نتایج جستجو برای: ct scan images

تعداد نتایج: 420213  

After thyroidectomy in papillary thyroid carcinoma (PTC) patients, whole body radioiodine scan (WBIS) is necessary for localization of any abnormal radioiodine avid lesions. However false-positive radioiodine uptake in WBIS can be problematic. We report a 32 years old female patient with PTC. After thyroidectomy and radioiodine therapy WBIS was performed. In her post therapy WBIS, there were zo...

2011
Jae G Kim Seung O Jin Min H Cho Soo Y Lee

BACKGROUND Despite its superb lateral resolution, flat-panel-detector (FPD) based tomosynthesis suffers from low contrast and inter-plane artifacts caused by incomplete cancellation of the projection components stemming from outside the focal plane. The incomplete cancellation of the projection components, mostly due to the limited scan angle in the conventional tomosynthesis scan geometry, oft...

2014
Bhawna Gupta Shamik Tiwari

Throughout the world the common cause of death in humans is lung cancer. It is necessary to detect cancer as early as possible to increase the survival rate. Lung cancer in CT scan images can be classified easily and efficiently using digital image processing techniques. Curvelet transform can extract the features of lung cancer CT scan images proficiently. All extracted feature by curvelet tra...

Journal: :PET clinics 2013
Tinsu Pan Habib Zaidi

This article discusses attenuation correction strategies in positron emission tomography/computed tomography (PET/CT) and 4-dimensional PET/CT imaging. Average CT scan derived from averaging the high temporal resolution CT images is effective in improving the registration of the CT and the PET images and quantification of the PET data. It underscores list-mode data acquisition in 4-dimensional ...

2010
Tzyy-Ling Chuang Yuh-Feng Wang Chun-Liang Lai

We present the characteristics of a ventilation-perfusion scan correlating to both planar and single photon emission computed tomography and computed tomography (SPECT/CT) images of the lungs in a patient with SwyerJames (MacLeod) syndrome. A Tc-99m MAA lung perfusion scan was recorded with multiple projections and SPECT/CT. In the ventilation scan, initially dynamic acquisition of aerosol Tc-9...

Journal: :Computerized Medical Imaging and Graphics 2012

Journal: :Asian Pacific journal of cancer prevention : APJCP 2011
Razieh Dehghani Firoozabadi Mojgan Karimi Zarchi Hamid Reza Mansurian Bita Rafiei Moghadam Soraya Teimoori Ali Naseri

OBJECTIVE Because benign and malignant cervical and ovarian masses occur with different percentages in different age groups, the importance of primary diagnosis and selection of a suitable surgical procedure is underlined. Diagnosis of pelvic masses is carried out using ultrasound, physical examination, CT scan and MRI. The objective of this study is to evaluate the diagnostic value of CT scan ...

Journal: :International Journal of Computer Applications 2015

Journal: :Journal of Intelligent and Fuzzy Systems 2021

Nowadays, Coronavirus (COVID-19) considered one of the most critical pandemics in earth. This is due its ability to spread rapidly between humans as well animals. COVID-19 expected outbreak around world, 70 % earth population might infected with incoming years. Therefore, an accurate and efficient diagnostic tool highly required, which main objective our study. Manual classification was mainly ...

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