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Special Section Papers

Effective Dose Reduction in Lateral Lumbar Spine Diagnostic Radiography Using X-Ray Tube Heel Effect

[+] Author and Article Information
Avi Ben-Shlomo

Radiation Safety Division,
Soreq NRC,
Tel Aviv 61070, Israel

Gabriel Bartal

Department of Medical Imaging,
Meir MC,
Kfar Saba 4428164, Israel

Morris Mosseri

Cardiology Division,
Meir MC,
Kfar Saba 4428164, Israel

Shay Shabat

Department of Orthopedic Surgery,
Spinal Care Unit,
Meir MC,
Kfar Saba 4428164, Israel

Manuscript received June 12, 2016; final manuscript received April 11, 2017; published online May 25, 2017. Assoc. Editor: Jean Koch.

ASME J of Nuclear Rad Sci 3(3), 030917 (May 25, 2017) (2 pages) Paper No: NERS-16-1058; doi: 10.1115/1.4036462 History: Received June 12, 2016; Revised April 11, 2017

The study aimed to determine how the effective dose (ED) in lumbar spine X-ray examinations is influenced by patient positioning considering the X-ray tube heel effect. The study used Monte Carlo simulation of the effective dose. Using the heel effect, positioning of the patient in the head to anode direction reduces the effective dose by 5% when compared with the head to cathode positioning.

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Figures

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Fig. 1

Division of adult lumbar spine beam width into 11 slices

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Fig. 2

X-ray tube heel effect. Beam profile along the anode–cathode axis for FSD of 100 cm and beam width of 30 cm.

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Fig. 3

The contribution of each slice of the beam in adult LT LAT lumbar spine examination to ED in HTA and HTC positioning

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