Medical Physics,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Dec. 5, 2024
Abstract
Background
Accurate
and
automatic
segmentation
of
pericardial
adipose
tissue
(PEAT)
in
cardiac
magnetic
resonance
(MR)
images
is
essential
for
the
diagnosis
treatment
cardiovascular
diseases.
Precise
challenging
due
to
high
costs
need
specialized
knowledge,
as
a
large
amount
accurately
annotated
data
required,
demanding
significant
time
medical
resources.
Purpose
In
order
reduce
burden
annotation
while
maintaining
accuracy
tasks,
this
paper
introduces
semi‐supervised
learning
method
solve
limitations
current
PEAT
methods.
Methods
paper,
we
propose
difference‐guided
collaborative
mean
teacher
(DCMT)
method,
designed
from
DCMT
consists
two
main
components:
framework
with
difference
fusion
strategy
backbone
network
MCM‐UNet
using
Mamba‐CNN
mixture
(MCM)
blocks.
The
differential
effectively
utilizes
uncertain
areas
unlabeled
data,
encouraging
model
reach
consensus
predictions
across
these
difficult‐to‐segment
yet
information‐rich
areas.
addition,
considering
sparse
scattered
distribution
MR
images,
which
makes
it
segment,
our
framework.
This
not
only
enhances
processing
ability
global
information,
but
also
captures
detailed
local
features
image,
greatly
improves
segmentation.
Results
Our
experiments
conducted
on
MRPEAT
dataset
show
that
outperforms
existing
state‐of‐the‐art
methods
terms
accuracy.
These
findings
underscore
effectiveness
approach
handling
specific
challenges
associated
Conclusions
significantly
images.
By
utilizing
enhancing
feature
capture
MCM‐UNet,
demonstrates
superior
performance
offers
promising
solution
image
can
alleviate
extensive
requirements
typically
necessary
training
accurate
models
imaging.
International Journal of Imaging Systems and Technology,
Journal Year:
2025,
Volume and Issue:
35(3)
Published: May 1, 2025
ABSTRACT
Consistency
regularization
methods
based
on
uncertainty
estimation
are
a
promising
strategy
for
improving
semi‐supervised
medical
image
segmentation.
However,
existing
consistency
often
neglect
comprehensive
feature
extraction
from
both
low
and
high
regions.
Additionally,
the
lack
of
class
separability
in
segmentation
limits
learning
more
robust
representations
unlabeled
images.
To
address
these
issues,
this
paper
proposes
novel
framework
named
Dual‐Region
Learning
with
Contrastive
Refinement.
The
proposed
Balanced
(DRBCL)
assigns
different
weights
to
regions
predictions
fully
learn
complete
Furthermore,
Hard
Negative
Samples
(CLHNS)
module
incorporates
idea
contrastive
learning.
Positive
hard
negative
sample
pairs
constructed
by
CLHNS
further
improve
inter‐class
contrast
intra‐class
In
10%
labeled
experiment,
method
achieves
Dice
coefficients
89.50%
LA
MR
dataset
72.08%
Pancreas
CT
dataset,
which
surpass
benchmarks
establishes
new
state‐of‐the‐art
performance.
Medical Physics,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Dec. 5, 2024
Abstract
Background
Accurate
and
automatic
segmentation
of
pericardial
adipose
tissue
(PEAT)
in
cardiac
magnetic
resonance
(MR)
images
is
essential
for
the
diagnosis
treatment
cardiovascular
diseases.
Precise
challenging
due
to
high
costs
need
specialized
knowledge,
as
a
large
amount
accurately
annotated
data
required,
demanding
significant
time
medical
resources.
Purpose
In
order
reduce
burden
annotation
while
maintaining
accuracy
tasks,
this
paper
introduces
semi‐supervised
learning
method
solve
limitations
current
PEAT
methods.
Methods
paper,
we
propose
difference‐guided
collaborative
mean
teacher
(DCMT)
method,
designed
from
DCMT
consists
two
main
components:
framework
with
difference
fusion
strategy
backbone
network
MCM‐UNet
using
Mamba‐CNN
mixture
(MCM)
blocks.
The
differential
effectively
utilizes
uncertain
areas
unlabeled
data,
encouraging
model
reach
consensus
predictions
across
these
difficult‐to‐segment
yet
information‐rich
areas.
addition,
considering
sparse
scattered
distribution
MR
images,
which
makes
it
segment,
our
framework.
This
not
only
enhances
processing
ability
global
information,
but
also
captures
detailed
local
features
image,
greatly
improves
segmentation.
Results
Our
experiments
conducted
on
MRPEAT
dataset
show
that
outperforms
existing
state‐of‐the‐art
methods
terms
accuracy.
These
findings
underscore
effectiveness
approach
handling
specific
challenges
associated
Conclusions
significantly
images.
By
utilizing
enhancing
feature
capture
MCM‐UNet,
demonstrates
superior
performance
offers
promising
solution
image
can
alleviate
extensive
requirements
typically
necessary
training
accurate
models
imaging.