The applications and values of the eos imaging system

How can X-ray images be used more and more effectively like a full-body X-ray?... The conventional X-ray machine The process of lower limb stitching... Plain Stitching stitching room DR

THE APPLICATIONS AND VALUES

OF THE EOS IMAGING SYSTEM

-MEDIC MEDICAL CENTER- VIETNAM

Dr Cam Van Pham Thi X-ray Radiologist, MEDIC polyclinic, VietNam

I Overview of full-body skeletal imaging

II Beneficial comparison

1 Radiation dose

2 Quality of images 2.1 Length of view

2.2 Diagnostic imaging

2.3 Measurement

2.4 3D imaging III Pitfall comparison

1 Motion Artifact

2 Artifact from metal bodies

IV Cases of EOS Applications in Viet Nam

CONTENTS:

What do you think when you see this image?

Methods for quantitative evaluation of axial vertebral rotation [21] Cobb (A), Nash and Moe (B), Stokes (C), and

Perdriolle (D)

Axial balance Frontal and sagittal balance

How can X-ray images be used more and more effectively like a full-body

X-ray?

The conventional

X-ray machine

The process of lower limb stitching

STITCHING ROOM DR

Full-leg / full-spine image stitching, a new and accurate CR-based imaging technique P Dewaele, P Vuylsteke, S Van de Velde, E Schoeters

I.2 FULL-SPINE FROM THE LONGTAIL DR

LENGTH OF 42 X 17 INCH =108 X43 CM

Plain Stitching <–> stitching room DR

or Longtail DR Comparison

The Longtail DR lower limb images

I.3 THE EOS IMAGING

GEORGES CHARPAK’S XENON MULTIWIRE PROPORTIONAL CHAMBER

EOS provides a true-size image

THE EOS IMAGING MACHINE

STER EOS SOFTWARE

Fig 3

The EOS radiolucent chair was used for patients who cannot stand

II BENEFICIAL COMPARISON

II.1 RADIATION DOSE

https://www.radiologyinfo.org/en/info/safety-xray

“as low as reasonably achievable“

II.2 LENGTH OF VIEW

Max length

of view

spine or lower limbs

175cm

II.3 THE WEIGHT-BEARING STANDING POSITION

Lying CT scan

dislocation appears only in the standing position

Standing EOSStanding cervical X-ray Cervical spine CT

Knee plain X-ray

II.4 Accuracy Measurement

II.5.1 MSCT 3D MODELS OF FULL SPINE

Presurgery full spine 3D CT reconstructions

the thoracolumbar spine on a CT scan

(3D reconstruction),

II.5.2 EOS 3D MODELS OF THE LOWER LIMBS

III PITFALL COMPARISON

III.1 Motion Artifacts

III.1.1 X-ray Motion Artifact

Unshape images

III.1.2 CT Motion Artifact

https://radiopaedia.org/articles/motion-artifact-2

Step artifact in the sternal body due to breathing artifact.

CT brain with severe motion artifact

III.1.3 EOS Motion Artifact The 1st doing The 2nd doing

EOS Motion Artifact

pseudoCobb angle

Poking ribs

No shifting end plates

EOS Motion Artifact Plain X-ray

pseudotumor

III.2 The radiopaque object Artifacts

III.2.1 The Conventional X-ray Radiopaque Object

III.2.2 The CT radiopaque

Object

Halo line around metal

bodies

III.2.3 The EOS radiopaque Object

Without “IMPLANT”

function

Radiograph of the right hip in a 75-year-old

woman with a painful total hip prosthesis painful total hip prosthesis a 67-year-old man with a

DIFFERENT DIAGNOSTICS

Stitching Longtail DR CT scan EOS

Nonmoving 3 seconds x No parts 3 seconds 5 -10 seconds 10-20 seconds

4 Magnification exaggeration exaggeration Scale 1:1 Scale 1:1

Worked in Viet Nam since 2014, providing care for over 40,000 patients, including:

• 25,000 full-body cases,

• 35,000 full spine cases,

• 10,000 full lower limb cases,

• 10 full upper limb cases

• and 10 standing pelvimetry cases

IV Some Cases of EOS Applications in Viet Nam

A female 69 yo with spinal degeneration

the Bending test and full spinal EOS

A female 12yo with thoracolumbar Scoliosis

Sitting spinal EOS images of a female 27 yo, thoracolumbar Scoliosis before and after surgery

Pelvimetry assessment of the 22-year-old pregnant woman

A Female, 24 years old

Full upper limb EOS was checked

The left upper limb axis is varus

The functional lengths of the upper limbs are almost the same.

5 Jump up to:2.0 2.1 2.2 2.3"Pelvimetry by Three-Dimensional Computed Tomography in Non-Pregnant

Multiparous Women Who Delivered Vaginally" Polish Journal of Radiology

6 https://www.radiologyinfo.org/en/info/safety-xray

7 a 67-year-old man with painful total hip prosthesis, Catherine Cyteval

8 Concurrent Scoliosis and Dentofacial Anomaly: A Case Report

9 IMAGES IN FORENSICS Lethal mesenteric perforation by osteophytes after bluntabdominal traumaArnaud Le Gallo1&Christophe Loire1&Maisy Lossois2&Pierre-Antoine Peyron2

10 https://radiopaedia.org/articles/motion-artifact-2

THANK YOU FOR YOUR ATTENTION