Computed tomography, lower extremity; without contrast material
CPT4 code
Name of the Procedure:
Computed Tomography (CT) of the Lower Extremity; without contrast material Common name(s): CT scan of the leg, Non-contrast lower extremity CT
Summary
A Computed Tomography (CT) scan of the lower extremity without contrast is a diagnostic imaging procedure that uses X-rays to create detailed cross-sectional images of the bones and tissues in the leg. This type of scan does not involve the injection of contrast material.
Purpose
This procedure is used to diagnose and assess conditions such as fractures, bone infections, tumors, and inflammatory diseases in the lower extremity. The goal is to provide clear, detailed images to aid in diagnosis and treatment planning.
Indications
- Persistent pain or swelling in the leg
- Suspected fractures or bone abnormalities
- Evaluation of bone infections (osteomyelitis)
- Detection of tumors or masses
- Assessing the extent of inflammatory diseases like arthritis
Preparation
- No special preparation is generally needed for a CT scan without contrast.
- Patients may be asked to remove metal objects such as jewelry or eyeglasses that could interfere with the imaging.
- Inform the healthcare provider of any existing health conditions or if you are pregnant.
Procedure Description
- The patient lies down on a motorized examination table.
- The table will move through a large, donut-shaped CT scanner.
- X-ray beams rotate around the lower extremity, capturing multiple images.
- The images are processed by a computer to create detailed cross-sectional pictures.
- The procedure is painless, and no anesthesia or sedation is required.
Duration
The procedure typically takes about 10-20 minutes.
Setting
This procedure is usually performed in a hospital radiology department or an outpatient imaging center.
Personnel
- Radiology technician: Performs the scan
- Radiologist: Interprets the images and provides a report
Risks and Complications
- Low-level radiation exposure, which is typically considered minimal and safe for most patients
- Possible discomfort from lying still during the procedure
- Rarely, allergic reactions to materials used on the skin may occur if preparations like disinfectants are applied
Benefits
- Non-invasive and painless
- Provides detailed images that can help in accurate diagnosis and effective treatment planning
- Quick and efficient with minimal preparation required
Recovery
- No recovery time needed; patients can return to normal activities immediately after the procedure.
- Follow-up appointments may be scheduled to discuss the results with a healthcare provider.
Alternatives
- X-rays: Less detailed, primarily used for simple fractures.
- MRI: No radiation but may be more expensive and takes longer.
- Ultrasound: Good for assessing soft tissue but less effective for bone imaging.
Patient Experience
- Patients may feel a little discomfort from having to remain still.
- The machine might make clicking or whirring sounds, but the procedure itself is painless.
- If feeling anxious, patients can talk to the technician, who can provide reassurance and explain each step of the process.