A
absent bow tie sign(2.11.7)
accordion sign(2.6.13)
acute angle sign(2.1.34)
air arrowhead sign(2.6.9)
air bronchiologram sign(2.3.25)
air bronchogram sign(2.3.25)
air crescent sign(2.3.13)
air dome sign(3.48)
angiographic string sign(3.43)
anteater nose sign(1.5.2,3.41)
anterior tibial translocation sign(2.11.9)
apple core sign(3.26)
arcuate sign(3.12)
arrowhead sign(2.6.3,2.6.9)
aura sign(2.1.18)
B
bare area sign(2.3.27)
basilar artery encasing sign(2.1.20)
beaded septum sign(2.3.1)
beaded sign(2.7.4)
beak sign(2.6.11)
bird′s beak sign(3.19)
black pleural line(2.3.8)
bowel wall fat halo sign(2.6.4)
bridging vascular sign(2.10.3)
bright dot sign(2.7.15)
bronchovascular convergence sign(2.3.31)
bubble-like lucency sign(2.3.12)
bulb sign(2.7.14)
butterfly-like lesions(2.1.11)
button sequestrum sign(2.11.10)
C
C sign(3.49)
calcified reticulate rind sign(2.6.6)
calyceal crescent sign(3.31)
caput medusa sign(2.1.39)
celery stalk sign(2.11.11)
centipede sign(2.6.3)
champagne glass sign(3.11)
central arrow head sign(2.7.37)
central dots sign(2.7.36)
cluster sign(2.7.6)
coarse spicules sign(2.3.17)
cobra head sign(3.28)
coffee bean sign(3.19)
collar sign(2.6.10)
coin-on-edge appearance(2.11.10)
concentric-ring sign(2.6.16)
consolidation with multiple cystic lesions(2.3.6)
comb sign(2.6.14)
comet tail sign(2.3.10,2.9.2)
comma sign(2.6.3)
cord sign(2.1.9)
cord or dense triangle sign(2.1.9)
corkscrew sign(3.1)
cortical rim sign(2.7.20)
cortical ring sign(3.35)
crazy paving appearance(2.3.23)
crescent sign(2.4.3,2.11.18)
CT arrowhead sign(2.6.9)
Cupid's bow sign(1.5.2)
cyclops lesion(2.11.3)
cyst with a dot appearance(2.1.16)
D
daughter cyst sign(2.7.18)
deep sulcus sign(3.30)
dense artery sign(2.1.47)
dense middle cerebral artery sign(2.1.47)
dependent viscera sign(2.6.10)
diaphragm sign(2.3.27)
disappearing basal ganglia sign(2.1.21)
displaced crus sign(2.3.27)
disproportionate fat stranding sign(2.6.3)
distal hyperattenuating middle cerebral artery sign(2.1.7)
dog leg sign(3.14)
donut sign(2.6.2)
double bubble sign(3.34)
double duct sign(3.33)
double halo sign(2.6.15)
double-line sign(1.3.3,2.11.16)
double lumen sign(2.4.5)
double oreo cookie sign(2.11.13)
double peak sign(2.10.4)
double posterior cruciate ligament sign(2.11.15)
double rail sign(2.4.4)
double ring sign(2.2.6)
double-wall sign(2.3.21,3.32)
double target sign(2.7.2)
draped aorta sign(2.4.8)
drooping lily sign(3.40)
duct-penetrating sign(2.7.31)
dural tail sign(1.3.5,2.1.30)
duodenal wind sock sign(3.29)
E
elbow fat pad sign(3.45)
empty delta sign(2.1.26)
ependymal dot-dash sign(2.1.37)
eye of the tiger sign(1.7.4,2.1.17)
F
faceless kidney(2.9.4)
fairy ring sign(2.3.3)
falciform sign(3.32)
fallen fragment sign(3.15)
fallen lung sign(3.9)
false falx sign(2.1.23)
fascicular sign(2.11.1)
fat-blood interface sign(3.45)
fat C2sign(3.25)
fat halo sign(2.6.4)
fat ring sign(2.6.19)
FBI sign(3.44)
feeding vessel sign(2.3.7)
finger-in-glove appearance(2.3.20)
flat cava sign(2.4.1)
flipped fragment sign(2.11.2)
flipped meniscus sign(2.11.2)
floating mass in the cyst(2.10.1)
floating membranes sign(2.7.21)
floating teeth(2.11.10)
floating viscera sign(3.24)
flow-void sign(2.11.8)
fluid bronchogram sign(2.3.19)
fluid sign(2.11.23)
focal hepatic hot spot sign(2.7.12)
fogging effect(2.1.28)
football sign(3.48)
fragment invagination sign(3.15)
frosting sign(2.1.40)
G
garland sign(2.7.11)
gastrointestinal string sign(3.38)
goblet sign(3.11)
golden S sign(1.4.1)
golf ball-on-tee sign(3.10)
grey-white matter interface displacement(2.1.19)
ground-glass opacity(GGO)(2.3.18)
gyri gathering sign(2.1.29)
H
hamburger sign(1.5.2,2.11.18)
halo sign(2.7.32)
hemosiderin rim(2.1.43)
hepatic edge sign(3.32)
high-attenuating crescent sign(2.4.3)
HMCA Sign(2.1.7,2.1.47)
hoop sign(2.1.43)
hot cross bun sign(2.1.38)
hummingbird sign(2.1.14)
hyperattenuating crescent sign(2.4.3)
hyperattenuating MCA sign(2.1.47)
hyperattenuating ring sign(2.6.8)
hyperdense MCA sign(2.1.47)
hyperdense middle cerebral artery sign(2.1.47)
hyperdense posterior cerebral artery sign(2.1.47)
hyperintense rim sign(2.8.1)
I
iliac hyperdense line(3.27)
incomplete border sign(3.3)
incomplete ring sign(1.5.3,2.11.4)
infundibulum sign(2.1.27)
interface sign(2.3.27)
interhemispheric fissure sign(2.1.3)
interpeduncular fossa sign(2.1.24)
intramural tracking sign(3.2)
intravertebral vacuum cleft sign(3.47)
intravertebral vacuum sign(3.47)
inverted Napoleon′s hat sign(3.7)
ivory vertebra sign(3.42)
ivy sign(2.1.4)
J
J sign (2.11.22)
K
keyhole sign(2.5.1)
L
lateral capsular sign(3.4)
lateral femoral notch sign(3.36)
lateral ventricle depressing sign(2.1.31)
light bulb sign(2.7.14)
linguine sign(2.5.1)
little ventriculus sign(2.1.45)
live capsule depressed sign(2.7.8)
lobulation sign(2.3.5)
lollipop sign(2.7.3)
loss of the insular ribbon(2.1.10)
lotus floated on water(2.3.22)
low density peripheral ring(2.7.27)
luft sichel sign(3.20)
M
mosaic pattern(2.7.29)
MCA dot sign(2.1.7)
medusa head sign(2.1.39)
microcalcifications sign(3.39)
micro-ring sign(2.1.1)
middle cerebral artery dot sign(2.1.7)
middle cerebral artery(MCA)susceptibility sign(2.1.8)
misty mesentery sign(2.6.5)
molar tooth sign(2.1.25)
mosaic sign(2.3.16)
mother-in-law sign(2.7.33)
MR fluid sign(2.11.23)
mucous bronchogram sign(2.3.19)
multi-nodule accumulation sign(2.3.2)
musculoskeletal crescent sign(2.11.18)
N
naked facet sign(2.11.17)
napkin ring sign(3.26)
narrow base sign(2.1.34)
noose sign(2.5.1)
northern exposure sign(3.5)
O
obscuration sign of lentiform nucleus(2.1.12)
onion skin appearance(2.7.5)
ovarian vascular pedicle sign(2.10.2)
ox-eye sign(2.7.19)
P
peaking sign(2.1.15)
peach-tip sign(2.3.24)
pearl necklace sign(2.7.34)
pearl ring sign(1.5.2)
peripheral hypointensity sign(2.1.22)
peripheral washout sign(2.5.2,2.7.28)
perirenal cobwebs sign(2.9.6)
perirenal halo sign(2.7.25)
periportal halo sign(2.7.17)
periportal tracking sign(2.7.16)
pleural indentation sign(2.3.28)
pleural retraction sign(2.3.28)
positive bronchus sign(2.3.32)
posterior vertebral scalloping sign(2.11.21)
progressive enhancement sign(2.2.2)
pseudocapusule sign(2.9.3)
pseudokidney sign(2.6.2)
pseudopodium sign(2.3.11)
pseudotumors sign(3.46)
pulvinar sign(2.1.32)
pupil-like sign(2.7.26)
R
radial bands sign(2.1.33)
Rigler sign(3.32)
renal halo sign(2.7.24)
reverse rim sign(2.7.20)
reversed halo sign(2.3.3)
reversal sign(2.1.13)
ring around the artery sign(3.8)
ring sign(2.6.8,2.6.16)
rugby sign(3.48)
S
sandwich sign(2.6.5,2.6.12)
sagittal sinus sign(2.1.36)
salt and pepper sign(2.2.1)
sarcoid galaxy sign(2.3.26)
scimitar sign(3.37)
scottie dog with a collar(3.13)
secondary cleft sign(2.11.5)
sentinel clot sign(2.7.23)
serrated beak sign(2.6.11)
serrated sign(2.3.11)
shading sign(2.10.5)
signet ring sign(1.5.2,2.3.33,3.10)
silhouette sign(3.21)
small-bowel feces sign(2.6.17)
skip lesions(1.5.3)
skip metastases(1.5.3)
soft rattan sign(2.7.22)
soft tissue rim sign(2.9.5)
spiculated sign(2.3.11)
spicular sign(3.23)
split fat sign(2.11.1)
split pleura sign(2.3.29)
spoke wheel sign(2.6.7,2.9.1)
spongiform gas bubbles(1.5.1,2.6.6)
spur sign(3.22)
square sign(2.3.4)
straight border sign(2.7.9)
straight line sign(2.7.35)
string of beads sign(2.4.2,3.46)
string of pearls sign(3.46)
subpleural line(2.3.30)
sugarcoating sign(2.1.40)
swirl sign(2.1.46,2.6.18,2.11.19)
T
target sign(2.1.1,2.7.1,2.7.2,2.11.1)
target or bull′s eye appearance(2.1.16)
tattoo sign(3.6)
tau sign(1.5.2,2.1.42)
teardrop superior mesenteric vein sign(2.7.7)
tendon sign(2.2.3)
Terry Tomas sign(1.5.2,3.35)
thick rim sign(2.7.26)
threads and streaks sign(2.4.6)
tortoise shell sign(2.7.10)
tram-track sign(2.1.5)
tramline sign(2.3.33)
transparent ring sign(2.7.27)
tree-in-bud sign(2.3.20)
tree-in-bud pattern(2.3.20)
triangular pattern(2.1.35)
triangle sign(3.32)
tuft sign(2.1.6)
two-bow sign(2.3.22)
V
vacuole sign(2.3.12)
vascular convergence sign(2.3.31)
vessel convergence sign(2.3.31)
V shape sign(2.2.7)
W
water lily sign(1.5.2,2.3.22)
wedge-shaped sign(2.7.30)
wide bridge sign(2.3.24)
wide canal sign(2.11.6)
white matter buckling sign(1.3.3,2.1.2)
white matter collapse sign(2.1.2)
Y
Yin-Yang sign(2.4.7)
yo-yo on a string sign(2.11.12)
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