Abstract:
:In recent years radiation risk from CT scanning has become an important area of investigation. Many authors have suggested that radiation dose can be decreased without loss of diagnostic information. This dose reduction has primarily been achieved through a decrease in tube current. An area that has received little attention has been variations in dose from different CT scanners. To evaluate this aspect of radiation exposure, we measured the radiation dose of 4 different CT scanners. We found that the radiation dose for the same CT technique can vary by as much as a factor of 3 when 1 mm slices are used. CT dose variation was greatest for thin slices, making these observations particularly important for high-resolution CT. Our measurement technique used standard quality assurance equipment available in most radiology departments. Use of these measurements to assess the radiation dose from different CT scanners is an easily performed technique that may allow a decrease in radiation exposure in departments by choosing the most appropriate intra departmental CT scanner for specific indications.
journal_name
J Thorac Imagingjournal_title
Journal of thoracic imagingauthors
Cassese JA,Brody AS,Thomas SRdoi
10.1097/00005382-200310000-00006subject
Has Abstractpub_date
2003-10-01 00:00:00pages
242-5issue
4eissn
0883-5993issn
1536-0237journal_volume
18pub_type
杂志文章abstract::Pleural infection by Cryptococcus neoformans is uncommon and when present typically occurs in the immunocompromised host. We report two renal transplant patients who developed pleural cryptococcosis. ...
journal_title:Journal of thoracic imaging
pub_type: 杂志文章
doi:10.1097/00005382-199004000-00012
更新日期:1990-04-01 00:00:00
abstract:PURPOSE:To explore the correlation between a septal angle measured on computed tomographic pulmonary angiography (CTPA) and pulmonary vascular resistance (PVR) determined by right heart catheterization in patients with chronic thromboembolic pulmonary hypertension (CTEPH). MATERIALS AND METHODS:Eighty-six patients wit...
journal_title:Journal of thoracic imaging
pub_type: 杂志文章
doi:10.1097/RTI.0b013e3182541142
更新日期:2012-09-01 00:00:00
abstract::Lung cancer is the most common thoracic malignancy caused by exposures at work and in the environment. The most unique thoracic malignancy is mesothelioma, because it is relatively rare and one of only a few neoplasms for which one specific inciting agent-asbestos-has been identified. Based on epidemiologic studies, a...
journal_title:Journal of thoracic imaging
pub_type: 杂志文章,评审
doi:10.1097/00005382-200207000-00003
更新日期:2002-07-01 00:00:00
abstract:PURPOSE:We have established an integrated thoracic radiology reading room within a multidisciplinary lung center clinic (LC). While our subjective experience has been positive, we sought to quantify how this model affects radiology workflow and whether the referring practitioners perceive value in having real-time acce...
journal_title:Journal of thoracic imaging
pub_type: 杂志文章
doi:10.1097/RTI.0000000000000331
更新日期:2018-07-01 00:00:00
abstract::The current Dana Point Classification system (2009) distinguishes elevation of pulmonary arterial pressure into pulmonary arterial hypertension (PAH) and pulmonary hypertension. Fortunately, PAH is not a common disease. However, with the aging of the First World's population, heart failure has become an important outc...
journal_title:Journal of thoracic imaging
pub_type: 杂志文章,评审
doi:10.1097/RTI.0b013e31828d5c48
更新日期:2013-05-01 00:00:00
abstract::Common variable immunodeficiency (CVID) is associated with significant chronic lung disease. The purpose of this paper was to describe the clinical, radiologic, and pathologic findings of CVID-associated lung diseases. These include airways' disease, interstitial lung disease, lymphoma, and mucosa-associated lymphoid ...
journal_title:Journal of thoracic imaging
pub_type: 杂志文章,评审
doi:10.1097/RTI.0000000000000350
更新日期:2018-11-01 00:00:00
abstract:PURPOSE:Ultrashort echotime (UTE) sequences aim to improve the signal yield in pulmonary magnetic resonance imaging (MRI). We demonstrate the initial results of spiral 3-dimensional (3D) UTE-MRI for combined morphologic and functional imaging in pediatric patients. METHODS:Seven pediatric patients with pulmonary abnor...
journal_title:Journal of thoracic imaging
pub_type: 杂志文章
doi:10.1097/RTI.0000000000000537
更新日期:2021-01-01 00:00:00
abstract::Although rounded atelectasis was recognized in 1928, its relationship to fibrotic pleural disease almost has gone unnoticed. We present four cases of lobar rounded atelectasis that help to clarify this relationship. Rounded atelectasis is part of the spectrum of fibrous pleural disease. Any portion of lung may become ...
journal_title:Journal of thoracic imaging
pub_type: 杂志文章
doi:10.1097/00005382-199323000-00008
更新日期:1993-10-01 00:00:00
abstract::Immunocompromised hosts have defects in their immune system that make them at risk of developing a variety of infections. In addition, these persons may develop a wide variety of noninfectious disease processes that involve the lung. These disorders may be caused by the underlying disease process. This may be seen wit...
journal_title:Journal of thoracic imaging
pub_type: 杂志文章,评审
doi:10.1097/00005382-199901000-00002
更新日期:1999-01-01 00:00:00
abstract::Kimura's disease is a rare, chronic inflammatory disease characterized by subcutaneous nodules in the head and neck regions associated with regional cervical lymphadenopathy. Following its recognition as a pathologic entity, numerous reports have been published detailing the pathogenesis, radiologic manifestations, an...
journal_title:Journal of thoracic imaging
pub_type: 杂志文章,评审
doi:10.1097/01.rti.0000181522.10263.c5
更新日期:2005-11-01 00:00:00
abstract::Pulmonary vasculitis occurs most commonly in the collagen vascular diseases and in granulomatous pulmonary disease. In the collagen vascular group, vasculitis causes diffuse interstitial inflammation and subsequent fibrosis, resulting in interstitial radiographic patterns, especially in the lower lung fields. Vasculit...
journal_title:Journal of thoracic imaging
pub_type: 杂志文章
doi:10.1097/00005382-198801000-00006
更新日期:1988-01-01 00:00:00
abstract::Imaging of the coronary sinus and its tributaries has gained increasing significance consequent to the development of an array of electrophysiological and interventional procedures using the cardiac venous system, including ablation for arrhythmias, left ventricular pacing, and in the administration of retrograde card...
journal_title:Journal of thoracic imaging
pub_type: 杂志文章,评审
doi:10.1097/RTI.0000000000000456
更新日期:2020-03-01 00:00:00
abstract::We report a patient with mediastinal lymphangioma, with plain film and computed tomographic findings that suggested the diagnosis of thymic cyst. The differential diagnosis and magnetic resonance imaging of mediastinal lymphangioma are discussed. ...
journal_title:Journal of thoracic imaging
pub_type: 杂志文章
doi:10.1097/00005382-199112000-00012
更新日期:1991-12-01 00:00:00
abstract::Epipericardial fat necrosis is an unusual clinical condition of unknown etiology first reported in the literature in 1957. It presents as an acute onset of chest pain and a well-defined juxtacardiac mass. Computed tomographic findings of this condition demonstrate a fat-attenuation mass that resolves over time. We pre...
journal_title:Journal of thoracic imaging
pub_type: 杂志文章,评审
doi:10.1097/RTI.0b013e3181fa6d7c
更新日期:2011-11-01 00:00:00
abstract::The availability of the less invasive techniques such as CT, MRI, and digital angiography require reexamination of the indications for conventional screen-film aortography. Because of poor image quality, IV digital subtraction angiography should be limited to congenital aortic disease and follow-up cases. Intraarteria...
journal_title:Journal of thoracic imaging
pub_type: 杂志文章,评审
doi:10.1097/00005382-199010000-00008
更新日期:1990-10-01 00:00:00
abstract::Future radionuclide studies in the lung will encompass not only improved evaluation of regional ventilation and perfusion in pulmonary embolism and lung cancer, but should also provide new information about alveolar-capillary permeability, cell kinetics in the lung, and pulmonary metabolism and receptors. With this in...
journal_title:Journal of thoracic imaging
pub_type: 杂志文章
doi:10.1097/00005382-198603000-00011
更新日期:1986-03-01 00:00:00
abstract::The ease of performing computed tomography (CT)-guided radiologic procedures with the patient in the prone position can be compromised by patient discomfort. This is especially true during transthoracic needle aspiration biopsy when sedation or analgesia may interfere with the patient's ability to cooperate. The Glenn...
journal_title:Journal of thoracic imaging
pub_type: 杂志文章
doi:
更新日期:1994-10-01 00:00:00
abstract::Ehlers-Danlos syndrome (EDS) is an inherited disorder of connective tissue with multiple thoracic manifestations. We present an unusual thoracic manifestation of EDS consisting of parenchymal cysts and fibrous and fibroosseous nodules. These manifestations may be related to an abnormal attempt at repair of parenchymal...
journal_title:Journal of thoracic imaging
pub_type: 杂志文章
doi:10.1097/00005382-199521000-00012
更新日期:1995-04-01 00:00:00
abstract:PURPOSE:To assess the effect of computer-assisted detection (CAD) on diagnostic accuracy, reader confidence, and reading time when used as a concurrent reader for the detection of acute pulmonary embolism in computed tomography pulmonary angiography. MATERIALS AND METHODS:In this institutional review board-approved re...
journal_title:Journal of thoracic imaging
pub_type: 杂志文章
doi:10.1097/RTI.0b013e3182870b97
更新日期:2013-09-01 00:00:00
abstract::A 16-year-old female patient, who had undergone bone marrow transplantation 35 days earlier, presented with dry cough, dyspnea, and fever for 4 days. Chest radiography showed poorly-defined bilateral opacities. High-resolution CT revealed bilateral ground glass opacities with superimposed septal thickening and intralo...
journal_title:Journal of thoracic imaging
pub_type: 杂志文章
doi:10.1097/01.rti.0000131756.13179.ae
更新日期:2004-07-01 00:00:00
abstract::The National Lung Cancer Screening Trial (NLST) found a reduction in lung cancer mortality in high-risk patients aged 55 to 74 who were screened with low-dose computed tomography (LDCT) rather than chest x-ray. This reduction was 20% after 6.5 years and 16% after 7.5 years, with a 6.7% reduction in all-cause mortality...
journal_title:Journal of thoracic imaging
pub_type: 评论,杂志文章
doi:10.1097/RTI.0000000000000130
更新日期:2015-01-01 00:00:00
abstract::The fiberoptic bronchoscope became commercially available nearly 20 years ago. This instrument has revolutionized the practice of respiratory medicine by providing the biggest single advance in diagnostic techniques for the chest in recent years. Its use is now widespread, and it has largely superseded the rigid bronc...
journal_title:Journal of thoracic imaging
pub_type: 杂志文章
doi:10.1097/00005382-198704000-00012
更新日期:1987-04-01 00:00:00
abstract:PURPOSE:Progressive impairment of hemodynamics in patients with Fontan circulation is common, multifactorial, and associated with decreased quality of life and increased morbidity. We sought to assess hemodynamic differences between patients with preserved (preserved Fontans) and those with impaired circulation (impair...
journal_title:Journal of thoracic imaging
pub_type: 杂志文章
doi:10.1097/RTI.0000000000000261
更新日期:2017-05-01 00:00:00
abstract::Non-Hodgkin lymphoma (NHL) rarely arises from tuberculous empyema. We report a case in which magnetic resonance (MR) imaging was useful in separating the lymphoma from the chronic empyema. ...
journal_title:Journal of thoracic imaging
pub_type: 杂志文章
doi:10.1097/00005382-199501010-00008
更新日期:1995-01-01 00:00:00
abstract::Forty years ago there was less interest in thromboembolism than there is now, although it was apparent even at that time that many episodes of embolization were being missed. Retrospective autopsy studies had indicated a 40% to 60% incidence of pulmonary emboli. Such studies were reviewed in a prospective study of 263...
journal_title:Journal of thoracic imaging
pub_type: 杂志文章,评审
doi:10.1097/00005382-198910000-00008
更新日期:1989-10-01 00:00:00
abstract::The increased detection of incidental small pulmonary nodules on multidetector computed tomography has driven attempts to refine the characterization and management of such nodules. A variety of methods have been developed to measure the size and biological activity of nodules to help define their nature, but these ha...
journal_title:Journal of thoracic imaging
pub_type: 杂志文章,评审
doi:10.1097/RTI.0b013e31824f83e1
更新日期:2012-07-01 00:00:00
abstract::Computed tomographic pulmonary angiography has become the diagnostic procedure of choice in patients suspected of having a pulmonary embolus. However, intrapulmonary shunting of blood in a variety of pathologic conditions can cause suboptimal opacification of the pulmonary arterial circulation and result in a suboptim...
journal_title:Journal of thoracic imaging
pub_type: 杂志文章
doi:10.1097/RTI.0b013e318242b4b3
更新日期:2012-11-01 00:00:00
abstract::Zygomycosis is a life-threatening fungal infection, and its successful treatment requires early diagnosis. To establish radiologic and clinical criteria for early diagnosis, we reviewed 3 post-mortem cases with zygomycosis secondary to hematological diseases. In all cases, an irregular dilatation of pulmonary veins on...
journal_title:Journal of thoracic imaging
pub_type: 杂志文章
doi:10.1097/RTI.0b013e3182282d17
更新日期:2012-07-01 00:00:00
abstract::Computed tomography (CT) is commonly used in the evaluation and management of patients with diffuse lung pathologies, including chronic obstructive pulmonary disease (COPD) and fibrotic interstitial lung disease (ILD). In clinical practice, the qualitative (visual) assessment of CT images by a radiologist provides ins...
journal_title:Journal of thoracic imaging
pub_type: 杂志文章
doi:10.1097/RTI.0000000000000440
更新日期:2020-07-01 00:00:00
abstract::Multidetector row computed tomography (MDCT) has been used for cardiothoracic imaging since the advent of 4-slice computed tomography (CT) in 1999. Available since 2004, 64-slice CT systems are currently considered a prerequisite for successfully integrating cardiothoracic CT into routine clinical algorithms. Developm...
journal_title:Journal of thoracic imaging
pub_type: 杂志文章,评审
doi:10.1097/RTI.0b013e3181d7e898
更新日期:2010-05-01 00:00:00