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collimators (108) 108
using diaphragms, collimators (107) 107
radiology, nuclear medicine & medical imaging (104) 104
index medicus (96) 96
radiation therapy (90) 90
scintigraphy (90) 90
dosimetry (89) 89
radiotherapy (67) 67
humans (64) 64
multileaf collimators (53) 53
phantoms (52) 52
60 applied life sciences (51) 51
cancer (47) 47
dosimetry/exposure assessment (47) 47
phantoms, imaging (47) 47
radiotherapy dosage (47) 47
biological material, e.g. blood, urine; haemocytometers (43) 43
therapeutic applications, including brachytherapy (42) 42
dose‐volume analysis (39) 39
linear accelerators (39) 39
digital computing or data processing equipment or methods, specially adapted for specific applications (36) 36
photons (34) 34
radiation doses (34) 34
radiation protection and dosimetry (34) 34
algorithms (33) 33
radiology and nuclear medicine (33) 33
medical imaging (31) 31
intensity modulated radiation therapy (30) 30
accuracy (29) 29
image data processing or generation, in general (29) 29
medical image processing (27) 27
monte carlo methods (27) 27
radiotherapy planning, computer-assisted - methods (27) 27
field size (26) 26
monte carlo method (26) 26
radiotherapy, intensity-modulated - methods (26) 26
tumours (25) 25
equipment design (24) 24
imrt (24) 24
medical treatment planning (24) 24
neoplasms (24) 24
computed tomography (23) 23
optimization (22) 22
radiation dose distributions (22) 22
lungs (21) 21
images (20) 20
patients (20) 20
system (20) 20
biomedical equipment (19) 19
calibration (19) 19
male (19) 19
physics (19) 19
quality assurance (19) 19
radiation treatment (19) 19
planning (18) 18
reconstruction (18) 18
computerised tomographs (17) 17
computerised tomography (17) 17
image sensors (17) 17
radiation dosage (17) 17
radiotherapy, intensity-modulated - instrumentation (17) 17
basic electric elements (16) 16
biomedical radiography (16) 16
computer simulation (16) 16
electricity (16) 16
feasibility studies (16) 16
image reconstruction (16) 16
lung (16) 16
measuring radioactive content of objects, e.g. contamination (16) 16
single photon emission computed tomography (16) 16
software (16) 16
collimation (15) 15
delivery (15) 15
devices using stimulated emission (15) 15
errors (15) 15
ionization chambers (15) 15
models, biological (15) 15
radiation-therapy (15) 15
radiometry (15) 15
radiosurgery (15) 15
radiotherapy planning, computer-assisted (15) 15
simulation (15) 15
beams (14) 14
medical image reconstruction (14) 14
motion (14) 14
particle accelerators (14) 14
performance (14) 14
reproducibility of results (14) 14
time factors (14) 14
verification (14) 14
brain (13) 13
comparative evaluations (13) 13
optical elements, systems, or apparatus (13) 13
optics (13) 13
optimisation (13) 13
prostatic neoplasms - radiotherapy (13) 13
radiometry - instrumentation (13) 13
radiometry - methods (13) 13
real time information delivery (13) 13
stereotactic radiosurgery (13) 13
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Medical Physics, ISSN 0094-2405, 03/2014, Volume 41, Issue 3, pp. 031713 - n/a
Journal Article
Medical Physics, ISSN 0094-2405, 12/2015, Volume 42, Issue 12, pp. 6895 - 6911
Purpose: The energy spectrum for a cadmium zinc telluride (CZT) detector has a low energy tail due to incomplete charge collection and intercrystal scattering.... 
Using diaphragms, collimators | the detector being a liquid | Measurement of nuclear or x‐radiation | Scintigraphy | the detector being a crystal | radioisotope imaging | phantoms | Digital computing or data processing equipment or methods, specially adapted for specific applications | with semiconductor detectors | Monte Carlo methods | crosstalk correction | solid scintillation detectors | CZT detectors | Single photon emission computed tomography (SPECT) | Image detection systems | medical image processing | pinhole collimators | Reconstruction | expectation‐maximisation algorithm | single photon emission computed tomography | Scintillation detectors | Photons | cadmium compounds | image reconstruction | Biological material, e.g. blood, urine; Haemocytometers | Plates or blocks in which tracks of nuclear particles are made visible by after‐treatment, e.g. using photographic emulsion, using mica | Photon scattering | cardiology | collimators | scatter correction | the detector being made of plastics | Image sensors | Monte Carlo simulations | Image data processing or generation, in general | Tubes for determining the presence, intensity, density or energy of radiation or particles | Medical image reconstruction | Measuring radioactive content of objects, e.g. contamination (whole‐body counters G01T011/63)
Journal Article
Medical Physics, ISSN 0094-2405, 05/2016, Volume 43, Issue 5, pp. 2387 - 2398
Journal Article
Medical Physics, ISSN 0094-2405, 06/2014, Volume 41, Issue 6, pp. 061703 - n/a
Purpose: Intrafraction deformation limits targeting accuracy in radiotherapy. Studies show tumor deformation of over 10 mm for both single tumor deformation... 
Using diaphragms, collimators | image registration | Computer software | adaptation | biomechanics | tumor deformation | phantoms | Digital computing or data processing equipment or methods, specially adapted for specific applications | Computed tomography | Intensity modulated radiation therapy | Registration | deformation | Dosimetry | tumours | Computerised tomographs | medical image processing | Mechanical and electrical properties of tissues and organs | Collimators | Medical imaging | Biological material, e.g. blood, urine; Haemocytometers | Linear accelerators | computerised tomography | Multileaf collimators | Lungs | DMLC tracking | Image data processing or generation, in general | radiation therapy | Therapeutic applications, including brachytherapy | Cancer | MODULATED ARC THERAPY | MLC | RADIATION-THERAPY | DELIVERY | TARGET TRACKING | LUNG-CANCER | MOTION | RADIOTHERAPY | DOSIMETRY | RADIOLOGY, NUCLEAR MEDICINE & MEDICAL IMAGING | IMAGE REGISTRATION | Motion | Humans | Radiotherapy, Intensity-Modulated - methods | Radiation Equipment and Supplies | Radiosurgery - instrumentation | Neoplasms - diagnostic imaging | Radiotherapy, Intensity-Modulated - instrumentation | Feasibility Studies | Magnetic Resonance Imaging | Algorithms | Radiographic Image Interpretation, Computer-Assisted - methods | Models, Biological | Radiotherapy, Image-Guided - methods | Computer Simulation | Female | Lung Neoplasms - diagnostic imaging | Software | Radiotherapy, Image-Guided - instrumentation | Phantoms, Imaging | Radiosurgery - methods | Lymph Nodes - diagnostic imaging | Pattern Recognition, Automated - methods | APERTURES | NEOPLASMS | LYMPH NODES | LUNGS | ALGORITHMS | DEFORMATION | ACCURACY | LINEAR ACCELERATORS | NMR IMAGING | IMAGES | RADIOLOGY AND NUCLEAR MEDICINE | COMPUTER CODES | PHANTOMS | COLLIMATORS | Radiation Therapy Physics
Journal Article
Medical Physics, ISSN 0094-2405, 08/2015, Volume 42, Issue 8, pp. 4796 - 4813
In single photon emission computed tomography, the choice of the collimator has a major impact on the sensitivity and resolution of the system. Traditional... 
Multiplexing | Using diaphragms, collimators | production | Collimation | Scintigraphy | SPECT | Digital computing or data processing equipment or methods, specially adapted for specific applications | image sampling | optimisation | reviews | Numerical optimization | optimization | Tungsten | Single photon emission computed tomography (SPECT) | Image detection systems | image resolution | medical image processing | single photon emission computed tomography | Biological material, e.g. blood, urine; Haemocytometers | collimator | collimators | Image sensors | Image data processing or generation, in general | Medical image reconstruction | Measuring radioactive content of objects, e.g. contamination (whole‐body counters G01T011/63) | Spatial resolution | BRAIN SPECT | HALF-CONE-BEAM | ROTATING SLAT | RECONSTRUCTION ALGORITHM | MULTI-PINHOLE SPECT | MULTIPINHOLE COLLIMATOR | ULTRA-HIGH-RESOLUTION | SLIT-SLAT COLLIMATOR | PARALLEL HOLE COLLIMATION | DETECTOR SPATIAL-RESOLUTION | RADIOLOGY, NUCLEAR MEDICINE & MEDICAL IMAGING | Tomography, Emission-Computed, Single-Photon - methods | Animals | Tomography, Emission-Computed, Single-Photon - instrumentation | Equipment Design | Humans | ANIMALS | REVIEWS | INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY | SAMPLING | SPATIAL RESOLUTION | BIOMEDICAL RADIOGRAPHY | BEAMS | RADIATION PROTECTION AND DOSIMETRY | SENSITIVITY | PHOTON EMISSION | 60 APPLIED LIFE SCIENCES | ADAPTIVE SYSTEMS | OPTIMIZATION | COLLIMATORS | SINGLE PHOTON EMISSION COMPUTED TOMOGRAPHY | Review (Online Only)
Journal Article
Medical Physics, ISSN 0094-2405, 07/2014, Volume 41, Issue 7, p. n/a
Purpose: The aim of the present study is to provide a comprehensive set of detector specific correction factors for beam output measurements for small beams,... 
Using diaphragms, collimators | dosimetry | with scintillation detectors | the detector being a liquid | Measurement of nuclear or x‐radiation | Scintigraphy | the detector being a crystal | Measuring radiation intensity | with semiconductor detectors | aluminium compounds | solid scintillation detectors | dose response | carbon | detector corrections for small fields | small fields | Particle beam detectors | Gas‐filled counters: ionization chambers, proportional, and avalanche counters | liquid ionisation chambers | volume effects | Ionisation chambers | Scintillation detectors | Ozone | Diamond | Photons | Plates or blocks in which tracks of nuclear particles are made visible by after‐treatment, e.g. using photographic emulsion, using mica | Ionization chambers | collimators | the detector being made of plastics | thermoluminescent dosimeters | small field dosimetry | Electromagnetic radiation detectors | Tubes for determining the presence, intensity, density or energy of radiation or particles | radiation therapy | Field size | Dosimetry/exposure assessment | FIBER DOSIMETER | SMALL-FIELD | ELECTRON | DIAMOND DETECTOR | EPR DOSIMETRY | HIGH-ENERGY PHOTON | RADIATION-THERAPY | POSTAL DOSIMETRY AUDIT | SILICON DIODE | ION-CHAMBER | RADIOLOGY, NUCLEAR MEDICINE & MEDICAL IMAGING | COMMISSIONING | CORRECTIONS | PLASTIC SCINTILLATORS | PHOTON BEAMS | 07 ISOTOPES AND RADIATION SOURCES | COLLIMATORS | COMPARATIVE EVALUATIONS | DOSIMETRY | THERMOLUMINESCENT DOSEMETERS | IONIZATION CHAMBERS
Journal Article
Journal Article
Medical Physics, ISSN 0094-2405, 09/2016, Volume 43, Issue 9, pp. 5188 - 5194
Journal Article
Journal Article