Wednesday, December 10, 2014

polycystic ovaries with marked enlargement

This young woman has markedly enlarged ovaries with ovarian volume well in excess of normal measurements. The follicles are all less than 10 mm. in size. All features suggesting classic Polycystic ovary disease or PCOD as it is also known.



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ductus venosus attempt in a patient who won't cooperate

What happens when we attempt duplex ultrasound imaging of the ductus venosus in a 3rd trimester pregnancy who just cant hold her breath?
These images tell the story:

During cessation of respiration (breath holding):

Observe the nice tracing/ waveform

And when the patient continues respiratory activity:
 
Note the interruption of the waveform. Possibly the sampling gate has shifted to another nearby vessel. 


Monday, October 06, 2014

The brain's natural GPS system

This year's (2014) Nobel prize for medicine was awarded for the discovery of the function of a relatively poorly known part of the human (and animal) brain called the hippocampus. Studies by the Nobel award winning scientists show that the hippocampus is responsible for the function of locating and guiding humans through various geographical locations.
Just when we docs and medics thought we knew it all, we discover that we knew ever so little, after all.
But that applies to all of science. :-)
Read what the BBC has to say about it:
http://www.bbc.com/news/health-29504761

Also a report in the NY Times:
http://www.nytimes.com/2014/10/07/science/nobel-prize-medicine.html?_r=0 

Thursday, May 22, 2014

A large ureteric calculus

This large right upper ureteric calculus presented little difficulty in being imaged. Measuring 15 mm in size, I managed to get an adequate window to capture these images. The right kidney, predictably, shows moderate hydronephrosis also.

Wednesday, March 19, 2014

Case of pelvic Right kidney

This 40 year old male patient has a surprise in his abdomen. The right kidney is located in the right side of the pelvis, which is a variation from the normal. The normal position of the kidneys is the lumbar region. The right kidney should be seen in right renal fossa close to the liver. This variant is called pelvic kidney with this organ located just to the right of the urinary bladder.
see: http://www.ultrasound-images.com/kidneys.htm#Ectopic/%20Pelvic%20kidney






Wednesday, January 08, 2014

Normal lower limb venous doppler study- using convex probe

very often while performing venous Doppler study, imaging conditions are poor due to oedema of the lower limbs with the result that it is nearly impossible to visualise adequately the veins using a high frequency linear ultrasound  probe. In these conditions, the use of our convex probe of lower frequency like the one we used for the lower limb venous Doppler study, is the only practical alternative. And indeed, the results are quiet good, even impressive with a 3.5 MHz probe. Of course, when needed, one must change the PRF settings as the situation demands.
This was a normal venous Doppler study of the right lower limb and performed entirely using the convex ultrasound probe.
1. the right femoral and great saphenous veins:
normal Valsalva manoeuvre

2. The right femoral vein- normal augmentation on calf pressure:
3. Normal compressibility of the right popliteal vein:

4. Normal, anterior tibial vein and artery:
5.The normal paired posterior tibial veins and posterior tibial artery:
for more on this topic, visit: http://www.ultrasound-images.com/vascular-doppler-2.htm

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