Value of Ultrahigh‐Resolution Photon‐Counting Detector Computed Tomography in Cardiac Imaging
Echocardiography,
Journal Year:
2025,
Volume and Issue:
42(2)
Published: Feb. 1, 2025
ABSTRACT
It
was
only
fitting
that
when
computed
tomography
(CT)
celebrating
its
50th
birthday
since
maiden
scan
in
1971,
it
also
entering
into
a
new
generation
2021
with
the
Food
and
Drug
Administration's
approval
of
first
photon‐counting
detector
(PCD)‐CT.
As
non‐invasive
cardiac
imaging
is
evolving
an
ever
more
important
medical
field,
introduction
this
technology
promises
slew
improvements
over
energy‐integrating
(EID)‐CTs,
most
importantly
improved
spatial
resolution
form
ultrahigh‐resolution
(UHR)
imaging,
reduced
radiation
exposure,
routinely
acquired
spectral
information.
Spatial
has
historically
been
key
hurdle
for
CT,
especially
coronary
where
structures
realm
2
mm
need
to
be
assessed.
Initial
reports
on
use
PCD‐CT
so
far
have
promising,
but
many
questions
ranging
from
standardized
protocols
evidence‐based
recommendations
remain.
The
aim
review
discuss
currently
available
literature
regarding
UHR
explore
if
led
changes
guidelines
or
patient
workflows.
Language: Английский
Reducing contrast media and radiation dose in CT angiography at low tube voltage: animal study with photon-counting detector CT
Konstantin Klambauer,
No information about this author
Thomas Flohr,
No information about this author
Lukas J. Moser
No information about this author
et al.
European Radiology Experimental,
Journal Year:
2025,
Volume and Issue:
9(1)
Published: March 24, 2025
Abstract
Background
Reducing
radiation
and
contrast
media
(CM)
doses
in
computed
tomography
angiography
(CTA)
is
especially
relevant
for
potentially
vulnerable
populations.
Low
tube
voltage
photon-counting
detector
CT
(PCD-CT)
offers
an
improved
iodine
contrast-to-noise
ratio
(CNR)
as
compared
to
conventional
scanners.
We
investigated
optimized
CM
of
PCD-CT
at
low
animal
model.
Methods
Six
minipigs
(median
weight:
32.5
kg;
IQR:
29.8–34.6
kg)
underwent
thoracoabdominal
CTA
using
a
clinical
dual-source
70
kVp
with
three
scan
protocols:
(A)
reference
(100%
dose),
(B)
increased
(233%)
reduced
(56%)
dose,
(C)
(50%)
(141%)
dose.
CNR,
subjective
image
quality,
were
assessed,
statistical
analysis
including
Mann–Whitney
U
-test
Kruskal–Wallis
tests.
Results
CTDI
vol
was
1.7
mGy
(IQR:
1.5–1.8)
A,
4.3
3.8–4.7)
B,
0.9
0.8–1.0)
C
(
p
<
0.001).
volumes
16
mL
15–17)
10
8–10)
23
21–24)
C.
No
significant
differences
CNR
found
between
scans,
medians
26
24–28)
22–26)
24–30)
=
0.276).
Subjective
quality
similar
across
scans
0.342).
Conclusion
allows
substantial
reductions
dose
while
maintaining
stable
which
further
flexibility
individualized
protocols.
Relevance
statement
provides
high
great
optimization,
making
it
particularly
effective
applications
where
minimizing
exposure
priority.
Key
Points
imaging
photon
counting
(PCD)-CT
enables
flexible
optimization
strategies
(CTA).
The
remains
appropriate
adjustments
PCD-CT.
consistently
yields
diagnostic
even
or
doses.
Graphical
Language: Английский
Serial Change of Perivascular Fat Attenuation Index in a Case of Spontaneous Coronary Artery Dissection Involving the Proximal Left Coronary Artery
Internal Medicine,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 1, 2025
The
perivascular
fat
attenuation
index
(FAI)
has
been
recognized
as
a
cardiac
computed
tomography-based
(CCT)-based
biomarker
of
coronary
inflammation.
We
report
the
case
47-year-old
woman
with
acute
spontaneous
artery
dissection
(SCAD)
involving
proximal
left
(LCA),
who
underwent
FAI
three
times.
initial
CCT
scan
revealed
higher
values
in
dissected
LCA.
second
scan,
performed
8
days
later,
showed
persistence
value
only
circumflex
artery,
which
progression
stenotic
severity
and
myocardial
infarction
formation
were
found.
may
indicate
disease
deterioration
patients
SCAD.
Language: Английский
The pericoronary fat attenuation index in cardio-oncology: a promising imaging biomarker and a need for standardization
European Radiology,
Journal Year:
2025,
Volume and Issue:
unknown
Published: April 2, 2025
Language: Английский
Coronary CT angiography-derived pericoronary fat attenuation index: Post-mortem histopathological correlation in fatal plaques
Guaita J. Ocaña,
No information about this author
Katarzyna Michaud,
No information about this author
V. Magnin
No information about this author
et al.
International Journal of Cardiology,
Journal Year:
2025,
Volume and Issue:
unknown, P. 133388 - 133388
Published: May 1, 2025
Language: Английский
Intra-individual Differences in Pericoronary Fat Attenuation Index Measurements Between Photon-counting and Energy-integrating Detector Computed Tomography
Academic Radiology,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Dec. 1, 2024
Language: Английский
Response to ‘Prognostic value of lesion-specific pericoronary adipose tissue attenuation? Importantly, but not yet!’
European Heart Journal - Cardiovascular Imaging,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Dec. 10, 2024
Journal
Article
Corrected
proof
Response
to
'Prognostic
value
of
lesion-specific
pericoronary
adipose
tissue
attenuation?
Importantly,
but
not
yet!'
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access
S
E
van
Rosendael,
Rosendael
Department
Cardiology,
Leiden
University
Medical
Center,
Albinusdreef
2,
2333ZA
Leiden,
The
Netherlands
https://orcid.org/0000-0002-1111-7971
Search
for
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J
Bax
Corresponding
author.
E-mail:
[email
protected]
European
Heart
-
Cardiovascular
Imaging,
jeae319,
https://doi.org/10.1093/ehjci/jeae319
Published:
10
December
2024
history
Received:
04
Accepted:
and
typeset:
17
Language: Английский