title: Low-dose computed tomography to diagnose fetal bone dysplasias.
abstract: We present a case of cleidocranial dysplasia diagnosed by low-dose fetal computed tomography (CT) in the 25th week of gestation. Severe bone dysplasia was suspected because of the fetus' low percentile in long bones length and the appearance of craniosynostosis on sonography. CT found no abnormalities incompatible with life. The effective dose was 5 mSv, within the recommended range for this type of examination. Low-dose fetal CT is a new technique that makes precision study of the bony structures possible from the second trimester of pregnancy. In Spain, abortion is legal even after the 22nd week of gestation in cases of severe fetal malformations. Therefore, in cases in which severe bone dysplasia is suspected, radiologists must know the strategies for reducing the dose of radiation while maintaining sufficient diagnostic quality, and they must also know which bony structures to evaluate.
authors.affiliation: Servicio de Radiología, Hospital Universitario y Politécnico La Fe, Valencia, España. Electronic address: montoyafilardi@gmail.com.
authors.forename: A
authors.initials: A
authors.lastname: Montoya Filardi
authors.affiliation: Servicio de Radiología, Hospital Universitario y Politécnico La Fe, Valencia, España.
authors.forename: M
authors.initials: M
authors.lastname: Guasp Vizcaíno
authors.affiliation: Servicio de Radiología, Hospital Universitario y Politécnico La Fe, Valencia, España.
authors.forename: J
authors.initials: J
authors.lastname: Gómez Fernández-Montes
authors.affiliation: Servicio de Radiología, Hospital Universitario y Politécnico La Fe, Valencia, España.
authors.forename: R
authors.initials: R
authors.lastname: Llorens Salvador
mesh_terms: D002973:Cleidocranial Dysplasia / Q000000981:diagnostic imaging* / Q000196:embryology*; D005260:Female; D006801:Humans; D011247:Pregnancy; D011296:Prenatal Diagnosis; D011829:Radiation Dosage; D014057:Tomography, X-Ray Computed / Q000379:methods*
keywords: Bone dysplasia; Cleidocranial dysplasia; Displasia cleidocraneal; Displasia ósea; Dose reduction; Low-dose fetal computed tomography; Reducción de dosis; Tomografía computarizada de baja dosis fetal