aortosternal distance

the aortosternal distance (ASD) is a new CT-marker (since 2019 ?)
to measure the prognosis in pulmonary fibrosis.
If you have IPF have you looked at the CTs to measure the ASD ?
Or asked the radiologist about it ?

Now, this is so far only examined for fibrosis, but the explanation
suggests that it could also be useful for other diseases related
to inspiratory volume.

I just measured mine and it went from 21 mm in May2024
to 14mm in Aug.2024 to 10mm in Dec2024
so much more than the 2.5% per year with already bad prognosis.
However I may or may not have IPF one radiologist said "small fibrosis" another said "no fibrosis, but traction bronchiectasis"

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"In our study, we found that the ASD progressively short-
ens as the disease progresses, with an average reduction
of 2.45% per month, which provides new evidence of dis-
ease progression. This may be due to increased fibrosis
and volume loss in progressive IPF, leading to a reduction
in the anterior-posterior anatomical distance of the tho-
rax. This may also be related to variations in the patient’s
inspiratory volume. Robbie et al. [24]. found that the aor-
tic sternal distance specifically decreased by 25% per year,
providing evidence of disease progression. This aligns
with our findings."
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