This page covers imaging in pregnancy thesis topics across first-trimester ultrasonography and early pregnancy assessment, foetal biometry and amniotic fluid imaging, obstetric Doppler and foetal surveillance, placental and cervical imaging, and foetal anatomy, congenital anomalies and multiple-pregnancy imaging for MD Obstetrics and Gynaecology candidates. The emphasis is on pregnancy imaging research topics that can be completed within one thesis period using clinically indicated ultrasonography, Doppler, foetal biometry, cervical assessment, anomaly scans, delivery records and immediate postnatal findings already available in obstetric practice. A shortlisted question should then be converted into a reproducible obstetrics and gynaecology imaging protocol and a submission-ready obstetrics and gynaecology imaging synopsis.
Last reviewed and updated: September 2026 · 2026–27 admissions
First-Trimester Ultrasonography and Early Pregnancy Assessment
- Diagnostic Accuracy of Transvaginal Ultrasonography for Determining Pregnancy Viability in Women Presenting With First-Trimester Bleeding: A Prospective Observational Study
- Correlation of Mean Gestational Sac Diameter and Crown–Rump Length With Early Pregnancy Outcome in Women Undergoing First-Trimester Ultrasonography: A Prospective Observational Study
- Association of First-Trimester Foetal Heart Rate With Immediate Pregnancy Outcome in Singleton Pregnancies: A Prospective Observational Study
- Diagnostic Accuracy of Transvaginal Ultrasonography for Differentiating Viable Intrauterine Pregnancy, Early Pregnancy Loss, and Pregnancy of Unknown Location: A Prospective Study
- Correlation of Ultrasonographic Subchorionic Hematoma Size and Location With Pregnancy Outcome in Women With First-Trimester Bleeding: A Prospective Observational Study
- Association of Yolk Sac Diameter and Morphology With Early Pregnancy Viability in Singleton Pregnancies: A Prospective Observational Study
- Comparison of Transabdominal and Transvaginal Ultrasonography for Assessment of Early Pregnancy Viability in Women With First-Trimester Bleeding: A Comparative Cross-Sectional Study
- Correlation of Crown–Rump Length-Based Gestational Age With Menstrual Dating in Women With Spontaneous Conception: A Cross-Sectional Analytical Study
- Ultrasonographic Profile of First-Trimester Pregnancy Loss and Its Association With Clinical Presentation: A Cross-Sectional Observational Study
- Diagnostic Accuracy of Transvaginal Ultrasonography for Detection of Ectopic Pregnancy in Haemodynamically Stable Women With Suspected Ectopic Pregnancy: A Prospective Study
- Correlation of Adnexal Mass Characteristics on Transvaginal Ultrasonography With Operative Findings in Surgically Managed Ectopic Pregnancy: A Prospective Observational Study
- Association of Ultrasonographic Hemoperitoneum With Clinical Severity and Operative Findings in Ectopic Pregnancy: A Cross-Sectional Analytical Study
- Sonographic Characteristics of Caesarean Scar Pregnancy and Their Correlation With Clinical Presentation and Initial Management: A Retrospective Observational Study
- Ultrasonographic Characteristics of Molar Pregnancy and Their Correlation With Pre-Evacuation Clinical and Laboratory Features: A Cross-Sectional Analytical Study
- Association of First-Trimester Uterine Artery Doppler Indices With Development of Hypertensive Disorders of Pregnancy: A Prospective Observational Study
- Correlation of First-Trimester Nuchal Translucency Measurement With Major Structural Foetal Abnormalities Detected During Antenatal Imaging: A Prospective Observational Study
- Diagnostic Yield of First-Trimester Ultrasonography for Detection of Major Foetal Structural Abnormalities in a Tertiary Care Obstetric Population: A Cross-Sectional Observational Study
- Comparison of Gestational Age Estimation by Crown–Rump Length and Last Menstrual Period in Women With Irregular Menstrual Cycles: A Cross-Sectional Analytical Study
- Ultrasonographic Assessment of Chorionicity and Amnionicity in Twin Pregnancies and Correlation With Second-Trimester Imaging Findings: A Prospective Observational Study
- Association of First-Trimester Ultrasonographic Uterine Fibroid Characteristics With Placental Location and Immediate Obstetric Complications: A Prospective Observational Study
Foetal Biometry, Growth and Amniotic Fluid Imaging
- Correlation of Ultrasonographic Estimated Foetal Weight With Actual Birth Weight in Term Singleton Pregnancies: A Prospective Observational Study
- Diagnostic Accuracy of Ultrasonographic Estimated Foetal Weight for Detection of Low Birth Weight in Singleton Pregnancies: A Prospective Study
- Diagnostic Accuracy of Ultrasonographic Estimated Foetal Weight for Detection of Foetal Macrosomia in Term Pregnancies: A Prospective Study
- Comparison of Hadlock Formula-Based Ultrasonographic Estimated Foetal Weight With Actual Birth Weight Across Different Maternal Body Mass Index Categories: A Comparative Cross-Sectional Study
- Association of Disproportionate Foetal Biometric Parameters With Small-for-Gestational-Age Birth in Singleton Pregnancies: A Prospective Observational Study
- Correlation of Foetal Abdominal Circumference With Birth Weight in Pregnancies Suspected of Foetal Growth Restriction: A Prospective Observational Study
- Diagnostic Accuracy of Third-Trimester Ultrasonography for Detection of Foetal Growth Restriction Using Estimated Foetal Weight and Abdominal Circumference Percentiles: A Prospective Study
- Correlation of Serial Clinically Indicated Foetal Growth Measurements With Immediate Perinatal Outcome in Pregnancies With Suspected Foetal Growth Restriction: A Prospective Observational Study
- Association of Maternal Hypertensive Disorders With Ultrasonographic Patterns of Foetal Growth Restriction: A Comparative Cross-Sectional Study
- Comparison of Foetal Biometric Parameters in Pregnancies With and Without Gestational Diabetes Mellitus: A Comparative Cross-Sectional Study
- Correlation of Third-Trimester Foetal Abdominal Circumference With Maternal Glycaemic Parameters in Gestational Diabetes Mellitus: A Cross-Sectional Analytical Study
- Comparison of Amniotic Fluid Index and Single Deepest Vertical Pocket for Assessment of Amniotic Fluid Volume in Singleton Pregnancies: A Comparative Cross-Sectional Study
- Diagnostic Accuracy of Amniotic Fluid Index for Identifying Oligohydramnios Associated With Adverse Immediate Perinatal Outcome: A Prospective Study
- Association of Oligohydramnios Detected by Ultrasonography With Mode of Delivery and Immediate Neonatal Outcome at Term: A Prospective Observational Study
- Association of Polyhydramnios Severity on Ultrasonography With Maternal Disorders, Foetal Anomalies, and Immediate Perinatal Outcome: A Cross-Sectional Analytical Study
- Correlation of Ultrasonographic Amniotic Fluid Volume With Birth Weight in Term Singleton Pregnancies: A Cross-Sectional Analytical Study
- Ultrasonographic Profile of Late-Onset Foetal Growth Restriction and Its Association With Intrapartum Foetal Compromise: A Prospective Observational Study
- Comparison of Foetal Growth Parameters Between Anaemic and Non-Anaemic Pregnant Women in the Third Trimester: A Comparative Cross-Sectional Study
- Association of Maternal Body Mass Index With Ultrasonographic Foetal Biometry and Estimated Foetal Weight at Term: A Cross-Sectional Analytical Study
- Accuracy of Ultrasonographic Foetal Biometry for Gestational Age Estimation in Women Presenting With Uncertain Menstrual Dates in Late Pregnancy: A Cross-Sectional Diagnostic Study
Obstetric Doppler and Foetal Surveillance Imaging
- Correlation of Umbilical Artery Doppler Indices With Immediate Perinatal Outcome in Pregnancies With Foetal Growth Restriction: A Prospective Observational Study
- Association of Abnormal Middle Cerebral Artery Doppler With Intrapartum Foetal Compromise in Late-Onset Foetal Growth Restriction: A Prospective Observational Study
- Diagnostic Performance of Cerebroplacental Ratio for Prediction of Adverse Immediate Perinatal Outcome in Small-for-Gestational-Age Foetuses: A Prospective Study
- Comparison of Cerebroplacental Ratio and Umbilical Artery Doppler for Prediction of Immediate Perinatal Outcome in Foetal Growth Restriction: A Comparative Prospective Study
- Correlation of Uterine Artery Doppler Resistance Indices With Severity of Pre-eclampsia: A Cross-Sectional Analytical Study
- Association of Abnormal Uterine Artery Doppler With Foetal Growth Restriction in Women With Hypertensive Disorders of Pregnancy: A Prospective Observational Study
- Comparison of Umbilical Artery Doppler Findings in Preeclamptic and Normotensive Pregnancies: A Comparative Cross-Sectional Study
- Correlation of Umbilical Artery Doppler Abnormalities With Placental Histopathological Findings in Pregnancies With Foetal Growth Restriction: A Prospective Observational Study
- Association of Middle Cerebral Artery Peak Systolic Velocity With Severity of Foetal Anaemia in Rh-Isoimmunized Pregnancies Undergoing Clinically Indicated Evaluation: A Prospective Observational Study
- Diagnostic Accuracy of Middle Cerebral Artery Peak Systolic Velocity for Detection of Moderate-to-Severe Foetal Anaemia in At-Risk Pregnancies: A Prospective Study
- Correlation of Ductus Venosus Doppler Abnormalities With Immediate Perinatal Outcome in Severe Early-Onset Foetal Growth Restriction: A Prospective Observational Study
- Association of Abnormal Cerebroplacental Ratio at Term With Caesarean Delivery for Foetal Distress: A Prospective Observational Study
- Diagnostic Accuracy of Cerebroplacental Ratio for Prediction of Neonatal Intensive Care Unit Admission in High-Risk Term Pregnancies: A Prospective Study
- Comparison of Doppler Findings in Early-Onset and Late-Onset Foetal Growth Restriction: A Comparative Cross-Sectional Study
- Correlation of Umbilical Artery Doppler Indices With Cardiotocographic Findings in High-Risk Pregnancies: A Cross-Sectional Analytical Study
- Association of Abnormal Obstetric Doppler With Meconium-Stained Liquor and Low Apgar Score in High-Risk Term Pregnancies: A Prospective Observational Study
- Doppler Profile of Pregnancies Complicated by Gestational Hypertension and Its Association With Immediate Perinatal Outcome: A Prospective Observational Study
- Comparison of Umbilical Artery and Middle Cerebral Artery Doppler Indices in Appropriate-for-Gestational-Age and Small-for-Gestational-Age Foetuses: A Comparative Cross-Sectional Study
- Correlation of Cerebroplacental Ratio With Birth Weight Percentile in Singleton Pregnancies With Suspected Foetal Growth Restriction: A Cross-Sectional Analytical Study
- Association of Absent or Reversed End-Diastolic Flow in the Umbilical Artery With Mode of Delivery and Immediate Neonatal Morbidity: A Retrospective Observational Study
Placental, Cervical and Maternal Obstetric Imaging
- Diagnostic Accuracy of Ultrasonography for Placenta Previa Using Intraoperative Findings as Reference Standard: A Prospective Study
- Correlation of Transvaginal Ultrasonographic Placental Edge-to-Internal Os Distance With Mode of Delivery in Women With Low-Lying Placenta: A Prospective Observational Study
- Diagnostic Accuracy of Ultrasonographic Signs for Placenta Accreta Spectrum in Women With Placenta Previa and Previous Caesarean Delivery: A Prospective Study
- Correlation of Individual Ultrasonographic Features of Placenta Accreta Spectrum With Intraoperative Surgical Findings: A Prospective Observational Study
- Association of Number of Previous Caesarean Deliveries With Ultrasonographic Severity Features of Placenta Accreta Spectrum: A Cross-Sectional Analytical Study
- Comparison of Transabdominal and Transvaginal Ultrasonography for Localisation of Low-Lying Placenta in the Third Trimester: A Comparative Cross-Sectional Study
- Association of Placental Thickness on Ultrasonography With Foetal Growth in Singleton Pregnancies: A Cross-Sectional Analytical Study
- Correlation of Placental Grading on Ultrasonography With Gestational Age and Immediate Perinatal Outcome: A Cross-Sectional Analytical Study
- Association of Placental Location With Foetal Malpresentation at Term: A Cross-Sectional Observational Study
- Ultrasonographic Characteristics of Placental Abruption and Their Correlation With Clinical and Intraoperative Findings: A Prospective Observational Study
- Diagnostic Accuracy of Transvaginal Cervical Length for Prediction of Preterm Birth During the Same Pregnancy in Symptomatic Women With Threatened Preterm Labour: A Prospective Study
- Correlation of Transvaginal Cervical Length With Interval to Delivery in Women Presenting With Threatened Preterm Labour: A Prospective Observational Study
- Comparison of Transabdominal and Transvaginal Ultrasonography for Measurement of Cervical Length in Pregnant Women: A Comparative Cross-Sectional Study
- Association of Short Cervical Length With Preterm Delivery in Twin Pregnancies: A Prospective Observational Study
- Correlation of Cervical Length With Bishop Score in Women Undergoing Induction of Labour at Term: A Cross-Sectional Analytical Study
- Diagnostic Accuracy of Pre-Induction Transvaginal Cervical Length for Prediction of Successful Vaginal Delivery Following Induction of Labour: A Prospective Study
- Ultrasonographic Assessment of Lower Uterine Segment Thickness in Women With Previous Caesarean Delivery and Correlation With Intraoperative Scar Findings: A Prospective Observational Study
- Correlation of Lower Uterine Segment Thickness With Uterine Scar Dehiscence at Repeat Caesarean Delivery: A Prospective Observational Study
- Ultrasonographic Profile of Adnexal Masses Detected During Pregnancy and Correlation With Operative or Histopathological Findings When Clinically Indicated: A Retrospective Observational Study
- Sonographic Characteristics of Uterine Fibroids in Pregnancy and Their Association With Malpresentation, Placental Location, and Mode of Delivery: A Prospective Observational Study
Foetal Anatomy, Congenital Anomalies and Multiple-Pregnancy Imaging
- Diagnostic Yield of Routine Second-Trimester Anomaly Ultrasonography for Detection of Major Structural Foetal Abnormalities in a Tertiary Care Centre: A Cross-Sectional Observational Study
- Spectrum of Foetal Central Nervous System Anomalies Detected on Prenatal Ultrasonography and Their Association With Gestational Age at Diagnosis: A Retrospective Observational Study
- Correlation of Prenatal Ultrasonographic Diagnosis of Major Central Nervous System Anomalies With Postnatal Imaging or Clinical Findings: A Diagnostic Accuracy Study
- Diagnostic Accuracy of Prenatal Ultrasonography for Detection of Major Renal and Urinary Tract Anomalies Using Postnatal Evaluation as Reference Standard: A Prospective Study
- Prenatal Ultrasonographic Profile of Foetal Gastrointestinal Anomalies and Correlation With Immediate Postnatal Findings: A Prospective Observational Study
- Diagnostic Accuracy of Four-Chamber and Outflow-Tract Views During Routine Obstetric Ultrasonography for Detection of Major Congenital Heart Disease: A Prospective Study
- Correlation of Prenatal Foetal Echocardiographic Findings With Immediate Postnatal Cardiac Evaluation in Pregnancies With Suspected Congenital Heart Disease: A Prospective Observational Study
- Spectrum of Sonographic Soft Markers Identified During Second-Trimester Anomaly Scanning and Their Association With Major Structural Abnormalities: A Cross-Sectional Analytical Study
- Association of Increased Nuchal Translucency With Structural Foetal Abnormalities Detected on Subsequent Prenatal Imaging: A Prospective Observational Study
- Diagnostic Contribution of Targeted Neurosonography in Foetuses With Suspected Central Nervous System Abnormalities on Routine Anomaly Scan: A Prospective Observational Study
- Ultrasonographic Assessment of Chorionicity in Twin Pregnancies and Correlation With Placental Examination at Delivery: A Diagnostic Accuracy Study
- Comparison of Foetal Growth Discordance and Immediate Perinatal Outcome in Monochorionic and Dichorionic Twin Pregnancies: A Comparative Prospective Study
- Correlation of Ultrasonographic Intertwin Estimated Foetal Weight Discordance With Actual Birth Weight Discordance in Twin Pregnancies: A Prospective Observational Study
- Association of Abnormal Umbilical Artery Doppler With Immediate Perinatal Outcome in Twin Pregnancies With Selective Foetal Growth Restriction: A Prospective Observational Study
- Ultrasonographic Profile of Monochorionic Twin Pregnancies Complicated by Twin-to-Twin Transfusion Syndrome at Presentation: A Cross-Sectional Observational Study
- Correlation of Amniotic Fluid Discordance With Doppler Abnormalities in Monochorionic Diamniotic Twin Pregnancies: A Cross-Sectional Analytical Study
- Diagnostic Accuracy of Prenatal Ultrasonography for Determining Foetal Presentation at Term Using Clinical Examination as Comparator and Delivery Findings as Reference Standard: A Prospective Study
- Correlation of Ultrasonographic Foetal Head Position in Labour With Mode of Delivery in Nulliparous Women: A Prospective Observational Study
- Diagnostic Accuracy of Intrapartum Transperineal Ultrasonography for Assessment of Foetal Head Position Compared With Vaginal Examination: A Prospective Study
- Correlation of Angle of Progression on Intrapartum Transperineal Ultrasonography With Mode of Delivery in Women With Prolonged Second Stage of Labour: A Prospective Observational Study
Not the obstetrics and gynaecology subspeciality you need? Imaging in pregnancy is one section of our full obstetrics and gynaecology collection — the hub page lists every subspeciality, each with its own free topic list. Updated September 2026.
All Obstetrics and Gynaecology Topics →
📌 Updated for 2026–2027 MD Obstetrics and Gynaecology Imaging in Pregnancy admissions
The research framework was reviewed for early-pregnancy ultrasonography, foetal growth assessment, amniotic fluid measurement, obstetric Doppler, placental imaging, cervical assessment, congenital anomalies and intrapartum ultrasound.
- Most projects can be completed with routine transabdominal or transvaginal ultrasonography, foetal biometry, amniotic fluid assessment, Doppler, anomaly scanning and clinically indicated postnatal or operative reference findings.
- Research-only additional scans, magnetic resonance imaging, contrast administration, radiation exposure, invasive prenatal testing or additional venepuncture are not required unless clinically justified and specifically approved.
- Publication potential is strongest when the index scan is recorded before the final diagnosis is known, measurement technique is standardised, gestational age and scan-to-outcome interval are fixed, and technically limited examinations are separated from true negative findings.
Generate a protocol from any topic above
Select Generate Protocol → beside any title in the list above and receive a submission-ready document built around that topic, containing all eighteen components:
- Introduction / Synopsis
- Research Question
- Aim of the Study
- Primary Objective
- Secondary Objectives
- Materials and Methods
- Inclusion Criteria
- Exclusion Criteria
- Sample Size Calculation
- Methodology
- Statistical Analysis
- Ethical Considerations
- Review of Literature
- References
- Gantt Chart / Study Timeline
- Patient Information Sheet
- Consent Form
- Data Collection Form
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Alongside imaging in pregnancy protocols and synopses, support is also available for departmental presentations, journal club presentations, ethics committee presentations, and posters and oral presentations for medical conferences — for postgraduate residents, board trainees and research scholars across India and the GCC. Prepared by a practising doctor with long experience in medical publishing and thesis supervision.
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Imaging in pregnancy research outside India
The topics above work as research questions anywhere — what changes is the document the institution expects, and who approves it before data collection begins. The Gulf equivalent of an Indian synopsis is the imaging in pregnancy research proposal submitted to an institutional review board, and it ordinarily carries three sections an Indian synopsis does not: a Gantt chart, a budget and resources section, and a Declaration of Helsinki statement.
Board and residency programmes — country by country
Saudi Arabia — SCFHS and the Saudi Board. Residency and fellowship training under the Saudi Commission for Health Specialties includes a research project with a set timeline, and the imaging in pregnancy research proposal is the document prepared at the outset and cleared by the institutional review board before recruitment starts.
United Arab Emirates — DHA, DOH Abu Dhabi and MOHAP. Residents training in Dubai, Abu Dhabi and the northern emirates prepare an imaging in pregnancy research protocol for their programme and submit it for institutional review board approval before any data are collected.
Qatar — DHP (formerly QCHP) and Hamad Medical Corporation. A imaging in pregnancy IRB proposal is reviewed before recruitment, with the ethics section written to the institution's own template rather than a generic one.
Bahrain — NHRA. Trainees turning imaging in pregnancy research topics into a project need the proposal cleared by their institutional research and ethics committee before fieldwork begins.
Oman — OMSB. Residency programmes under the Oman Medical Specialty Board include a research component, and the imaging in pregnancy research proposal is the document assessed at the start of it.
Kuwait — KIMS. A imaging in pregnancy study protocol goes to the institutional committee for approval before the project begins.
Arab Board programmes across the region. The Arab Board carries its own research requirement irrespective of the host country, and the imaging in pregnancy proposal follows the same structure throughout.
Postgraduate degrees — Malaysia, the Gulf and beyond
Malaysia — MMed, the National Medical Research Register and MREC. A imaging in pregnancy dissertation proposal for a Master of Medicine programme carried out in a Ministry of Health facility must be registered on the NMRR and approved by the Medical Research and Ethics Committee before the study begins, and the guidance asks for submission four to six months ahead of data collection. Every investigator on the study team registers on the NMRR as well, so the methodology, ethics and team sections are written in far more detail than an Indian synopsis requires.
PhD and Master's candidates elsewhere. University programmes generally require a full imaging in pregnancy research proposal of roughly 6,000 to 10,000 words, with an extended literature review, a theoretical framework and a detailed methodology chapter.
PhD and MMed proposals are written individually by a medical doctor and revised until the supervisor accepts them. They are not produced by the automated protocol generator.
Enquire about an imaging in pregnancy PhD or MMed proposal →
🔥 Trending research areas in Imaging in Pregnancy for 2026–27
Current obstetric-imaging research increasingly emphasises standardised terminology, reproducible acquisition and objective measurements that improve communication between imaging and clinical care.
- Standardised first-trimester ultrasound terminology: newer consensus terminology for intrauterine pregnancy, ectopic pregnancy, pregnancy of unknown location and embryonic cardiac activity creates practical research opportunities in diagnostic agreement and early-pregnancy reporting.
- Structured placenta accreta spectrum assessment: standardised reporting of placental lacunae, clear-zone loss, myometrial thinning, bridging vessels and uterovesical hypervascularity is increasingly important for reproducible prenatal risk assessment.
- Intrapartum transperineal ultrasonography: objective measurements such as foetal head position, angle of progression and head-perineum distance are being studied as complements to vaginal examination for assessing labour progress and operative-delivery risk.
- Integrated Doppler surveillance in foetal growth restriction: umbilical artery, middle cerebral artery, cerebroplacental ratio and ductus venosus assessment remain central to research on severity stratification and immediate perinatal risk when gestational age and disease phenotype are clearly defined.
Protocol and synopsis guidance
What an Imaging in Pregnancy protocol must contain
An imaging in pregnancy protocol must define the gestational-age window, clinical indication, ultrasound approach, equipment or preset where relevant, exact measurement technique, image-acquisition plane, operator or reader arrangement, index-test definition and the reference outcome. A first-trimester viability study, foetal growth study, placenta accreta spectrum study and intrapartum ultrasound study require different reference standards and should not share vague terms such as “abnormal scan” or “adverse outcome” without operational definitions.
The index scan must remain independent of the final outcome. Early-pregnancy viability, foetal anomaly, placental invasion and intrapartum head position may become clearer later through repeat imaging, surgery, delivery or postnatal assessment. The original scan classification should be preserved rather than retrospectively rewritten after the final diagnosis becomes known.
Timing and technique are part of the measurement. Foetal biometry, amniotic fluid, cervical length, Doppler indices and lower uterine segment thickness change with gestation and can vary with acquisition technique. The protocol should therefore prespecify maternal position where relevant, measurement plane, caliper placement, number of measurements, averaging rule and the acceptable interval between the index scan and the reference outcome.
Imaging in Pregnancy synopsis versus Imaging in Pregnancy protocol
The synopsis is the concise institutional submission describing the imaging question, study population, design and principal endpoint. The full protocol must convert those aims into reproducible rules for gestational age, scan indication, acquisition technique, measurement definitions, reader blinding, diagnostic thresholds, repeat-scan handling, reference standards and the exact time window between imaging and outcome assessment.
For diagnostic studies, the protocol should distinguish technically limited examinations from true negative scans. For comparative imaging studies, it should state whether both methods are performed in the same pregnancy and whether readers are blinded to the alternative method. For foetal growth or Doppler studies, it should define whether the outcome is birth weight, small-for-gestational-age status, intrapartum compromise or another independent clinical endpoint.
Sample size and statistical analysis
Sample size should follow the primary endpoint. A diagnostic-accuracy study needs enough pregnancies with and without the prespecified reference diagnosis; a correlation study of estimated foetal weight and birth weight needs enough paired observations; and a Doppler prediction study needs enough adverse outcomes to estimate performance with useful precision. Rare congenital anomalies or severe placental disorders may require retrospective or multicentre recruitment when local case volume is low.
Repeated scans and multiple fetuses create correlated data. Several growth scans from one pregnancy are not independent participants, and twin fetuses share the same maternal pregnancy. Likewise, several lesions or anomalies in one fetus should not be counted as unrelated cases when the research question is pregnancy-level diagnostic performance.
Correlation does not establish agreement between two measurement methods. Estimated foetal weight and birth weight, transabdominal and transvaginal cervical length, or two observers measuring the same parameter may require agreement methods in addition to correlation. Sensitivity and specificity require an appropriate independent reference standard, and thresholds derived from the same local dataset should not be presented as universally validated cut-offs.
Frequently Asked Questions – Imaging In Pregnancy Thesis Topics (2026–27)
1. How do I choose a feasible Imaging in Pregnancy thesis topic for 2026 admission?
Choose a question around an examination that is already performed frequently in the obstetric unit and has a reference outcome that can be obtained within the thesis period. Foetal biometry, amniotic fluid, obstetric Doppler, cervical length, placental location, first-trimester assessment and intrapartum ultrasound can be practical when case volume is adequate. Confirm the gestational-age window, scan-to-outcome interval and availability of delivery, operative or postnatal reference data before registration.
2. Which study designs are accepted for Imaging in Pregnancy research?
Suitable designs include descriptive and analytical cross-sectional studies, comparative studies, diagnostic-accuracy studies, agreement or reliability studies, prospective or retrospective cohorts and short-term prediction studies. The design should match the timing of the question. A single scan with concurrent maternal characteristics can be cross-sectional, whereas an ultrasound measurement followed by delivery, surgery or postnatal confirmation is longitudinal even when follow-up is short.
3. What should I settle with my guide before registering an Imaging in Pregnancy topic?
Settle the gestational-age range, ultrasound approach, measurement technique, operator or reader arrangement, index-test definition, diagnostic threshold, reference standard, scan-to-outcome interval and primary endpoint. Also decide how technically limited examinations, repeat scans, multiple pregnancy and clinically indicated intervention between the scan and outcome will be handled.
4. Should repeated ultrasound examinations in the same pregnancy be counted as separate cases?
Not automatically. If the research question concerns serial growth or Doppler change, repeated examinations can be analysed as repeated observations from the same pregnancy using an appropriate longitudinal method. If the question concerns diagnostic performance at one defined time point, one prespecified index scan should usually represent each pregnancy. Treating every repeat scan as a new independent participant falsely enlarges the sample.
5. What is the difference between an Imaging in Pregnancy synopsis and protocol?
The synopsis is the shorter academic submission used for approval or registration. The protocol is the detailed operational plan that fixes gestational age, scan indication, acquisition technique, measurement rules, reader blinding, diagnostic thresholds, reference standard, repeat-scan handling, outcome timing, missing data and statistical analysis.
6. What ethics issues are important in Imaging in Pregnancy research?
The protocol should state whether every ultrasound, Doppler sequence and other imaging examination is part of routine care or whether the study adds any scan solely for research. Routine obstetric ultrasonography does not use ionising radiation, but additional examinations still require justification if they add time, inconvenience or potential anxiety without clinical benefit. Research-only radiography, computed tomography, contrast-enhanced imaging, invasive prenatal testing or venepuncture should not be added merely to strengthen a thesis; if additional blood sampling is genuinely necessary, the purpose and permitted blood volume should be stated.
Prospective participants should provide informed consent, with guardian consent and age-appropriate assent from about seven years where a pregnant minor is included according to institutional requirements and applicable law. Retrospective PACS review may qualify for an ethics-approved waiver of individual consent. DICOM headers and exported or reconstructed images should be anonymised, and identifiable photographs or video require separate consent. The protocol should name the escalation pathway for newly detected ectopic pregnancy, severe foetal growth restriction, major congenital anomaly, placenta accreta spectrum, critical Doppler abnormality, cervical shortening or another finding requiring prompt obstetric action. Prenatal imaging data must also be handled in accordance with applicable Indian law, including the Pre-Conception and Pre-Natal Diagnostic Techniques framework, and must not be used to facilitate unlawful disclosure of foetal sex.
7. What is the biggest methodological error in an Imaging in Pregnancy thesis?
The sharpest error is allowing the final diagnosis or delivery outcome to alter the interpretation of the earlier ultrasound. An equivocal first-trimester scan may later become a confirmed ectopic pregnancy, a subtle placental sign may later correspond to placenta accreta spectrum at surgery, and a suspected anomaly may later be confirmed postnatally. If the original scan is retrospectively relabelled with that later knowledge, the index test is no longer independent and diagnostic performance is inflated.
The protocol should therefore preserve the original report or blinded image interpretation and define the reference diagnosis separately. It should also prespecify the permitted time interval between imaging and outcome because foetal growth, cervical length, amniotic fluid and Doppler can change materially even within the same pregnancy.
8. How does an Imaging in Pregnancy MD thesis differ from PhD and Gulf board research pathways?
An MD synopsis is usually a focused residency dissertation based on routine obstetric imaging and a clinically obtainable reference outcome within one training period. A PhD proposal requires a broader original research programme, a clearer knowledge gap and usually stronger methodological development, multicentre recruitment, advanced imaging, automation or longer follow-up.
Residents beyond the Indian MD pathway should align the project with the mandatory board research project required within SCFHS and Saudi Board training, Arab Board of Health Specializations requirements, and institutional or programme processes linked to DHP, DHA, DOH and MOHAP. Proposal format, supervision, ethics approval, imaging-data governance and completion milestones should follow the relevant training authority.
9. When should I register my Imaging in Pregnancy thesis topic?
Register after confirming case volume, gestational-age range, imaging protocol, measurement method, reference standard, scan-to-outcome interval and availability of delivery or postnatal data, but before prospective recruitment or research-specific data collection begins. For retrospective work, fix the study period and image-review rules before examining final outcomes so that interpretation is not influenced by diagnoses already known.
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