Positron Emission Tomography and Computerised Tomography is one of the advanced and highly sensitive imaging tools that help in accurate and early detection of cancer by identifying the metabolic signals of cancerous cells within an individual. Besides, CT provides a detailed account of the shape, size and location of the cancer growth. Thus, a PET-CT helps in understanding dimensions and the stage of cancer, at the same time. PET-CT has designated a more accurate technique in detecting cancer than any other method.
PET-CT for Cancer
Cancer can be detected in
Computed Tomography (CT)
Computed Tomography (also known as Computer Axial Tomography, CAT) is a non-invasive radiological method that can detail internal organs such as soft tissues, bones, organs and blood vessels in the entire body. The method can build 3-dimensional images after reformatting the images received in multiple planes. CT scan is useful in detection of cancer, to perform biopsy, cancer recurrence and targeted therapy. In cancer screening, CT can be used to detect colorectal polyps, colorectal tumours, both pulmonary and non-pulmonary abnormalities, etc.
PET-CT for Cancer
Magnetic Resonance Image (MRI)
Magnetic Resonance Imaging uses strong magnets and radio waves to develop a detailed account of an individual’s internal body structures. Contrasting to CT and PET-CT, MRI does not use ionising X-ray radiations. MRI can help identify aneurysm, multiple sclerosis, stroke, eye and ear problems, injury to the brain, cancer, blocked blood vessels, pericarditis, structural problem of heart, brain, kidney, etc. In addition, functional MRI (fMRI) can also map brain activity. This can help detecting Alzheimer’s, Parkinson’s, brain injury, brain tumour, etc. MRI is a must for Pregnant women in their 1st trimester to detect organ development of the baby.
Abnormalities of organs such as
Doppler is a non-invasive method uses bouncing ultrasound waves from the circulating erythrocytes to evaluate the blood flow through the vessels. The bouncing ultrasound waves are used to develop images. Doppler helps in diagnosing blood clots, venous insufficiency, arterial blocks and aneurysms, congenital disorders, arterial stenosis, etc. Doppler can serve as an alternative to angiography and even X-rays. Colour doppler involves a computer to transform the sound waves to diversified colours. Colour doppler can help us to track the blood flow and speed in real time.