Clinical Case Studies

A male in his 70s with a history of prostate-specific membrane antigen (PSMA)-positive metastatic castration-resistant prostate cancer (mCRPC) underwent routine ⁶⁸Ga-PSMA-11 PET/CT imaging on Biograph mCT Flow™ PET/CT. ⁶⁸Ga-PSMA-11 PET/CT findings confirmed PSMA expression in the metastatic disease, which qualified the patient for ¹⁷⁷Lu-PSMA-617 treatment. The patient received ¹⁷⁷Lu-PSMA-617 therapy followed by fast, multi-bed, quantitative SPECT/CT imaging after each treatment cycle.

Three patients with metastatic prostate cancer underwent sequential, quantitative SPECT/CT on Symbia™ SPECT/CT following a single dose of albumin-bound ¹⁷⁷Lu PSMA-ALB-56. This case series demonstrates the utility of sequential, quantitative SPECT/CT in obtaining accurate time activity curves (TACs) for subsequent dosimetry, which is of key importance for improving therapeutic outcomes while avoiding toxicity.

A 62-year-old female with atypical chest pain and a history of major factors for coronary artery disease (CAD) underwent a ⁸²Rb PET/CT myocardial perfusion study on a Biograph Vision™ PET/CT scanner. This case demonstrates the value of ⁸²Rb myocardial perfusion PET/CT and blood flow estimation in the delineation of multivessel CAD and post-therapy stent occlusion.

An approximately 75-year-old female presenting with a history of bilateral total knee arthroplasty (TKA) and pain in both knees underwent a ^99mTc HMDP bone study on Symbia Pro.specta™ SPECT/CT. This case highlights the clinical utility of xSPECT™ technologies with iterative metal artifact reduction (iMAR) in the detection of TKA prosthetic loosening.

An approximately 75-year-old male with history of posterior spinal stabilization surgery and severe lower back pain underwent a ^99mTc MDP bone study on Symbia Pro.specta™ SPECT/CT to determine the site of bone stress and related pathology. This case illustrates ^99mTc MDP bone SPECT/CT imaging in the evaluation of pain following thoracolumbar spinal fusion surgery.

An approximately 70-year-old female with bilateral femoral intramedullary prostheses presenting with severe pain and slight wound discharge underwent a ^99mTc HMPAO-labeled leukocyte study on Symbia Pro.specta™ SPECT/CT. This case demonstrates the value of using SPECT/CT with radiolabeled leukocytes and iterative metal artifact reduction (iMAR) in the evaluation of bony and prosthetic joint pathologies.

An elderly male with a neuroendocrine tumor (NET) and liver metastases underwent sequential SPECT/CT on Symbia Pro.specta™ SPECT/CT following a therapy dose of ¹⁷⁷Lu DOTATATE. This case demonstrates the value of using xSPECT Quant™ for the reproducible quantification of tracer concentration, which is instrumental for accurate dosimetry.

A 74-year-old male with a primary duodenal tumor underwent ⁶⁸Ga DOTATATE PET/CT staging. This case demonstrates the role of the Biograph Vision Quadra™ in the evaluation of somatostatin-receptor density within neuroendocrine tumor metastases to help define metastatic burden and inform radionuclide therapy planning.

A 75-year-old male with diffuse large B-cell lymphoma underwent PET/CT imaging on a Biograph mCT Flow™ scanner to assess residual disease. The patient was referred for COVID-19 testing due to suspicious hypermetabolic parenchymal foci in the lungs. This case reviews PET/CT in a differential diagnosis of COVID-19 within incidental findings.

A 75-year-old female with recurrent metastatic invasive lobular breast cancer underwent concurrent ¹⁸F FDG PET/CT and ¹⁸F FES PET/CT imaging to evaluate the extent of estrogen receptor (ER)-positive osseous lesions. This case highlights the use of ¹⁸F FES PET/CT in the evaluation of ER-positive breast cancer when ¹⁸F FDG PET/CT findings are inconclusive.

A 47-year-old female with a history of progressive exophthalmos and bilateral orbital masses in the retro-ocular space underwent ^99mTc MDP bone imaging with xSPECT Bone™ performed on a Symbia Intevo Bold™ SPECT/CT scanner. This case demonstrates the use of xSPECT Bone technology to help evaluate symmetrical bone metabolism when diagnosing Erdheim-Chester disease.

A 67-year-old female with chronic pain and limited movement in her right temporo-mandibular joint along with difficulty opening her jaw underwent a ^99mTc MDP bone study on a Symbia Intevo™ SPECT/CT scanner. This case demonstrates the use of xSPECT Quant™ to help evaluate the severity of mandibular osteomyelitis.

A seven-year-old female with café-au-lait skin spots, poly-fibrous dysplasia, and early on-set puberty underwent ^99mTc MDP bone imaging with xSPECT Bone™ performed on a Symbia Intevo™ SPECT/CT scanner. This case demonstrates the use of xSPECT Bone™ technology to help detect abnormal skeletal metabolism in the evaluation of McCune-Albright syndrome.

A 50-year-old female with progressive weakness in both legs underwent ¹⁸F FDG imaging performed on a Biograph Vision™ PET/CT scanner to evaluate a spinal pathology. This case illustrates how a comprehensive PET/CT evaluation helps delineate the extent of disease infiltration in primary central nervous system diffuse large B-cell lymphoma.

A 52-year-old woman with a history of right total-knee arthroplasty (TKA) presented with persistent right knee pain. An inconclusive radiograph led to a ^99mTc-MDP three-phase bone scan, which was followed by SPECT/CT imaging to evaluate knee pathology.