Saturday, July 28, 2012

Some useful free video editing software

http://www.freemake.com/free_video_converter/ 
This is a very useful free software/ freeware to convert videos from avi, mpg, mpg4 etc. to various formats as well as for converting audio files. A must have. I've used it and there were no bugs detected.


Want to join video clips together in a couple of clicks? Free video joiner is the freeware that does this in a couple of clicks. Easy to use and a very simple interface:
http://www.freevideojoiner.com/

Zweistein is also a simple and free software that is a great video editor.
You can use its crop function to remove those identity details from video clips (remove the names of patients and other such ID details) from the borders of video clips.
See: http://www.thugsatbay.com/tab/?q=zweistein




Thursday, July 19, 2012

Ultrasound imaging of large epigastric hernia

Video clip showing ultrasound imaging of this large epigastric hernia in a middle aged man:



  

Ultrasound images show the large midline defect in the abdominal wall with hernial sac protruding through the epigastric defect:
















See: http://www.ultrasound-images.com/musculoskeletal.htm for more on this topic

Friday, July 13, 2012

Inguinoscrotal hernia -ultrasound imaging




The hernial sac is seen above the right testis in this ultrasound video of the right scrotum. A small amount of fluid is seen in the hernial sac. The video shows a few bowel loops with peristalsis within the Rt. inguinoscrotal hernia.
More ultrasound images of this case are shown below:
(Machine used is the Philips HD 15 system):

















See more cases of inguinal hernia at: http://www.ultrasound-images.com/scrotum.htm#Indirect_inguinal_hernia_forming_large_Right_scrotal_swelling

Wednesday, July 11, 2012

Sonography of the fetal ductal arch



   A sagittal section of the fetal ductal arch (see the ultrasound video above) shows the typical hockey stick shape of the ductal arch as it emerges from the fetal right ventricle. Observe closely, that in sagittal section the fetal right ventricle is the chamber that is adjacent to and just behind the anterior chest wall (the sternum) of the fetus.
  The fetal aortic arch, on the contrary is an umbrella shaped structure and is seen to arise more posteriorly (see ultrasound image below).


Tuesday, April 3, 2012

Normal fetal echo quiz

Name the structures marked by the numbers 1,2 and 3 in this fetal echo of a 28 week fetus:
Still image is shown below:














The ultrasound video of this same case is shown below:




Hint: see: http://www.ultrasound-images.com/normal-anatomy.htm#Normal_3_vessel_view_in_a_28_week_fetus

Sunday, April 1, 2012

The ductus and 3 vessel view in 30 week fetus

Just some stunning ultrasound and color Doppler images and a video of the 3 vessel view during fetal echo in a 30 week fetus. In the color Doppler image below, the right pulmonary artery is seen crossing behind the ascending aorta (left half of image). The ductus arteriosus (red) is seen merging with the aortic arch (blue) to the left of the spine (right half of image).














Image below shows details of the 3 vessel view.















The video below shows the 3 vessel view again in this 30 week fetus. The visualization of the ductus may vary depending on imaging conditions.

Thursday, March 29, 2012

Fetal echocardiography basics- the ductus arteriosus:

This article is about ultrasound imaging of the fetal heart and in particular the 3 vessel view. After the four chamber view of the fetal heart, the most important view is the 3 vessel view and that too the imaging of the fetal ductus arteriosus. This vessel (the ductus arteriosus) is the direct continuation of the fetal pulmonary trunk and is part of the trifurcation of the pulmonary trunk into three main vessels- the right and left pulmonary arteries and the ductus ateriosus. It requires a lot of patience of image the fetal ductus ateriosus in its entirety and often is the exercise can be frustrating. I had a lot of trouble identifying the ductus arteriosus correctly and hence I have captured a good number of videos and dedicated many articles to this topic.
Here are some good fetal echo 3 vessel view images:














Ultrasound images of the ductus arteriosus and its relation to the arch aorta as they both meet in a V shape posteriorly:















ANTR= ANTERIOR
POSTR= POSTERIOR
DUCT= DUCTUS ARTERIOSUS
DESC AO= DESCENDING AORTA
PA= PULMONARY ARTERY
AA= ARCH OF AORTA
SVC= SUPERIOR VENA CAVA

The ultrasound video clip below shows the 3 vessels, namely the superior vena cava (on the right), the aorta (middle) and pulmonary artery (left). The sequence of the 3 vessels can be memorized from right to left by the word- SAP. The ductus is at the bottom (left) of the images and is seen meeting the arch of the aorta with which it forms a V shape. (see: http://www.ultrasound-images.com/normal-anatomy.htm  )