Chest 164; Back to Turtle Rock

24 May
Chest 164 Two bird heads

Chest 164; Back to Turtle Rock

This was originally entitled two birds heads. The technique was to overlay and subtract two images of a birds head, then distort the upper image to allow the lower to shine through. This was then overlaid with other images to induce an amazing colour scheme that even surprised me. The trees were inserted to add texture and focus. In the background the shape of the heart and ribs in the X-ray can just be seen.

Chest 163; Turtle Rock again

23 May
Chest 163 Turtle rock again

Chest 163; Turtle Rock again

 

This is the second in the series of fun images. I wanted to give a mysterious, even spiritual, impression to the site of Turtle Rock, a substantial monolith in the adjacent property. The walls of the cave underneath are covered with ancient aboriginal rock paintings.

The chest X-ray, the same used in the previous post, can be seen just emerging from between the saplings.

Chest 162; Splash

22 May
Chest 162 Splash

Chest 162; Splash 2017

After a considerable time away from my blog, I have gained enough time to spend trying to recover the small skills learned with photoshop.

The next series of four pictures including the above is an exercise using only the same few images found on a particular drive on my laptop.The aim was to find the different moods that can be created with the same images. There is only one X-ray used in the series, a picture of some trees, closeup of a bird, and some misty areas in a mountain stream.

This series has no particular medical philosophy with it, it was just fun.

 

Chest 161; Our Paddock

22 May

 

cHEST 161

Chest 161, Our Paddock 2017

The hills in this image are those behind our little farm, rising above them are the remnants of a chest X-ray taken from a very small, very sick newborn baby who had developed many complications arising from his prematurity including a pneumothorax (air in the chest spaces compressing the lungs). The infant is being ventilated and kept alive through the skill of the neonatologists. His hold on life is indeed tenuous, as is the hold we have upon the land we love.

Chest 160; OWR

16 Feb

chest-160-owr-2

Whilst not primarily a chest disease, Osler Weber Rendu (Otherwise known as Hereditary hemorrhagic telangiectasia) is a rare genetic condition of the arteries that may manifest anywhere in the body. In this disorder, the switch that controls blood-vessel growth cannot spontaneously turn off. Abnormal clusters and knots of vessels form. People with this condition often have small blood vessel malformations that cause red or purple spots on the lips or tongue. These are telangiectasia, sometimes known as birthmarks, and are commonly seen in other conditions.

The walls of the abnormal vessels are thin, weak, and fragile, and easily bleed after minor trauma. Internal blood-pressure may make them blow up like a small balloon called an aneurysm.

Millions of fine capillaries in normal lungs act to filter out any blood clots that may arise in the body. In OWR abnormal connections can also occur between arteries and veins that allow blood to shunt from one to the other. In this way, blood clots normally filtered in the lungs may cross over into the arterial system. Blood-flow then sweeps them along to lodge elsewhere in the body, including the brain where they block an artery causing a stroke.

The chest X-ray in this image comes from a person with this condition. I have retained quite a lot of the original X-ray in the picture and the complex blood vessels remain visible. People may carry the gene for the condition and never express it, and so it is impossible to know who carries this. I have therefore included several people in a crowd to represent the random nature of genetic conditions generally, and in the background complex pipework in a factory with valves and dials represent the arteries and veins of the body.

 

Chest 156; Pseudo-Aneurysm

25 Jan

chest-156-pseudo-aneurysm

When damage occurs to the wall of a normal blood vessel and bleeds into body tissues, clotting blood generally causes the hemorrhage  to stop. Leaked blood disperses and is slowly re-absorbed. However if damage occurs to the inner layer of the vessel whilst the soft, thin outer coating is unbroken, the pressure of blood into the area  may cause the thin tissue layer to blow up like a balloon and form a cavity. Pressure does not allow the space to collapse, blood swirls around keeping it open and, indeed, increasing its size. This is known as a pseudo-aneurysm.

The Chest X-ray in this image is from a 40-year-old driver one month after a major accident. He complained of a swelling above the right collarbone (clavicle) and was unable to move his right arm. An X-ray study of the artery – an angiogram – showed a large pseudo-aneurysm.

In my image, I have overlaid the man’s chest X-ray with the angiogram study of the arteries of his right arm. The artery and the aneurysm are depicted in multiple layers and I have used the colour scheme to indicate the dangerous nature of this condition.

Chest 153; Atherosclerosis

21 Dec
turtle-rock

Chest 155; Atherosclerosis – alternative title Turtle Rock

 

The series of images that build up this picture were taken on an excursion to Turtle Rock; an ancient cave close to where I live with Aboriginal paintings on walls and roof. During the walk I was much taken by the patterns of dried and flaking bark clinging to the stems and branches of white eucalyptus trees that we call Ghost Gums. It reminded me of the angiographer’s nightmare, unstable fatty deposits on internal walls of arteries – arterial fibro-fatty plaque –  and the dangers of advancing a catheter through a plaque ridden vessel. The plaque cap, like the eucalyptus bark, is often weak and prone to rupture. A catheter-tip may dislodge small pieces of the fragile cap causing it to  embolise to the periphery of the artery being investigated. Loss of the fibrous cap also exposes thrombogens that may cause thrombosis within the vessel itself. The thrombi may occlude the vessel, or could detach, move into the circulation, and themselves embolise further downstream. Angiographic techniques and catheters have been devised to minimise these risks.

The index chest X-ray was from an elderly man with calcified plaque lining the aortic arch.

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