Ebook Diagnostic imaging nuclear: Part 2
➤ Gửi thông báo lỗi ⚠️ Báo cáo tài liệu vi phạmNội dung chi tiết: Ebook Diagnostic imaging nuclear: Part 2
Ebook Diagnostic imaging nuclear: Part 2
Diagnostic Imaging NuclearMR of patient at left shows enhancement of a soft tissue mass KI Calvarial enhancement confirms metastatic involvement raTyp Ebook Diagnostic imaging nuclear: Part 2pical(Left) Coronal PET shows focal hypermetabolic activity in perineural spread of head and neck carcinoma Ki. (Right) Coronal CE T1WI MR of patient at left shows enhancement in the region of the cavernous sinus K2, signifying perineural spread and corresponding to focal hypermetabolic activity on Ebook Diagnostic imaging nuclear: Part 2PET.Typical(Left) Axial PET shows two focal hypermetabolic lesions Klin patient with primary CNS lymphoma that metastasized throughout brain. (Right)Ebook Diagnostic imaging nuclear: Part 2
Axial T2WI MR of patient at left shows two focal enhancing masses Ki corresponding to focal hypermetabolic activity on PET.Radiation Necrosis vs RecurDiagnostic Imaging NuclearMR of patient at left shows enhancement of a soft tissue mass KI Calvarial enhancement confirms metastatic involvement raTyp Ebook Diagnostic imaging nuclear: Part 2r reversible encephalopathy syndrome (PRES), radiation injury, radiation-induced tumorsImaging Findings•Multivoxel MRS: Characteristic patterns in recurrent tumor, radiation necrosis600Diagnostic Imaging Nuclear•FDG PET: Tendency for increased metabolism in recurrent tumor, low in radiation necrosis Ebook Diagnostic imaging nuclear: Part 2•However, FDG PET currently not typically reimbursed for radiation necrosis vs. recurrent brain tumorTop Differential Diagnoses•Abscess•Multiple SclerEbook Diagnostic imaging nuclear: Part 2
osis•Vascular Dementia•Progressive Multifocal LeukoencephalopathyPathology•XRT: Spectrum from edema to cavitating WM necrosis; demyelination; coagulatDiagnostic Imaging NuclearMR of patient at left shows enhancement of a soft tissue mass KI Calvarial enhancement confirms metastatic involvement raTyp Ebook Diagnostic imaging nuclear: Part 2, TI-201 or Tc-99m sestamibi SPECT all options for recurrent tumor from radiation necrosisFused FDG PET/T1 MR shows lack of metabolic activity in region of enhancement at site of XRT consistent with radiation necrosis El. Same patient as next image.601Diagnostic Imaging NuclearFDG PET in same patien Ebook Diagnostic imaging nuclear: Part 2t as previous image shows lack of metabolic activity in region of enhancement on MR Sfollowing XRT, consistent with radiation necrosis.TERMINOLOGYAbbrEbook Diagnostic imaging nuclear: Part 2
eviations and Synonyms•Radiation-induced injury, external radiation (XRT) changes, chemotherapy effects, treatment-related changesDefinitions•IncludesDiagnostic Imaging NuclearMR of patient at left shows enhancement of a soft tissue mass KI Calvarial enhancement confirms metastatic involvement raTyp Ebook Diagnostic imaging nuclear: Part 2RES), radiation injury, radiation-induced tumors•Radiation-induced injury may be divided into acute, early delayed injury, late delayed injuryDiagnostic Imaging NuclearMR of patient at left shows enhancement of a soft tissue mass KI Calvarial enhancement confirms metastatic involvement raTypGọi ngay
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