Usefulness of whole body FDG18 PET-CT imaging in comprehensive oncologic management - initial experience

Kumar, Ashish; Mayank, Manas; Kandedia, Mayur V; Mistry, Yogesh M

doi:10.4103/0973-1482.73362

Cited by 2 publications

(1 citation statement)

References 16 publications

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“…In contrast, Nishioka, et al . showed that GTV volumes were not changed by image fusion between 18F-FDG-PET and MRI/CT in majority of cases[23] and Ashish, et al ., found GTV-PET was significantly higher than GTV-CT.[25] Variations in image acquisition procedures, registration methods, and target volume delineation methods are potential factors for this variation.…”

Section: Discussionmentioning

confidence: 99%

A quantitative comparison of gross tumour volumes delineated on [18F]-FDG PET-CT scan and CECT scan in head and neck cancers

et al. 2012

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Purpose:To compare quantitatively Gross tumor volume (GTV), both primary and nodal areas of head and neck cancers, delineated on [18F]-2fluoro, 2deoxy d-glucose-positron emission tomography/computed tomography ([18F]-FDG-PET-CT) scan to those delineated on Contrast-enhanced CT scan (CECT scan).Methods:A total of 26 consecutive patients with squamous cell cancers of head and neck were included in this study. The primary sites were oropharynx (n = 7), hypopharynx (n = 6), paranasal sinus (n = 6), nasopharynx (n = 4), oral cavity (n = 2), and one with unknown primary and secondary neck node. All patients underwent routine staging work-up. FDG-PET and CECT scans were performed with dedicated PET-CT scanner in single session as a part of the radiotherapy treatment planning for Intensity modulated radiotherapy/Image-guided radiotherapy.Results:All patients had abnormal increased uptake in PET-CT scans. PET-CT resulted in changes of CT-based staging in 8 of 26 patients (up-staged in 7 and down-staged in 1). The mean primary and nodal GTV volumes on PET-CT and CT were significantly different (primary: PET-GTV: 48.43 ± 53.21 cc vs. CT 54.78 ± 64.47 cc, P < 0.001; nodes: PET-GTV: 12.72 ± 15.46 cc vs. 11.04 ± 14.87 cc, P < 0.001). The mismatch between two target volumes was statistically significant (P = 0.03 for GTV primary, P = 0.04 for GTV node).Conclusion:Accuracy of delineation of GTV can be improved along with functional imaging using [18F]-FDG. These metabolically active volumes are significantly smaller than CT-based volumes and could be missed during conventional CT-based target delineations of GTVs.

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Section: Discussionmentioning

confidence: 99%

A quantitative comparison of gross tumour volumes delineated on [18F]-FDG PET-CT scan and CECT scan in head and neck cancers

et al. 2012

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123I-MIBG scintigraphy and 18F-FDG-PET imaging for diagnosing neuroblastoma

Bleeker¹,

Tytgat

Adam

et al. 2015

Cochrane Database of Systematic Reviews

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Background Neuroblastoma is an embryonic tumour of childhood that originates in the neural crest. It is the second most common extracranial malignant solid tumour of childhood. Neuroblastoma cells have the unique capacity to accumulate Iodine‐123‐metaiodobenzylguanidine (¹²³I‐MIBG), which can be used for imaging the tumour. Moreover, ¹²³I‐MIBG scintigraphy is not only important for the diagnosis of neuroblastoma, but also for staging and localization of skeletal lesions. If these are present, MIBG follow‐up scans are used to assess the patient's response to therapy. However, the sensitivity and specificity of ¹²³I‐MIBG scintigraphy to detect neuroblastoma varies according to the literature. Prognosis, treatment and response to therapy of patients with neuroblastoma are currently based on extension scoring of ¹²³I‐MIBG scans. Due to its clinical use and importance, it is necessary to determine the exact diagnostic accuracy of ¹²³I‐MIBG scintigraphy. In case the tumour is not MIBG avid, fluorine‐18‐fluorodeoxy‐glucose ( 18 F‐FDG) positron emission tomography (PET) is often used and the diagnostic accuracy of this test should also be assessed. Objectives Primary objectives: 1.1 To determine the diagnostic accuracy of ¹²³I‐MIBG (single photon emission computed tomography (SPECT), with or without computed tomography (CT)) scintigraphy for detecting a neuroblastoma and its metastases at first diagnosis or at recurrence in children from 0 to 18 years old. 1.2 To determine the diagnostic accuracy of negative ¹²³I‐MIBG scintigraphy in combination with 18 F‐FDG‐PET(‐CT) imaging for detecting a neuroblastoma and its metastases at first diagnosis or at recurrence in children from 0 to 18 years old, i.e. an add‐on test. Secondary objectives: 2.1 To determine the diagnostic accuracy of 18 F‐FDG‐PET(‐CT) imaging for detecting a neuroblastoma and its metastases at first diagnosis or at recurrence in children from 0 to 18 years old. 2.2 To compare the diagnostic accuracy of ¹²³I‐MIBG (SPECT‐CT) and 18 F‐FDG‐PET(‐CT) imaging for detecting a neuroblastoma and its metastases at first diagnosis or at recurrence in children from 0 to 18 years old. This was performed within and between included studies. ¹²³I‐MIBG (SPECT‐CT) scintigraphy was the comparator test in this case. Search methods We searched the databases of MEDLINE/PubMed (1945 to 11 September 2012) and EMBASE/Ovid (1980 to 11 September 2012) for potentially relevant articles. Also we checked the reference lists of relevant articles and review articles, scanned conference proceedings and searched for unpublished studies by contacting researchers involved in this area. Selection criteria We included studies of a cross‐sectional design or cases series of prove...

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Usefulness of whole body FDG18 PET-CT imaging in comprehensive oncologic management - initial experience

Abstract: With the initial use of FDG18 PET-CT imaging, we realized that rate of distant metastasis is much higher which usually remain unnoticed because of conventional approach of investigation. PET-CT imaging has potential to improve the method of conventional IMRT planning.

Cited by 2 publications

References 16 publications

A quantitative comparison of gross tumour volumes delineated on [18F]-FDG PET-CT scan and CECT scan in head and neck cancers

A quantitative comparison of gross tumour volumes delineated on [18F]-FDG PET-CT scan and CECT scan in head and neck cancers

123I-MIBG scintigraphy and 18F-FDG-PET imaging for diagnosing neuroblastoma

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