منابع مشابه
Lung CT Scan
In the last 20 years, the use of computed tomography (CT) to evaluate thoracic diseases has rapidly gained popularity and CT has become firmly established as an important research and diagnostic modality. In particular, CT has played an important role in improving our knowledge about the pathophysiology of the adult respiratory distress syndrome (ARDS) and in determining the morphological and f...
متن کاملCT Scan Directed Transbronchial
Study objectives: This study was performed to determine whether transbronchial needle aspiration (TBNA) biopsy under CT guidance can increase its diagnostic yield so that this technique can be used for staging of lung cancer at our institution. Study design: After an initial unacceptable low yield of TBNA on the first 10 patients (20% positive), we switched the biopsy procedure from the broncho...
متن کاملمدلسازی قطعات صنعتی توسط عکس برداری ct scan
در این پروژه روشی برای مدل سازی قطعات صنعتی از عکسهای ct ارائه شده است. در فصل دوم فیزیک پرتو برداری ct و تولید تصویر به اختصار توضیح داده شده است. در فصل سوم الگوریتمهای پردازش تصویر که در این پروژه به کار رفته شرح داده شده است. توسط این الگوریتم ها عمل قطعه بندی و شناسایی لبه انجام می شود که در فصل مذکور روش های لبه یابی به کمک الگوریتم sobel و canny و مزایا و معایب هر کدام تشریح شده است و در...
15 صفحه اولEstimate bowtie filter shape in PET/CT scan with TLD
Introduction: The CT machine utilizes a bowtie filter to shape the X-ray beam and remove lower energy photons. Configuration of this bowtie filter is complex and its geometry is often not available in detail. It causes the CT dose index (CTDI) be with the different values in measurement versus Monte Carlo simulation studies and other analytical calculations. It is important esp...
متن کاملIndications and timing for CT scan in traumatic brain injury and analysis of CT scan findings
Trauma is a major health problem and is a leading cause of death in the age group 1 – 45 yrs. Head injuries caused or contributed to death in most trauma fatalities. The primary goal of imaging the trauma patient is to quickly and accurately identify treatable lesions before secondary injury to the brain occurs. CT scan is ideally suited to evaluate patients immediately after trauma. Head injur...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Diagnostic radiology and radiotherapy
سال: 2018
ISSN: 2079-5343
DOI: 10.22328/2079-5343-2018-9-1-162-169