"has progressively improved" is correct and usable in written English.
You can use it when you are referring to something that has been changing gradually over a period of time in a positive direction. For example: "The quality of public education in the city has progressively improved in the last five years."
In the past two decades, the prognosis of HCC has progressively improved owing to the progress of local and locoregional treatment options, the definition of specific criteria for therapeutic stratification and the implementation of screening programs4,5.
If a deal can be struck, it would mark a huge change in Mr. Bush's relationship with Mr. Putin, a relationship that started off rocky but has progressively improved.
Prof. Kotwal's publications describe how he has progressively improved the experimental techniques for the W boson mass measurement.
His previous publications describe how he has progressively improved the experimental techniques for the W boson mass measurement.
Since then, the introduction of advanced techniques like powerful forward error correction, fast power control, link adaptation, incremental redundancy, and so forth, has progressively improved the spectral efficiency at the link-level.
However, the conjugated nanoparticles or nanomaterial has progressively improved advantages such as photo stability [48, 49] and low cytotoxicity [50] over the years except for friendlier preparation [51] and separation features [48].
"Natural history museums have progressively improved public engagement through immersive exhibits, participation in field expeditions, and research using museum holdings.
"There is a greater recognition of the challenges presented by autism especially in the social setting and also my social skills have progressively improved over the years".
Genetically engineered mouse (GEM) models of cancer have progressively improved in technical sophistication and accurately recapitulating the cognate human condition and have had a measurable impact upon our knowledge of tumorigenesis.
Genetically engineered mouse models (GEMM) of cancer have progressively improved in technical sophistication and, accurately recapitulating the human cognate condition, have had a measureable impact on our knowledge of tumourigenesis.
Two months later, during a follow-up visit, the patient referred that both the pain and tinnitus had progressively improved.
