Digital Image Representation Quiz

A CT scan is primarily used for diagnosing conditions like tumors and broken bones.

A CT scan produces cross-sectional images, while an X-ray provides a flat image.

CT scans are quick (10-20 minutes) and provide fast results.

<p>CT scans expose the body to some radiation and can increase exposure with more detailed scans.</p> Signup and view all the answers

<p>An MRI scan provides higher quality images with better tissue differentiation.</p> Signup and view all the answers

<p>A CT scan involves a scanner rotating around the patient to capture cross-sectional images.</p> Signup and view all the answers

<p>CT scans are commonly performed on the brain, neck, spine, chest, and sinuses.</p> Signup and view all the answers

<p>The radiologist operates the CT scanner from another room to minimize radiation exposure.</p> Signup and view all the answers

<p>A binary image is a digital image that consists of only two colors, typically black and white.</p> Signup and view all the answers

<p>A grayscale image can represent a range of intensities between black and white, allowing for varying levels of brightness.</p> Signup and view all the answers

<p>A true color image is composed of three primary colors: red, green, and blue (RGB).</p> Signup and view all the answers

<p>Medical imaging is essential for visualizing anatomical structures and assessing physiological processes for accurate diagnosis and treatment.</p> Signup and view all the answers

<p>A radiologist is a medical technician responsible for performing imaging operations and interpreting the resulting images.</p> Signup and view all the answers

<p>Artificial intelligence techniques can be applied to improve the accuracy and quality of medical imaging.</p> Signup and view all the answers

<p>Medical imaging can provide both structural and functional information about the human body, including anatomical details and metabolic activity.</p> Signup and view all the answers

<p>Medical imaging is used to track ongoing diseases, which helps in developing and adjusting effective treatment plans.</p> Signup and view all the answers

<p>An image is defined as a single picture that represents something.</p> Signup and view all the answers

<p>Images are classified according to the energy source: electromagnetic energy and acoustic.</p> Signup and view all the answers

<p>Gamma-ray imaging is used in nuclear medicine.</p> Signup and view all the answers

<p>The electromagnetic spectrum includes gamma rays, X-rays, ultraviolet, visible light, infrared, microwaves, and radio waves.</p> Signup and view all the answers

<p>A digital image can be represented as a matrix or 2-D array.</p> Signup and view all the answers

<p>Gray levels indicate the value of pixels in a digital image.</p> Signup and view all the answers

<p>Magnetic Resonance Imaging (MRI) uses radio band frequencies.</p> Signup and view all the answers

<p>Ultraviolet imaging is used for lithography and industrial inspection.</p> Signup and view all the answers

<p>A PET scan can detect metabolic changes at the cell level.</p> Signup and view all the answers

<p>A PET scan exposes you to radiation, which can lead to cancer.</p> Signup and view all the answers

<p>Ultrasound uses high-frequency sound waves that bounce off body parts to create echoes.</p> Signup and view all the answers

<p>Ultrasound has no after-effects, allowing normal activity to resume immediately.</p> Signup and view all the answers

<p>X-rays are primarily used to obtain images of bones to check for breaks.</p> Signup and view all the answers

<p>X-rays do not surround the whole body, reducing anxiety in claustrophobic patients.</p> Signup and view all the answers

<p>Ultrasound can cause sore throat, bloating, or, in extreme cases, internal bleeding.</p> Signup and view all the answers

<p>An ultrasound examination can last from 15 to 45 minutes.</p> Signup and view all the answers

<p>MRI is commonly used for diagnosis, treatment planning, and monitoring ongoing treatment.</p> Signup and view all the answers

<p>MRI uses powerful magnets and radio waves to create detailed images.</p> Signup and view all the answers

<p>MRI scans do not involve exposure to X-rays.</p> Signup and view all the answers

<p>Claustrophobic individuals may feel uncomfortable in the MRI machine.</p> Signup and view all the answers

<p>PET scans are primarily used to detect the progression of cancer.</p> Signup and view all the answers

<p>A typical PET scan takes about 30 minutes.</p> Signup and view all the answers

<p>PET scans are most commonly used in patients already diagnosed with cancer.</p> Signup and view all the answers

<p>PET scans can be combined with CT and MRI scans to create clearer images.</p> Signup and view all the answers