Parham C, et al. Design and implementation of a compact low
... increases as energy is lowered. To obtain adequate transmission through the body and produce an image with an acceptable signal-to-noise ratio, more incident radiation must ...
... increases as energy is lowered. To obtain adequate transmission through the body and produce an image with an acceptable signal-to-noise ratio, more incident radiation must ...
Optimization of image acquisition techniques for dual
... promises to remove conventional limitations, permitting high-performance DE imaging at total dose equivalent to that of a single chest radiograph. Over the last ⬃5 years, clinical DE systems based on FPDs have become available,15,19 renewing interest in a broad spectrum of DE imaging applications an ...
... promises to remove conventional limitations, permitting high-performance DE imaging at total dose equivalent to that of a single chest radiograph. Over the last ⬃5 years, clinical DE systems based on FPDs have become available,15,19 renewing interest in a broad spectrum of DE imaging applications an ...
Magnetic resonance imaging and computed tomography of
... our understanding of ischemia17,18 and lead possibly to innovative therapies.19 Carotid vessel wall imaging,20,21 and improved evaluation of flow within the carotid artery,22 may add as well to our ability to evaluate patients, their risk, and the severity of the disease present. Research focused on ...
... our understanding of ischemia17,18 and lead possibly to innovative therapies.19 Carotid vessel wall imaging,20,21 and improved evaluation of flow within the carotid artery,22 may add as well to our ability to evaluate patients, their risk, and the severity of the disease present. Research focused on ...
Přednášky z lékařské biofyziky Masarykova univerzita v
... Passage of X-rays through Patient's Body X-rays emitted from a small focal area of the anode propagate in all directions. In the tube envelope, some low energy photons are absorbed. Further absorption of these photons occurs in the primary filter, made of aluminium sheet. It absorbs low energy pho ...
... Passage of X-rays through Patient's Body X-rays emitted from a small focal area of the anode propagate in all directions. In the tube envelope, some low energy photons are absorbed. Further absorption of these photons occurs in the primary filter, made of aluminium sheet. It absorbs low energy pho ...
IN VIVO OPTICAL MOLECULAR IMAGING: PRINCIPLES AND
... imaging have been developed recently. These have used either bioluminescence or fluorescence imaging techniques to monitor whole body, providing low cost and the versatility of optical spectroscopy. In this paper, we discuss the common link between cell level and whole body level optical molecular i ...
... imaging have been developed recently. These have used either bioluminescence or fluorescence imaging techniques to monitor whole body, providing low cost and the versatility of optical spectroscopy. In this paper, we discuss the common link between cell level and whole body level optical molecular i ...
X enon X e 133 Gas - Mallinckrodt Pharmaceuticals
... stand in tubing or respirator containers. Loss of radioactivity due to such adherence may render the study nondiagnostic. PRECAUTIONS General Xenon Xe 133 Gas as well as other radioactive drugs, must be handled with care and appropriate safety measures should be used to minimize radiation exposure t ...
... stand in tubing or respirator containers. Loss of radioactivity due to such adherence may render the study nondiagnostic. PRECAUTIONS General Xenon Xe 133 Gas as well as other radioactive drugs, must be handled with care and appropriate safety measures should be used to minimize radiation exposure t ...
![Advantages of monochromatic x-rays for imaging [5745-125]](http://s1.studyres.com/store/data/004013408_1-02c726a5fb71254eeb8fd4a8e3fd4859-300x300.png)
Advantages of monochromatic x-rays for imaging [5745-125]
... numerous crystallites with a mosaicity of 0.4°. This results in a blurring of the virtual focus and finally to a lower spatial resolution. The spatial resolution can be increased by reducing the exit slit width, which, however, would reduce the Xray intensity. An additional effect arises from magnif ...
... numerous crystallites with a mosaicity of 0.4°. This results in a blurring of the virtual focus and finally to a lower spatial resolution. The spatial resolution can be increased by reducing the exit slit width, which, however, would reduce the Xray intensity. An additional effect arises from magnif ...
Chapter 540: Radiology, Nuclear Medicine and Radiation Oncology
... Imaging resources may be distributed throughout the MTF; therefore, imaging resources are covered in other Space Planning Criteria chapters. For example, the Emergency Department (Chapter 350) provides CT and General Radiology rooms, while Women’s Health (Chapter 360) provides Mammography, Fluorosco ...
... Imaging resources may be distributed throughout the MTF; therefore, imaging resources are covered in other Space Planning Criteria chapters. For example, the Emergency Department (Chapter 350) provides CT and General Radiology rooms, while Women’s Health (Chapter 360) provides Mammography, Fluorosco ...
Principles of Radiology
... Uses: Barium swallow to evaluate esophagus, small and large intestines, vessel catheter guidance ...
... Uses: Barium swallow to evaluate esophagus, small and large intestines, vessel catheter guidance ...
Computed Tomography
... all parts of the body in thousands of facilities throughout the world. Projection data are typically acquired in approximately 1 second, and the image is reconstructed in 3 to 5 seconds. One special-purpose scanner described below acquires the projection data for one tomographic image in 50 ms. A ty ...
... all parts of the body in thousands of facilities throughout the world. Projection data are typically acquired in approximately 1 second, and the image is reconstructed in 3 to 5 seconds. One special-purpose scanner described below acquires the projection data for one tomographic image in 50 ms. A ty ...
Cushing`s Syndrome - Diagnostic Imaging Pathways
... MRI is the imaging modality of choice for localisation of pituitary adenoma in pituitary-dependent Cushing's disease (53-75% sensitivity for detecting corticotroph tumour) 5-9 MRI, with the addition of gadolinium, facilitates diagnosis of microadenoma and increases the confidence with which cavernou ...
... MRI is the imaging modality of choice for localisation of pituitary adenoma in pituitary-dependent Cushing's disease (53-75% sensitivity for detecting corticotroph tumour) 5-9 MRI, with the addition of gadolinium, facilitates diagnosis of microadenoma and increases the confidence with which cavernou ...
Case 11495 Duplication of the inferior vena cava in oncologic
... congenital mesocaval shunt and azygos continuation of the IVC in a 10-month-old infant with polysplenia and dextrocardia. During the development of cross sectional imaging, congenital anomalies of the IVC and its tributaries have become more frequently encountered [2]. Vascular structures can be dif ...
... congenital mesocaval shunt and azygos continuation of the IVC in a 10-month-old infant with polysplenia and dextrocardia. During the development of cross sectional imaging, congenital anomalies of the IVC and its tributaries have become more frequently encountered [2]. Vascular structures can be dif ...
Frequently Asked Questions About Clinical Dose Optimization
... examination. The radiation dose index must be exam specific, summarized by series or anatomic area, and documented in a retrievable format. PC.01.03.01 A25 The hospital establishes or adopts diagnostic computed tomography (CT) imaging protocols based on current standards of practice, which address k ...
... examination. The radiation dose index must be exam specific, summarized by series or anatomic area, and documented in a retrievable format. PC.01.03.01 A25 The hospital establishes or adopts diagnostic computed tomography (CT) imaging protocols based on current standards of practice, which address k ...
Anatomic Imaging: Limits
... in the study • At the time of tracer injection all patients had glucose blood level under 160 mg/dl • Whole scan was acquired 60 minutes after i.v. injection of FDG (dose range 222-370 MBq) • CT scan (voltage 140 kV, tube current 60 mA/s) from proximal femur to the base of skull • At the end of CT s ...
... in the study • At the time of tracer injection all patients had glucose blood level under 160 mg/dl • Whole scan was acquired 60 minutes after i.v. injection of FDG (dose range 222-370 MBq) • CT scan (voltage 140 kV, tube current 60 mA/s) from proximal femur to the base of skull • At the end of CT s ...
Standards for Imaging Endpoints in Clinical Trials:
... • Exquisite soft tissue imaging with multiple contrast mechanisms – Lesion size / volume assessment – Good spatial resolution – “Multispectral” data for image segmentation (T1, T2, post-Gd T1, etc.) ...
... • Exquisite soft tissue imaging with multiple contrast mechanisms – Lesion size / volume assessment – Good spatial resolution – “Multispectral” data for image segmentation (T1, T2, post-Gd T1, etc.) ...
SPECT and PET Serve as Molecular Imaging Techniques
... The possibility to obtain fused images of nuclear medicine and radiology modalities with dedicated softwares or hybrid systems improves diagnostic accuracy. Hybrid systems [SPECT/computerized tomography (CT), PET/CT and PET/MRI] are tomographs combining nuclear medicine (SPECT and PET) and radiology ...
... The possibility to obtain fused images of nuclear medicine and radiology modalities with dedicated softwares or hybrid systems improves diagnostic accuracy. Hybrid systems [SPECT/computerized tomography (CT), PET/CT and PET/MRI] are tomographs combining nuclear medicine (SPECT and PET) and radiology ...
DIGITAL RADIOLOGY AND PACS
... In April of 1989 an experimental PACS was installed in the Nagoya University Hospital. The system consisted of three TDIS FILEs, and two high-resolution CRTs were connected to each TDIS- FILE. These units were connected to each other, making it possible to transfer image and information data. Two of ...
... In April of 1989 an experimental PACS was installed in the Nagoya University Hospital. The system consisted of three TDIS FILEs, and two high-resolution CRTs were connected to each TDIS- FILE. These units were connected to each other, making it possible to transfer image and information data. Two of ...
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.