HRCT Axial Reformat

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

 





A326137_1_En_2_Fig1_HTML.jpg



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.


A326137_1_En_2_Fig2_HTML.jpg



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


A326137_1_En_2_Fig3_HTML.jpg



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


A326137_1_En_2_Fig4_HTML.jpg



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


A326137_1_En_2_Fig5_HTML.jpg



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


A326137_1_En_2_Fig6_HTML.jpg



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


A326137_1_En_2_Fig7_HTML.jpg



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


A326137_1_En_2_Fig8_HTML.jpg



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


A326137_1_En_2_Fig9_HTML.jpg



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


A326137_1_En_2_Fig10_HTML.jpg



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


A326137_1_En_2_Fig11_HTML.jpg



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


A326137_1_En_2_Fig12_HTML.jpg



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


A326137_1_En_2_Fig13_HTML.jpg



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


A326137_1_En_2_Fig14_HTML.jpg



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


A326137_1_En_2_Fig15_HTML.jpg



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


A326137_1_En_2_Fig16_HTML.jpg



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


A326137_1_En_2_Fig17_HTML.jpg



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


A326137_1_En_2_Fig18_HTML.jpg



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


A326137_1_En_2_Fig19_HTML.jpg



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


A326137_1_En_2_Fig20_HTML.jpg



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

Oct 24, 2016 | Posted by in MAGNETIC RESONANCE IMAGING | Comments Off on HRCT Axial Reformat
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