Tomotherapy vs IMRT (952kB PPT)
... - There is also the considerable potential for radiobiological gain. In Tomotherapy every cell receives its full complement of dose in less than 2 minutes. In conventional accelerators the time from first to last photon may be 20 min or more allowing significant tumour cell recovery. ...
... - There is also the considerable potential for radiobiological gain. In Tomotherapy every cell receives its full complement of dose in less than 2 minutes. In conventional accelerators the time from first to last photon may be 20 min or more allowing significant tumour cell recovery. ...
Positron Emission Tomography in the Routine Management of
... with microvascular dysfunction, and CAD or its risk factors16 may be familial as an independent risk factor17 and predicts future coronary events18–21 or clinically manifest disease up to 10 years later.21 The three principle methods for assessing coronary endothelial function reflect different aspe ...
... with microvascular dysfunction, and CAD or its risk factors16 may be familial as an independent risk factor17 and predicts future coronary events18–21 or clinically manifest disease up to 10 years later.21 The three principle methods for assessing coronary endothelial function reflect different aspe ...
Non-invasive imaging techniques in assessing
... technique initially produced an unacceptable amount of artefacts because of the limited MRI technology at that time [53]. Today, this method has been greatly improved and is based on chemical shift, having as a main purpose the uniform fat suppression. Some of the advantages of using this method are ...
... technique initially produced an unacceptable amount of artefacts because of the limited MRI technology at that time [53]. Today, this method has been greatly improved and is based on chemical shift, having as a main purpose the uniform fat suppression. Some of the advantages of using this method are ...
Respiratory Motion Correction in Positron Emission Tomography
... treatment planning in radiation therapy [54, 116]. PET involves intravenous injection of a radioactive tracer into the human body. The radioactive tracer is essentially a compound of interest that is labelled with a positron emitting isotope, such as ...
... treatment planning in radiation therapy [54, 116]. PET involves intravenous injection of a radioactive tracer into the human body. The radioactive tracer is essentially a compound of interest that is labelled with a positron emitting isotope, such as ...
Left ventricular ejection fraction measurements: accuracy and
... Int J Cardiovasc Imaging Table 3 Prediction of allcause mortality: ...
... Int J Cardiovasc Imaging Table 3 Prediction of allcause mortality: ...
Nuclear medicine in the diagnosis of benign thyroid diseases
... is to show whether a nodule, that is manifested in ultrasound, is a focus of excessive hormonal activity (hot nodule) or accumulates the radiotracer at a level similar to or lower than the rest of the gland (warm or cold nodule). Because the hot nodules are rarely malignant, according to ATA guideli ...
... is to show whether a nodule, that is manifested in ultrasound, is a focus of excessive hormonal activity (hot nodule) or accumulates the radiotracer at a level similar to or lower than the rest of the gland (warm or cold nodule). Because the hot nodules are rarely malignant, according to ATA guideli ...
Comparing the performance of visual estimation and standard
... due to the increased inflammation in the patients with chronic pancreatitis. It has been reported that inflammation can give rise to focal FDG uptake in the same intensity range as pancreatic neoplasm, even when clinical, laboratory, and CT findings suggestive of an inflammatory etiology are equivoc ...
... due to the increased inflammation in the patients with chronic pancreatitis. It has been reported that inflammation can give rise to focal FDG uptake in the same intensity range as pancreatic neoplasm, even when clinical, laboratory, and CT findings suggestive of an inflammatory etiology are equivoc ...
Table 1
... Risk stratification of patients with suspected or documented coronary artery disease (CAD) identifies patients at risk for future cardiac events. Myocardial perfusion imaging (MPI) using single-photon emission tomography (SPECT) has shown good prognostic value (1– 4), and patients with a normal SPEC ...
... Risk stratification of patients with suspected or documented coronary artery disease (CAD) identifies patients at risk for future cardiac events. Myocardial perfusion imaging (MPI) using single-photon emission tomography (SPECT) has shown good prognostic value (1– 4), and patients with a normal SPEC ...
10. Organization of a Paediatric Radiology Department - RPOP
... 2. False - Parents and family members should comfort the child and they should be given clear instructions and personal protective devices. 3. False - There are different types of shielding devices for males and females gonads and they should be available in various sizes. 4. False - They should be ...
... 2. False - Parents and family members should comfort the child and they should be given clear instructions and personal protective devices. 3. False - There are different types of shielding devices for males and females gonads and they should be available in various sizes. 4. False - They should be ...
5 post op spine
... of a disk, these spacers are inserted into the intervertebral space with or without additional screw and plate/rod fixation.9 Cages are usually made of titanium, carbon fiber, polyetheretherketone (PEEK), or cortical or corticocancellous bone graft. Interbody cages are filled with bone graft materia ...
... of a disk, these spacers are inserted into the intervertebral space with or without additional screw and plate/rod fixation.9 Cages are usually made of titanium, carbon fiber, polyetheretherketone (PEEK), or cortical or corticocancellous bone graft. Interbody cages are filled with bone graft materia ...
Full Text - Journal of The Royal Society Interface
... an ideal sample for this technology, consisting of small air-filled sacs surrounded by soft tissue. This structure provides many air–tissue interfaces, which exhibit sharp refractive index gradients, on which the edge enhancement of phase-contrast imaging is most effective. We have developed and impl ...
... an ideal sample for this technology, consisting of small air-filled sacs surrounded by soft tissue. This structure provides many air–tissue interfaces, which exhibit sharp refractive index gradients, on which the edge enhancement of phase-contrast imaging is most effective. We have developed and impl ...
Generalized DQE analysis of radiographic and dual‐energy imaging
... acquired at lower energy 共e.g., 60 kVp兲 will have higher bone contrast than an image acquired at a higher energy 共e.g., 120 kVp兲 due to calcium in the bone. A common algorithm for DE image reconstruction, derived from the straightforward manipulation of Beer’s law, is weighted log subtraction. While ...
... acquired at lower energy 共e.g., 60 kVp兲 will have higher bone contrast than an image acquired at a higher energy 共e.g., 120 kVp兲 due to calcium in the bone. A common algorithm for DE image reconstruction, derived from the straightforward manipulation of Beer’s law, is weighted log subtraction. While ...
Nuclear medicine
Nuclear medicine is a medical specialty involving the application of radioactive substances in the diagnosis and treatment of disease. Nuclear medicine scans are usually conducted by radiographers. Nuclear medicine, in a sense, is ""radiology done inside out"" or ""endoradiology"" because it records radiation emitting from within the body rather than radiation that is generated by external sources like X-rays.