1
|
Brooks AF, Winton WP, Stauff J, Arteaga J, Henderson B, Niedbala J, Scott PJ, Viglianti BL. Development of Fluorinated NP-59: A Revival of Cholesterol Use Imaging with PET. J Nucl Med 2022; 63:1949-1955. [PMID: 35483964 PMCID: PMC9730927 DOI: 10.2967/jnumed.122.263864] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2022] [Revised: 03/29/2022] [Indexed: 01/11/2023] Open
Abstract
Imaging of cholesterol use is possible with the 131I scintiscanning/SPECT agent NP-59. This agent provided a noninvasive measure of adrenal function and steroid synthesis. However, iodine isotopes resulted in poor resolution, manufacturing challenges, and high radiation dosimetry to patients that have limited their use and clinical impact. A 18F analog would address these shortcomings while retaining the ability to image cholesterol use. The goal of this study was to prepare and evaluate a 18F analog of NP-59 to serve as a PET imaging agent for functional imaging of the adrenal glands based on cholesterol use. Previous attempts to prepare such an analog of NP-59 have proven elusive. Preclinical and clinical evaluation could be performed once the new fluorine analog of NP-59 production was established. Methods: The recent development of a new reagent for fluorination along with an improved route to the NP-59 precursor allowed for the preparation of a fluorine analog of NP-59, FNP-59. The radiochemistry for the 18F-radiolabeled 18F-FNP-59 is described, and rodent radiation dosimetry studies and in vivo imaging in New Zealand rabbits was performed. After in vivo toxicity studies, an investigational new drug approval was obtained, and the first-in-humans images with dosimetry using the agent were acquired. Results: In vivo toxicity studies demonstrated that FNP-59 is safe for use at the intended dose. Biodistribution studies with 18F-FNP-59 demonstrated a pharmacokinetic profile similar to that of NP-59 but with decreased radiation exposure. In vivo animal images demonstrated expected uptake in tissues that use cholesterol: gallbladder, liver, and adrenal glands. In this first-in-humans study, subjects had no adverse events and images demonstrated accumulation in target tissues (liver and adrenal glands). Manipulation of uptake was also demonstrated with patients who received cosyntropin, resulting in improved uptake. Conclusion: 18F-FNP-59 provided higher resolution images, with lower radiation dose to the subjects. It has the potential to provide a noninvasive test for patients with adrenocortical diseases.
Collapse
Affiliation(s)
- Allen F. Brooks
- Division of Nuclear Medicine, Department of Radiology, The University of Michigan Medical School, Ann Arbor, Michigan; and
| | - Wade P. Winton
- Division of Nuclear Medicine, Department of Radiology, The University of Michigan Medical School, Ann Arbor, Michigan; and
| | - Jenelle Stauff
- Division of Nuclear Medicine, Department of Radiology, The University of Michigan Medical School, Ann Arbor, Michigan; and
| | - Janna Arteaga
- Division of Nuclear Medicine, Department of Radiology, The University of Michigan Medical School, Ann Arbor, Michigan; and
| | - Bradford Henderson
- Division of Nuclear Medicine, Department of Radiology, The University of Michigan Medical School, Ann Arbor, Michigan; and
| | - Jeremy Niedbala
- Division of Nuclear Medicine, Department of Radiology, The University of Michigan Medical School, Ann Arbor, Michigan; and
| | - Peter J.H. Scott
- Division of Nuclear Medicine, Department of Radiology, The University of Michigan Medical School, Ann Arbor, Michigan; and,The Interdepartmental Program in Medicinal Chemistry, The University of Michigan, Ann Arbor, Michigan
| | - Benjamin L. Viglianti
- Division of Nuclear Medicine, Department of Radiology, The University of Michigan Medical School, Ann Arbor, Michigan; and
| |
Collapse
|
2
|
Wong K, Chondrogiannis S, Fuster D, Ruiz C, Marzola M, Giammarile F, Colletti P, Rubello D. Additional value of hybrid SPECT/CT systems in neuroendocrine tumors, adrenal tumors, pheochromocytomas and paragangliomas. Rev Esp Med Nucl Imagen Mol 2017. [DOI: 10.1016/j.remnie.2016.09.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
|
3
|
Wong KK, Chondrogiannis S, Fuster D, Ruiz C, Marzola MC, Giammarile F, Colletti PM, Rubello D. Additional value of hybrid SPECT/CT systems in neuroendocrine tumors, adrenal tumors, pheochromocytomas and paragangliomas. Rev Esp Med Nucl Imagen Mol 2016; 36:103-109. [PMID: 27793631 DOI: 10.1016/j.remn.2016.09.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2016] [Revised: 09/15/2016] [Accepted: 09/15/2016] [Indexed: 10/20/2022]
Abstract
The aim of this review was to evaluate the potential advantages of SPECT/CT hybrid imaging in the management of neuroendocrine tumors, adrenal tumors, pheochromocytomas and paragangliomas. From the collected data, the superiority of fused images was observed as providing both functional/molecular and morphological imaging compared to planar imaging. This provided an improvement in diagnostic imaging, with significant advantages as regards: (1) precise locating of the lesions; (2) an improvement in characterization of the findings, resulting higher specificity, improved sensitivity, and overall greater accuracy, (3) additional anatomical information derived from the CT component; (4) CT-based attenuation correction and potential for volumetric dosimetry calculations, and (5) improvement on the impact on patient management (e.g. in better defining treatment plans, in shortening surgical operating times). It can be concluded that SPECT/CT hybrid imaging provides the nuclear medicine physician with a powerful imaging modality in comparison to planar imaging, providing essential information about the location of lesions, and high quality homogeneous images.
Collapse
Affiliation(s)
- K K Wong
- Division of Nuclear Medicine, Department of Radiology, University of Michigan, Ann Arbor, MI, USA; Nuclear Medicine Service, VA Ann Arbor Healthcare System, Ann Arbor, MI, USA
| | - S Chondrogiannis
- Department of Nuclear Medicine, Radiology, NeuroRadiology, Medical Physics, Clinical Laboratory, Molecular Laboratory, Microbiology, Pathology, Santa Maria della Misericordia Hospital, Rovigo, Italy
| | - D Fuster
- Department of Nuclear Medicine, Hospital Clínic, Barcelona, Spain
| | - C Ruiz
- Department of Nuclear Medicine, Hospital Clínic, Barcelona, Spain
| | - M C Marzola
- Department of Nuclear Medicine, Radiology, NeuroRadiology, Medical Physics, Clinical Laboratory, Molecular Laboratory, Microbiology, Pathology, Santa Maria della Misericordia Hospital, Rovigo, Italy
| | - F Giammarile
- Nuclear Medicine Department, University of Lyon, Lyon, France
| | - P M Colletti
- Department of Nuclear Medicine, University of Southern California, Los Angeles, CA, USA
| | - D Rubello
- Department of Nuclear Medicine, Radiology, NeuroRadiology, Medical Physics, Clinical Laboratory, Molecular Laboratory, Microbiology, Pathology, Santa Maria della Misericordia Hospital, Rovigo, Italy.
| |
Collapse
|
5
|
Wong KK, Gandhi A, Viglianti BL, Fig LM, Rubello D, Gross MD. Endocrine radionuclide scintigraphy with fusion single photon emission computed tomography/computed tomography. World J Radiol 2016; 8:635-655. [PMID: 27358692 PMCID: PMC4919764 DOI: 10.4329/wjr.v8.i6.635] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/28/2015] [Revised: 11/09/2015] [Accepted: 03/18/2016] [Indexed: 02/06/2023] Open
Abstract
AIM: To review the benefits of single photon emission computed tomography (SPECT)/computed tomography (CT) hybrid imaging for diagnosis of various endocrine disorders.
METHODS: We performed MEDLINE and PubMed searches using the terms: “SPECT/CT”; “functional anatomic mapping”; “transmission emission tomography”; “parathyroid adenoma”; “thyroid cancer”; “neuroendocrine tumor”; “adrenal”; “pheochromocytoma”; “paraganglioma”; in order to identify relevant articles published in English during the years 2003 to 2015. Reference lists from the articles were reviewed to identify additional pertinent articles. Retrieved manuscripts (case reports, reviews, meta-analyses and abstracts) concerning the application of SPECT/CT to endocrine imaging were analyzed to provide a descriptive synthesis of the utility of this technology.
RESULTS: The emergence of hybrid SPECT/CT camera technology now allows simultaneous acquisition of combined multi-modality imaging, with seamless fusion of three-dimensional volume datasets. The usefulness of combining functional information to depict the bio-distribution of radiotracers that map cellular processes of the endocrine system and tumors of endocrine origin, with anatomy derived from CT, has improved the diagnostic capability of scintigraphy for a range of disorders of endocrine gland function. The literature describes benefits of SPECT/CT for 99mTc-sestamibi parathyroid scintigraphy and 99mTc-pertechnetate thyroid scintigraphy, 123I- or 131I-radioiodine for staging of differentiated thyroid carcinoma, 111In- and 99mTc- labeled somatostatin receptor analogues for detection of neuroendocrine tumors, 131I-norcholesterol (NP-59) scans for assessment of adrenal cortical hyperfunction, and 123I- or 131I-metaiodobenzylguanidine imaging for evaluation of pheochromocytoma and paraganglioma.
CONCLUSION: SPECT/CT exploits the synergism between the functional information from radiopharmaceutical imaging and anatomy from CT, translating to improved diagnostic accuracy and meaningful impact on patient care.
Collapse
|