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Research assistant Interview Questions

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Given a set of images that represent cross sectional 'slices' of a 3D series representing the heart, how would you calculate the internal volume?

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This question was open ended in the sense that no specific imaging modality or anatomical information was requested. Internal volume of the heart would probably be referring to the volume of the ventricles, which, when calculated during different phases of the cardiac cycle can give information such as ejection fraction, which is useful in assessing cardiac function. Typically a modality that gives soft tissue data (such as MRI) would be used so that each cross section would show the difference between different tissues (ie, myocardium, blood, etc). These slices can be segmented manually or automatically to detect the borders of these different tissues. The myocardium surrounds the 'internal volume' of the heart, so it can be segmented in each slice. The segmented areas can be integrated along whatever axis the cross sections occur to determine the internal volume.

▲ 0 ▼ This question was open ended in the sense that no specific imaging modality or anatomical information was requested. Internal volume of the heart would probably be referring to the volume of the ventricles, which, when calculated during different phases of the cardiac cycle can give information such as ejection fraction, which is useful in assessing cardiac function. Typically a modality that gives soft tissue data (such as MRI) would be used so that each cross section would show the difference between different tissues (ie, myocardium, blood, etc). These slices can be segmented manually or automatically to detect the borders of these different tissues. The myocardium surrounds the 'internal volume' of the heart, so it can be segmented in each slice. The segmented areas can be integrated along whatever axis the cross sections occur to determine the internal volume.

What are your short term and long term plans

2 Answers

What goals do you have for the future that fall in line with working in a research lab

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How would you handle someone who doesn't understand the survey questions

1 Answer

What's your course load?

1 Answer

They asked me questions about the OHSA and WHIMIS (legislation related to the position). They also asked me questions on my knowledge of industrial hygiene. Very few questions on my experience / academic background.

1 Answer

Describe a time when you had a conflict with a co-worker, how you handled it, and what were the results?

1 Answer

Do you know how to animate?

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They ask for three references.

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- Matrix Region Sum - Array Pair Sum - Website hit counter - a lot of basic and fundamental machine learning and deep learning question. - fundamental language based coding question, what is the difference between list, dictionary and the underlying implementation of them in python ... - implementation of linear regression - and so on

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