DEPARTMENT OF UROLOGY EDUCATION

Production Team

Dr Abraham Benjamin - Manager Medical InformaticsMr. Naresh Kumar - Coordinator Medical Informatics

CT/MRI

What is CT Scan? Computed axial tomography, also known as CAT scan or CT scan, is an imaging technique

that is a widely regarded tool for evaluating the genitourinary tract.

CT Scan can also be performed without contrast. They are called as Non contrast CT.

Non Contrast CT is very useful in patients who have Renal Failure and in an Emergency where the use of contrast is not recommended.

How does CT scan Work CT scanning combines X-rays and computer calculations to produce precisely

detailed cross-sectional slices of images of the body's tissues and organs.

More specifically, very small, controlled beams of X-rays, rotating in a continuous 360-degree motion around the patient, pass through the tissue as an array of detectors measure thousands of X-ray images or profiles.

Computer calculations based on those multiple measures produce the detailed pictures reflected on a screen. These images can be stored, viewed on a monitor or printed on film. In addition, stacking the "slices" of images can also create three-dimensional images of the body's internal structures.

Since CT scans can distinguish between solid and liquid, it is extremely valuable in

examining the type and extent of kidney tumors or other masses, such as stones or cysts, distorting the urinary tract.

Where is the test performed ?

The test is performed in a radiology department by a technician under the supervision of a radiologist. The patient will be asked to lie in a certain position on a narrow table that slides into the center of the scanner.

Dye may also be administered into a vein in the hand or arm. The technician will issue instructions to the patient regarding body position and breathing during this test. Upon test completion, the patient can resume their normal daily activities.

How do the images look like?

What are the risks involved in CT?

CT scanning is a safe, efficient and effective technology that produces minimal risks.

The major risk involves a reaction to any iodine-based dye that may be used.

Minor reactions to the dye may include hot flashes, nausea and vomiting.

In very rare circumstances, more severe complications, breathing difficulties, low blood pressure, swelling of the mouth or throat and even cardiac arrest can occur.

There is relatively low radiation exposure during this test. However, a patient who is or may be pregnant should notify their doctor prior to this examination as a fetus is susceptible to the risks associated with radiation.

What is MRI? Magnetic resonance imaging (MRI) is a superior technique that uses radio

waves and a strong magnetic field to provide remarkably clear pictures.

Because of its ability to show soft tissues in exquisite detail, this technology can detect disease and detail blood vessels or other structures.

In the kidney system, an MRI can distinguish a hollow cyst from a solid mass, producing excellent three-dimensional images of any tumor's shape.

In particular, its super sensitivity can help urologists identify and measure the spread of kidney cancer.

What is MRI?

How does MRI Work ? MRI is unique among imaging methods because, unlike

radiographs (X-rays,), CT scan and even radioisotope studies, it does not use ionizing radiation.

Instead, MRI uses a strong magnet, radio waves and computers to create detailed images of the body.

More specifically, lying inside a massive hollow magnet, a patient is exposed to short bursts of powerful non-ionizing radio wave energy.

Where and how is MRI done? This test is performed in a hospital radiology department by a technician

under the supervision of a doctor. No patient preparation is necessary prior to this test.

The patient will be asked to lie on a narrow table, which slides into a large tunnel-like tube within the scanner. The patient's head will be placed in a padded plastic cradle or on a pillow and the table will then slide into the scanner. The patient will be instructed to breathe quietly and normally but to refrain from any movement, coughing or wiggling.

While the scanner is taking images, the patient will hear rapidly repeating, loud thumping noises coming from the walls of the scanner, so earplugs are usually provided to the patient to reduce the noise. The entire test usually takes between 30 and 60 minutes to complete. Following the test, the patient may resume their normal daily activities.

How do the images look like?

The above picture shows the MRI of the Urinary Bladder

What are the risk factors for a patient Before MRI?

For generally healthy individuals, MRI poses no risk.

But patients with pacemakers, aneurysm clips, ear implants and metallic pieces in vital body locations MRI poses a risk.

Important Information

If you need more details to get this test done or meet our team of Urologists for Consultation click on the link below.

http://www.ramayyapramila.com/

Superior and Compassionate Care

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