TIFFA Scan – Understanding Targeted Imaging for Fetal Anomalies

The TIFFA Scan (Targeted Imaging for Fetal Anomalies) is a comprehensive ultrasound examination performed during the second trimester of pregnancy. Also known as the Anomaly Scan, Level II Ultrasound, or Mid-Trimester Scan, this detailed assessment evaluates the baby's development, organ structure, placental position, and amniotic fluid levels.

What is a TIFFA Scan?

The TIFFA scan is a non-invasive, painless, and safe ultrasound procedure that uses high-resolution imaging technology to create detailed images of the fetus. This examination provides a thorough evaluation of fetal anatomy and the intrauterine environment.

Key Characteristics:

• Non-invasive and painless procedure

• Safe for both mother and baby

• Uses sound waves (no radiation exposure)

• Typically performed between 18 and 22 weeks of pregnancy

• Optimal timing: 19 to 20 weeks of gestation

At this gestational age, the fetus is sufficiently developed for detailed organ evaluation, and adequate amniotic fluid volume allows for clear imaging.

Purpose of the TIFFA Scan

The primary objective of the TIFFA scan is to detect structural abnormalities and assess fetal development. The scan can identify:

• Congenital heart defects

• Neural tube defects such as spina bifida

• Skeletal abnormalities and bone structure issues

• Facial anomalies, including cleft lip and cleft palate

• Abdominal organ abnormalities

• Brain and spinal cord development issues

• Soft markers that may suggest chromosomal conditions

What Does the TIFFA Scan Examine?

The scan provides a comprehensive head-to-toe assessment of the fetus, including:

Neurological System

• Brain structure and ventricles

• Spine and spinal cord

• Skull formation

Facial Features

• Eyes, nose, and lips

• Detection of cleft lip or palate

• Facial profile and contours

Cardiovascular System

• Heart chambers (atria and ventricles)

• Heart valves and function

• Major blood vessels

Abdominal Organs

• Stomach

• Kidneys and bladder

• Liver and intestines

Musculoskeletal System

• Arms, legs, hands, and feet

• Fingers and toes

• Bone structure and spine

• Ribcage

Pregnancy Environment

• Placenta location and appearance

• Umbilical cord structure and insertion

• Amniotic fluid volume

When Should You Get a TIFFA Scan?

Recommended Timing: 18 to 22 weeks of pregnancy (ideally between 19 and 20 weeks)

The scan is recommended for all pregnant women as part of routine antenatal care. However, it may be particularly important if you have:

• Advanced maternal age (35 years or older)

• Family history of congenital anomalies

• Previous pregnancy with fetal abnormalities

• Pre-existing diabetes or hypertension

• Twin or multiple pregnancy

• Abnormal findings in first-trimester screening

How is the TIFFA Scan Performed?

Preparation:

• No special preparation is required in most cases

• Some centers may request a moderately full bladder for better imaging

• Wear comfortable, two-piece clothing for easy access to the abdomen

• Bring previous ultrasound reports and antenatal records

Procedure:

1. You will lie comfortably on an examination table

2. A clear ultrasound gel is applied to your abdomen to facilitate sound wave transmission

3. The sonographer or radiologist moves the ultrasound transducer over your abdomen

4. Images are captured, and measurements are recorded

5. The examination is conducted systematically to evaluate all fetal structures

Duration:

The scan typically takes 30 to 60 minutes, depending on fetal position and image clarity. If the baby is not in an optimal position, you may be asked to walk briefly or consume a light snack to encourage movement.

Understanding TIFFA Scan Results

After the examination, the doctor reviews all images and measurements to prepare a structured report.

Normal Results:

When findings are normal, it indicates that fetal development appears appropriate for gestational age. All major organs and structures are developing as expected.

Abnormal Findings:

If an abnormality or area of concern is detected:

• The findings will be discussed with you in detail

• Further diagnostic tests may be recommended (such as amniocentesis, genetic testing, or fetal MRI)

• Follow-up scans may be scheduled

• Referral to a fetal medicine specialist or perinatologist may be advised

• Counseling and support will be provided

The TIFFA scan report includes:

• Fetal growth parameters and measurements

• Detailed organ and structure findings

• Placental position and characteristics

• Amniotic fluid level assessment

• Any identified abnormalities or concerns

Important Considerations

Detection Limitations: While the TIFFA scan can detect many major structural abnormalities, it is not 100% accurate. Some minor conditions, such as small heart defects, finger or toe variations, and certain late-onset abnormalities, may not be visible during the scan. Factors such as maternal obesity, fetal position, and amniotic fluid levels can affect image quality.

Chromosomal Abnormalities: The TIFFA scan detects structural abnormalities and can identify soft markers of chromosomal conditions, but it does not definitively exclude chromosomal or genetic abnormalities. Additional genetic testing may be required if concerns are identified.

Safety: Multiple scientific studies confirm that ultrasound examinations are safe during pregnancy. The TIFFA scan uses sound waves rather than radiation, posing minimal risk to mother and baby.

Next Steps After the Scan

The TIFFA scan provides essential information that supports informed decision-making throughout pregnancy. If abnormalities are detected, healthcare teams work closely with families to:

• Explain findings and their implications

• Discuss available options and interventions

• Plan appropriate prenatal care and delivery management

• Provide psychological support and counseling

• Connect families with specialist care when needed

In many cases, minor abnormalities resolve on their own or can be treated after birth. For more significant concerns, early detection allows medical teams to prepare comprehensive care plans for both mother and baby.

Frequently Asked Questions (FAQs)

1. What is the ideal time to get a TIFFA scan? The optimal time for a TIFFA scan is between 18 and 22 weeks of pregnancy, with 19 to 20 weeks being ideal. At this stage, the fetus is large enough for detailed examination, and there is sufficient amniotic fluid for clear visualization. After 24 to 25 weeks, some structures may become difficult to assess due to fetal size and position.

2. Is the TIFFA scan safe for my baby? Yes, the TIFFA scan is completely safe. It uses ultrasound technology (sound waves) rather than radiation, making it safe for both mother and baby. Extensive research confirms that ultrasound examinations pose no harm to the fetus, embryo, or pregnant woman, even when performed multiple times during pregnancy.

3. How long does the TIFFA scan take? The scan typically takes 20 to 45 minutes. However, the duration may vary depending on the baby's position, image clarity, and whether detailed views of all structures can be obtained. If the fetus is not in an optimal position, the sonographer may ask you to walk briefly or have a light snack to encourage fetal movement.

4. Can the TIFFA scan detect all birth defects? The TIFFA scan is approximately 90% accurate in detecting structural abnormalities. However, it cannot detect all birth defects. Some minor conditions, such as small ventricular septal defects (holes in the heart), cleft palate, finger and toe abnormalities, and certain late-onset conditions affecting the brain, intestines, or kidneys, may not be visible during the scan.