Clinical nuclear medicine
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Clinical nuclear medicine · May 2013
Case ReportsClassical skeletal injuries shown on 18F-FDG PET/CT following successful cardiopulmonary resuscitation.
Rib and sternal fractures are relatively common following conventional cardiopulmonary resuscitation (CPR). This case demonstrates the 18F-FDG PET/CT appearances of typical CPR-related multiple rib and sternal fractures in a 55-year-old man with suspected cardiac sarcoidosis. The PET/CT scan was performed to assess disease activity of cardiac sarcoidosis, and no active cardiac inflammation was detected. The patient initially presented with an out-of-hospital cardiac arrest and successfully received bystander CPR.
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Clinical nuclear medicine · Apr 2013
Can (18)F-FDG PET/CT reliably assess response to primary treatment of head and neck cancer?
Where chemoradiotherapy or radiotherapy alone with curative intent is used as the primary treatment of locally advanced head and neck cancers, salvage surgery may offer a second chance of cure in the face of recurrent or residual disease. Early detection of recurrent or residual disease is therefore the key to facilitating timely and efficacious salvage surgery. CT and MRI can be difficult to interpret in the posttreatment neck. Functional imaging, such as F-FDG PET/CT, has the potential to improve restaging accuracy. The aim of our study was to assess the efficacy of F-FDG PET/CT performed 3 months following primary treatment of head and neck cancer. ⋯ F-FDG PET/CT is an accurate method for assessing response after primary locally advanced head and neck cancer treatment. Although false-positive scans are rare, a few patients will have a relapse after a negative scan, and so continued close follow-up is required.
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Clinical nuclear medicine · Mar 2013
The clinical value of dual-time point 18F-FDG PET/CT for differentiating extrahepatic cholangiocarcinoma from benign disease.
The aim of this study was to assess the value of dual-time point PET/CT in the differentiation of extrahepatic cholangiocarcinoma from benign stricture and the added benefits of delayed PET/CT image. ⋯ SUVmax from both early and delayed PET/CT scans are useful parameters in the differentiation of extrahepatic biliary malignancy from benign disease. However, there was no added benefit of delayed PET/CT in patients suspicious for extrahepatic cholangiocarcinoma.
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Clinical nuclear medicine · Feb 2013
Prevalence of stress reaction in the pars interarticularis in pediatric patients with new-onset lower back pain.
Spondylolysis is a defect of the pars interarticularis and is most commonly encountered in the lower lumbar spine of pediatric patients. Stress reaction of the pars interarticularis was regarded as an early stage of this pathological diagnosis in which no obvious anatomical change is detected. Both SPECT with (99m)Tc MDP and CT of the lumbar spine have been used to evaluate the patients with low back pain. The purpose of this study was to determine the prevalence of stress reaction in pars interarticularis in pediatric patients presenting new-onset back pain using both bone SPECT and CT. ⋯ Our result showed that a significant portion (19.6%, 11 of 56) of the stress injuries in the pars interarticularis will be CT-negative stress reaction in pediatric patients with new-onset back pain.
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Clinical nuclear medicine · Feb 2013
MRI and FDG PET/CT findings of hepatic epithelioid hemangioendothelioma.
The aim of this study was to evaluate retrospectively magnetic resonance imaging (MRI) and (18)F fluorodeoxyglucose positron emission tomography/computed tomography (FDG PET/CT) findings of hepatic epithelioid hemangioendothelioma (HEH). ⋯ MRI demonstrated morphological features of HEH and FDG PET/CT reflected the histopathological composition of the tumors. FDG uptake of HEH may be related to tumor cellularity, but not the tumor size. Dual-time-point imaging may be not useful for differentiating benign lesions from HEH. Familiarity with the morphological and functional imaging findings of HEH is useful for recognition of this rare hepatic tumor.