Contrast-enhanced ultrasound for prostate cancer
... An example of a grayscale image of the prostate is shown in Figure 3a. The location of the probe in the rectum is at the bottom of the image. At the top, the bladder is visible as a “black hole”. In between, there is a high-resolution image of the prostate. A second example is shown in Figure 3b. On ...
... An example of a grayscale image of the prostate is shown in Figure 3a. The location of the probe in the rectum is at the bottom of the image. At the top, the bladder is visible as a “black hole”. In between, there is a high-resolution image of the prostate. A second example is shown in Figure 3b. On ...
Document
... example, made the study inappropriate, while there were still instances when its role is as yet unclear, such as in patients with normal or equivocal ECG or biomarkers but with a high pre-test probability. The future outlook for coronary artery disease lay in CT functional assessment, as well as new ...
... example, made the study inappropriate, while there were still instances when its role is as yet unclear, such as in patients with normal or equivocal ECG or biomarkers but with a high pre-test probability. The future outlook for coronary artery disease lay in CT functional assessment, as well as new ...
The concept and challenges of TomoTherapy accelerators
... The current commercial competitors for the title of the future of IMRT are based on the intensity-modulated arc therapy system (IMAT) first proposed by Yu (1995). The IMAT concept makes use of MLC-shaped fields, which define the intensity distribution at each angle (Yu 1995). In comparison with tomo ...
... The current commercial competitors for the title of the future of IMRT are based on the intensity-modulated arc therapy system (IMAT) first proposed by Yu (1995). The IMAT concept makes use of MLC-shaped fields, which define the intensity distribution at each angle (Yu 1995). In comparison with tomo ...
Getting Started: A Guide to Year One of Radiology Residency
... will still be asked questions for which you do not know the answer. Your best strategy is to prepare methods of accessing the answers to the most common questions quickly by creating cheat sheets, quick links or institutional references for guidance. Below are suggested ways to best prepare for your ...
... will still be asked questions for which you do not know the answer. Your best strategy is to prepare methods of accessing the answers to the most common questions quickly by creating cheat sheets, quick links or institutional references for guidance. Below are suggested ways to best prepare for your ...
Society of Nuclear Medicine Procedure Guideline
... Sincalide pretreatment: Sincalide, a synthetic C-terminal octapeptide of cholecystokinin (CCK) can be used to empty the gallbladder prior to radiopharmaceutical administration. This can facilitate filling of the gallbladder with radioactive bile. This maneuver is particularly helpful in patients who ...
... Sincalide pretreatment: Sincalide, a synthetic C-terminal octapeptide of cholecystokinin (CCK) can be used to empty the gallbladder prior to radiopharmaceutical administration. This can facilitate filling of the gallbladder with radioactive bile. This maneuver is particularly helpful in patients who ...
Comparing the performance of visual estimation and standard
... (12). In their study, they explained that the poor specificity, lower than that of our study, could be 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 neopl ...
... (12). In their study, they explained that the poor specificity, lower than that of our study, could be 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 neopl ...
Right Lower Quadrant Pain: Ruling Out
... such as acquired immunodeficiency syndrome (AIDS), associated with immunosuppressive states. One factor contributing to the overall complexity of acute right lower quadrant pain as a clinical problem is that the differential diagnosis ranges from benign self-limited disorders (e.g., mesenteric adenit ...
... such as acquired immunodeficiency syndrome (AIDS), associated with immunosuppressive states. One factor contributing to the overall complexity of acute right lower quadrant pain as a clinical problem is that the differential diagnosis ranges from benign self-limited disorders (e.g., mesenteric adenit ...
1 Imaging for Clinical Trials at Vanderbilt University Medical Center
... reasonable attempt to remove any identifying information (PHI) from imaging studies up to the limits of the various software programs used in the department, which may vary from modality to modality. If further “scrubbing” of DICOM fields is required, researchers must obtain and use their own third- ...
... reasonable attempt to remove any identifying information (PHI) from imaging studies up to the limits of the various software programs used in the department, which may vary from modality to modality. If further “scrubbing” of DICOM fields is required, researchers must obtain and use their own third- ...
1 - American College of Radiology
... oncologists, and clinical medical physicists in the United States. The College is a nonprofit professional society whose primary purposes are to advance the science of radiology, improve radiologic services to the patient, study the socioeconomic aspects of the practice of radiology, and encourage c ...
... oncologists, and clinical medical physicists in the United States. The College is a nonprofit professional society whose primary purposes are to advance the science of radiology, improve radiologic services to the patient, study the socioeconomic aspects of the practice of radiology, and encourage c ...
Colorectal Cancer Screening - American College of Radiology
... sensitivities of 59%–92% and specificities of 82%–98% for polyps ≥10 mm [44-51]. A meta-analysis of these early trials confirmed reasonably high, pooled sensitivities of 88% and 81% by patient and lesion, respectively, with a pooled specificity of 95% for polyps ≥10 mm [52]. Studies performed with 4 ...
... sensitivities of 59%–92% and specificities of 82%–98% for polyps ≥10 mm [44-51]. A meta-analysis of these early trials confirmed reasonably high, pooled sensitivities of 88% and 81% by patient and lesion, respectively, with a pooled specificity of 95% for polyps ≥10 mm [52]. Studies performed with 4 ...
IMRT verification by three-dimensional dose reconstruction
... A method of reconstructing three-dimensional, in vivo dose distributions delivered by intensitymodulated radiotherapy 共IMRT兲 is presented. A proof-of-principle experiment is described where an inverse-planned IMRT treatment is delivered to an anthropomorphic phantom. The exact position of the phanto ...
... A method of reconstructing three-dimensional, in vivo dose distributions delivered by intensitymodulated radiotherapy 共IMRT兲 is presented. A proof-of-principle experiment is described where an inverse-planned IMRT treatment is delivered to an anthropomorphic phantom. The exact position of the phanto ...
IOSR Journal of Dental and Medical Sciences (IOSR-JDMS)
... endodontics like preoperative intraoperative and postoperative assessment [1]. For years, periapical radiographs have been used as an adjunct to help endodontists diagnose pathology and aid the clinician in developing a treatment strategy. Recently a new imaging modality, cone-beam computed tomograp ...
... endodontics like preoperative intraoperative and postoperative assessment [1]. For years, periapical radiographs have been used as an adjunct to help endodontists diagnose pathology and aid the clinician in developing a treatment strategy. Recently a new imaging modality, cone-beam computed tomograp ...
Radiation Dose and Safety: Informatics Standards and Tools
... never devised with the intention of producing risk estimates for an individual patient, but rather for assessing risks from larger populations of individuals (eg, all patients having a head CT scan, interventional fluoroscopy procedure, or nuclear medicine exam). The tissue-weighting factors for vari ...
... never devised with the intention of producing risk estimates for an individual patient, but rather for assessing risks from larger populations of individuals (eg, all patients having a head CT scan, interventional fluoroscopy procedure, or nuclear medicine exam). The tissue-weighting factors for vari ...
Can Clinically Significant Prostate Cancer Be Detected with
... proportion of men are diagnosed with clinically insignificant disease, which may result in subsequent overtreatment. Owing to its high soft-tissue contrast, high resolution, and ability to simultaneously image functional parameters, magnetic resonance imaging (MRI) provides the best visualisation of ...
... proportion of men are diagnosed with clinically insignificant disease, which may result in subsequent overtreatment. Owing to its high soft-tissue contrast, high resolution, and ability to simultaneously image functional parameters, magnetic resonance imaging (MRI) provides the best visualisation of ...
Radiographic Imaging of Musculoskeletal Neoplasia
... detecting the viability of bone sarcomas or the presence of recurrence.9 In soft-tissue lesions, scintigraphy is relatively nonspecific for diagnostic purposes. Soft-tissue lesions show variable radiopharmaceutical uptake, but in general, most malignant lesions exhibit increased uptake, while benign ...
... detecting the viability of bone sarcomas or the presence of recurrence.9 In soft-tissue lesions, scintigraphy is relatively nonspecific for diagnostic purposes. Soft-tissue lesions show variable radiopharmaceutical uptake, but in general, most malignant lesions exhibit increased uptake, while benign ...
AMERICAN ACADEMY OF NEUROLOGY NEUROIMAGING
... commonly used neuroimaging studies. This knowledge will enhance patient care because neurologists will know which test is most appropriate for a given clinical situation. Defining the scope of the neuroimaging body of knowledge will facilitate the demonstration of competence on the part of neurologi ...
... commonly used neuroimaging studies. This knowledge will enhance patient care because neurologists will know which test is most appropriate for a given clinical situation. Defining the scope of the neuroimaging body of knowledge will facilitate the demonstration of competence on the part of neurologi ...
A GUIDE TO THE TEACHING OF CLINICAL
... vendor representatives for information and services, he or she must be able to ask appropriate questions and discern scientific data from marketing claims. ...
... vendor representatives for information and services, he or she must be able to ask appropriate questions and discern scientific data from marketing claims. ...
TITLE tracheobronchomalacia in pediatric patients P.CIET , P.WIELOPOLSKI
... Our retrospective analysis included 12 pediatric patients (Table I), who all had a cine-MRI made for various clinical diagnostic reasons. Informed consent was obtained from the parents of the patient for anonymous analysis of the data and registered in the electronic patient record. Approval for thi ...
... Our retrospective analysis included 12 pediatric patients (Table I), who all had a cine-MRI made for various clinical diagnostic reasons. Informed consent was obtained from the parents of the patient for anonymous analysis of the data and registered in the electronic patient record. Approval for thi ...
Policy Statement on Thyroid Shielding During Diagnostic Medical
... risk of thyroid cancer resulting from radiation exposure is reduced proportionately with the dose of radiation received, although this relationship may not continue down to the lowest doses. (6). Thyroid cancer incidence is increasing throughout the world. In the U.S. in particular, it is increasing ...
... risk of thyroid cancer resulting from radiation exposure is reduced proportionately with the dose of radiation received, although this relationship may not continue down to the lowest doses. (6). Thyroid cancer incidence is increasing throughout the world. In the U.S. in particular, it is increasing ...
molecules
... further denoted as 68Ga-DKFZ-PSMA-11) suggested that it detects PC relapses and metastases with higher contrast as compared to 18F-labeled choline [20]. The conjugation of HBED-CC enabled the research group to produce highly-specific activities of 68Ga-DKFZ-PSMA-11 [21] and clinical experience show ...
... further denoted as 68Ga-DKFZ-PSMA-11) suggested that it detects PC relapses and metastases with higher contrast as compared to 18F-labeled choline [20]. The conjugation of HBED-CC enabled the research group to produce highly-specific activities of 68Ga-DKFZ-PSMA-11 [21] and clinical experience show ...
Dose issues on multi-slice CT scanners
... site to site results in dose differences much greater than those due to scanner design factors. The increased capabilities of multi-slice scanners, which allow higher mAs values, longer scan lengths and multi-phase contrast studies, have the potential of directly increasing patient doses. Another in ...
... site to site results in dose differences much greater than those due to scanner design factors. The increased capabilities of multi-slice scanners, which allow higher mAs values, longer scan lengths and multi-phase contrast studies, have the potential of directly increasing patient doses. Another in ...
The uses of radiotracers in the life sciences
... 2.2. Reactors Following the Second World War reactors began to be used for a number of research areas including radionuclide production. The use of nuclear reactors for the production of radionuclides relies on the fact that during the fission process in a reactor, there are large numbers of neutron ...
... 2.2. Reactors Following the Second World War reactors began to be used for a number of research areas including radionuclide production. The use of nuclear reactors for the production of radionuclides relies on the fact that during the fission process in a reactor, there are large numbers of neutron ...
Role of CEUS (Contrast-Enhanced Ultrasound) in the differentiation
... (bolus and continuous) since bolus injection is the standard method of injecting for noncardiac indications, we used the bolus injection with single intravenous injection and for the dose, as Saracco et al. have determined, we used 4.8mL of contrast agent, rather than 2.4 or 1.2mL, for the better im ...
... (bolus and continuous) since bolus injection is the standard method of injecting for noncardiac indications, we used the bolus injection with single intravenous injection and for the dose, as Saracco et al. have determined, we used 4.8mL of contrast agent, rather than 2.4 or 1.2mL, for the better im ...
image guided radiation therapy applications for
... 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 external electron beam treatments for breast cancer patients who underwent breast conserving surgery. ...
... 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 external electron beam treatments for breast cancer patients who underwent breast conserving surgery. ...
Cone Beam Computed Tomography
... literature, studies on technical efficacy and diagnostic efficacy dominate. This is also the case for the CBCT technique. De Vos and co-workers (2009) reviewed the literature on CBCT imaging of the oral and maxillofacial region. The search period covered a time period from 1998 to December 2007 and ...
... literature, studies on technical efficacy and diagnostic efficacy dominate. This is also the case for the CBCT technique. De Vos and co-workers (2009) reviewed the literature on CBCT imaging of the oral and maxillofacial region. The search period covered a time period from 1998 to December 2007 and ...
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.