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Ultrasonography01:17

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Ultrasonography is an imaging technique that uses high-frequency sound waves to visualize the body's internal structures. It is a non-invasive and safe procedure that does not involve the use of ionizing radiation, making it widely used in various medical fields. Ultrasonography is used to study heart function, blood flow in the neck or extremities, certain conditions such as gallbladder disease, and fetal growth and development.
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Radiological Investigation I: X-ray and CT01:30

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Radiological investigations, including X-rays and computed tomography (CT) scans, are critical for diagnosing and evaluating various medical conditions. These imaging techniques provide valuable insights into the body's internal structures, aiding in the detection of abnormalities, assessment of disease progression, and development of treatment strategies. This article delves into two primary radiological investigations, chest X-rays and CT scans, outlining their purpose, procedures, and...
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Imaging Studies II: Ultrasonography01:24

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IntroductionUltrasonography, or renal ultrasound, is a noninvasive medical imaging technique that uses high-frequency sound waves to visualize the kidneys, ureters, bladder, and surrounding tissues.Indications for Urinary System UltrasonographyUrinary system ultrasonography is indicated in various clinical scenarios, such as:Kidney Stones (Urolithiasis): To detect and monitor the size and presence of kidney or urinary tract stones.Hydronephrosis: To assess the dilation of the renal pelvis and...
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Imaging Studies for Cardiovascular System III: X-Ray01:20

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The most common cardiovascular diagnostic test is an X-ray. It produces images of the heart, blood vessels, and adjacent structures.
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Computed Tomography01:10

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Tomography refers to imaging by sections. Computed tomography (CT) is a non-invasive imaging technique that uses computers to analyze several cross-sectional X-rays to reveal minute details about structures in the body.
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Related Experiment Video

Updated: Apr 23, 2026

Guide Wire Assisted Catheterization and Colored Dye Injection for Vascular Mapping of Monochorionic Twin Placentas
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Imaging concerns unique to twin pregnancy.

Sowmya Mahalingam1, Manjiri Dighe2

  • 1George Washington University, Washington, DC.

Current Problems in Diagnostic Radiology
|September 21, 2014
PubMed
Summary

Multiple gestations, including twin pregnancies, are rising due to maternal age and reproductive technologies. This overview aids radiologists in managing twin pregnancies, covering diagnosis, surveillance, and treatment.

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Area of Science:

  • Obstetrics and Gynecology
  • Radiology
  • Maternal-Fetal Medicine

Background:

  • Rising incidence of multiple gestations linked to increased maternal age and assisted reproductive technologies.
  • Twinning increases risks, including structural anomalies, preterm birth, and perinatal complications.
  • Unique twin pregnancy conditions include twin-to-twin transfusion syndrome and conjoined twins.

Purpose of the Study:

  • To provide an overview of the twinning process for radiologists.
  • To cover pathophysiology, diagnostic challenges, and management strategies for multiple gestations.
  • To outline outcomes and treatment options for twin pregnancies.

Main Methods:

  • Review of current literature on multiple gestations and twinning.
  • Discussion of diagnostic imaging techniques and their advancements.
  • Synthesis of information on management and treatment options.

Main Results:

  • Advances in imaging improve prenatal diagnosis and antenatal surveillance.
  • Accurate diagnosis and management are crucial for optimizing outcomes in multiple gestations.
  • Radiologists play a key role in managing complex twin pregnancies.

Conclusions:

  • Effective management of multiple gestations requires understanding twinning pathophysiology and diagnostic nuances.
  • Utilizing advanced imaging and surveillance strategies is essential for improved patient outcomes.
  • This overview equips radiologists with knowledge for better care of twin pregnancies.