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Magnetic resonance (eg, proton) imaging, pelvis; without contrast material(s)

CPT4 code

Name of the Procedure:

Magnetic Resonance Imaging (MRI) of the Pelvis Without Contrast
Common name(s): Non-contrast Pelvic MRI


A Non-contrast Pelvic MRI is a diagnostic imaging procedure that uses a powerful magnetic field and radio waves to create detailed images of the pelvic region. Unlike other MRI scans, this procedure does not require the use of contrast material.


The procedure helps to diagnose and evaluate conditions affecting the pelvic region, including abnormalities in the reproductive organs, urinary bladder, and surrounding tissues. The primary goal is to provide detailed imagery to inform diagnosis and treatment plans without using contrast agents.


  • Unexplained pelvic pain
  • Abnormalities detected in primary imaging tests (e.g., ultrasound)
  • Evaluation of masses, cysts, or tumors
  • Assessment for infections or inflammatory conditions
  • Pre-surgical planning


  • Patients may be asked to fast for a few hours before the procedure.
  • Metal objects, including jewelry and electronic devices, should be removed to avoid interference with the MRI machine.
  • Patients will typically change into a hospital gown.
  • Any previous imaging studies should be brought along for comparison.

Procedure Description

  1. The patient lies down on a movable table.
  2. The table slides into the MRI machine, a large tube-shaped magnet.
  3. The technologist may provide earplugs or headphones to minimize noise from the machine during the scan.
  4. The patient must remain still to ensure clear images are captured.
  5. The MRI machine takes a series of images of the pelvic region without the need for contrast material.


The procedure typically takes about 30–60 minutes.


This procedure is usually conducted in a hospital radiology department or an outpatient imaging center.


  • Radiologist
  • MRI Technologist
  • Occasionally a nurse or technician for patient assistance

Risks and Complications

  • Very low risk since no radiation is involved.
  • Rare discomfort from lying still or from the closed space of the MRI machine (claustrophobia).
  • Minimal risk of issues with implanted medical devices (patients should notify staff of any implants).


  • Non-invasive with no use of ionizing radiation.
  • High-resolution images of pelvic structures.
  • Helps in early and accurate diagnosis.


  • No downtime; patients can usually resume normal activities immediately.
  • Follow-up appointments may be scheduled to discuss results with the healthcare provider.


  • Pelvic ultrasound: Less detail but useful for certain conditions.
  • CT scan: Uses ionizing radiation and less detailed than MRI for soft tissue evaluation.
  • Contrast-enhanced MRI: Provides more detail but requires contrast material.

Patient Experience

During the MRI:

  • May feel warmth in the pelvic area.
  • Noise from the machine, often managed with ear protection. After the MRI:
  • Usually no pain post-procedure and immediate resumption of daily activities.
  • Occasional follow-up if more imaging or further tests are needed.

    Pain management measures are not typically necessary due to the non-invasive nature of the procedure. Some patients may require mild sedation if they have significant claustrophobia.

Medical Policies and Guidelines for Magnetic resonance (eg, proton) imaging, pelvis; without contrast material(s)

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