radiation medicine qa
... lines, which is not least thanks to our historic commitment to first-class production – not mass production! The fact that PTW systems are still being used, which were installed more than 30 years ago, testifies for the quality of our products. In contrast to common practice, we still maintain a hig ...
... lines, which is not least thanks to our historic commitment to first-class production – not mass production! The fact that PTW systems are still being used, which were installed more than 30 years ago, testifies for the quality of our products. In contrast to common practice, we still maintain a hig ...
Myocardial Perfusion Imaging With Rb-82 PET
... 1.1 Myocardial Perfusion Imaging (MPI) ....................................................1 1.2 PET vs . SPECT ......................................................................................5 1.3 Rubidium-82 PET for Myocardial Perhsion Imaging ...........................9 1.4 Assessment of M ...
... 1.1 Myocardial Perfusion Imaging (MPI) ....................................................1 1.2 PET vs . SPECT ......................................................................................5 1.3 Rubidium-82 PET for Myocardial Perhsion Imaging ...........................9 1.4 Assessment of M ...
15 - Biblio UGent
... seventh decades. Pain is a prominent feature in both tumors. As these tumors are mostly solitary, multiplicity is always suggestive for metastasis from another site. Whereas cutaneous leiomyosarcomas metastasize in 10 % of the cases, or less, subcutaneous lesions metastasize in 30-40 % of cases. The ...
... seventh decades. Pain is a prominent feature in both tumors. As these tumors are mostly solitary, multiplicity is always suggestive for metastasis from another site. Whereas cutaneous leiomyosarcomas metastasize in 10 % of the cases, or less, subcutaneous lesions metastasize in 30-40 % of cases. The ...
MRI Accreditation Program Requirements
... reimbursement. This rule affects providers of MRI, CT, PET and nuclear medicine imaging services for Medicare beneficiaries on an outpatient basis. For accredited facilities that receive reimbursement from Medicare for the technical component of imaging examinations under the Fee Schedule there are ...
... reimbursement. This rule affects providers of MRI, CT, PET and nuclear medicine imaging services for Medicare beneficiaries on an outpatient basis. For accredited facilities that receive reimbursement from Medicare for the technical component of imaging examinations under the Fee Schedule there are ...
Film and digital periapical radiographs for the measurement of
... film is still commonly used as it is an inexpensive and reliable image receptor (5). An alternative option to a fully digital system is to convert conventional film radiographs to digital images by scanning (6). This allows image quality to be enhanced (when necessary) and the images can be quantita ...
... film is still commonly used as it is an inexpensive and reliable image receptor (5). An alternative option to a fully digital system is to convert conventional film radiographs to digital images by scanning (6). This allows image quality to be enhanced (when necessary) and the images can be quantita ...
3017 Head to Toe 2003 Spreads
... principles. It will also upgrade the participants’ knowledge of the specialty, reinforce information already available, and discuss practice patterns so that radiologists can improve the quality of patient care. The name of the course, “CT/MRI: Head to Toe”, is an accurate description of the intent ...
... principles. It will also upgrade the participants’ knowledge of the specialty, reinforce information already available, and discuss practice patterns so that radiologists can improve the quality of patient care. The name of the course, “CT/MRI: Head to Toe”, is an accurate description of the intent ...
X-RAY
... bones broken at different levels. An angulating force causes a transverse fracture of both bones at the same level. A direct blow causes a transverse fracture of just one bone, usually the ulna. Bleeding and swelling of the muscle compartments of the forearm may cause ...
... bones broken at different levels. An angulating force causes a transverse fracture of both bones at the same level. A direct blow causes a transverse fracture of just one bone, usually the ulna. Bleeding and swelling of the muscle compartments of the forearm may cause ...
Technical advancements and protocol optimization of diffusion
... In EPI sequence, the chemical shift of fat resonance causes a large displacement of fat signal along the phase encoding direction. If the fat signal is not completely suppressed, it may super impose on the region of interest. Therefore, for DW-EPI in abdomen where fatty tissue is extensively present ...
... In EPI sequence, the chemical shift of fat resonance causes a large displacement of fat signal along the phase encoding direction. If the fat signal is not completely suppressed, it may super impose on the region of interest. Therefore, for DW-EPI in abdomen where fatty tissue is extensively present ...
Special Article Artifacts Associated with MR Neuroangiography
... sinus occlusion (13), and arteriovenous malformations (14). Despite the initial success of this technique and its impending widespread routine clinical application, little has been said of the potential artifacts and pitfalls of this new technique (15 , 16). Some of these problems can be attributed ...
... sinus occlusion (13), and arteriovenous malformations (14). Despite the initial success of this technique and its impending widespread routine clinical application, little has been said of the potential artifacts and pitfalls of this new technique (15 , 16). Some of these problems can be attributed ...
14 Contrast Media
... T2 relaxation. In this relaxation process, the excess energy deposited in the tissue by the RF pulse is subsequently transferred between magnetic spins. This transferred energy results in loss of spin phase coherency in the transverse plane and spin dephasing. Contrast agent enhancement that is base ...
... T2 relaxation. In this relaxation process, the excess energy deposited in the tissue by the RF pulse is subsequently transferred between magnetic spins. This transferred energy results in loss of spin phase coherency in the transverse plane and spin dephasing. Contrast agent enhancement that is base ...
Relationship between Noise, Dose, and Pitch in Cardiac Multi
... relationship of dose to pitch is unchanged. However, this paradigm is valid only for routine spiral multi– detector row CT reconstruction algorithms, as the special algorithms for cardiac multi– detector row CT alter the noise versus pitch relationship for yet a third time. Noncardiac Mode.—As discu ...
... relationship of dose to pitch is unchanged. However, this paradigm is valid only for routine spiral multi– detector row CT reconstruction algorithms, as the special algorithms for cardiac multi– detector row CT alter the noise versus pitch relationship for yet a third time. Noncardiac Mode.—As discu ...
Improved Detection and Delineation of Head and Neck Lesions with
... anatomy often appeared unsatisfactory on the fat suppression T2-weighted image. The magnetic susceptibility artifact from dentures also was exaggerated on fat suppression images, especially the T2-weighted sequences. The fat suppression technique we used is a modification of the chopper fat suppress ...
... anatomy often appeared unsatisfactory on the fat suppression T2-weighted image. The magnetic susceptibility artifact from dentures also was exaggerated on fat suppression images, especially the T2-weighted sequences. The fat suppression technique we used is a modification of the chopper fat suppress ...
ENGINEERING ASPECTS OF SURGERY
... and perform surgical actions accordingly. The anatomical model used for navigation is constructed from preoperative CT or MRI data. The locations of instruments and rigid anatomy are obtained in real time by attaching to them frames with light-emitting diodes that are accurately tracked with a stere ...
... and perform surgical actions accordingly. The anatomical model used for navigation is constructed from preoperative CT or MRI data. The locations of instruments and rigid anatomy are obtained in real time by attaching to them frames with light-emitting diodes that are accurately tracked with a stere ...
The effectiveness of Power Doppler vocal fremitus imaging in the
... imaging. US and power Doppler examinations were performed with a 5-14 MHz transducer (Antares, Siemens, Erlangen, Germany). Patients were scanned in a contralateral posterior oblique position, with the ipsilateral hand behind the head, in order to minimize breast tissue thickness. Initially, clockwi ...
... imaging. US and power Doppler examinations were performed with a 5-14 MHz transducer (Antares, Siemens, Erlangen, Germany). Patients were scanned in a contralateral posterior oblique position, with the ipsilateral hand behind the head, in order to minimize breast tissue thickness. Initially, clockwi ...
The Elbow: Radiographic Imaging Pearls and Pitfalls
... Figure 3 Anterior humeral and radio-capitellar lines. (A) Anterior humeral line (white line) is drawn along the anterior humeral margin of well-positioned lateral elbow view. Anterior humeral line should normally intersect the middle one-third of capitellum ossification center. Anterior or posterior ...
... Figure 3 Anterior humeral and radio-capitellar lines. (A) Anterior humeral line (white line) is drawn along the anterior humeral margin of well-positioned lateral elbow view. Anterior humeral line should normally intersect the middle one-third of capitellum ossification center. Anterior or posterior ...
Institutionen för medicin och hälsa Department of Medical and Health Sciences
... Magnetic Resonance Imaging (MRI) is an important and widely used medical imaging technique used in the routine clinical workflow worldwide, particularly for soft tissue visualizations in neurological applications. The technique was first put into clinical use in the 1980s [1] and it has developed ra ...
... Magnetic Resonance Imaging (MRI) is an important and widely used medical imaging technique used in the routine clinical workflow worldwide, particularly for soft tissue visualizations in neurological applications. The technique was first put into clinical use in the 1980s [1] and it has developed ra ...
Carter: Digital Radiography and PACS
... d. Examinations requires much higher kilovoltage peak values ANS: B OBJ: Describe the grid selection process. TOP: Grid selection 17. The number of grid lines per centimeter or lines per inch describes grid ______. a. Frequency b. Ration c. Focus d. Size ANS: A OBJ: Describe the grid selection proce ...
... d. Examinations requires much higher kilovoltage peak values ANS: B OBJ: Describe the grid selection process. TOP: Grid selection 17. The number of grid lines per centimeter or lines per inch describes grid ______. a. Frequency b. Ration c. Focus d. Size ANS: A OBJ: Describe the grid selection proce ...
Recognizing the Empty - American Journal of Neuroradiology
... We studied 26 patients in whom an empty sella was recog nized by CT. All patients were c haracterized by en largement of the sella turci ca and normal nonspecific neurologic and endocrine evaluation. The CT studies were performed on a GE CT IT 8800 . The patients were positioned supine with their ne ...
... We studied 26 patients in whom an empty sella was recog nized by CT. All patients were c haracterized by en largement of the sella turci ca and normal nonspecific neurologic and endocrine evaluation. The CT studies were performed on a GE CT IT 8800 . The patients were positioned supine with their ne ...
Magnetic resonance elastography: a rewiev
... directive limiting professional exposure to vibrations of the whole body and extremities [57]. Several propelling mechanisms were developed over the years, each with its own advantages and disadvantages [58]. One of the widely used methods of generating vibrations necessary for MRE uses movement in ...
... directive limiting professional exposure to vibrations of the whole body and extremities [57]. Several propelling mechanisms were developed over the years, each with its own advantages and disadvantages [58]. One of the widely used methods of generating vibrations necessary for MRE uses movement in ...
Calculation, verification and monitoring of patient dose in Diagnostic
... program was previously developed for a different piece of imaging equipment to replicate the dose distribution and determine the region of maximum dose on the patient’s back. This was adapted for the local equipment. Gafchromic film was used to produce a visual indication of how the dose would be di ...
... program was previously developed for a different piece of imaging equipment to replicate the dose distribution and determine the region of maximum dose on the patient’s back. This was adapted for the local equipment. Gafchromic film was used to produce a visual indication of how the dose would be di ...
Quantitative SPECT reconstruction using CT
... to the degrading effects of attenuated and scattered photons. In addition, quantitative values from structures that have a diameter less than approximately three times the total system ...
... to the degrading effects of attenuated and scattered photons. In addition, quantitative values from structures that have a diameter less than approximately three times the total system ...
Author`s personal copy - Krankenhaus Rummelsberg
... ankle surgery is radiographs with full weight bearing [5]. The three-dimensional relationships of the bones in the foot are difficult to assess with standard radiographs due to superimposition of the different bones [1]. Angle measurements with standard radiographs could be inaccurate due to inaccura ...
... ankle surgery is radiographs with full weight bearing [5]. The three-dimensional relationships of the bones in the foot are difficult to assess with standard radiographs due to superimposition of the different bones [1]. Angle measurements with standard radiographs could be inaccurate due to inaccura ...
magnetic resonance elastography - Collegium Medicum
... directive limiting professional exposure to vibrations of the whole body and extremities [57]. Several propelling mechanisms were developed over the years, each with its own advantages and disadvantages [58]. One of the widely used methods of generating vibrations necessary for MRE uses movement in ...
... directive limiting professional exposure to vibrations of the whole body and extremities [57]. Several propelling mechanisms were developed over the years, each with its own advantages and disadvantages [58]. One of the widely used methods of generating vibrations necessary for MRE uses movement in ...
R32 - American College of Radiology
... Radiology, the American Osteopathic Board of Radiology, the Royal College of Physicians and Surgeons of Canada, or the Collège des Médecins du Québec, and involvement with the supervision and/or performance, interpretation, and reporting of 300 ultrasound examinations within the last 36 months2. or ...
... Radiology, the American Osteopathic Board of Radiology, the Royal College of Physicians and Surgeons of Canada, or the Collège des Médecins du Québec, and involvement with the supervision and/or performance, interpretation, and reporting of 300 ultrasound examinations within the last 36 months2. or ...