Low-Dose Spiral CT: Application to Surface-Rendered Three-Dimensional Imaging of Central Airways

Abstract

Image quality of surface-rendered three-dimensional images of the central airways is preserved using a lower tube current.

Tracheobronchomalacia in Infants and Children: Multidetector CT Evaluation

“…Furthermore, employing z-axis modulation, which acquires images at a userspecified image noise level with reduced tube current-time product, can further decrease the radiation dose (31). In general, due to the inherently high contrast between the air-filled tracheal lumen and adjacent softtissue attenuation of the mediastinum, milliamperage can be reduced without negatively affecting the diagnostic capability of multidetector CT in evaluating TBM (32)(33)(34)(35).…”

Assessment of Foreign Body Aspiration Material Using a Virtual Bronchoscopy Model: Time-Density and Time-Volume Relationships

“…In recent years, VB, as a non-invasive, non-contrast used imaging technique has been recommended for detection of foreign bodies in the tracheobronchial tree due to its high diagnostic value (11,12). Absence of aspiration history in 30% of FBA cases, nonobservation of 90% of aspirated foreign bodies on radiography due to nonopaque appearance of organic foreign bodies, lack of abnormal findings on chest radiographs in 16% -34% of cases and probability of rigid bronchoscopy complications resulted in increased utility of VB in patients suspicious of FBA.…”

An Adult Patient with Pneumonia Due to Aspiration of Dental Prosthesis

“…Tetkikler ve akciğer grafileri sonrası ıs-rarlı sorgulamalarımızdan sonra hasta 4 ay önce diş protezinin uykuda kaybolduğunu ve sonrasında gelişen nefes darlığında bu durumu doktorlardan sakladığını belirtmiştir. Çin' de yapılmış bir çalışmada, yabancı cisim aspirasyonu tanı-sı konulan erişkin hastalar doktora en çok kronik öksürük(%67) olmak üzere, hemoptizi(%23), ateş (%19), nefes darlığı (%16) şikâyetleri ile başvurmuştur [4]. Yabancı cisimler arasında ilk sı-rayı % 47 ile tavuk ya da balık kemiği alırken diğerleri diş ya da dental materyal (%23), gıda parçası (%16) ve ilaç tabletiydi (%7).…”