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BeitragVerfasst: Mi, 31.05.2017 - 13:16 
Arzt / Ärztin
Arzt / Ärztin

Registriert: Fr, 24.05.2002 - 13:57
Beiträge: 1339
Geschlecht: männlich
Es liegen neu Veröffentlichungen zum EOS Röntgen vor. Man beachte die doch erheblich reduzierte Organdosis.:

Radiation dose of digital radiography (DR) versus micro-dose x-ray (EOS) on patients with adolescent idiopathic scoliosis
Steve C.N. Hui1, Jean-Philippe Pialasse1,3, Judy Y.H. Wong1, Tsz Ping Lam2, Bobby K.W. Ng2, Jack C.Y. Cheng2, Winnie C.W. Chu1
1Department of Imaging and Interventional Radiology, The Chinese University of Hong Kong, Shatin, Hong Kong SAR; 2Department of Orthopedics & Traumatology, The Chinese University of Hong Kong, Shatin, Hong Kong SAR; 3Department of Chiropractic, University of Quebec at Trois-Rivieres, Quebec, Canada
Correspondence: Winnie C.W. Chu

Introduction

Patients with Adolescent Idiopathic Scoliosis (AIS) frequently receive x-ray imaging for diagnosis and follow-up monitoring purposes. The ionizing radiation exposure has accumulated through their development stage and the effect of radiation to this young vulnerable group of patients is uncertain. To achieve the ALARA (as low as reasonably achievable) concept of radiation dose in medical imaging, a new implementation of radiography, the biplanar digital x-ray by the EOS system, has been adopted.

Objectives

To investigate the radiation dose difference between using micro-dose biplanar x-ray and conventional digital radiography on patients with AIS.

Methods

Fifty-one subjects with AIS were recruited from the outpatient clinic at the university hospital. 37 of them (Mean age: 17.2 ± 2.1; BMI: 19.1 ± 2.4; Cobb: 31.5¡ ± 11.1¡) underwent micro-dose biplanar x-ray with the EOS system and 14 (Mean age: 16.9 ± 3.9; BMI: 19.9 ± 4.1; Cobb: 26.2¡ ± 10.5¡) underwent conventional digital radiography for whole spine images at posterior-anterior view. Entrance-skin dose was measured using thermoluminescent dosimeters (TLD) at three regions (i.e. sternal notch, nipple line, symphysis pubis). Effective dose and organ dose were calculated by simulation using PCXMC 2.0. Data from two x-ray systems were compared using independent two-sample T-test and significance level at 0.05.

Results and discussion

Entrance-skin dose measured at sternal notch, nipple line and symphysis pubis were 25.8 ± 4.9, 27.1 ± 5.1 and 28.6 ± 6.4 (μGy) respectively from micro-dose biplanar x-ray, and 151.9 ± 43.9, 539.7 ± 204.9 and 771.2 ± 267.2 (μGy) respectively from conventional digital radiography. Entrance-skin dose from the micro-dose biplanar x-ray system was 5.9 - 27.0 times lower at various regions compared with conventional digital radiography. The calculated effective doses were 2.8 ± 0.5 (μSv) and 65.2 ± 18.5 (μSv) from micro-dose biplanar system and conventional digital radiography respectively. Patients with AIS underwent micro dose biplanar x-ray system received approximately 23 times less effective dose than those underwent conventional digital radiography. The organ dose at thyroid, lung and ovaries/testes regions were 0.84 ± 0.4, 5.8 ± 1.0, 2.4 ± 0.8 (μSv) respectively from the biplanar x-ray and 13.4 ± 2.7, 105.3 ± 33.9, 78.0 ± 30.2 (μSv) respectively from the conventional digital radiography. Patients with AIS underwent micro-dose biplanar x-ray received 16-31 times less organ dose compared to those underwent conventional digital radiography.

Conclusion and significance

Entrance-skin dose, effective dose and organ dose were statistically significantly lower in micro-dose biplanar x-ray compared with conventional digital radiography. As AIS patients require periodic x-ray follow up for surveillance of curve progression, clinical use of micro-dose bi-planar system is beneficial for these young patients to reduce the intake of ionizing radiation.

_________________
Dr. K. Steffan
http://www.mvz-sobernheim.de
http://www.spine-concept-sobernheim.de
Tel.06751-8560440


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BeitragVerfasst: Do, 01.06.2017 - 20:34 
aktives Mitglied
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Registriert: So, 18.12.2016 - 18:34
Beiträge: 67
Wohnort: Esslingen
Alter: 26
Geschlecht: weiblich
Diagnose: Idiopathische Skoliose
Therapie: Korsett im Alter von 12- 16, Rückengymnastik und Übungen, Schroth
OP 30.06.17, Korrekturspondylodese Th3-th11
Das klingt gut :top:


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BeitragVerfasst: Mi, 12.07.2017 - 08:33 
Newbie
Newbie

Registriert: Fr, 17.03.2017 - 16:54
Beiträge: 20
Geschlecht: männlich
Felissilvestriscatus hat geschrieben:
Das klingt gut :top:


und wie klingt das auf deutsch????


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