scholarly journals [18F] FDG PET/CT and Head and Neck MRI in the Diagnosis and Prognosis of Moroccan Patients With Nasopharyngeal Carcinoma

2021 ◽  
Author(s):  
Amina Gihbid ◽  
Ghofrane Cherkaoui Salhi ◽  
Imane El alami ◽  
Hasnaa Belgadir ◽  
Jaafar Ibnohoud ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Nasopharyngeal Carcinoma ◽  
Head And Neck ◽  
Fdg Pet ◽  
Standardized Uptake Value ◽  
Tnm Staging ◽  
Metabolic Parameters ◽  
Pet Ct ◽  
Fdg Pet Ct ◽  
Moroccan Patients

Abstract Purpose: While nasopharyngeal carcinoma (NPC) management in Morocco is still based on conventional work-ups: a head and neck computed tomography (HN-CT), thoracic and abdominal CT and bone scan, the combination of HN magnetic resonance imaging (HN-MRI) and 2-Deoxy-2-[18F] fluoro-D-glucose positron emission tomography/computed tomography ([18F] FDG PET/CT) is now widely used in the diagnostic and follow-up of this malignancy.Methods: In this prospective study, [18F] FDG PET/CT and HN-MRI outcomes of 117 NPC patients diagnosed between January 2017 and December 2018 were investigated in order to assess their usefulness in routine management of Moroccan patients with NPC. The concordance between HN-MRI and [18F] FDG PET/CT in Tumor (T) and Nodal (N) classification was assessed and the association between [18F] FDG PET/CT metabolic parameters (Tumor- maximum standardized uptake value (T-SUV max), Nodal (N-SUV max), node-to-tumor SUV ratio (NTR) and distant metastasis (M-SUV max), TNM staging system, NPC stages and patient’s survival outcomes was evaluated. Results: Our results showed a moderate concordance between T-TEP and T-MRI categories with a Cohen kappa coefficient (k) at 0.45, and a mediocre concordance between N-TEP and N-MRI (k=0.3). Metabolic parameters of the [18F] FDG PET/CT were assessed; N-SUV max values were significantly higher in patients with advanced nodal involvement, with a mean of 7.4, 9.7 and 11.0 for patients with N1, N2 and N3 nodal categories, respectively (p<0.05). overall, N-SUV max, NTR were independent prognostic markers for overall survival and progression free survival in Moroccan NPC patients (p<0.05).Conclusion: Our findings provide additional evidence into the complementary roles of HN-MRI and [18F] FDG PET/CT in TNM and overall staging of NPC. To the best of our knowledge, this is the first Moroccan study to highlight N-SUV max and NTR derived from [18F] FDG-PET/CT as promising metabolic biomarkers for NPC prognosis.

Prognostic Impact of Standardized Uptake Value of F-18 FDG PET/CT in Nasopharyngeal Carcinoma

2011 ◽  
Vol 36 (11) ◽  
pp. 1007-1011 ◽  
Author(s):  
Winnie K. S. Chan ◽  
Dora Lai-Wan Kwong ◽  
David W. C. Yeung ◽  
Bingsheng Huang ◽  
Pek-Lan Khong
Keyword(s):  
Nasopharyngeal Carcinoma ◽  
Fdg Pet ◽  
Standardized Uptake Value ◽  
Prognostic Impact ◽  
Pet Ct ◽  
Fdg Pet Ct

scholarly journals Prognostic Value of Metabolic Parameters Measured By 18F-FDG PET/CT In Patients With Metastatic Cutaneous Malignant Melanoma

2021 ◽  
Author(s):  
Ruihe Lai ◽  
Chong Jiang ◽  
Zhaoqun Chu ◽  
Zhengyang Zhou ◽  
Yue Teng ◽  
...  
Keyword(s):  
Malignant Melanoma ◽  
Fdg Pet ◽  
Standardized Uptake Value ◽  
Cutaneous Malignant Melanoma ◽  
Metabolic Parameters ◽  
Whole Body ◽  
Optimal Cutoff ◽  
Cutoff Values ◽  
Pet Ct ◽  
Fdg Pet Ct

Abstract Purpose: The purpose of this study was to investigate the prognostic relevance of metabolic parameters measured using 18F-FDG PET/CT in patients with metastatic cutaneous malignant melanoma (CMM).Materials and Methods: The prognostic impact of whole-body metabolic tumor volume (wMTV), whole-body tumor lesion glycolysis (wTLG), maximum standardized uptake value (SUVmax) and mean standardized uptake value (SUVmean) was evaluated in 42 metastatic CMM patients who underwent 18F-FDG PET/CT. The metabolic parameters were dichotomized by optimal cutoff values using time-dependent receiver operating characteristic (ROC) curves. In addition, univariate and multivariate analyses of the metabolic parameters were performed using the Kaplan-Meier method and Cox proportional hazards models.Results: The optimal cutoff values for disease-free survival (DFS) were 4.63 for SUVmax, 3.31 for SUVmean, 8.22 cm3 for wMTV, and 18.22 for wTLG. The optimal cutoff values for melanoma-specific survival (MSS) were 4.77 for SUVmax, 3.31 for SUVmean, 22.32 cm3 for wMTV, and 51.37 for wTLG. Thirty-two (72%) of the 42 patients experienced recurrence during the follow-up period, and 21 patients (50%) died from the disease. In univariate analysis, SUVmax greater than 4.63 (p= 0.025) and SUVmean greater than 3.31 (p= 0.011) affected DFS, while SUVmax greater than 4.77 (p= 0.039), wMTV greater than 22.32 (p= 0.023) and wMTV greater than 51.37 (p= 0.016) affected MSS. In multivariate analysis after adjustment for the effects of clinical parameters, SUVmax was the best predictive factor for DFS (p = 0.016), and SUVmax, wMTV and wTLG were the best predictive factors for MSS (p = 0.023, p = 0.018, and p = 0.007).Conclusions: SUVmax appears to be a strong independent prognostic factor for recurrence in metastatic CMM, and SUVmax, wMTV and wTLG were found to be the best predictive markers for melanoma-specific death.

scholarly journals Prognostic value of metabolic parameters on 18F-fluorodeoxyglucose positron tomography/computed tomography in classical rectal adenocarcinoma

2021 ◽  
Author(s):  
Byung Wook Choi ◽  
Sungmin Kang ◽  
Sung Uk Bae ◽  
Woon Kyung Jeong ◽  
Seong Kyu Baek ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Prognostic Factors ◽  
Fdg Pet ◽  
Prognostic Value ◽  
Univariate Analysis ◽  
Rectal Adenocarcinoma ◽  
Metabolic Parameters ◽  
Factors Affecting ◽  
Pet Ct ◽  
Fdg Pet Ct

Abstract We aimed to investigate the prognostic value of the metabolic parameters of 18F-fluorodeoxyglucose positron emission tomography/computed tomography (FDG PET/CT) in classical rectal adenocarcinoma (CRAC). We retrospectively reviewed 149 patients with CRAC who underwent preoperative 18F-FDG PET/CT at initial diagnosis followed by curative surgical resection. 18F-FDG PET/CT metabolic parameters including maximum standardized uptake value (SUVmax), metabolic tumour volume (MTV), and total lesion glycolysis (TLG) for disease-free survival (DFS) and overall survival (OS) were evaluated for prognostic significance by univariate and multivariate analyses, along with conventional risk factors including pathologic T (pT) stage, lymph node (LN) metastasis, lymphovascular invasion (LVI), perineural invasion (PNI), and preoperative carcinoembryonic antigen (CEA) level. On univariate analysis, high pT stage, positive LN metastasis, LVI, PNI, MTV, and TLG were significant prognostic factors affecting DFS (all P < 0.05), while CEA level, high pT stage, positive LN metastasis, LVI, PNI, MTV, and TLG affected OS (all P < 0.05). On multivariate analysis, positive LN metastasis, LVI, MTV, and TLG were independent prognostic factors affecting DFS (all P < 0.05), while CEA level, positive LN metastasis, and MTV affected OS (all P < 0.05). Thus, MTV and TLG are independent prognostic factors for DFS and OS in CRAC patients.

scholarly journals Response evaluation of cervical lymph nodes after chemoradiation in patients with head and neck cancer - does additional [18F]FDG-PET-CT help?

2020 ◽  
Vol 20 (1) ◽  
Author(s):  
Daniel Dejaco ◽  
Christian Uprimny ◽  
Gerlig Widmann ◽  
David Riedl ◽  
Patrizia Moser ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Head And Neck ◽  
Predictive Value ◽  
Fdg Pet ◽  
Tumor Board ◽  
Response Evaluation ◽  
Pet Ct ◽  
18F Fdg ◽  
Contrast Ct ◽  
Fdg Pet Ct

Abstract Background Contrast-enhanced high-resolution computed tomography (contrast-CT) is a standard imaging modality following primary concurrent radiochemotherapy (RCT) for response evaluation in patients with head and neck squamous cell carcinoma (HNSCC). We investigated the additional benefit of Fluorine-18-fluorodeoxyglucose ([18F]FDG) - positron emission tomography with computed tomography (PET-CT), if complete response (CR) in the neck based on contrast-CT was considered unsafe by the interdisciplinary tumor board (ITB). Methods In a retrospective observational study, patients recorded in the institutional tumor registry with incident advanced HNSCC following first line treatment with RCT were eligible. If contrast-CT results of the neck were equivocal or positive at response evaluation, a neck dissection (ND) was scheduled. While waiting for the ND, a [18F]FDG-PET-CT was performed in addition. The histopathological outcome of ND served as reference criterion. Accuracy parameters including sensitivity, specificity, accuracy, positive predictive value (PPV) and negative predictive value (NPV) for both, contrast-CT and PET-CT, served as main outcome parameters. Results A total of 41 HNSCC patients with positive or equivocal posttreatment contrast-CT were eligible for post-RCT-ND. Of these, 33 received an additional [18F]FDG-PET-CT prior to surgery. Median interval between completion of RCT and the ([18F]FDG)-PET-CT was 10 weeks. Vital persistent tumor in the neck was histopathologically found in 13 of 33 patients with positive or equivocal posttreatment contrast-CT. For contrast-CT and [18F]FDG-PET-CT, sensitivity was 92.3 and 69.2% and did not differ statistically significantly (p = 0.250) whereas specificity was significantly higher for [18F]FDG-PET-CT compared with contrast-CT (80% vs. 25%, p = 0.001). For contrast-CT and [18F]FDG-PET-CT accuracy, PPV and NPV was 31.7, 12.0,96.7 and 78.9, 27.8,95.0%, respectively. Conclusion A negative [18F]FDG-PET-CT did not improve the exclusion of persistent vital tumor in the neck after primary RCT in comparison with contrast-CT alone. However, a positive [18F]FDG-PET-CT was a considerably better indicator of persistent, vital tumor in the neck than contrast-CT. If, based on the [18F]FDG-PET-CT result, the ND in patients with an uncertain or positive neck response in contrast CT had been omitted, the treatment of persistent nodal disease would have been delayed in 3 of 13 patients. On the other hand, if ND would have only been performed in [18F]FDG-PET-CT positive patients, an unnecessary ND would have been avoided in 11 of 20 patients.

scholarly journals Impact and prognostic value of 18F-fluorodeoxyglucose positron emission tomography-computed tomography scan in the evaluation of residual head and neck cancer: Single-center experience from Pakistan

2017 ◽  
Vol 06 (02) ◽  
pp. 081-083
Author(s):  
Saima Riaz ◽  
Humayun Bashir ◽  
Hassan Iqbal ◽  
Arif Jamshed ◽  
Ahmad Murtaza ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Positron Emission Tomography ◽  
Head And Neck ◽  
Predictive Value ◽  
Fdg Pet ◽  
Emission Tomography ◽  
Ct Scans ◽  
Positron Emission ◽  
Pet Ct ◽  
Fdg Pet Ct

Abstract Background: Overview of clinical impact of positron emission tomography-computed tomography (PET-CT) scans in patients with head and neck carcinomas at our center. Methods: Retrospective review of posttreatment 18F-fluorodeoxyglucose (18F-FDG) PET-CT scans in patients with head and neck carcinomas with risk of residual disease. Clinical outcome served as the reference standard. Results: This study included 93 patients (65.6% males, mean age: 48.8 years ± 17.2 standard deviation) with squamous cell carcinoma as most frequent histopathology (91.4%). PET-CT scans were performed on average 6 months posttreatment. Diagnostic accuracy, positive predictive value, and negative predictive value of PET-CT for disease were found to be 88%, 88%, and 92%, respectively. A median follow-up of 24 months was available for 91 patients. Kaplan–Meier curves showed significantly higher disease-free survival with negative PET-CT as compared to positive PET-CT (P = 0.01) and maximum standardized uptake values of <5.0 (P = 0.01). Conclusion: FDG PET-CT has diagnostic and prognostic implications in treated patient of head and neck cancers.

scholarly journals Comparison of different images in gross target volume delineating on VX2 nasopharyngeal transplantation tumor models.

2019 ◽  
Vol 5 (suppl) ◽  
pp. 127-127
Author(s):  
QingLian Wen ◽  
ZhangQiang Xiang
Keyword(s):  
Nasopharyngeal Carcinoma ◽  
Fdg Pet ◽  
Rabbit Model ◽  
Standardized Uptake Value ◽  
Target Volume ◽  
Ct Images ◽  
Pathological Examination ◽  
Flt Pet ◽  
Pet Ct ◽  
Fdg Pet Ct

127 Background: To determine the optimum conditions for diagnosis of nasopharyngeal carcinoma, we established VX2 rabbit model to delineate gross target volume (GTV) in different imaging methods. Methods:The orthotopic nasopharyngeal carcinoma (NPC) was established in sixteen New Zealand rabbits. After 7-days inoculation, the rabbits were examined by CT scanning and then sacrificed for pathological examination. To achieve the best delineation, different GTVs of CT, MRI, 18F-FDG PET/CT, and 18F-FLT PET/CT images were correlated with pathological GTV (GTVp). Results: We found 45% and 60% of the maximum standardized uptake value (SUVmax) as the optimal SUV threshold for the target volume of NPC in 18F-FDG PET/CT and 18F-FLT PET/CT images, respectively (GTVFDG45% and GTVFLT60%). Moreover, the GTVMRI and GTVCT were significantly higher than the GTVp ( P ≤ 0.05), while the GTVFDG45% and especially GTVFLT60% were similar to the GTVp ( R = 0.892 and R = 0.902, respectively; P ≤ 0.001). Conclusions: Notably, the results suggested that 18F-FLT PET/CT could reflect the tumor boundaries more accurately than 18F-FDG PET/CT, MRI and CT, which makes 18F-FLT PET-CT more advantageous for the clinical delineation of the target volume in NPC. Keywords: Nasopharyngeal carcinoma; Gross tumor volume; Magnetic resonance imaging, Computed tomography; 18F-FLT PET/CT; 18F-FDG PET/CT

scholarly journals The Role of the Metabolic Parameters of 18F-FDG PET/CT in Patients With Locally Advanced Cervical Cancer

2021 ◽  
Vol 11 ◽  
Author(s):  
Dunhuang Wang ◽  
Xiaoliang Liu ◽  
Weiping Wang ◽  
Li Huo ◽  
Qingqing Pan ◽  
...  
Keyword(s):  
Cervical Cancer ◽  
Fdg Pet ◽  
Locally Advanced ◽  
Standardized Uptake Value ◽  
Metabolic Parameters ◽  
Free Survival ◽  
Pet Ct ◽  
Pre Treatment ◽  
Fdg Pet Ct

PurposeTo evaluate the role of the pre-treatment cervical and lymph node (LN) metabolic parameters of 18F-fluorodeoxyglucose positron emission tomography-computed tomography (18F-FDG PET/CT) for locally advanced cervical cancer (LACC) patients receiving concurrent chemoradiotherapy or radiotherapy.Methodswe reviewed 125 consecutive patients with LACC who underwent pre-treatment 18F-FDG PET/CT examination and concurrent chemoradiotherapy or radiotherapy from February 2010 to December 2015 at our institute. The mean standardized uptake value (SUVmean), maximum standardized uptake value (SUVmax), metabolic tumor volume (MTV), and total lesion glycolysis (TLG) of cervical lesion and lymph node (LN) were recorded. Receiver operator characteristic curve, C-index, Kaplan-Meier method, and Cox proportional hazards models were performed.ResultsThe median follow-up was 62 months (range, 4-114 months). For 125 included patients with cervical cancer, the 5-year overall survival (OS), disease-free survival (DFS), local control (LC) and distant metastasis-free survival (DMFS) rates were 83.6%, 75.1%, 92.3% and 79.9%, respectively. Cervical MTV (c-index 0.59-0.61) and cervical TLG (c-index 0.60-0.62) values calculated with a threshold of 40% SUVmax presented stronger prediction capability than cervical SUVmean (c-index 0.51-0.58) and cervical SUVmax (c-index 0.53-0.57) for OS, DFS, LC, and DMFS. In univariate analysis, cervical TLG ≥ 113.4 had worse DFS and DMFS. Cervical MTV ≥ 18.3 cm3 had worse OS and DMFS. In multivariate analysis, cervical TLG ≥ 113.4 implied worse OS, DFS, and DMFS. In either univariate or multivariate analyses, cervical SUVmean and cervical SUVmax had no statistically significant correlation with OS, DFS, LC and DMFS. For 55 cervical cancer patients with positive LN, LN SUVmax presented strongest prediction capability for OS (c-index = 0.79), DFS (c-index = 0.72), LC (c-index = 0.62), and DMFS (c-index = 0.79). In multivariate analysis, LN SUVmax remained significant biomarker linked to OS, DFS, and DMFS.ConclusionPre-treatment cervical and LN metabolic parameters were associated with survival outcomes in patients with LACC. In our study, we found that pre-treatment cervical TLG and LN SUVmax may be important prognostic biomarkers for OS, DFS, and DMFS. However, further prospective studies with a large number of patients are required to evaluate the value of the metabolic parameters in survival outcomes prediction.

scholarly journals Prognostic value of metabolic parameters on 18F-fluorodeoxyglucose positron tomography/computed tomography in classical rectal adenocarcinoma

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Byung Wook Choi ◽  
Sungmin Kang ◽  
Sung Uk Bae ◽  
Woon Kyung Jeong ◽  
Seong Kyu Baek ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Prognostic Factors ◽  
Fdg Pet ◽  
Prognostic Value ◽  
Univariate Analysis ◽  
Rectal Adenocarcinoma ◽  
Metabolic Parameters ◽  
Factors Affecting ◽  
Pet Ct ◽  
Fdg Pet Ct

AbstractWe aimed to investigate the prognostic value of the metabolic parameters of 18F-fluorodeoxyglucose positron emission tomography/computed tomography (FDG PET/CT) in classical rectal adenocarcinoma (CRAC). We retrospectively reviewed 149 patients with CRAC who underwent preoperative 18F-FDG PET/CT at initial diagnosis followed by curative surgical resection. 18F-FDG PET/CT metabolic parameters including maximum standardized uptake value (SUVmax), metabolic tumour volume (MTV), and total lesion glycolysis (TLG) for disease-free survival (DFS) and overall survival (OS) were evaluated for prognostic significance by univariate and multivariate analyses, along with conventional risk factors including pathologic T (pT) stage, lymph node (LN) metastasis, lymphovascular invasion (LVI), perineural invasion (PNI), and preoperative carcinoembryonic antigen (CEA) level. On univariate analysis, high pT stage, positive LN metastasis, LVI, PNI, MTV, and TLG were significant prognostic factors affecting DFS (all P < 0.05), while CEA level, high pT stage, positive LN metastasis, LVI, PNI, MTV, and TLG affected OS (all P < 0.05). On multivariate analysis, positive LN metastasis, LVI, MTV, and TLG were independent prognostic factors affecting DFS (all P < 0.05), while CEA level, positive LN metastasis, and MTV affected OS (all P < 0.05). Thus, the volume-based metabolic parameters from preoperative 18F-FDG PET/CT scans are independent prognostic factors in patients with CRAC.

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