Diabetic gangrene of the left foot- arterial doppler

Left femoral artery spectral doppler tracing- shows pulsus bigeminus (pairs of heartbeats with the 2nd pulse weaker than the first, followed by a long pause).
The spectral doppler trace itself shows normal waveform.

The left popliteal artery- dampened waveform- moderate stenosis

Left posterior tibial artery

Left peroneal artery

Left anterior tibial artery. All the arteries below the left knee show significant dampening of flow s/o moderately severe stenosis of the left anterior and posterior tibial arteries and peroneal artery.

Interesting venous doppler of short saphenous vein

What do you think of the appearance of this vein- looked like the short saphenous vein, arising a little higher up from the popliteal vein: There was hardly any flow in the short saphenous vein:
What do you think can cause that doughnut appearance?

Varicose veins in the left calf (image above).
Answer: this is a patient of severe varicose veins of the left leg with partial thrombosis of the left short saphenous. There is a partial recanalization of the short saphenous vein (SSV) through the center of the venous thrombus- giving the Lt SSV the typical doughnut appearance. The thrombus appears as echogenic (mildly echogenic) material near the wall of the short saphenous vein. Also note the very poor to almost absent flow in the SSV.

Another case of BPH- 3D images

Yet another case of benign prostatic hypertrophy. More 3 D images with the Philips HD 15:
3D image of the enlarged prostate with intravesical enalrgement:

Mild bilateral hydronephrosis: 

Benign hypertrophy of prostate- 3D ultrasound images

Some 2D and 3D ultrasound images of benign hypertrophy of the prostate- 2D and 3D ultrasound images of the prostate and bladder:
Surface rendering of the prostate shows this organ to the bottom of the image. The machine used here is the Philips HD 15....

2D Image of the enlarged prostate:

 

3D ultrasound images of benign enlargement of prostate: that is the orange colored image to the bottom right of the group of 4 images: 

Thyroid goiter 2D and 3D images:

Some 2D and 3D images of the thyroid in a case of goiter. I would not call this multinodular goiter as yet. But there is fine nodularity of the gland and diffuse enlargement. The isthmus measures 8 mm. in thickness.
The 3D reconstruction is a sagittal reconstruction.
Again the machine used here is the Philips HD 15.
3D images: The tracheal cartilage rings are seen well:

2D B-mode images:

Some interesting 3D images- anembryonic gestation:

This 7 week gestation sac shows absence of a fetus- anembryonic gestation:

images captured using a Philips HD 15 system.

Answer to previous blog:

See my blog at:
http://ultrasound-images.blogspot.in/2012/05/left-lower-limb-venous-doppler-study.html
The answer to that quiz is: it is a case of incompetence of the saphenofemoral junction with incompetence of multiple valves of the great saphenous vein resulting in varices in the left leg. These varicose veins are associated with incompetent and distended perforator veins in that area. This is well demonstrated in the color Doppler  images and videos posted on that blog.