Publications by authors named "Joao Fernando Kazan-Tannus"
Luteoma of pregnancy is a rare, tumorlike ovarian mass that develops during pregnancy and regresses after delivery. Generally, these masses are discovered incidentally during cesarean delivery or tubal ligation. Some of these patients will develop hirsutism or virilization during late pregnancy with or without fetal masculinization due to circulating androgens.
View Article and Find Full Text PDFThe diagnosis of abdominal and pelvic diseases during pregnancy can be challenging. Ultrasonography has been the traditional first-line imaging tool in evaluation of the abdomen and pelvis in a pregnant patient. Magnetic resonance imaging (MRI) has become one of the most useful methods in management of pregnant women in recent years.
View Article and Find Full Text PDFObjective: The purpose of this study was to validate the method of performing fetal brain volumetry. In particular, our objectives were to assess which imaging plane is most reproducible for the performance of brain volumetry measurements and to ascertain inter- and intraobserver variability in determining brain volume in fetuses referred for ventriculomegaly (VM).
Subjects And Methods: In this prospective study, 50 consecutive fetuses at 17-37 weeks of gestational age referred for MRI for VM underwent fast spin-echo T2-weighted imaging.
Objective: The objective of our study was to assess the visibility of the fetal corpus callosum and soft palate on standard single-shot fast spin-echo (SSFSE) imaging versus real-time (RT) SSFSE imaging.
Subjects And Methods: Part 1 of the study was a prospective analysis using a questionnaire rating the ease of use and utility of RT imaging. Part 2 of the study was a retrospective analysis of 69 fetal MRI studies with RT sagittal midline imaging of the head, face, or both.
Article Synopsis
- - The study aimed to compare the effectiveness of 3D ultrasonography (3DUS) and MRI in measuring lung volumes in fetuses, focusing on those with and without lung abnormalities.
- - Researchers analyzed 59 singleton pregnancies, dividing them into two groups based on the presence of lung hypoplasia-related malformations, using the VOCAL program to calculate lung volume from both imaging techniques.
- - Results showed that 3DUS consistently underestimated lung volume compared to MRI, especially at a 30-degree rotation step, indicating a significant disagreement between the two methods for both groups of fetuses.
Objective: Cleft of the secondary palate without cleft lip is difficult to visualize sonographically. This study was performed to assess the utility of sonography, standard magnetic resonance (MR) imaging, and real-time MR imaging in the diagnosis of isolated cleft palate.
Methods: We prospectively assessed 5 fetuses at risk for isolated cleft palate on the basis of family history, micrognathia, or both, using sonography and standard and real-time single-shot fast spin echo MR sequences.