"While the theory of spatial compounding was first highlighted in the 1960s, it wasn't until the technology caught up in the late 1990s that this imaging mode became a practical option 4."
Line 8:83·Never use contractions: use 'was not' in place of 'wasn't'.
Headings Valid
warning
Expected headings
H1
Terminology
H1
Clinical applications
H2
Indications
H2
Contraindications
H1
Technique
H2
Physical principles
H2
Device structure
H2
Device function
H2
Image acquisition
H2
Image reconstruction
H2
Post-processing
H2
Technical advances
H2
Protocols
H1
Interpretation
H2
Normal values
H2
Limitations
H2
Pitfalls and artifacts
H1
History and etymology
H1
Practical points
H1
Related articles
H1
See also
"Limitations"
Line 5:1·"Limitations" is under the wrong parent heading (found under "Clinical applications").