and Jan Žižka2
(1)
Department of Radiology, University Hospital Hradec Králové, Hradec Králové, Czech Republic
(2)
Department of Radiology Faculty of Medicine in Hradec Králové, University Hospital Hradec Králové Charles University in Prague, Hradec Králové, Czech Republic
A00: HRCT axial reformat
Axial plane:
Using an MPR (multi-planar reformat) 3D viewer, anterior and posterior aspects of the lateral semicircular canal are identified. Their connecting line defines the axial plane.
A01: HRCT axial reformat
ACP
air cell of the pyramid
GSS
groove of the sigmoid sinus
MAC
mastoid air cells
MCBS
mastoid cells bony septa
MCF
middle cranial fossa
OB
occipital bone
OMS
occipitomastoid suture
PCF
posterior cranial fossa
PMSTB
posteromedial surface of the temporal bone
SQP
squamous part of the temporal bone
A02: HRCT axial reformat
ACP
air cell of the pyramid
ASC
anterior semicircular canal
GSS
groove of the sigmoid sinus
MAC
mastoid air cells
MCBS
mastoid cells bony septa
MCF
middle cranial fossa
OB
occipital bone
OMS
occipitomastoid suture
PCF
posterior cranial fossa
PMSTB
posteromedial surface of the temporal bone
SQP
squamous part of the temporal bone
A03: HRCT axial reformat
ACP
air cell of the pyramid
ASC
anterior semicircular canal
GSS
groove of the sigmoid sinus
MAC
mastoid air cells
MCBS
mastoid cells bony septa
MCF
middle cranial fossa
OB
occipital bone
OMS
occipitomastoid suture
PCF
posterior cranial fossa
PMSTB
posteromedial surface of the temporal bone
SQP
squamous part of the temporal bone
A04: HRCT axial reformat
ACP
air cell of the pyramid
ASC
anterior semicircular canal
GSS
groove of the sigmoid sinus
MAC
mastoid air cells
MCBS
mastoid cells bony septa
MCF
middle cranial fossa
OB
occipital bone
OMS
occipitomastoid suture
PCF
posterior cranial fossa
PMSTB
posteromedial surface of the temporal bone
SQP
squamous part of the temporal bone
A05: HRCT axial reformat
ACP
air cell of the pyramid
ASC
anterior semicircular canal
GSS
groove of the sigmoid sinus
MA
mastoid antrum
MAC
mastoid air cells
MCBS
mastoid cells bony septa
MCF
middle cranial fossa
OB
occipital bone
OMS
occipitomastoid suture
PC
petromastoid canal
PCF
posterior cranial fossa
PMSTB
posteromedial surface of the temporal bone
SQP
squamous part of the temporal bone
A06: HRCT axial reformat
ASC
anterior semicircular canal
GSS
groove of the sigmoid sinus
MA
mastoid antrum
MAC
mastoid air cells
MCBS
mastoid cells bony septa
MCF
middle cranial fossa
OB
occipital bone
OMS
occipitomastoid suture
PC
petromastoid canal
PCF
posterior cranial fossa
PMSTB
posteromedial surface of the temporal bone
SQP
squamous part of the temporal bone
A07: HRCT axial reformat
ASC
anterior semicircular canal
GSS
groove of the sigmoid sinus
MA
mastoid antrum
MAC
mastoid air cells
MCBS
mastoid cells bony septa
MCF
middle cranial fossa
OB
occipital bone
OMS
occipitomastoid suture
PC
petromastoid canal
PCF
posterior cranial fossa
PMSTB
posteromedial surface of the temporal bone
PSC
posterior semicircular canal
SAF
subarcuate fossa
SQP
squamous part of the temporal bone
A08: HRCT axial reformat
AAA
aditus ad antrum
ASC
anterior semicircular canal
GSS
groove of the sigmoid sinus
MA
mastoid antrum
MAC
mastoid air cells
MCBS
mastoid cells bony septa
MCF
middle cranial fossa
OB
occipital bone
OMS
occipitomastoid suture
PC
petromastoid canal
PCF
posterior cranial fossa
PMSTB
posteromedial surface of the temporal bone
PSC
posterior semicircular canal
SQP
squamous part of the temporal bone
A09: HRCT axial reformat
AAA
aditus ad antrum
ASC
anterior semicircular canal
COC
common osseous crus
E
epitympanum
GSS
groove of the sigmoid sinus
MA
mastoid antrum
MAC
mastoid air cells
MCBS
mastoid cells bony septa
MCF
middle cranial fossa
OB
occipital bone
OMS
occipitomastoid suture
PCF
posterior cranial fossa
PCP
posterior clinoid process
PE
petrous part of the temporal bone
PSC
posterior semicircular canal
SQP
squamous part of the temporal bone
A10: HRCT axial reformat
AAA
aditus ad antrum
ASC
anterior semicircular canal
COC
common osseous crus
E
epitympanum
GSS
groove of the sigmoid sinus
MA
mastoid antrum
MAC
mastoid air cells
MCBS
mastoid cells bony septa
MCF
middle cranial fossa
OB
occipital bone
OMS
occipitomastoid suture
PCF
posterior cranial fossa
PCP
posterior clinoid process
PE
petrous part of the temporal bone
PSC
posterior semicircular canal
SQP
squamous part of the temporal bone
A11: HRCT axial reformat
AAA
aditus ad antrum
ASC
anterior semicircular canal
COC
common osseous crus
E
epitympanum
EOVA
external opening of the vestibular aqueduct
GSS
groove of the sigmoid sinus
MA
mastoid antrum
MAC
mastoid air cells
MCBS
mastoid cells bony septa
MCF
middle cranial fossa
OB
occipital bone
OMS
occipitomastoid suture
PCF
posterior cranial fossa
PCP
posterior clinoid process
PE
petrous part of the temporal bone
PSC
posterior semicircular canal
SQP
squamous part of the temporal bone
VAQ
vestibular aqueduct
A12: HRCT axial reformat
AAA
aditus ad antrum
AOA
anterior osseous ampulla
COC
common osseous crus
E
epitympanum
EOVA
external opening of the vestibular aqueduct
GSS
groove of the sigmoid sinus
MA
mastoid antrum
MAC
mastoid air cells
MCBS
mastoid cells bony septa
MCF
middle cranial fossa
PCF
posterior cranial fossa
PCP
posterior clinoid process
PE
petrous part of the temporal bone
PSC
posterior semicircular canal
SQP
squamous part of the temporal bone
VAQ
vestibular aqueduct
A13: HRCT axial reformat
AAA
aditus ad antrum
AOA
anterior osseous ampulla
COC
common osseous crus
E
epitympanum
EOVA
external opening of the vestibular aqueduct
GSS
groove of the sigmoid sinus
IAC
internal auditory canal
MA
mastoid antrum
MAC
mastoid air cells
MCBS
mastoid cells bony septa
MCF
middle cranial fossa
PCF
posterior cranial fossa
PCP
posterior clinoid process
PE
petrous part of the temporal bone
PSC
posterior semicircular canal
SQP
squamous part of the temporal bone
VAQ
vestibular aqueduct
A14: HRCT axial reformat
AAA
aditus ad antrum
AOA
anterior osseous ampulla
COC
common osseous crus
E
epitympanum
EOVA
external opening of the vestibular aqueduct
GSS
groove of the sigmoid sinus
IAC
internal auditory canal
IAM
internal auditory canal – meatus
LOA
lateral osseous ampulla
LSC
lateral semicircular canal
MA
mastoid antrum
MAC
mastoid air cells
MCBS
mastoid cells bony septa
MCF
middle cranial fossa
PCF
posterior cranial fossa
PCP
posterior clinoid process
PE
petrous part of the temporal bone
PSC
posterior semicircular canal
SOC
simple osseous crus
SQP
squamous part of the temporal bone
VAQ
vestibular aqueduct
A15: HRCT axial reformat
AAA
aditus ad antrum
COC
common osseous crus
E
epitympanum
EOVA
external opening of the vestibular aqueduct
GSS
groove of the sigmoid sinus
IAC
internal auditory canal
IAM
internal auditory canal – meatus
LOA
lateral osseous ampulla
LSC
lateral semicircular canal
MA
mastoid antrum
MAC
mastoid air cells
MCBS
mastoid cells bony septa
MCF
middle cranial fossa
PCF
posterior cranial fossa
PCP
posterior clinoid process
PLSC
prominence of the lateral semicircular canal
PE
petrous part of the temporal bone
PSC
posterior semicircular canal
SOC
simple osseous crus
SQP
squamous part of the temporal bone
VAQ
vestibular aqueduct
VER
vestibule – elliptical recess
A16: HRCT axial reformat
AAA
aditus ad antrum
COC
common osseous crus
E
epitympanum
EOVA
external opening of the vestibular aqueduct
GSS
groove of the sigmoid sinus
IAC
internal auditory canal
IACF
internal auditory canal – fundus
KS
Koerner’s septum
LOA
lateral osseous ampulla
LSC
lateral semicircular canal
MA
mastoid antrum
MAC
mastoid air cells
MCBS
mastoid cells bony septa
MCF
middle cranial fossa
PCF
posterior cranial fossa
PCP
posterior clinoid process
PLSC
prominence of the lateral semicircular canal
PE
petrous part of the temporal bone
PSC
posterior semicircular canal
SOC
simple osseous crus
SQP
squamous part of the temporal bone
VAQ
vestibular aqueduct
VER
vestibule – elliptical recess
A17: HRCT axial reformat
BI
body of incus
EOVA
external opening of the vestibular aqueduct
FNA
facial nerve area
FNCLS
facial nerve canal – labyrinthine segment
GSS
groove of the sigmoid sinus
IAC
internal auditory canal
IMJ
incudomallear joint
ISP
incus – short process
KS
Koerner’s septum
LPE
lateral posterior epitympanum
MA
mastoid antrum
MAC
mastoid air cells
MCBS
mastoid cells bony septa
MCF
middle cranial fossa
MH
malleus – head
MPE
medial posterior epitympanum
PCF
posterior cranial fossa
PCP
posterior clinoid process
PE
petrous part of the temporal bone
PSC
posterior semicircular canal
SOC
simple osseous crus
SQP
squamous part of the temporal bone
SVA
superior vestibular area
VAQ
vestibular aqueduct
VER
vestibule – elliptical recess
A18: HRCT axial reformat
AE
anterior epitympanum
BI
body of incus
EOVA
external opening of the vestibular aqueduct
FNA
facial nerve area
FNCLS
facial nerve canal – labyrinthine segment
GSS
groove of the sigmoid sinus
IAC
internal auditory canal
IMJ
incudomallear joint
ISP
incus – short process
KS
Koerner’s septum
LPE
lateral posterior epitympanum
MA
mastoid antrum
MAC
mastoid air cells
MCBS
mastoid cells bony septa
MCF
middle cranial fossa
MH
malleus – head
MPE
medial posterior epitympanum
PCF
posterior cranial fossa
PCP
posterior clinoid process
PE
petrous part of the temporal bone
PSC
posterior semicircular canal
SQP
squamous part of the temporal bone
SVA
superior vestibular area
VAQ
vestibular aqueduct
VER
vestibule – elliptical recess
A19: HRCT axial reformat
AE
anterior epitympanum
BI
body of incus
CMT
cochlea – middle turn
FNCLS
facial nerve canal – labyrinthine segment
FNCTS
facial nerve canal – tympanic segment
GSS
groove of the sigmoid sinus
IAC
internal auditory canal
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