Scan

I used to think x-rays meant you had to sit in this box that had magical powers to be able to see my bones, and now that I’m older, I realize that that’s not the case. I’ve had one CT scan and about 8 x-rays done in my life. The x-rays were for the hereditary bunions I have, but the CT scan was way more scary than the x-rays. When I was about 12 years old, something really strange happened to me. Because I didn’t really know what was happening to me, I thought I was dying. I woke up one day…

illnesses, is likely to find themselves getting a CAT scan. Computerized axial tomography or CAT scans often greatly aid in the early detection of cancer, which is a great boon for treatment and saves many lives. Besides being used as a medical diagnostic tool, CAT scans are also an invaluable in conducting scientific research. But who do you thank if a loved one has been saved from cancer’s deadly grip because it was detected early during a CAT scan? Certainly…

Introduction The CT-Scan is a medical imaging procedure that uses data from digital technology (computer) to combine several combinations of X-ray images. These images are taken from different angles to give a detailed cross sectional picture and use digital geometry processing to generate a 3-dimensional (3D) image of specific areas of structures inside a human’s body. CT- Scan is used to assist a diagnosis and early detection of disease. It is a non-invasive and painless procedure. It uses…

Faye was seen today following her PET scan and EBUS biopsy of her right upper lobe lesion. Unfortunately it has revealed a moderately differentiated adenocarcinoma and the PET san was positive in the area of the lesion. Reassuringly though there was no evidence of loco-regional lymph node spread or any evidence of distal metastases. This would normally suggest a stage 1 lung cancer but the complicating factor here is that the immunohistochemical staining has come back positive for an…

Some types of cancer such as head and neck cancer; only radiotherapy may be used. Some advantages of using a PET scan is that, it is usually painless, it can help detect, treat, or prognosticate the outcome for a variety of conditions, unlike most other imaging types, it can show how different parts of the body are working and can detect problems much earlier, and…

MRI and CT scans are important in the medical field because they distinguish between healthy and unhealthy tissue in the human body. Doctors use these tests so they can see through a picture what is wrong with a patient. Even though both tests are important and helpful, they have their pros and cons. Many people may think that MRI’s and CT’s are similar because they both provide images on the inside of the human body. These two machines work differently and are used differently. MRI scans are…

Principle: By using a scanning device to detect positron (subatomic particles) emitted by the radionuclide in the organ or tissue being examined. A PET scan uses a radioactive drug (tracer) to show this activity. The radioactive drug may be injected, swallowed or inhaled, based on which organ or tissue is being evaluated by the PET scan. Positrons are emitted by a breakdown of the radionuclide then gamma ray is created and the scanner then detects the gamma rays a computer analyses the gamma…

Pre-operative CT scan is as an important imaging tool to prognosticate the disease and assess the operability. Along with an oesophagoduodenoendoscopy, majority of these tumors were detected pre-operatively. The aim of this study is to see the association of pre-operative CT scan features and its malignant potential in our local setting and this study has shown that there is association of tumor morphology of extramural to the malignant potential of Gastrointestinal stromal tumors. Most GIST…

CT scanners and X-ray machines are extremely similar in relation to the absorption and display of x-rays as they are both able to display bone. However, an x-ray is usually done when dealing with bones rather than a CT scan as x-rays can detect denser materials better. When the x-ray is being done a black photographic film is placed behind the part of the body that is being scanned and when the x-ray beams hit this part of the body, the bones block the x-ray beams meaning the blocked image is…

the right hand side shows the corrosion damage exposed for 4 hours by Ultrasonic phased array. Fig. 9: Eddy current array result (left) and Ultrasonic phased array result (right) (Kathir & John 2005) Figure 9 shows the Eddy current array scan result (left) for a specimen. This experiment is actually Experiment No. 3 from the table. The specimen contains corrosion damage which was created exclusively for this experiment by immersing the sample in the electrolyte for approximately 30…