Medical Physics: Tenth Mexican Symposium on Medical Physics Mexico City, Mexico 17-19 March 2008

by Corral, Gerardo Herrera; Entina, Luis Manuel Montano

• ISBN13: 9780735405561
• ISBN10: 0735405565
• Edition: 1st
• Format: Hardcover
• Copyright: 2008-10-03
• Publisher: AMER INST OF PHYSICS

Summary

During the X Mexican Symposium on Medical Physics a special session was dedicated to Hadron Therapy. The technology of accelerators has been applied to cancer therapy for many years. High energy electrons are used to treat tumors, but the energy deposition in living tissue is not optimal considering that it is not focused on the desired volume. The use of protons offers a better option to irradiate tumors. Protons lose most of their energy at the end of their penetration depth. This opens a new technology that makes use of hadrons to get a more precise dose delivery. Topics like MRI, Photoacustic Techniques, Biomagnetism, etc. are discussed as well.

Table of Contents

How to Move from Conventional Radiotherapy to Hadrontherapy	p. 3
Radiobiology of Hadrons	p. 7
Development of Hadron Therapy for Cancer Treatment in Europe	p. 12
Perspectives of Hadron Therapy in Mexico	p. 17
The Role of Non-Standard PET Radionuclides in the Development of New Radiopharmaceuticals	p. 25
Using EEG/MEG Data of Cognitive Processes in Brain-Computer Interfaces	p. 31
Biomagnetic Signals of the Large Intestine	p. 37
Mexican Society of Bioelectromagnetism	p. 45
Elastography: A New Ultrasound and MRI Procedure	p. 51
Studying Multiple Sclerosis with Magnetic Resonance	p. 60
Application of the Pulsed Photoacoustic Spectroscopy in Biomedicine	p. 70
Biomedical Applications of Terahertz Spectroscopy: A Brief Review	p. 79
Comparative Analysis of Different Measurement Techniques for MLC Characterization: Preliminary Results	p. 85
Using Electromagnetic Microwave Field Combined with Laserotherapy in Postoperative Period of Patients with Purulent- Inflammatory Diseases of the Hand in Outpatient Clinic	p. 89
Implementation of a Lateral TBI Protocol in a Mexican Cancer Center	p. 93
Study of Laser Reflectivity on Skin	p. 98
Contrast-Medium-Enhanced Digital Mammography: Contrast vs. Iodine Concentration Phantom Calibration	p. 101
Diffuse Reflectance Spectroscopy of Human Skin Using a Commercial Fiber Optic Spectrometer	p. 105
Final Stage in the Design of a Boron Neutron Capture Therapy Facility at CAEDEN, Cuba	p. 108
Auditory Evoked Responses in Neonates by MEG	p. 114
Possible Mechanism of Action of the Electromagnetic Fields of Ultralow Frequency on G-Protein	p. 118
Cells Tracking by Snakes	p. 124
Construction of an Ionization Chamber for the Measurement of Dose of Low Energy X-Rays	p. 131
Comparison of MCNPX and GEANT4 to Predict the Contribution of Non-Elastic Nuclear Interactions to Absorbed Dose in Water, PMMA, and A150	p. 136
Relative Efficiency of TLD-100 Exposed to X-Rays	p. 141
"In vivo" Dosimetry in Tangential and Axilosupraclavicular Radiation Fields for Breast Cancer Postmastectomy	p. 145
"In vivo" Dosimetry in High Dose Rate Brachytherapy for Cervical Cancer Treatments	p. 149
Two-Slotted Surface Coil Array for Magnetic Resonance Imaging at 4 Tesla	p. 152
Coil Array Design Inspired on the Kepler's Lenten Pretzel	p. 155
Mid-Range Coil Array for Magnetic Resonance Imaging of Small Animals	p. 157
First Tests for the Detection of the LINAC Irradiation Field Using PIN Diodes	p. 161
Dosimetry and Image Quality in Control Studies in Computerized Tomography Realized to Paediatric Patients	p. 164
Comparative Study of Image Enhancement Algorithms for Digital and Film Mammography	p. 168
Finite-Element Electromagnetic Simulation of a Volume Coil with Slotted End-Rings for Magnetic Resonance Imaging	p. 172
Numerical Study of a Crossed Loop Coil Array for Parallel Magnetic Resonance Imaging	p. 176
On the Applications of IBA Techniques to Biological Samples Analysis: PIXE and RBS	p. 179
Analysis of Electronic Densities and Integrated Doses in Multiform Glioblastomas Stereotactic Radiotherapy	p. 183
Pediatric Computed Tomography. Radiation Dose in Abdominal Studies	p. 186
Immune Response to Electromagnetic Fields through Cybernetic Modeling	p. 189
Ultrastructural Study on Ultra-Low Frequency Electromagnetic Fields and Transfer Factor Effects on Skin Ulcers	p. 195
Pilot Quality Control Program for Audit RT External Beams at Mexican Hospitals	p. 203
K[subscript Air] and H*(10) Rate Constants for Gamma Emitters	p. 205
Mammography X-Ray Spectra Simulated with Monte Carlo	p. 208
Monte Carlo Simulation in the Optimization of a Free-Air Ionization Chamber for Dosimetric Control in Medical Digital Radiography	p. 212
Digital Radiography of Mammographic Phantoms and Biologic Samples Using a 64 Microstrips Crystalline Silicon Detector Coupled to the RX64 ASIC	p. 215
Simulation of a PET System and Study of Some Geometry Parameters	p. 219
Dosimetric Verification and Validation of Conformal and IMRT Treatments Fields with an Ionization Chamber 2D-Array	p. 222
Petal Resonator Surface Coil with a Circular Envelope for High Field Magnetic Resonance Imaging	p. 225
Development of a 512-Channel Module for Digital X-Ray Imaging Systems with Silicon Strip Detectors	p. 229
Small Radiation Beam Dosimetry for Radiosurgery of Trigeminal Neuralgia: One Case Analysis	p. 233
Initial Image Quality and Clinical Experience with New CR Digital Mammography System: A Phantom and Clinical Study	p. 237
Effects of Electromagnetic Stimulation on Cell Density and Neural Markers in Murine Enteric Cell Cultures	p. 240
Commissioning Procedures for Mechanical Precision and Accuracy in a Dedicated LINAC	p. 243
Solid Test Meal to Measure the Gastric Emptying with Magnetogastrography	p. 246
Preprocessing and Analysis of Digitized ECGs	p. 249
Raman Spectroscopy: A New Proposal for the Detection of Leukemia Using Blood Samples	p. 252
New Results in Magnitude and Sign Correlations in Heartbeat Fluctuations for Healthy Persons and Congestive Heart Failure (CHF) Patients	p. 255
Prediction of Glucose Concentration by Impedance Phase Measurements	p. 259
Review of Current Techniques to Analyze Diffuse Reflectance Spectra for Diagnosis of Skin Lesions	p. 262
Photoacoustic Characterization of Human Skin Phantom with Superficial Anomalies: Preliminary Results	p. 265
Passive Viscoelastic Properties of Costameres in EDL Skeletal Muscle in Normal and Dystrophin Null Mice	p. 268
Induced Currents in a Rat's Brain Due a Radio Frequency Fields: Numerical Simulation with a Pixel Model	p. 272
High Velocity Videoculography to Determination of the Pupil Dynamics	p. 276
Propulsion Velocity and ETT on Biomagnetic Assessment of the Human Esophagus	p. 280
Induced Protoporphyrin IX Accumulation by the [delta]-Aminolevulinic Acid in Bacteria and Its Potential Use in the Photodynamic Therapy	p. 283
Effects of Extremely Low Frequency Electromagnetic Fields on Vascular Permeability of Circumventricular Organs in the Adult Rat	p. 288
Treatment of Diabetic Foot Ulcers through Systemic Effects of Extremely Low Frequency Electromagnetic Fields	p. 291
Efficiency of the Photodynamic Therapy Using Gold Nanoparticles (np-Au) and PpIX Induced and Not Induced	p. 295
Kinetic of the Intracellular Incorporation of New Phthalocyanines Synthesized in Mexico and Its Potential as Photosensibilizers in the Photodynamic Therapy	p. 299
Registration of Intravascular Pressure Curves: Magneto-Mechanical Evaluation	p. 302
Application of the Optoacoustic Technique to Obtain Depth Profiles of Phantoms of Soft Tissues	p. 306
Author Index	p. 309
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