diameter of 2.5 mm to a final 1 ...
0
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1answer
56 views

Polarity of a relative angle - Knee joint angle

I'm wondering if it's correct to write: $$ \alpha = \theta_{lg} - \theta_{th} $$ EDIT: the theta angles are defined positive in counter-clock direcction, instead alpha in clockwise direction. My ...