MRI Defecography MRI Defecography Protocol (Basic).

 MRI Defecography (also called MR Defecography or Dynamic Pelvic Floor MRI) is a specialized MRI study used to evaluate the structure and function of the pelvic floor muscles during defecation. It's particularly useful for patients with chronic constipation, incontinence, pelvic organ prolapse, or a sense of incomplete evacuation.

🔍 Purpose

MRI Defecography helps assess:

• Pelvic organ prolapse (rectocele, cystocele, enterocele)

• Rectal intussusception

• Anismus (failure of anal sphincter to relax)

• Pelvic floor dyssynergia

• Perineal descent

🧪 Procedure Overview

1. Patient Preparation:

   • Mild laxatives may be used before the exam.

   • Patients are often asked to avoid eating for a few hours prior.

2. Intraluminal Contrast:

   • The rectum is filled with ultrasound gel or jelly to simulate stool.

   • Sometimes, the vagina or bladder is also filled for better visualization of all compartments.

3. MRI Imaging:

   • Images are acquired at rest, squeeze, strain, and defecation phases.

   • A true sagittal plane is primarily used.

   • Additional axial and coronal planes may be used for anatomical detail.

✅ Advantages

• Non-invasive

• No ionizing radiation

• Detailed soft tissue contrast

• Multi-compartment evaluation (anterior, middle, posterior pelvic compartments)

📊 Typical MRI Sequences Used

• T2-weighted fast spin echo (static anatomy)

• Balanced steady-state free precession (for dynamic phases)

• Cine imaging during defecation for motion assessment

🩺 Clinical Indications

• Suspected complex pelvic floor disorders

• Failed conventional treatment for constipation or incontinence

• Prior to surgical planning for pelvic floor repair

📷 MRI Defecography Protocol (Basic)

Sequence	Plane	Purpose
T2 FSE	Axial/Sagittal	Static soft tissue anatomy
Balanced SSFP (TrueFISP/FIESTA)	Sagittal	Dynamic imaging at rest, squeeze, strain, defecation
Cine MR	Sagittal	Video loop for functional assessment
Optional T1	Axial	For detecting fat or hemorrhage

📊 Infographic Idea for Radiographic Gyan

Title: "MRI Defecography: A 360° Look at the Pelvic Floor"

Sections:

1. What is MRI Defecography?

   • Purpose and advantages

2. How is it done?

   • Step-by-step with icons (gel injection, squeeze, strain, defecate)

3. Anatomical Areas Assessed

   • Rectum, bladder, uterus/vagina

4. Common Findings

   • Rectocele, intussusception, enterocele, perineal descent

5. When is it needed?

   • Symptoms that indicate the scan