Related Experiment Video
Updated: Jun 29, 2026

Fat-Water Phantoms for Magnetic Resonance Imaging Validation: A Flexible and Scalable Protocol
Published on: September 7, 2018
Experimental validation of Monte Carlo calculations with a voxelized Rando-Alderson phantom: a study on influence
Lara Struelens1, Filip Vanhavere, Kristien Smans
1Belgian Nuclear Research Centre (SCK * CEN), Radiation Protection, Dosimetry and Calibration, Boeretang, Mol, Belgium. lara.struelens@sckcen.be
Abstract:
The development and improvement of techniques for an accurate dose assessment in medical physics is an important task. In this study, we focus on the validation of Monte Carlo calculations, by comparing organ doses assessed experimentally with thermoluminescent detectors in the Rando-Alderson phantom with doses calculated for a voxelized model of the same phantom for some typical x-ray procedures. A detailed study has been performed to identify the key parameters that affect the determination of organ doses. Initially, TLD measurements were up to 65% higher than the calculated values. After the corrections made on TLD energy dependence, TLD angular dependence, material composition and field size and position, most differences between measurements and calculations are within 15%. For organs far away from the field the difference is about 30%.
Related Concept Videos
Radiological Investigation II: MRI and Ventilation Perfusion Scan
Magnetic Resonance Imaging (MRI) and Ventilation Perfusion Scans are two radiological investigations that offer detailed diagnostic images of the body, particularly lung structures.
MRI
MRI uses magnetic fields and radiofrequency signals to distinguish between normal and abnormal tissues. This technology provides a more detailed diagnostic image than CT scans, enabling it to characterize pulmonary nodules, stage bronchogenic carcinoma, and evaluate inflammatory activity in...
One-Compartment Open Model: Wagner-Nelson and Loo Riegelman Method for ka Estimation
On...
Computed Tomography
The technique was invented in the 1970s and is based on the principle that as X-rays pass through the body, they are absorbed or reflected at different levels. In the technique, a patient lies on a motorized platform while a computerized axial tomography (CAT) scanner rotates...
Model-Independent Approaches for Pharmacokinetic Data: Noncompartmental Analysis
One important characteristic of noncompartmental analyses is that drug exposure increases proportionally with increasing doses. This relationship...
Model Approaches for Pharmacokinetic Data: Distributed Parameter Models
The distributed parameter models are specifically designed to account for variations and differences in some drug classes. This model is particularly useful for assessing regional concentrations of anticancer or...
Estimation of the Physical Quantities

