CONTACT DATA:

CONTACT DATA:
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Posted by: Greg Lance-Watkins
DoB: 26-Jan-1946
Chepstow, NP16 7LR, Monmouthshire, United Kingdoms.
tel: 01594 - 528 337
on: http://GregLanceWatkins.Blogspot.com

All ideas and info. provided here are to be discussed with your medical professionals. I am NOT Medically trained. I have merely had this vile disease since 1998 - always use your Common Sense and seek expert medical advice.
YOU MAY FIND THE LINKS in text and in the Right Sidebar of Help.
I can NOT vouch for any external site that I may direct readers to & therefore can NOT accept any legal responsibility - this is a personal blog of that which I believe only.
I do NOT believe there are magical cures hidden from us by our medical professionals though there are without doubt cases that seem cured as if by magic. Medical knowledge of this disease is very rudimentary and research frequently profligate but pointless!
However - sticking goji berries in your ear on a moonless night or similar WILL NOT HELP - Nor will the price paid for quackery be it here OR Mexico, Brazil or China!
There are many health care professionals trying their very best with great care and compassion but perfection is a little way off!
Be Minded:
I have cancer - cancer does not have me!

"Cowards die many times before their deaths; The valiant never taste of death but once.
Of all the wonders that I yet have heard, it seems to me most strange that men should fear;
Seeing that death, a necessary end, will come when it will come". - (Julius Caesar - Act II, Scene II).
Showing posts with label Linear particle accelerator. Show all posts
Showing posts with label Linear particle accelerator. Show all posts

Friday, 12 August 2011

A ROUNDUP + Velindre - appt.: Dr. Lester re.: MRI Results - 12-Aug-2011 - 15:15

A ROUNDUP + Velindre - appt.: Dr. Lester re.: MRI Results - 12-Aug-2011 - 15:15
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Hi,

well a whole week since my last Radio Therapy and I still seem OK!

I was on time for a change so not driving hell for leather.

As I thought Jason Lester is still on holiday and was right so I saw his Registrar Rachel Micalles - I am pleased to say the MRI scan has for certain shown up no signs of mets. in the spine anywhere nor in the sacrum or seemingly the pelvis so that is the good news!

The not so good news is that I do have fairly notable degenerative disease in the spine - I offered the explanation this might be as a result of a degenerate life but seems not!

They are not sure what causes it but in the main, in my case, put it down to being the result of wear and tear damage - well I guess I've earned that diagnosis!

I gather that being more specific about diagnosis is not really worth the effort at this stage as the likelihood it will be some form of arthritic condition seems certain and clearly I am shrinking!

I have in fact lost about 3 inches in height largely as a result of the disease, though scoliosis and being cut in half do little to help!

SO BACK TO CANCER!:

It seems I have survived remarkably well to date! I am told that the Chemo. did indeed shrink the tumour and seems to have killed off the cancer in the lymph system - SEEMS is an important word here as it is, at this stage hard to tell!

Then having had, as described in this blog, very little side effects from the belting with chemo. it was on to Radio Therapy and 20 rides of around 57 seconds on the Linear Accelerator being cooked with accelerated electrons!

To date I have also survived this well - I was reliably informed that I would most likely be far too unwell to drive myself to treatment every day but fortunately I drove myself on every occasion and apart from around an hour in the evening when I felt very tired I have had virtually no side effects of consequence.

At the moment I am told there is little point in scans or a 'flexi' as the full effects have not completed adequately to conclusively show up and apparently the inside of the bladder is likely to be fragile and inflamed AND very prone to the introduction of infection so leave well alone.

Next appointment is now Mid October - which beats even the original 6 month prognosis at best!

SIDE EFFECTS:

It is not strictly true to say ZERO side effects but for sure they have so far been inconsequential.

At one stage for a day or two I had perifferal vision flashes which were a bit odd and I guess must have been an effect on the optic nerve of the blood supply due to cancer (maybe not!).

Fortunately I have not felt sick at any stage and my appetite has been fairly good - largely due to the efforts of Lee in pandering to it! Also to be fair thanks to Nairn in the early stages for the constant supply of relevant mouth washes such as 'Difflam' which controlled the problems of mouth tongue and upper throat ulcers, which only really featured in the early days of Chemo.

There have been periods of mild diarrhea but of little consequence and with the hernia to my nephrectomy wound I have got used to this!

Several of the other patients have said their diarrhea has been quite a problem at times - fortunately mine has been only occasional and no problem.

There is no doubt they have been playing merry hell with my bladder! Particularly during Radio Therapy and I am urinating far too often for convenience! Particularly at night where I rarely get more than around 2.1/2 hours of continuous sleep without a visit to the toilet!

To be fair I do consume a fairly high level of fluid with around 2 pints of fruit juice a day minimum and at least 4 pints of milky strong coffee.

I also consume not less than a pint of yoghurt a day in one form or another - I FEEL that since the system is being bombarded and the gut flora seriously damaged or at best irritated it is worth helping with a replacement together with a consequential amount of fruit relative to normal.

Well if the treatment is working and these are the worst symptoms so far I would call this a very good trade off - though we will not know just how successful the treatment has been for a few months. That said the very fact that I am still here is very much down to the treatment as in April I well recal Jason Lester's prognosis that without treatment I had a probable 3 months at best 6. Well I'm still here and feeling OK - of course not 100% energy wise but beyond that I can hardly complain and this is after all 13 years after I first presented with 'frank haematuria' (I miss spelled that and MS correction was 'crematoria' Ha Ha!) as the first symptoms of all the fun to come since!!

Haematuria:

A passing tip for those who are too scared to go to their Doctor if they think they may have blood in the urine the obvious diagnosis is 'stupidity'!

Blood in the urine is a SYMPTOM only go see your Doctor as soon as possible - most causes can be dealt with simply the others WILL KILL YOU if you let them get hold undiagnosed!

A simple test if you are in doubt is to pass ALL urine into a glass (clean) coffee jar and leave it to stand until naturally cooled blood in the urine is likely to settle out as a distinct band but just because it doesn't does NOT mean you should avoid seeing your Doctor.

Blood in the urine is also an early sign of possible diabetes and minded that The EU is threatening to withdraw driving licences from those with diabetes who let it reach the stage of injectable Insulin perhaps an early check is well advised!
.
 Please Be Sure To
My Blogs
To Spread The Facts World Wide To Give Others HOPE
I Have Been Fighting Cancer since 1997 & I'M STILL HERE!
I Have Cancer, Cancer Does NOT Have Me

I just want to say sorry for copping out at times and leaving Lee and friends to cope!
Any help and support YOU can give her will be hugely welcome.
I do make a lousy patient!
.
If YOU want to follow my fight against Cancer from when it started and I first presented with symptoms see The TAB just below the Header of this Blog. called >DIARY of Cancer< just click and it will give you a long list of the main events in chronological order.
.
Thoughts and comments will be in chronological order in the main blog and can be tracked in the >ARCHIVE< in the Right Sidebar.

You may find the TABS >MEDICAL LINKS< and also >CANCER LINKS< of help.
.
YOU are welcome to call me if you believe I can help in ANY way.
.
Posted by: Greg Lance-Watkins
tel: 01291 - 62 65 62
on: http://GregLanceWatkins.Blogspot.com  
TWITTER: Greg_LW  
Health/Cancer Blog: http://GregLW.blogspot.com  
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Monday, 11 July 2011

RADIO THERAPY (LinAc) Day ONE! - 11-Jul-2011

RADIO THERAPY (LinAc) Day ONE! - 11-Jul-2011
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Hi,

I was quite glad we had arrived early - we had expected rush hour traffic but it seems few people work in South Wales! There were no appreciable build ups of traffic either as we drove past Newport on The M4 nor as we drove on to The Bryn Glas Tunnel and on past Cardiff at around the speed limit almost all of the way - unimpeded by people on their way to work!

Then on to exit 32 and into WhitChurch and Velindre.

The procedure once checked in was to wait in the waiting room of the Machine one is calibrated to! In my case LA3.

The Linear Accelerator is a large piece of equipment with a large price tag of between £1.2 & 1.5 Million + the cost of installation maintenance and a hands on crew of 3 in a spacious and well lit room.

As you wait in the waiting room it is clear many of the patients are regulars and know eachother as they sit there with their issue blue plastic bags as slippers! This is designed, I understand, to track the minimum of outside contaminant into the machine area.

Also it soon becomes clear that dependent on what exact location is being zapped whether you are a drinker or a pee-er! I gather people with prostate cancer being zapped have to drink a certain amount of water before their treatment whereas I with a tumour on the uretal stub on the bladder am expected to empty my bladder as much as I can.

These different perfomances to order are designed to ensure that each treatment the organ concerned will be the same size and position!

The machine or should I more kindly call it an instrument is similar to this one but different!! Though it is made by Elektra:
The gantry itself rotated as do the individual heads as the bed liftf and lowers and moved in the lateral plane to get positioning spot on.

Then it is onto the metal monster (well plastic coated) where one is positioned EXACTLY and the three tattoos from assesment last week are lined up with the lasers  (one on each hip approx on the joint and the third on the pubic bone). Positioning is and needs to be very precise and then a scan is done to identify excatly where the tumour is.
The large Accelerator head is then swung through various positions to take exact measurements befor the 3 operators withdraw to safety and out of the room whilst you are left on the table in exactly the right position for the accelerated particles to be fired through me.

In my case my oncologist has decided the dosage (length of bombardment) and direction, which is 3 positions of the beam/particle accelerator one from aboveslightly obliquely and two from the left side at different angles.

I presume the oblique is to avoid the particles passing through the spine on the way out!

The beam of accelerated particles continues from each position for between 15 & 28 seconds it seems - thereby determining the dose or for that matter damage done!

The Particles enter the body and pass out the other side, I gather doing damage all the way through, so on any one visit a straight line of damage is done through 3 lines but each passes through the tumour. Next visit the beam will pass through 3 slightly different lines but every time Zapping the tumour.

There is no pain sensation in fact the only giveaway the machine is on is that everyone legs it out of the room and one has a David Howarth moment; I hope you have read the WWII epic of survival 'We Die Alone' which he wrote or that comment will make little sense!

Also as the ray actually fires the machine makes a noise similar to an electrical shorting of a cable.

The whole procedure takes only a few minutes and there is no realisation that it has been done!

Then it is clamber off the machine, in my case due to having lost all my stomach muscles and nerve instructions in 2001 due to the operation, subsequent MRSA infection of the wound and gross hernia of the wound - the staff help me back to a sitting position.

Then cheery chats and 'see you tomorrows' and back onto The M4 for the 70+ mile round trip. Remembering to take ones blue plastic bag slippers with one!
 .
 Please Be Sure To
My Blogs
To Spread The Facts World Wide To Give Others HOPE
I Have Been Fighting Cancer since 1997 & I'M STILL HERE!
I Have Cancer, Cancer Does NOT Have Me

I just want to say sorry for copping out at times and leaving Lee and friends to cope!
Any help and support YOU can give her will be hugely welcome.
I do make a lousy patient!
.
If YOU want to follow my fight against Cancer from when it started and I first presented with symptoms see The TAB just below the Header of this Blog. called >DIARY of Cancer< just click and it will give you a long list of the main events in chronological order.
.
Thoughts and comments will be in chronological order in the main blog and can be tracked in the >ARCHIVE< in the Right Sidebar. You may find the TABS >MEDICAL LINKS< and also >CANCER LINKS< of help.
.
YOU are welcome to call me if you believe I can help in ANY way.
.
Posted by: Greg Lance-Watkins
tel: 01291 - 62 65 62
on: http://GregLanceWatkins.Blogspot.com
TWITTER: Greg_LW  
Health/Cancer Blog: http://GregLW.blogspot.com  
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Sunday, 3 January 1971

ITEM 03 - RADIO THERAPY & LINEAR ACCELERATORS

DATE .
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###########
How a Linear Accelerator Works  
8mins. 24secs.

#############
This is the Linear Accelerator I have been callibrated to at Velindre LA3
This is an Elekta Synergy

There is quite an informative brochure for The Elekta Synergy at:
CLICK HERE

The main parts seem to be:
The bed on which one lies is far from comfortable - with your feet in the Red block/stirrups?
Kneed slightly elevated over the formed cushion.
and a positioned head rest (blue).
The bed can be rotated as you can see from the floor and raised and lowered with movements to and fro and from side to side.
The positioning will no doubt be different dependent on which part of you is being 'treated'.
 
Exact positioning will be achieved by the CT scanner which is a part of the instrument
This takes a limited number of slices to reduce XRay irradiation - thus giving an accurate position of the tumour to be treated, in my case the exact position of the uretal stump tumour on the outer surface of the bladder.

Use of the scanner may well only be on some treatments as a check that position has not subtly changed since the last scan.
The LinAc Collimator delivers the accelerated particles focused and targeted.

To exactly the right point as located by the CT Scanner.

A Collimator is a device for focusing and narrowing a beam of particles or a wave length - in this case the accelerated particles.

This schematic shows the beam creation and the  large item in the center, which is the magnatron, produces radio frequency waves which are passed along the wave guide to the electron gun at the extreme left in the diagram.

The electron gun passes the beam over a heated Tungsten element generating electrons whish are accelerated to near the speed of light up the long accelerator tube from left to right.
As the beam of electrons passes along the tube it is refined by passing through a series of small centered holes or irises in succession. The beam is further refined and focusesd to aproximately the width of a pin head by passing througjh a series of magnets.

The heat created, even though the tube is a vacuum, is cooled by a water outer sleeve.

The refined beam enters the flight path and is further refined by bending it through three magnetic fields

The output is then fired at a target creting a beam of XRay particles in a cone shape which is further shaped to treat in the shape of the tumour.

There is, not surprisingly, damage caused to healthy tissue on route in to the tumour and on route out - this is minimised by varying the direction in and out by aiming the beam from different locations, all ensuring maximum dosage for the tumour and minimum dosage for the surrounding tissue.

Damege does occur as a colateral result of aiming to kill the tumour. It is to be hoped that the tumour is killed before irreprable damage is done to surrounding tissue - normal tissue will tend to heal if not too greatly damaged.

A side effect can be that the damaged tissue that was not cancerous may fail in the future as in those who have radiation therapy for prostate problems may have damaged the bladder control or lower colon.

This article CLICK HERE may be of interest to you as it deals with residual damage and the possibility of hyperbaric oxygen therapy as a possible aid to healing of surrounding tissues.

I am given to understand that the instrument/machine itself costs between £1.2 & 1.5 Million, when one considers the costs of instalation and security of the site together with the space required it is little wonder that the treatment is on a closely scheduled basis.

I have been most fortunate with my treatment as all of the staff at Velindre are clearly dedicated to their jobs and particularly helpfull answering all of my questions which are not unnaturally based on ignorance - together with no small dose of fear motivated curiosity ;-)

That I have been swimming out of my depth I do hope my simplistic answers to questions will prove of help to those following down the path or their relatives and friends.

Elekta, Inc. 4775 Peachtree Industrial Boulevard, Building 300, Suite 300, Norcross, GA 30092
Tel: 770-300-9725 Toll: 800-535-7355 Fax: 770-448-6338 www.elekta.com

ELEKTA SYNERGYTM
KEY FACTS
  • One in three people will develop cancer during their lifetime with the most common forms
being breast cancer in women and prostate cancer in men.¹
  • Most cancers can be treated alone or in combination with surgery, radiotherapy, chemotherapy
or hormonal therapy.
  • Approximately four out of ten people with cancer have radiotherapy as part of their treatment.²
  • Elekta Synergy™ is a new radiotherapy treatment system that is the first of its kind to target
cancer tumors via an integrated three-dimensional imaging system.
  •  Elekta Synergy™ fulfills the need for increased precision and accuracy in radiotherapy by
delivering more direct and intense radiation to a tumor while avoiding damage to surrounding
healthy tissue.
What is radiotherapy?
  •  Radiotherapy is a key form of treatment for approximately four out of ten people with cancer,
where radiation is directed at a patient’s tumor in order to kill the cancerous cells.
  •  Radiotherapy is usually administered daily, over a period of time as long as six weeks.
  •  While damaging cancer cells, radiation can also affect surrounding healthy cells if it is not
directed with a high degree of accuracy and precision.
  •  Traditionally, Computed Tomography (CT) scans have been taken prior to treatment to identify
the exact location of the cancer tumor.
  •  The volume of tissue irradiated is increased to account for the uncertainty in the position
of the volume to be irradiated. This uncertainty can be due to a number of causes:
– The accuracy with which the patient can be positioned on the therapy machine.
– Movement within the body (e.g. movement caused by breathing).
– Changes between the time of CT scan and actual treatment.
Elekta, Inc. 4775 Peachtree Industrial Boulevard, Building 300, Suite 300, Norcross, GA 30092
Tel: 770-300-9725 Toll: 800-535-7355 Fax: 770-448-6338 www.elekta.com
What is Elekta Synergy™?
  •  Elekta Synergy™ is an advance radiotherapy system used to treat cancerous tumors.
  •  Elekta Synergy™ is the first system of its kind to combine the scanning (X-ray Volume
Imaging or XVI) and treatment processes in radiotherapy to give a ‘real-time’ indication
of the cancer tumor location during treatment.
What are the key benefits of Elekta Synergy™?
  •  The high degree of accuracy and precision with Elekta Synergy™ significantly reduces the
number of healthy cells affected by the radiation.
  •  The increased accuracy and precision with Elekta Synergy™ offers the promise that higher
doses of radiation can be safely used in treatment, resulting in a shorter treatment process
for the patient and healthcare professional.
Who will benefit from Elekta Synergy™?
  •  Anyone suffering from cancer who needs radiotherapy treatment could significantly benefit
from the improved safety, accuracy and efficiency of Elekta Synergy™.
  •  Elekta Synergy™ can help to treat some of the most prevalent forms of cancer, such as breast,
prostate and lung.
  •  Utilizing radiotherapy resources efficiently will reduce treatment times, thereby reducing
hospital costs and maximising income.
How effective is Elekta Synergy™?
  •  The success of Elekta Synergy™ has been brought about through close collaboration with
Elekta clinical partners:
− Princess Margaret Hospital, Toronto, Canada
− William Beaumont Hospital, Royal Oak, Michigan, USA
− Christie Hospital, Manchester, UK
− The Netherlands Cancer Institute (NKI), Amsterdam, The Netherlands
“For the first time the cone beam system lets us see what we want to hit with our treatment by
giving us a continuous set of detailed 3-D X-ray images of the patient when the patient is lying
down on the treatment couch. This means we can even move towards better cure rates by safely
increasing the doses we deliver in radiotherapy.”
(Professor Chris Moore, Consultant Physicist, Christie Hospital)
Elekta, Inc. 4775 Peachtree Industrial Boulevard, Building 300, Suite 300, Norcross, GA 30092
Tel: 770-300-9725 Toll: 800-535-7355 Fax: 770-448-6338 www.elekta.com
“We can now target the tumor more accurately using three dimensional volume imaging and
closely follow the organ movement before and during treatment.”
(Professor Bartelink, The Netherlands Cancer Institute)
When is Elekta Synergy™ available?
  •  Hospitals can currently purchase the Elekta Synergy™ platform with a view to upgrading to the
full Elekta Synergy™ system when it becomes available in August 2004.
  •  Elekta Synergy™ is a continually evolving product with the potential to benefit from long-term
technological advancements in the field of radiotherapy.
 
References
1. CancerBACUP website: http://www.cancerbacup.org.uk/info/what-is-cancer.htm
2. Cancer Research UK website: http://www.cancerhelp.org.uk/help/default.asp?page=3586
More information about Elekta Synergy™ is available at www.elekta.com
 
For more details of Velindre's use of Elekta Synergy systems CLICK HERE
 .
 Please Be Sure To
My Blogs
To Spread The Facts World Wide To Give Others HOPE
I Have Been Fighting Cancer since 1997 & I'M STILL HERE!
I Have Cancer, Cancer Does NOT Have Me
I just want to say sorry for copping out at times and leaving Lee and friends to cope!
Any help and support YOU can give her will be hugely welcome.
I do make a lousy patient!
. If YOU want to follow my fight against Cancer from when it started and I first presented with symptoms see The TAB just below the Header of this Blog. called >DIARY of Cancer< just click and it will give you a long list of the main events in chronological order. . Thoughts and comments will be in chronological order in the main blog and can be tracked in the >ARCHIVE< in the Right Sidebar. You may find the TABS >MEDICAL LINKS< and also >CANCER LINKS< of help. . YOU are welcome to call me if you believe I can help in ANY way. .
Posted by: Greg Lance-Watkins
tel: 01291 - 62 65 62
on: http://GregLanceWatkins.Blogspot.com TWITTER: Greg_LW Health/Cancer Blog: http://GregLW.blogspot.com  
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