SPECT and PET Serve as Molecular Imaging Techniques
... small-cell-lung cancer (SCLC) subjects (80% and 26.7% respectively, p < 0.01). In an interesting study Krüger et al. [8] prospectively recruited 104 neurological asymptomatic patients with primary diagnosis of lung cancer undergoing 18FDG cerebral PET/CT and brain MRI. MRI was able to detect overall ...
... small-cell-lung cancer (SCLC) subjects (80% and 26.7% respectively, p < 0.01). In an interesting study Krüger et al. [8] prospectively recruited 104 neurological asymptomatic patients with primary diagnosis of lung cancer undergoing 18FDG cerebral PET/CT and brain MRI. MRI was able to detect overall ...
Radiation - inayacollegedrmohammedemam
... • Uranium have 92P and 146N. Why is that??? Nucleus is held together by a strong nuclear force; All these nucleons are held together by this force (came from neutrons) which hold the nucleus together. ...
... • Uranium have 92P and 146N. Why is that??? Nucleus is held together by a strong nuclear force; All these nucleons are held together by this force (came from neutrons) which hold the nucleus together. ...
Evaluation of Suspected Pulmonary Embolism in Pregnancy
... subjective nature of these values and expect that individuals with a different set of values may reach different conclusions. ...
... subjective nature of these values and expect that individuals with a different set of values may reach different conclusions. ...
Adult patient doses in interventional neuroradiology
... Interventional neuroradiology studies the vasculature and potential pathologies of the brain by means of catherization performed with the transfemoral artery technique.1,2 Most interventional neuroradiologic procedures are considered to be of a diagnostic nature where the objective is to identify a ...
... Interventional neuroradiology studies the vasculature and potential pathologies of the brain by means of catherization performed with the transfemoral artery technique.1,2 Most interventional neuroradiologic procedures are considered to be of a diagnostic nature where the objective is to identify a ...
Cancer Imaging With Fluorine-18–Labeled Choline Derivatives
... yields.17–20 At the present time, it is not known which choline derivative is most advantageous for clinical use. There have been no direct in vivo comparisons between individual compounds, and previous in vitro comparisons have not controlled for potentially confounding factors, including the prese ...
... yields.17–20 At the present time, it is not known which choline derivative is most advantageous for clinical use. There have been no direct in vivo comparisons between individual compounds, and previous in vitro comparisons have not controlled for potentially confounding factors, including the prese ...
Tumor Assessment using RECIST: Behind the Scenes
... Target lesions should be selected on the basis of their size (lesions with the longest diameter) and their suitability for accurate repeated measurements (either by imaging techniques or clinically). A sum of the longest diameter (LD) for all target lesions will be calculated and reported as the bas ...
... Target lesions should be selected on the basis of their size (lesions with the longest diameter) and their suitability for accurate repeated measurements (either by imaging techniques or clinically). A sum of the longest diameter (LD) for all target lesions will be calculated and reported as the bas ...
Quantitative studies using positron emission tomography for the
... the impact of dynamic PET studies in malignant diseases with respect to tumor diagnosis and therapy management. Dynamic data acquisition is superior to static images because it provides information about the tracer distribution with respect to time and space, in a region of interest. The impact of d ...
... the impact of dynamic PET studies in malignant diseases with respect to tumor diagnosis and therapy management. Dynamic data acquisition is superior to static images because it provides information about the tracer distribution with respect to time and space, in a region of interest. The impact of d ...
Part 1 - Canadian Association of Nuclear Medicine
... So while [18F]FDG is widely available as a commercial product, other molecular imaging agents are available only at PET centres and under restricted protocols matching the CTA guidelines. ...
... So while [18F]FDG is widely available as a commercial product, other molecular imaging agents are available only at PET centres and under restricted protocols matching the CTA guidelines. ...
Rapid MRI Detection of Vertebral Numeric Variation
... Results In all cases, there was concordant numbering between the two reviewers. In our series of 207 patients, we found a total of 16 patients with a variant number of vertebrae. Seven patients were found to have 23 mobile presacral vertebrae (Fig. 1B), seven patients had 25 mobile presacral vertebr ...
... Results In all cases, there was concordant numbering between the two reviewers. In our series of 207 patients, we found a total of 16 patients with a variant number of vertebrae. Seven patients were found to have 23 mobile presacral vertebrae (Fig. 1B), seven patients had 25 mobile presacral vertebr ...
EANM procedure guideline for brain perfusion SPECT using 99mTc
... “challenge first” approach may be favoured since, if it is normal, the baseline study can be omitted. On the other hand, performing the baseline study prior to the challenge study can be advantageous if large perfusion defects are present, suggesting caution during the challenge procedure. One-day p ...
... “challenge first” approach may be favoured since, if it is normal, the baseline study can be omitted. On the other hand, performing the baseline study prior to the challenge study can be advantageous if large perfusion defects are present, suggesting caution during the challenge procedure. One-day p ...
Low Contrast Volume Abdominal CTA
... • A 64-detector CTA protocols using low volumes of CM provides uniform attenuation and excellent visual depiction of the anatomical details in aortoiliac imaging. • A reduction in CM may offer improved imaging options in AAA patients with borderline renal function and renal insufficiency. • Further ...
... • A 64-detector CTA protocols using low volumes of CM provides uniform attenuation and excellent visual depiction of the anatomical details in aortoiliac imaging. • A reduction in CM may offer improved imaging options in AAA patients with borderline renal function and renal insufficiency. • Further ...
Document
... patients undergoing radiation dose during CT examination is the Computed Tomography Dose Index and Dose Length Product. These two quantities are explain as: C. CT Dose Index CTDI is an acceptable radiation dose descriptor at a point in the tissues and estimate as weighted-CTDI (CTDIW) or in the enti ...
... patients undergoing radiation dose during CT examination is the Computed Tomography Dose Index and Dose Length Product. These two quantities are explain as: C. CT Dose Index CTDI is an acceptable radiation dose descriptor at a point in the tissues and estimate as weighted-CTDI (CTDIW) or in the enti ...
CT: ICRP P87
... CT continues to evolve rapidly despite many advances in other imaging modalities It is one of the most important radiological examinations worldwide The frequency of CT examinations is increasing rapidly from 2% of all radiological examinations in some countries a decade ago to 10-15 % now Patient d ...
... CT continues to evolve rapidly despite many advances in other imaging modalities It is one of the most important radiological examinations worldwide The frequency of CT examinations is increasing rapidly from 2% of all radiological examinations in some countries a decade ago to 10-15 % now Patient d ...
CT: ICRP P87
... CT continues to evolve rapidly despite many advances in other imaging modalities It is one of the most important radiological examinations worldwide The frequency of CT examinations is increasing rapidly from 2% of all radiological examinations in some countries a decade ago to 10-15 % now Patient d ...
... CT continues to evolve rapidly despite many advances in other imaging modalities It is one of the most important radiological examinations worldwide The frequency of CT examinations is increasing rapidly from 2% of all radiological examinations in some countries a decade ago to 10-15 % now Patient d ...
Managing Patient Dose in Computed Tomography (CT)
... CT continues to evolve rapidly despite many advances in other imaging modalities It is one of the most important radiological examinations worldwide The frequency of CT examinations is increasing rapidly from 2% of all radiological examinations in some countries a decade ago to 10-15 % now Patient d ...
... CT continues to evolve rapidly despite many advances in other imaging modalities It is one of the most important radiological examinations worldwide The frequency of CT examinations is increasing rapidly from 2% of all radiological examinations in some countries a decade ago to 10-15 % now Patient d ...
Integrated FDG-PET and PET/CT: Clinical Applications
... < 1 minute from base of the skull to mid-thigh with multidetector CT. Also provide anatomical maps for lesion localization Current of ~80 mA is a compromise for limited radiation dose ...
... < 1 minute from base of the skull to mid-thigh with multidetector CT. Also provide anatomical maps for lesion localization Current of ~80 mA is a compromise for limited radiation dose ...
MR Contrast Media in Neuroimaging: A Critical Review of the
... sensitivity and specificity estimates for their application. On the basis of this review, we herein describe basic methods to document improvements in technology. Such studies are essential to devise measures of diagnostic accuracy, which can form the basis for further studies that will assess diagn ...
... sensitivity and specificity estimates for their application. On the basis of this review, we herein describe basic methods to document improvements in technology. Such studies are essential to devise measures of diagnostic accuracy, which can form the basis for further studies that will assess diagn ...
Evaluation of genial tubercle anatomy using cone beam computed
... tissue window (muscles etc.), it is still difficult to analyze complex anatomy on the basis of CT imaging alone (28,29). CT has been of great value for evaluation of anatomical structures, but despite the fact it can yield very thin adjacent slices, it is not yet a perfect technique. As our present ...
... tissue window (muscles etc.), it is still difficult to analyze complex anatomy on the basis of CT imaging alone (28,29). CT has been of great value for evaluation of anatomical structures, but despite the fact it can yield very thin adjacent slices, it is not yet a perfect technique. As our present ...
... process using morphological imaging, bronchoscopy and biopsy. Despite this initial evaluation, some patients are found to have unresectable tumour during surgery or die of recurrent disease within 1 yr of the surgery that was intended to cure it [1, 2]. Indeed the current noninvasive methods have si ...
Document
... • “The Society of Radiology Physician Extenders (SRPE) is a non-profit organization for the RPA and RRA sharing a common bond within the global mid-level radiology profession and medical community in general. The society holds an annual conference conducting seminars and presentations. The SRPE is a ...
... • “The Society of Radiology Physician Extenders (SRPE) is a non-profit organization for the RPA and RRA sharing a common bond within the global mid-level radiology profession and medical community in general. The society holds an annual conference conducting seminars and presentations. The SRPE is a ...
Rectangular Collimation Reduces Radiation Dose
... The latest dental radiography guidelines from the American Dental Association and the U.S. Food and Drug Administration have been updated in an effort to more closely align these recommendations with those of the National Council on Radiation Protection and Measurements (NCRP). The recommendations s ...
... The latest dental radiography guidelines from the American Dental Association and the U.S. Food and Drug Administration have been updated in an effort to more closely align these recommendations with those of the National Council on Radiation Protection and Measurements (NCRP). The recommendations s ...
14 Contrast Media
... received substantial attention in regard to their application as MRI contrast agents. These agents function as negative contrast agents, because the large positive magnetic moment induces spin dephasing in tissue, with resulting signal loss. The final two parameters that provide image contrast in MRI ...
... received substantial attention in regard to their application as MRI contrast agents. These agents function as negative contrast agents, because the large positive magnetic moment induces spin dephasing in tissue, with resulting signal loss. The final two parameters that provide image contrast in MRI ...
Radiation Safety in the Cath Lab
... exposure justification, one of the basic principles of radiation protection. ...
... exposure justification, one of the basic principles of radiation protection. ...
Neutron capture therapy of cancer
Neutron capture therapy (NCT) is a noninvasive therapeutic modality for treating locally invasive malignant tumors such as primary brain tumors and recurrent head and neck cancer. It is a two step procedure: first, the patient is injected with a tumor localizing drug containing a non-radioactive isotope that has a high propensity or cross section (σ) to capture slow neutrons. The cross section of the capture agent is many times greater than that of the other elements present in tissues such as hydrogen, oxygen, and nitrogen. In the second step, the patient is radiated with epithermal neutrons, which after losing energy as they penetrate tissue, are absorbed by the capture agent which subsequently emits high-energy charged particles, thereby resulting in a biologically destructive nuclear reaction (Fig.1).All of the clinical experience to date with NCT is with the non-radioactive isotope boron-10, and this is known as boron neutron capture therapy (BNCT). At this time, the use of other non-radioactive isotopes, such as gadolinium, has been limited, and to date, it has not been used clinically. BNCT has been evaluated clinically as an alternative to conventional radiation therapy for the treatment of malignant brain tumors (gliomas), and more recently, recurrent, locally advanced head and neck cancer.