jump to navigation

Researchers capture motion of arteries, lungs November 18, 2008

Posted by tomography in CT, Radiology.

Computer tomography has a very high cost/benefit value, and thus is very popular in medicine in general. Capturing high resolution images of the body in no longer an obstacle with today’s modern scanners. However, even the latest and most expensive scanners may have a hard time capturing the motion of arteries and small airways without considerable distortion. Researchers at the RIKEN Advanced Science Institute in Wako, Japan, have developed a system that allows for the capturing of such high quality images in rodents.

They used synchrotron radiation at the SPring-8 Center in Harima, which is much more powerful and predictable than standard laboratory sources, and so achieves high contrast resolution and minimizes blur (Fig. 1). The shutters for x-ray source and detection were synchronized. The sample rodents were anaesthetized, put onto a ventilator, and connected to an electrocardiogram (ECG) machine. The researchers were then able to acquire data at controlled airway pressures and time observations for the periods between heart contractions. For heart and arteries, image acquisition could be timed for the end of breath expiration.

Images acquired with this technique allow for the calculation of gas exchange in small airways, and of shear stress in blood vessels.


Further reading:

– Andras



No comments yet — be the first.

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out /  Change )

Google+ photo

You are commenting using your Google+ account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )


Connecting to %s

%d bloggers like this: