Journals / Journal of the Turkish-German Gynecological Association / 2011 / Cilt: 12 - Sayı: 1

Fetal manyetik rezonans görüntülemenin obstetri pratiğindeki yeri

Fetal magnetic resonance imaging in obstetric practice

Pages
39–46
Publication Date
2022-10-18
DOI
—
🏛️Bibliographic metadata and full text access for this article are provided via DergiPark.
DergiPark Record ↗
✨

AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

It provides important information for prenatal diagnosis, increases diagnostic accuracy, and in turn affects the prenatal treatment, prenatal interventions and birth plan.

📌 3 Key Takeaways

🎯
Objective & Hypothesis:Ultrasonography (USG) is the primary imaging method for prenatal diagnosis of fetal abnormalities since its discovery.
📊
Key Findings & Data:The need and importance of fetal MRI applications further increased by the intrauterine surgery which is currently gaining popularity.
💡
Conclusion & Impact:It provides important information for prenatal diagnosis, increases diagnostic accuracy, and in turn affects the prenatal treatment, prenatal interventions and birth plan.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Domain Parameters

Abstract

Ultrasonography (USG) is the primary imaging method for prenatal diagnosis of fetal abnormalities since its discovery. Although it is the primary method of fetal imaging, it cannot provide sufficient information about the fetus in some conditions such as maternal obesity, oligohydramnios and engagement of the fetal head. At this stage, magnetic resonance imaging (MRI) facilitates examination by providing more specific information. The need and importance of fetal MRI applications further increased by the intrauterine surgery which is currently gaining popularity. Some advantages of fetal MRI over USG are the good texture of contrast, a greater study area and visualization of the lesion and neighbourhood relations, independence of the operators. Also it is not affected by maternal obesity and severe oligohydramnios. However, MRI is inadequate in detecting fetal limb and cardiac abnormalities when compared to USG. MRI is not used routinely in pregnancy. It is used in situations where nonionizing imaging methods are inadequate or ionizing radiation is required in pregnant women. It is not recommended during the first trimester. Contrast agent (Godalinium) is not used during pregnancy. It is believed that MRI is not harmful to the fetus, although the biological risk of MRI application is not known. MRI technique is superior to USG in the detection of corpus callosum dysgenesis, third-trimester evaluation of posterior fossa malformations, bilateral renal agenesis, diaphragmatic hernia and assessment of lung maturation. Especially, it is the method of choice for evaluation of central nervous system (CNS) abnormalities. Fetal MRI has a complementary role with USG. It provides important information for prenatal diagnosis, increases diagnostic accuracy, and in turn affects the prenatal treatment, prenatal interventions and birth plan.

Özet

Ultrasonografi (USG) keşfedilmesinden günümüze kadar fetal anomalilerin prenatal tanısında primer görüntüleme yöntemidir. Fetal görüntülemede USG primer yöntem olmasına rağmen fetus hakkında yeterli bilgi veremediği obezite, oligohidramnioz, fetal başın angajmanı gibi durumlar vardır. Bu aşamada manyetik rezonans görüntüleme (MRG) daha fazla spesifik bilgi sağlayarak bize yardımcı olmaktadır. Günümüzde giderek yaygınlaşan intrauterin cerrahi, fetal MRG uygulamalarına olan ihtiyacı ve önemini daha da arttırmaktadır. MRG’nin doku kontrastını iyi verebilmesi, inceleme alanının büyük olması ve böylece lezyon ile olan komşulukların ilişkisinin gösterilebilmesi, operatörden bağımsız oluşu, maternal obezite ve ciddi oligohidramnioz durumundan etkilenmemesi USG’ye olan üstünlüklerindendir. Ancak fetal ekstremite değerlendirilmesi ve fetal kardiyak anomali tesbitinde MRG, USG’ye göre yetersiz kalmaktadır. MRG gebelikte rutin olarak kullanılmaz. Noniyonize görüntü yöntemleri yetersiz kaldığında veya iyonoze radyasyon gerektiren durumlarda gebe kadınlarda MRG kullanılır. İlk trimesterde önerilmemektedir. Kontrast madde (Gadolinium) kullanılmaz. MRG uygulamasının biyolojik riski bilinmemekle birlikte fetusa zararlı etkisi olmadığına inanılmaktadır. Kopus kallozum disgenezisi, üçüncü trimesterde posterior fossa malformasyonlarının değerlendirilmesi, bilateral renal agenezi, diyafram hernisi ve akciğer maturasyonu saptamada MRG tekniği USG’ye üstündür. Özellikle santral sinir sistemi (SSS) anormalliklerinin değerlendirilmesinde sıklıkla kullanılan bir yöntemdir. Fetal MRG, USG’yi tamamlayıcı bir rol üstlenmekte ve prenatal tanıda önemli bilgiler sağlayarak tanı doğrulunu, prenatal tedaviyi, prenatal girişimi ve doğum planını etkileyebilmektedir.

🔖

Cite This Article

KÖŞÜŞ, N., KÖŞÜŞ, A., TEKŞAM, M., TURHAN, N. Ö., DURAN, M., USLUOĞULLARI, B. (2022). Fetal manyetik rezonans görüntülemenin obstetri pratiğindeki yeri. Journal of the Turkish-German Gynecological Association, Cilt: 12 - Sayı: 1, 39–46. https://ajindex.com/articles/567722

📄 Full Text PDF Viewer

📄

PDF görüntüleyici hazırlanıyor...

References (17)

  1. Pugash D, Brugger PC, Bettelheim D, Prayer D. Prenatal ultrasound and fetal MRI: The comparative value of each modality in prenatal diagnosis. Eur J Radiol 2008
  2. [CrossRef] 2. Kline-Fath B, Bitters C. Prenatal Imaging. Newborn Infant Nurs Rev 2007
  3. [CrossRef] 3. Smith FW, Adam AH, Phillips WDP. NMR imaging in pregnancy. Lancet 1983
  4. McCarthy S. Magnetic resonance imaging in obstetrics and gynecology. Magn Reson Imaging 1986
  5. [CrossRef] 5. Levine, Deborah MD. Magnetic resonance imaging in prenatal diagnosis. Curr Opin Pediatr 2001
  6. [CrossRef] 6. Reiss I, Gortner L, Moller J, Gehl HB, Baschat AA, Gembruch U. Gembruch U. Fetal intracerebral hemorrhage in the second trimester: diagnosis by sonography and magnetic resonance imaging. Ultrasound in obstet gynecol 1996
  7. [CrossRef] 7. Chew S, Ahmadi A, Goh PS, Foong LC. The effects of 1.5T magnetic resonance imaging on early murine in-vitro embryo development. J Magn Reson Imaging. 2001
  8. [CrossRef] 8. O’Connor M. Intrauterine effects in animals exposed to radiofrequency and microwave fields. Teratology 1999
  9. [CrossRef] 9. Kanal E, Gillen J, Evans JA, Savitz DA, Shellock FG. Survey of reproductive health among female MR workers. Radiology 1993
  10. Baker P, Johnson I, Harvey P, Gowland PA, Mansfield P et al. A three-year follow-up of children imaged in utero with echo-planar magnetic resonance. Am J Obstet Gynecol 1994
  11. Shellock FG, Kanal E. Policies, guidelines, and recommendations for MR imaging safety and patient management. SMRI Safety Committee. J Magn Reson Imaging 1991
  12. [CrossRef] 12. Levine D. Ultrasound versus magnetic resonance imaging in fetal evaluation. Top Magn Reson Imaging 2001
  13. [CrossRef] 13. Hubbard AM. Magnetic resonance imaging of fetal thoracic abnormalities. Top Magn Reson Imaging 2001
  14. [CrossRef] 14. Levine D, Barnes PD, Madsen JR, Li W, Edelman RR. Fetal central nervous system anomalies: MR imaging augments sonographic diagnosis. Radiology 1997
  15. Hubbard AM, Simon EM. Fetal imaging. Magn Reson Imaging Clin N Am 2002
  16. [CrossRef] 16. Stazzone MM, Hubbard AM, Bilaniuk LT, Harty MP, Meyer JS, Zimmerman RA et al. Ultrafast MR imaging of the normal posterior fossa in fetuses. AJR Am J Roentgenol 2000
  17. Wolff S, Crooks LE, Brown P, Howard R, Painter RB. Tests for DNA and chromosomal damage induced by nucl