|
Transabdominal ultrasound
|
Ultrasound waves
|
1 mm
|
Described in text
|
|
Transvaginal ultrasound
|
Ultrasound waves
|
0.5–1.0 mm
|
None
|
|
MRI (Fusion Imaging)
|
Real time MRI and Ultrasound synchronized
|
1.08–1.6 mm
|
None
|
|
Optical Coherence Tomography (OCT)
|
Near infrared light for real time high resolution cross sectional image of microstructure
|
1–10 μm
|
Yes, fetal membranes thicker in full term birth without PROM compared to full term birth with PROM and preterm birth without PROM
|
|
Shear Wave Elastography (SWE)
|
Acoustic radiation that causes displacement, which is used to measure tissue stiffness
|
10–20 mm
|
None
|
|
Magnetic Resonance Elastography (MRE)
|
Similar as above using MRI
|
1.08–1.6 mm
|
None
|
|
Optical Coherence Elastography (photoacoustic technology)
|
Similar as above using OCT
|
1–10 μm with displacement measured up to 20 μm
|
None
|
