X-ray-based attenuation correction for positron emission
... effects are photon attenuation, scattered and random coincidences, detector efficiency variations, and scanner deadtime. Of these, by far the most important is photon attenuation, which can affect both the visual quality and the quantitative accuracy of PET data. Figure 1 is an example of an [18F]-f ...
... effects are photon attenuation, scattered and random coincidences, detector efficiency variations, and scanner deadtime. Of these, by far the most important is photon attenuation, which can affect both the visual quality and the quantitative accuracy of PET data. Figure 1 is an example of an [18F]-f ...
14 Contrast Media
... sensitivity to contrast media greater than that of xray computed tomography (CT). First-pass brain studies now also make possible the assessment of regional cerebral blood volume. New hardware developments, together with advances in contrast media design, continue to drive the expansion of contrast ...
... sensitivity to contrast media greater than that of xray computed tomography (CT). First-pass brain studies now also make possible the assessment of regional cerebral blood volume. New hardware developments, together with advances in contrast media design, continue to drive the expansion of contrast ...
Ten years have passed since the first commercial equipment for
... masses, fibrosis associated with liver cirrhosis, and atheroma and calcification associated with arteriosclerosis. While a variety of techniques such as CT, MRI, and PET are being put to practical use for diagnostic imaging of morphology and function, it can be said that a technique for objectively ...
... masses, fibrosis associated with liver cirrhosis, and atheroma and calcification associated with arteriosclerosis. While a variety of techniques such as CT, MRI, and PET are being put to practical use for diagnostic imaging of morphology and function, it can be said that a technique for objectively ...
thyroid scintigraphy new 2011
... Iodine-123 (123I or I-123) is a radioactive isotope of iodine used in nuclear medicine imaging (Best for imaging) Iodine-123 is produced in a cyclotron by proton irradiation of enriched xenon. (Very expensive), (Only Wednesdays available) Its half-life is 13.22 hours; the decay emits gamma radiation ...
... Iodine-123 (123I or I-123) is a radioactive isotope of iodine used in nuclear medicine imaging (Best for imaging) Iodine-123 is produced in a cyclotron by proton irradiation of enriched xenon. (Very expensive), (Only Wednesdays available) Its half-life is 13.22 hours; the decay emits gamma radiation ...
Chapter 4732 X-ray Definitions: Proposed Revisions to 4732.0110
... x-ray tube installed in an enclosure independent of existing architectural structure except the floor on which it may be placed. The cabinet x-ray system is intended to: ...
... x-ray tube installed in an enclosure independent of existing architectural structure except the floor on which it may be placed. The cabinet x-ray system is intended to: ...
image guided radiation therapy applications for
... neck region are circumvented with ultrasound imaging, and after dosimetric verification it is argued that adaptive replanning may be more beneficial than patient realignment when intensity modulated radiation therapy techniques are used. Some of the largest dose delivery errors were found in externa ...
... neck region are circumvented with ultrasound imaging, and after dosimetric verification it is argued that adaptive replanning may be more beneficial than patient realignment when intensity modulated radiation therapy techniques are used. Some of the largest dose delivery errors were found in externa ...
Vessel Imaging by Interferometric Phase-Contrast X
... observed between the measured values of d␦ and theoretical values. Liquid samples, except for FC-43, had lower d␦ values compared with the d␦ of liver tissue (3.5⫻10⫺8). The measured d␦ of FC-43 was lower than the theoretical value. We speculate that the density of FC-43 decreased during stabilizati ...
... observed between the measured values of d␦ and theoretical values. Liquid samples, except for FC-43, had lower d␦ values compared with the d␦ of liver tissue (3.5⫻10⫺8). The measured d␦ of FC-43 was lower than the theoretical value. We speculate that the density of FC-43 decreased during stabilizati ...
Thoracic Spine radiography - Saint Francis Veterinary Center
... Each radiographic projection is a separate study and should be radiographed as such. High quality, correctly positioned and collimated radiographs are required in order to provide an accurate assessment of the area of interest, especially for surgical planning. ...
... Each radiographic projection is a separate study and should be radiographed as such. High quality, correctly positioned and collimated radiographs are required in order to provide an accurate assessment of the area of interest, especially for surgical planning. ...
Hepatocellular Carcinoma and Diffusion
... There are several confounders making the quantification of lesions through DWI and ADC difficult. Average ADC values do not capture the known heterogeneity in tumors. Signal intensity is both scanner dependent, including technique and field strength, as well as patient dependent, including the infla ...
... There are several confounders making the quantification of lesions through DWI and ADC difficult. Average ADC values do not capture the known heterogeneity in tumors. Signal intensity is both scanner dependent, including technique and field strength, as well as patient dependent, including the infla ...
Hospital Outpatient Prospective Payment System and CY 2009
... The ACR believes important issues need to be addressed before implementing the five composites for CT, MR, and US. However, if CMS chooses to move forward there are a few changes that ACR believes must take place in order for hospitals to avoid creating incentives for hospitals to provide these ser ...
... The ACR believes important issues need to be addressed before implementing the five composites for CT, MR, and US. However, if CMS chooses to move forward there are a few changes that ACR believes must take place in order for hospitals to avoid creating incentives for hospitals to provide these ser ...
MRI Accreditation Program Requirements
... The MRI Accreditation Program evaluates the qualifications of personnel, the quality control program, MR Safety Policies and image quality specific to MRI. It involves the acquisition of clinical and phantom images and corresponding data for each unit. The acquisition of the phantom images involves ...
... The MRI Accreditation Program evaluates the qualifications of personnel, the quality control program, MR Safety Policies and image quality specific to MRI. It involves the acquisition of clinical and phantom images and corresponding data for each unit. The acquisition of the phantom images involves ...
Breast MRI Accreditation Program Requirements
... that never submit a unit for accreditation testing are subject to revocation of their accreditation. Such revocation could adversely affect reimbursement. Although facilities applying for accreditation are not required to submit phantom images for accreditation review at this time, the ACR may requi ...
... that never submit a unit for accreditation testing are subject to revocation of their accreditation. Such revocation could adversely affect reimbursement. Although facilities applying for accreditation are not required to submit phantom images for accreditation review at this time, the ACR may requi ...
Radiology
... All information requested must be included for each participating site with the exception of those sites where only a limited sub-specialty rotation is employed as a part of the educational experience. Example: For a cardiovascular rotation, include only the cardiovascular examination data and equip ...
... All information requested must be included for each participating site with the exception of those sites where only a limited sub-specialty rotation is employed as a part of the educational experience. Example: For a cardiovascular rotation, include only the cardiovascular examination data and equip ...
Evaluation of absorbed dose and image quality in mammography
... Mammography refers to the X-ray examination of the human breast, and is considered the single most important diagnostic tool in the early detection of breast cancer, which is by far the most common cancer among women. There is good evidence from clinical trials, that mammographic screening can reduc ...
... Mammography refers to the X-ray examination of the human breast, and is considered the single most important diagnostic tool in the early detection of breast cancer, which is by far the most common cancer among women. There is good evidence from clinical trials, that mammographic screening can reduc ...
Criteria for Acceptability of Medical Radiological Equipment used in
... This report provides a compendium of criteria which radiological, nuclear medicine and radiotherapy equipment in normal use ought to be able to pass. The most common form of criterion is a “suspension level” for a measurement of a performance or safety parameter. Failure to meet a suspension level w ...
... This report provides a compendium of criteria which radiological, nuclear medicine and radiotherapy equipment in normal use ought to be able to pass. The most common form of criterion is a “suspension level” for a measurement of a performance or safety parameter. Failure to meet a suspension level w ...
3. Profile Details - QIBA Wiki
... the claims of this Profile. Examples include bronchoscopy, thoracic or abdominal surgery, and radiation therapy. To meet Profile claims, scans should be performed prior to or at an appropriate time following such procedures. ...
... the claims of this Profile. Examples include bronchoscopy, thoracic or abdominal surgery, and radiation therapy. To meet Profile claims, scans should be performed prior to or at an appropriate time following such procedures. ...
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.