Routine scans
First trimester
- Dating / viability scan, 6 to 9 weeks: confirms the pregnancy is in the uterus, heartbeat, number of babies, and due date
- NT scan, 11w 0d to 13w 6d: screening for chromosomal conditions with a blood test, plus early anatomy
Second and third trimester
- Anomaly scan, 18 to 22 weeks: detailed check of the baby's organs, placenta, and fluid
- Growth scan, usually 28 to 36 weeks: baby's size, fluid, and position
The NT scan and anomaly scan have fixed windows. Book them as soon as your due date is known.
Additional scans some pregnancies need
- Doppler scan: blood flow to the baby, often advised for high blood pressure, diabetes, or a small baby
- Fetal echo: detailed heart scan, usually around 20 to 24 weeks, for selected pregnancies
- Cervical length: for women at risk of early labour
Your obstetrician decides which of these you need based on your history and earlier scans.
Before your scan
- Bring your previous scan reports and your doctor's referral
- Ask whether a full bladder is needed; this varies by scan and stage
- Form F under the PCPNDT Act is completed for every pregnancy scan
Nitara Scans is registered under the PCPNDT Act. The sex of the baby is not determined or disclosed under any circumstances.
Common questions
How many scans are done in a normal pregnancy?
Most low-risk pregnancies have four routine scans: dating, NT, anomaly, and growth. Your doctor may advise more if needed.
What happens if I miss the NT scan window?
The NT measurement cannot be done after 13 weeks 6 days. Your doctor can discuss other screening options.
When is the anomaly scan done?
Between 18 and 22 weeks, most often around 20 weeks.
Can you tell the sex of the baby?
No. Sex determination is prohibited under the PCPNDT Act and is not performed or disclosed at Nitara Scans.
Pregnancy scans in HSR Layout, Bengaluru
All scans at Nitara Scans and Diagnostics are personally performed by Dr. Nayana N Sunku, DMRD, DNB Radiology, Fetal Medicine Fellow, in a private setting at 24th A Cross Rd, Garden Layout, Sector 2, HSR Layout, Bengaluru, Karnataka 560102.