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... switching from CT to CBCT could be considerable due to the potentially lower radiation dose particularly in children and young adults. 15. Summary of consideration and rationale for MSAC’s advice MSAC noted that this application for MBS listing of CBCT for imaging of sinuses and bone pathology is to ...
... switching from CT to CBCT could be considerable due to the potentially lower radiation dose particularly in children and young adults. 15. Summary of consideration and rationale for MSAC’s advice MSAC noted that this application for MBS listing of CBCT for imaging of sinuses and bone pathology is to ...
A Study on Evaluation of kV-CBCT-image-based Treatment
... patient on the treatment table can be acquired in about 60 seconds, just before delivery of each treatment. These pretreatment volumetric images may be used to verify or correct the patient setup and recalculate the treatment plan based on patient anatomy on treatment day. However, this application ...
... patient on the treatment table can be acquired in about 60 seconds, just before delivery of each treatment. These pretreatment volumetric images may be used to verify or correct the patient setup and recalculate the treatment plan based on patient anatomy on treatment day. However, this application ...
W(h)ither human cardiac and body magnetic resonance at ultrahigh
... even signal void, and hence bear the potential to offset the benefits of UHF-BMR/CMR due to non-diagnostic image quality. To address this obstruction for broader clinical studies, a plethora of reports eloquently refers to the development of enabling RF technology tailored for BMR and CMR at 7.0 T. I ...
... even signal void, and hence bear the potential to offset the benefits of UHF-BMR/CMR due to non-diagnostic image quality. To address this obstruction for broader clinical studies, a plethora of reports eloquently refers to the development of enabling RF technology tailored for BMR and CMR at 7.0 T. I ...
Geometric Accuracy of 3-D X-Ray Image
... Abstract. Image guided interventions often involve C-arm X-ray imaging systems. State-of-the art fluoroscopy systems not only offer 2-D Xray imaging, but they can also be used to obtain 3-D cone-beam tomographic data sets. These 3-D volumetric images can be used for image guidance and device navigatio ...
... Abstract. Image guided interventions often involve C-arm X-ray imaging systems. State-of-the art fluoroscopy systems not only offer 2-D Xray imaging, but they can also be used to obtain 3-D cone-beam tomographic data sets. These 3-D volumetric images can be used for image guidance and device navigatio ...
Cone-beam computed tomography with a flat
... The development and performance of a system for x-ray cone-beam computed tomography 共CBCT兲 using an indirect-detection flat-panel imager 共FPI兲 is presented. Developed as a bench-top prototype for initial investigation of FPI-based CBCT for bone and soft-tissue localization in radiotherapy, the syste ...
... The development and performance of a system for x-ray cone-beam computed tomography 共CBCT兲 using an indirect-detection flat-panel imager 共FPI兲 is presented. Developed as a bench-top prototype for initial investigation of FPI-based CBCT for bone and soft-tissue localization in radiotherapy, the syste ...
The Modern Technology of Radiation Oncology, Vol. 1
... is required to localize the tumor, to generate ionizing radiation, and to deliver a high radiation dose to a three-dimensional target volume while sparing normal tissues. A number of books have been written about the medical physics and clinical aspects of radiation oncology and treatment planning. ...
... is required to localize the tumor, to generate ionizing radiation, and to deliver a high radiation dose to a three-dimensional target volume while sparing normal tissues. A number of books have been written about the medical physics and clinical aspects of radiation oncology and treatment planning. ...
Cyclotron Production of 68Ga using a 68Zn-based
... Abstract Recent research developments have demonstrated significant advantages of Gallium-68 labeled radiopharmaceuticals in PET cancer imaging, namely on neuroendocrine tumours. The suitable half-life (68 minutes), high positron emission yield and low radiation exposure for the patient are some of ...
... Abstract Recent research developments have demonstrated significant advantages of Gallium-68 labeled radiopharmaceuticals in PET cancer imaging, namely on neuroendocrine tumours. The suitable half-life (68 minutes), high positron emission yield and low radiation exposure for the patient are some of ...
MAGNETIC RESONANCE IMAGING OF LIVER LESIONS
... resection of the secondary deposits have improved longterm survival rates compared to similar patients who do not undergo resection45-47. Preoperative diagnostic imaging evaluation of metastases should be performed to detect the number, size, segmental location and relationship to hepatic vasculatur ...
... resection of the secondary deposits have improved longterm survival rates compared to similar patients who do not undergo resection45-47. Preoperative diagnostic imaging evaluation of metastases should be performed to detect the number, size, segmental location and relationship to hepatic vasculatur ...
MR Imaging of the Spleen - Geisel School of Medicine
... Arteriovenous malformations can occur anywhere in the human body but rarely occur in the spleen. A machinery-type bruit in the upper left abdominal quadrant represents an important and simple diagnostic symptom found at clinical examination during auscultation (23–25). MR imaging can demonstrate art ...
... Arteriovenous malformations can occur anywhere in the human body but rarely occur in the spleen. A machinery-type bruit in the upper left abdominal quadrant represents an important and simple diagnostic symptom found at clinical examination during auscultation (23–25). MR imaging can demonstrate art ...
Essentials of Bone Densitometry for the Medical Physicist
... energy beams through the body. Dual (energy) photon absorptiometry, DPA was developed in the early 1970's with again much of the pioneering work done at the University of Wisconsin. Early DPA units used a radioactive material, gadolinium-153, as the source of two distinct energy photon beams at abou ...
... energy beams through the body. Dual (energy) photon absorptiometry, DPA was developed in the early 1970's with again much of the pioneering work done at the University of Wisconsin. Early DPA units used a radioactive material, gadolinium-153, as the source of two distinct energy photon beams at abou ...
Quantitative Methods for Tumor Imaging with Dynamic PET
... There is always a need and drive to improve modern cancer care. Dynamic positron emission tomography (PET) offers the advantage of in vivo functional imaging, combined with the ability to follow the physiological processes over time. In addition, by applying tracer kinetic modeling to the dynamic PE ...
... There is always a need and drive to improve modern cancer care. Dynamic positron emission tomography (PET) offers the advantage of in vivo functional imaging, combined with the ability to follow the physiological processes over time. In addition, by applying tracer kinetic modeling to the dynamic PE ...
Best Practices in Digital Radiography
... quality image. Because image receptor exposure information is not apparent from the examination or recorded for each digital examination, there is a further disconnect between image capture and the resulting patient exposure. A best practice in digital radiography is the consistent inclusion of info ...
... quality image. Because image receptor exposure information is not apparent from the examination or recorded for each digital examination, there is a further disconnect between image capture and the resulting patient exposure. A best practice in digital radiography is the consistent inclusion of info ...
Abdominal Imaging: Use of High- Concentration Contrast Media
... 2003 annual meeting of the Radiological Society of North America, we reported our experience [32] from an abdominal study using a non-ionic contrast medium (Iomeprol) with an iodine concentration of 400 mg/ml compared to 300 and 350 mg/ml. In this double-blind, randomized, parallel-group comparison ...
... 2003 annual meeting of the Radiological Society of North America, we reported our experience [32] from an abdominal study using a non-ionic contrast medium (Iomeprol) with an iodine concentration of 400 mg/ml compared to 300 and 350 mg/ml. In this double-blind, randomized, parallel-group comparison ...
Image reconstruction for PET/CT scanners: past achievements and
... PET is a medical imaging modality with proven clinical value for the detection, staging and monitoring of a wide variety of diseases. This technique requires the injection of a radiotracer, which is then monitored externally to generate PET data [1,2] . Through different algorithms, PET data can be ...
... PET is a medical imaging modality with proven clinical value for the detection, staging and monitoring of a wide variety of diseases. This technique requires the injection of a radiotracer, which is then monitored externally to generate PET data [1,2] . Through different algorithms, PET data can be ...
Dental CBCT performance testing for physicists and technologists
... between the critical examination, initial performance assessment / acceptance testing and ongoing QA. This contrasts sharply with medical CT units, where machine-specific QA test objects have been provided with the set on purchase for many years, facilitating the local QA process; - differences in t ...
... between the critical examination, initial performance assessment / acceptance testing and ongoing QA. This contrasts sharply with medical CT units, where machine-specific QA test objects have been provided with the set on purchase for many years, facilitating the local QA process; - differences in t ...
Professional Supervision
... support quality improvement in the use of diagnostic imaging services. One of the program’s priority areas is the examination of the role of the current professional supervision requirements for radiologists. The range of imaging services that the standards cover was set to those that fall within th ...
... support quality improvement in the use of diagnostic imaging services. One of the program’s priority areas is the examination of the role of the current professional supervision requirements for radiologists. The range of imaging services that the standards cover was set to those that fall within th ...
Non-Invasive Microstructure and Morphology
... Methods: In this study, a recently emerged imaging technique, in-line X-ray phase contrast imaging (IL-XPCI) was used. This powerful technique enabled high-resolution investigations of soft tissues without contrast agents. We applied IL-XPCI to observe the lungs in an intact mouse for the purpose of ...
... Methods: In this study, a recently emerged imaging technique, in-line X-ray phase contrast imaging (IL-XPCI) was used. This powerful technique enabled high-resolution investigations of soft tissues without contrast agents. We applied IL-XPCI to observe the lungs in an intact mouse for the purpose of ...
Estimativa de dose nos pulmões para procedimentos
... Figure 5 – Detector arrays in modern computed tomography, in a perspective and side view. The side view shows individual detector elements coupled to photodiodes that are layered on substrate electronics, which provide power to the detector system and receive the electronic signal from the photodete ...
... Figure 5 – Detector arrays in modern computed tomography, in a perspective and side view. The side view shows individual detector elements coupled to photodiodes that are layered on substrate electronics, which provide power to the detector system and receive the electronic signal from the photodete ...
Cone-beam computed tomography with a flat
... reconstruction techniques. FPIs provide efficient, distortionless, real-time detectors that are experiencing widespread proliferation in x-ray projection imaging, and cone-beam reconstruction9–12 techniques have been accelerated from hours to seconds through the development of dedicated hardware. Ca ...
... reconstruction techniques. FPIs provide efficient, distortionless, real-time detectors that are experiencing widespread proliferation in x-ray projection imaging, and cone-beam reconstruction9–12 techniques have been accelerated from hours to seconds through the development of dedicated hardware. Ca ...
Diffusion-weighted imaging (DWI) in musculoskeletal MRI: a critical
... at high b-values of 500–1,000 s/mm2. For the same reasons, several normal but highly cellular tissues also appear bright on high b-value images, including the brain, spinal cord, spleen (variable) and normal lymphatic tissues (tonsils, adenoids, lymph nodes). Thus, it can be seen that the signal int ...
... at high b-values of 500–1,000 s/mm2. For the same reasons, several normal but highly cellular tissues also appear bright on high b-value images, including the brain, spinal cord, spleen (variable) and normal lymphatic tissues (tonsils, adenoids, lymph nodes). Thus, it can be seen that the signal int ...
ORGAN MOTION AND IMAGE GUIDANCE IN RADIATION THERAPY
... outcome. With the aid of image guidance, it is possible to allow for a more accurate organ motion and motion control study, which could lead to the reduction of irradiated healthy tissues and possible dose escalation to the target volume to achieve better treatment results. The studies on the organ ...
... outcome. With the aid of image guidance, it is possible to allow for a more accurate organ motion and motion control study, which could lead to the reduction of irradiated healthy tissues and possible dose escalation to the target volume to achieve better treatment results. The studies on the organ ...
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.