Who did medical physics and how did you find it? I think i may have managed full marks or at least close to it (touch wood), i wrote loads and am pretty sure i didn't leave anything out. The questions were really straight forward for med phys and the whole paper in general i thought.
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Medical Physics Option (2 Viewers)
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Wight
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Did fairly well in it I imagine...a few of my answers...I don't think I elaborated as much as I should and towards the end my 6 marker was lacking and I couldn't be effed fixing it up. Im guessing I will probably get 20's/25...hopefully closer to 25 rather than 20.
CalumGemmell
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Agreed, med physics was great, think I got about 22-24/25. Hoping for 90+ raw!
CalumGemmell
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Talked about Marie Curie and her work on radioactivity (although this was not specified in the syllabus). Just generally how the use of radioisotopes works and how it can produce an accurate reliable image, and then tie this in with increased understand of radioactive decay, half-life's etc.
cool. I talked about half lifes, decaying by positron emission, how they can be tagged to metabolic vessels like glucose to circulate in body.
PaterzAttack
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this. i was really expecting the big one to be on MRI...
what did everyone say about the x-ray and the MRI of the chest?
i talked about the x-ray imaging bone structure and the MRI imaging watery and fatty tissue, and how the chest cavity showed up as the big black space
and tried to incorporate the differences between them and why you might prefer one over the other depending on what you're looking for
i wasn't really sure about that question, it was rather vague :/ i hope i did alright
Wight
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Wait...so was it MRI or CAT? I put MRI...but a number of people had CAT (dem scans look too similar).
Anyway, I can't remember what I wrote but I'm expecting 2/3 for that question.
I thought it was a CAT scan??? There is a dot point that says, students:
- gather secondary information to observe a CAT scan image and compare the information provided by CAT scans to that provided by an X-ray for the same body part.
The dot point seems to match the question pretty well. I don't see anything about comparing MRI and X-ray images, only advantages and disadvantages.
PaterzAttack
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shit... :/
OmmU
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What did people get as the reflected pulse %? I didn't practice any of those since we did it in class so I winged it xD
OmmU
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Yer I got something tiny (I can't remember) but something like .14 is popping up in my brain (may be something completely irrelevant xD) Thanks wight.
elvishtears
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The medical physics options was so easy. For the image B I just wrote it was "Cat or MRI"
Psychoanalytic
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0.0625% for the amount of ultrasound reflected.
The six marker was amazing!! I talked about the half lives of radioisotopes and the need for them to be short in order to reduce the radiation dose on the patient, the use of positron emitters in PET scans, the use of gamma emitters in nuclear scans, combining a radioisotope such as Iodine (which is known to accumulate in the thyroid) to a radiopharmaceutical (a chemical similar to that naturally found in the body) which is consumed by the patient and then being able to detect the gamma radiation emitted by a gamma ray camera to get a clear image of the organ being studied. I talked about the PET machine, I drew the damn thing, talking about the reaction of a positron and electron that emits 2 gamma rays in opposite directions. Talked about the fact that PET scans not only give information abotu the structure of the organ being analysed but also their function. etc...
And yes, image B was a CAT scan. You needed to talk about how CAT scans allow for the ribs to be "digitally removed", where as an X-ray shows everything in it's path. You could have talked about the CAT scan showing transverse "slices" of organs allowing for a 3D image to be built of organs where as an X-ray creates a 2D image. Talk about there being more detail in image B, CAT scans can produce images with more shades of grey therefore allowing doctors to easily distinguish between tissues. 3 points would have got you full marks. I wrote a lot more though :L loved the question.
The six marker was amazing!! I talked about the half lives of radioisotopes and the need for them to be short in order to reduce the radiation dose on the patient, the use of positron emitters in PET scans, the use of gamma emitters in nuclear scans, combining a radioisotope such as Iodine (which is known to accumulate in the thyroid) to a radiopharmaceutical (a chemical similar to that naturally found in the body) which is consumed by the patient and then being able to detect the gamma radiation emitted by a gamma ray camera to get a clear image of the organ being studied. I talked about the PET machine, I drew the damn thing, talking about the reaction of a positron and electron that emits 2 gamma rays in opposite directions. Talked about the fact that PET scans not only give information abotu the structure of the organ being analysed but also their function. etc...
And yes, image B was a CAT scan. You needed to talk about how CAT scans allow for the ribs to be "digitally removed", where as an X-ray shows everything in it's path. You could have talked about the CAT scan showing transverse "slices" of organs allowing for a 3D image to be built of organs where as an X-ray creates a 2D image. Talk about there being more detail in image B, CAT scans can produce images with more shades of grey therefore allowing doctors to easily distinguish between tissues. 3 points would have got you full marks. I wrote a lot more though :L loved the question.