gross tumor volume

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Related to gross tumor volume: Clinical Target Volume

gross tumor volume

The demonstrable extent of a tumor seen or felt with standard examination techniques. The gross tumor volume is used in radiation oncology as the basis for initial estimates of the extent of a tumor that will undergo treatment with external beam radiation or brachytherapy.

See also: volume

References in periodicals archive ?

Presented in this work is the training and validation of a DTKNN classifier algorithm based on the use of 3D texture features derived from PET/CT scans of patients with lung carcinoma, in order to estimate the contours of the gross tumor volume. The DTKNN differentiates itself from other methods in that it utilizes machine learning to classify voxels as being either normal or abnormal by relying on the textural patterns from both PET and CT.

Automatic segmentation of lung carcinoma using 3D texture features in 18-FDG PET/CT

Correlation of Computed Tomography-Defined Gross Tumor Volume (GTV), Microscopy-Defined GTV, and Microscopy-Defined GTV Plus Inflammation * Micro-GTV + Specimen CT-GTV Micro-GTV Inflammation 1 2.63 2.47 4.63 2 6.07 3.14 5.72 3 8.81 4.33 6.01 4 21.21 17.53 20.64 5a 32.67 19.58 28.36 5b 33.23 20.88 29.53 5c 46.02 22.01 31.31 Difference Difference Between CT-GTV Between CT-GTV and Micro-GTV Specimen and Micro-GTV % Difference + Inflammation 1 0.16 6 -2 2 2.93 93 0.35 3 4.48 103 2.8 4 3.68 21 0.57 5a 13.09 67 4.31 5b 12.35 59 3.7 5c 24.01 109 14.71 Specimen % Difference 1 -76 2 6 3 32 4 3 5a 13 5b 11 5c 32 * CT-GTV indicates area of tumor as outlined on CT scan; Micro-GTV, area of tumor under microscope; Micro-GTV + inflammation, area of tumor plus surrounding inflammation under microscope.

Computed tomographic--pathologic correlation of gross tumor volume and clinical target volume in non--small cell lung cancer: a pilot experience

(d) Gold standard of gross tumor volume, drawn on the fused PET-CT image (red line).

Fully Automated Delineation of Gross Tumor Volume for Head and Neck Cancer on PET-CT Using Deep Learning: A Dual-Center Study

The internal target volume (ITV) was defined as the combination of the gross tumor volume (GTV) delineated on ten phases of the 4DCT scans under the pulmonary windows.

Comparative Analysis of Local Control Prediction Using Different Biophysical Models for Non-Small Cell Lung Cancer Patients Undergoing Stereotactic Body Radiotherapy

Gross tumor volume (GTV) and clinical target volume (CTV) were defined by ICRU Report 50.

Relationship between TLR4 and NF-B p65 protein expressions and clinical radiosensitivity of patients with esophageal squamous cell carcinoma

The gross tumor volume (GTV) for the boost was identified in the CT (supported by contrast media) utilizing the FDG-uptake.

Intensity-modulated and image-guided radiotherapy in patients with locally advanced inoperable pancreatic cancer after preradiation chemotherapy