bioRxiv (Cold Spring Harbor Laboratory),
Journal Year:
2024,
Volume and Issue:
unknown
Published: Nov. 7, 2024
Abstract
This
study
introduces
the
Structural
MRI-based
Alzheimer’s
Disease
Score
(SMAS),
a
novel
index
intended
to
quantify
(AD)-related
morphometric
patterns
using
deep
learning
Bayesian-supervised
Variational
Autoencoder
(Bayesian-SVAE).
SMAS
was
constructed
baseline
structural
MRI
data
from
DELCODE
and
evaluated
longitudinally
in
two
independent
cohorts:
DEL-CODE
(n=415)
ADNI
(n=190).
Our
findings
indicate
that
has
strong
associations
with
cognitive
performance
(DELCODE:
r=-0.83;
ADNI:
r=-0.62),
age
(DEL-CODE:
r=0.50;
r=0.28),
hippocampal
volume
r=-0.44;
r=-0.66),
total
grey
matter
r=-0.42;
r=-0.47),
suggesting
its
potential
as
biomarker
for
AD-related
brain
atrophy.
Moreover,
our
longitudinal
studies
suggest
may
be
useful
early
identification
tracking
of
AD.
The
model
demonstrated
significant
predictive
accuracy
distinguishing
cognitively
healthy
individuals
those
AD
AUC=0.971
at
baseline,
0.833
36
months;
AUC=0.817
improving
0.903
24
months).
Notably,
over
36-month
period,
outperformed
existing
measures
such
SPARE-AD
volume.
Relevance
map
analysis
revealed
morphological
changes
key
regions—including
hippocampus,
posterior
cingulate
cortex,
precuneus,
lateral
parietal
cortex—highlighting
is
sensitive
interpretable
atrophy,
suitable
detection
monitoring
disease
progression.
Frontiers in Oral Health,
Journal Year:
2025,
Volume and Issue:
6
Published: March 10, 2025
Oral
cavity
cancer
is
associated
with
high
morbidity
and
mortality,
particularly
advanced
stage
diagnosis.
cancer,
typically
squamous
cell
carcinoma
(OSCC),
often
preceded
by
oral
potentially
malignant
disorders
(OPMDs),
which
comprise
eleven
variable
risks
for
transformation.
While
OPMDs
are
clinical
diagnoses,
conventional
exam
followed
biopsy
histopathological
analysis
the
gold
standard
diagnosis
of
OSCC.
There
vast
heterogeneity
in
presentation
OPMDs,
possible
visual
similarities
to
early-stage
OSCC
or
even
various
benign
mucosal
abnormalities.
The
diagnostic
challenge
OSCC/OPMDs
compounded
non-specialist
primary
care
setting.
has
been
significant
research
interest
technology
assist
OSCC/OPMDs.
Artificial
intelligence
(AI),
enables
machine
performance
human
tasks,
already
shown
promise
several
domains
medical
diagnostics.
Computer
vision,
field
AI
dedicated
data,
over
past
decade
applied
photographs
Various
methodological
concerns
limitations
may
be
encountered
literature
on
OSCC/OPMD
image
analysis.
This
narrative
review
delineates
current
landscape
photograph
navigates
limitations,
issues,
workflow
implications
this
field,
providing
context
future
considerations.
Philosophical Transactions of the Royal Society A Mathematical Physical and Engineering Sciences,
Journal Year:
2025,
Volume and Issue:
383(2292)
Published: March 13, 2025
In
this
opinion
piece,
we
examine
the
pivotal
role
that
uncertainty
quantification
(UQ)
plays
in
informing
clinical
decision-making
processes.
We
explore
challenges
associated
with
healthcare
data
and
potential
barriers
to
widespread
adoption
of
UQ
methodologies.
doing
so,
highlight
how
these
techniques
can
improve
precision
reliability
medical
evaluations.
delve
into
crucial
understanding
managing
uncertainties
present
(such
as
measurement
error),
diagnostic
tools
treatment
outcomes.
discuss
such
impact
emphasize
importance
systematically
analysing
them.
Our
goal
is
demonstrate
effectively
addressing
decoding
significantly
enhance
accuracy
robustness
decisions,
ultimately
leading
better
patient
outcomes
more
informed
practices.
This
article
part
theme
issue
‘Uncertainty
for
biological
systems
(Part
1)’.
Medical & Biological Engineering & Computing,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 23, 2025
Positron
emission
tomography
(PET)
imaging
plays
a
pivotal
role
in
oncology
for
the
early
detection
of
metastatic
tumors
and
response
to
therapy
assessment
due
its
high
sensitivity
compared
anatomical
modalities.
The
balance
between
image
quality
radiation
exposure
is
critical,
as
reducing
administered
dose
results
lower
signal-to-noise
ratio
(SNR)
information
loss,
which
may
significantly
affect
clinical
diagnosis.
Deep
learning
(DL)
algorithms
have
recently
made
significant
progress
low-dose
(LD)
PET
reconstruction.
Nevertheless,
successful
application
requires
thorough
evaluation
uncertainty
ensure
informed
judgment.
We
propose
NPB-LDPET,
DL-based
non-parametric
Bayesian
framework
LD
reconstruction
assessment.
Our
utilizes
an
Adam
optimizer
with
stochastic
gradient
Langevin
dynamics
(SGLD)
sample
from
underlying
posterior
distribution.
employed
Ultra-low-dose
Challenge
dataset
assess
our
framework's
performance
relative
Monte
Carlo
dropout
benchmark.
evaluated
global
accuracy
utilizing
SSIM,
PSNR,
NRMSE,
local
lesion
conspicuity
using
mean
absolute
error
(MAE)
contrast,
relevance
maps
employing
correlation
measures
reduction
factor
(DRF).
NPB-LDPET
method
exhibits
superior
various
DRFs
(paired
t-test,
p<0.0001
,
N=10,
631).
Moreover,
we
demonstrate
21%
MAE
(573.54
vs.
723.70,
paired
N=28)
8.3%
improvement
contrast
(2.077
1.916,
N=28).
Furthermore,
stronger
predicted
95th
percentile
score
DRF
(
r2=0.9174
r2=0.6144
proposed
has
potential
improve
decision-making
by
providing
more
accurate
informative
while
exposure.
Proceedings of the Institution of Mechanical Engineers Part D Journal of Automobile Engineering,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Feb. 27, 2025
Fatigue
failures
in
vehicle
subframes
are
a
critical
challenge
due
to
complex
and
unpredictable
loads.
Traditional
methods
often
fail
capture
the
uncertainty
load
conditions,
resulting
unreliable
fatigue
life
predictions.
This
study
introduces
an
improved
bootstrap
method
address
these
uncertainties.
Real-world
testing
data
were
used
construct
spectra
with
Generalized
Pareto
Distribution
model,
enabling
accurate
prediction
of
rare
but
impactful
events.
The
rain-flow
counting
was
perform
frequency
statistics
on
signals.
obtained
S-N
curve
corrected
based
Haibach
theory.
process
provided
distribution
parameters
mean
amplitude.
then
estimated
using
modified
Miner’s
theory,
which
achieved
significant
improvements
accuracy
reliability.
improves
can
be
applied
product
design
improvement
mechanical
engineering
related
fields.
Oncotarget,
Journal Year:
2025,
Volume and Issue:
16(1), P. 249 - 255
Published: Jan. 20, 2025
Recent
advances
in
deep
learning
models
have
transformed
medical
imaging
analysis,
particularly
radiology.
This
editorial
outlines
how
uncertainty
quantification
through
embedding-based
approaches
enhances
diagnostic
accuracy
and
reliability
hepatobiliary
imaging,
with
a
specific
focus
on
oncological
conditions
early
detection
of
precancerous
lesions.
We
explore
modern
architectures
like
the
Anisotropic
Hybrid
Network
(AHUNet),
which
leverages
both
2D
3D
volumetric
data
innovative
convolutional
approaches.
consider
implications
for
quality
assurance
radiological
practice
discuss
recent
clinical
applications.