Journal of Magnetic Resonance Imaging,
Journal Year:
2024,
Volume and Issue:
60(6), P. 2694 - 2704
Published: March 8, 2024
Background
The
human
epidermal
growth
factor
receptor
2
(HER2)
has
recently
emerged
as
hotspot
in
targeted
therapy
for
urothelial
bladder
cancer
(UBC).
HER2
status
is
mainly
identified
by
immunohistochemistry
(IHC),
preoperative
and
noninvasive
methods
determining
UBC
remain
searching.
Purposes
To
investigate
whether
radiomics
features
extracted
from
MRI
using
machine
learning
algorithms
can
noninvasively
evaluate
the
UBC.
Study
Type
Retrospective.
Population
One
hundred
ninety‐five
patients
(age:
68.7
±
10.5
years)
with
14.3%
females
January
2019
to
May
2023
were
divided
into
training
(N
=
156)
validation
39)
cohorts,
43
67.1
13.1
13.9%
June
2024
constituted
test
cohort
43).
Field
Strength/Sequence
3
T,
T2‐weighted
imaging
(turbo
spin‐echo),
diffusion‐weighted
(breathing‐free
spin
echo).
Assessment
assessed
IHC.
Radiomics
images.
Pearson
correlation
coefficient
least
absolute
shrinkage
selection
operator
(LASSO)
applied
feature
selection,
six
models
established
optimal
identify
Statistical
Tests
Mann–Whitney
U
‐test,
chi‐square
test,
LASSO
algorithm,
receiver
operating
characteristic
analysis,
DeLong
test.
Results
Three
thousand
forty‐five
each
lesion,
22
retained
analysis.
Support
Vector
Machine
model
demonstrated
best
performance,
an
AUC
of
0.929
(95%
CI:
0.888–0.970)
accuracy
0.859
cohort,
0.886
0.780–0.993)
0.846
0.712
0.535–0.889)
0.744
cohort.
Data
Conclusion
MRI‐based
combining
algorithm
provide
a
promising
approach
assess
preoperatively.
Evidence
Level
Technical
Efficacy
Stage
Journal of Magnetic Resonance Imaging,
Journal Year:
2023,
Volume and Issue:
58(5), P. 1603 - 1614
Published: Feb. 10, 2023
Multiparametric
MRI
radiomics
could
distinguish
human
epidermal
growth
factor
receptor
2
(HER2)-positive
from
HER2-negative
breast
cancers.
However,
its
value
for
further
distinguishing
HER2-low
cancers
has
not
been
investigated.To
investigate
whether
multiparametric
MRI-based
can
HER2-positive
(task
1)
and
2).Retrospective.Task
1:
310
operable
cancer
patients
center
1
(97
213
HER2-negative);
task
2:
(108
105
HER2-zero);
59
(16
HER2-positive,
27
16
HER2-zero)
external
validation.A
3.0
T/T1-weighted
contrast-enhanced
imaging
(T1CE),
diffusion-weighted
(DWI)-derived
apparent
diffusion
coefficient
(ADC).Patients
in
were
assigned
to
a
training
internal
validation
cohort
at
2:1
ratio.
Intratumoral
peritumoral
features
extracted
T1CE
ADC.
After
dimensionality
reduction,
the
signatures
(RS)
of
two
tasks
developed
using
(RS-T1CE),
ADC
(RS-ADC)
alone
+
combination
(RS-Com).Mann-Whitney
U
tests,
least
absolute
shrinkage
selection
operator,
receiver
operating
characteristic
(ROC)
curve,
calibration
decision
curve
analysis
(DCA).For
1,
RS-ADC
yielded
higher
area
under
ROC
(AUC)
training,
internal,
0.767/0.725/0.746
than
RS-T1CE
(AUC
=
0.733/0.674/0.641).
For
2,
AUC
0.765/0.755/0.678
0.706/0.608/0.630).
both
RS-Com
achieved
best
performance
with
0.793/0.778/0.760
0.820/0.776/0.711,
respectively,
obtained
clinical
benefit
DCA
compared
RS-ADC.
The
curves
all
RS
demonstrated
good
fitness.Multiparametric
noninvasively
robustly
cancers.3.Stage
2.
American Journal of Roentgenology,
Journal Year:
2024,
Volume and Issue:
222(4)
Published: Jan. 24, 2024
Breast
cancer
HER2
expression
has
been
redefined
using
a
three-tiered
system,
with
HER2-zero
cancers
considered
ineligible
for
HER2-targeted
therapy,
HER2-low
candidates
novel
drugs,
and
HER2-positive
treated
traditional
medications.
Medical Physics,
Journal Year:
2022,
Volume and Issue:
49(10)
Published: Aug. 18, 2022
Abstract
Multiparametric
magnetic
resonance
imaging
(mpMRI)
is
an
indispensable
tool
in
the
clinical
workflow
for
diagnosis
and
treatment
planning
of
various
diseases.
Machine
learning–based
artificial
intelligence
(AI)
methods,
especially
those
adopting
deep
learning
technique,
have
been
extensively
employed
to
perform
mpMRI
image
classification,
segmentation,
registration,
detection,
reconstruction,
super‐resolution.
The
current
availabilities
increasing
computational
power
fast‐improving
AI
algorithms
empowered
numerous
computer‐based
systems
applying
disease
diagnosis,
imaging‐guided
radiotherapy,
patient
risk
overall
survival
time
prediction,
development
advanced
quantitative
technology
fingerprinting.
However,
wide
application
these
developed
clinic
still
limited
by
a
number
factors,
including
robustness,
reliability,
interpretability.
This
survey
aims
provide
overview
new
researchers
field
as
well
radiologists
with
hope
that
they
can
understand
general
concepts,
main
scenarios,
remaining
challenges
mpMRI.
Diagnostics,
Journal Year:
2022,
Volume and Issue:
12(11), P. 2825 - 2825
Published: Nov. 16, 2022
Breast
cancer
is
a
significant
health
concern
among
women.
Prompt
diagnosis
can
diminish
the
mortality
rate
and
direct
patients
to
take
steps
for
treatment.
Recently,
deep
learning
has
been
employed
diagnose
breast
in
context
of
digital
pathology.
To
help
this
area,
transfer
learning-based
model
called
'HE-HER2Net'
proposed
multiple
stages
HER2
(HER2-0,
HER2-1+,
HER2-2+,
HER2-3+)
on
H&E
(hematoxylin
&
eosin)
images
from
BCI
dataset.
HE-HER2Net
modified
version
Xception
model,
which
additionally
comprised
global
average
pooling,
several
batch
normalization
layers,
dropout
dense
layers
with
swish
activation
function.
This
exceeds
all
existing
models
terms
accuracy
(0.87),
precision
(0.88),
recall
(0.86),
AUC
score
(0.98)
immensely.
In
addition,
our
explained
through
class-discriminative
localization
technique
using
Grad-CAM
build
trust
make
more
transparent.
Finally,
nuclei
segmentation
performed
StarDist
method.
Heliyon,
Journal Year:
2024,
Volume and Issue:
10(7), P. e28722 - e28722
Published: April 1, 2024
To
investigate
the
potential
of
radiomics
signatures
(RSs)
from
intratumoral
and
peritumoral
regions
on
multiparametric
magnetic
resonance
imaging
(MRI)
to
noninvasively
evaluate
HER2
status
in
breast
cancer.
BMC Medical Imaging,
Journal Year:
2021,
Volume and Issue:
21(1)
Published: May 17, 2021
Abstract
Background
The
molecular
biomarkers
of
breast
ductal
carcinoma
in
situ
(DCIS)
have
important
guiding
significance
for
individualized
precision
treatment.
This
study
was
intended
to
explore
the
radiomics
based
on
ultrasound
images
predict
expression
mass
type
DCIS.
Methods
116
patients
with
DCIS
were
included
this
retrospective
study.
features
extracted
images.
According
ratio
7:3,
data
sets
split
into
training
set
and
test
set.
models
developed
estrogen
receptor
(ER),
progesterone
(PR),
human
epidermal
growth
factor
2
(HER2),
Ki67,
p16,
p53
by
using
combination
multiple
feature
selection
classifiers.
predictive
performance
evaluated
area
under
curve
(AUC)
receiver
operating
curve.
Results
investigators
5234
from
12,
23,
41,
51,
31
23
constructing
models.
scores
significantly
(P
<
0.05)
each
marker
showed
AUC
greater
than
0.7
set:
ER
(0.94
0.84),
PR
(0.90
0.78),
HER2
0.74),
Ki67
(0.95
0.86),
p16
(0.96
respectively.
Conclusion
Ultrasonic-based
analysis
provided
a
noninvasive
preoperative
method
predicting
markers
good
accuracy.